Highpower International (HPJ) 10-Q 14 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Nov. 12, 2014
Document and Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Entity Registrant Name	'Highpower International, Inc.	'
Entity Central Index Key	'0001368308	'
Current Fiscal Year End Date	'--12-31	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Entity Filer Category	'Smaller Reporting Company	'
Entity Common Stock, Shares Outstanding	'	15,052,158

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2014	Dec. 31, 2013
Current Assets:	'	'
Cash and cash equivalents	$11,802,804	$7,973,459
Restricted cash	15,467,638	28,586,121
Accounts receivable, net	38,107,418	33,961,014
Notes receivable	2,460,187	1,014,891
Prepayments	4,482,975	4,969,743
Other receivables	715,550	1,063,656
Inventories	20,567,199	19,739,360
Total Current Assets	93,603,771	97,308,244
Property, plant and equipment, net	49,383,533	48,548,203
Land use right, net	4,312,435	4,421,415
Intangible asset, net	612,500	650,000
Deferred tax assets	1,626,446	802,225
Foreign currency derivatives assets	'	63,289
TOTAL ASSETS	149,538,685	151,793,376
Current Liabilities:	'	'
Foreign currency derivatives liabilities	4,976	'
Accounts payable	50,067,002	40,026,698
Deferred income	1,635,959	675,521
Short-term loan	15,817,971	36,142,105
Notes payable	27,002,824	25,271,256
Other payables and accrued liabilities	6,819,899	7,801,431
Income taxes payable	2,046,929	1,279,658
Current portion of long-term loan	1,951,442	1,967,536
Total Current Liabilities	105,347,002	113,164,205
Warrant Liability	2,385,739	'
Long-term loan	2,439,302	3,935,071
TOTAL LIABILITIES	110,172,043	117,099,276
COMMITMENTS AND CONTINGENCIES	'	'
Stockholder's equity	'	'
Preferred stock (Par value: $0.0001, Authorized: 10,000,000 shares, Issued and outstanding: none)	'	'
Common stock (Par value: $0.0001, Authorized: 100,000,000 shares, 15,052,158 shares issued and outstanding at September 30, 2014 and 13,978,106 shares issued and outstanding at December 31, 2013)	1,505	1,398
Additional paid-in capital	10,403,566	6,011,305
Statutory and other reserves	3,142,411	3,142,411
Retained earnings	19,142,391	18,390,875
Accumulated other comprehensive income	5,517,730	5,848,859
Total Equity for the Company's Stockholders	38,207,603	33,394,848
Non-controlling interest	1,159,039	1,299,252
TOTAL EQUITY	39,366,642	34,694,100
TOTAL LIABILITIES AND EQUITY	$149,538,685	$151,793,376

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
CONSOLIDATED BALANCE SHEETS [Abstract]	'	'
Preferred Stock, par value per share	$0.00	$0.00
Preferred Stock, shares authorized	10,000,000	10,000,000
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common Stock, par value per share	$0.00	$0.00
Common Stock, shares authorized	100,000,000	100,000,000
Common Stock, shares issued	15,052,158	13,978,106
Common Stock, shares outstanding	15,052,158	13,978,106

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME [Abstract]	'	'	'	'
Net sales	$44,474,560	$38,852,978	$111,769,510	$94,429,966
Cost of sales	-35,069,440	-31,609,991	-88,703,954	-76,689,340
Gross profit	9,405,120	7,242,987	23,065,556	17,740,626
Research and development expenses	-2,056,045	-1,531,477	-5,844,962	-3,984,942
Selling and distribution expenses	-1,697,674	-1,598,397	-4,822,560	-4,386,375
General and administrative expenses, including stock-based compensation	-3,295,262	-2,957,467	-10,178,838	-8,375,713
Foreign currency transaction gain (loss)	-15,369	-154,453	334,326	-374,410
Gain (loss) on derivative instruments	59,785	45,033	-56,349	267,316
Total operation expenses	-7,004,565	-6,196,761	-20,568,383	-16,854,124
Income from operations	2,400,555	1,046,226	2,497,173	886,502
Loss on change of fair value of warrant liability	-1,286,335	'	-1,211,787	'
Other income	590,117	479,288	1,493,491	976,673
Interest expenses	-458,534	-444,706	-1,528,077	-1,146,118
Income before taxes	1,245,803	1,080,808	1,250,800	717,057
Income taxes expenses	-439,659	-372,023	-628,872	-579,352
Net income	806,144	708,785	621,928	137,705
Less: net loss attributable to non-controlling interest	-68,023	-33,443	-129,588	-104,932
Net income attributable to the Company	874,167	742,228	751,516	242,637
Comprehensive income	'	'	'	'
Net income	806,144	708,785	621,928	137,705
Foreign currency translation gain (loss)	19,368	232,201	-341,754	531,143
Comprehensive income	825,512	940,986	280,174	668,848
Less: comprehensive loss attributable to non-controlling interest	-67,486	-25,145	-140,213	-90,620
Comprehensive income attributable to the Company	$892,998	$966,131	$420,387	$759,468
Earnings per share of common stock attributable to the Company	'	'	'	'
- Basic	$0.06	$0.05	$0.05	$0.02
- Diluted	$0.06	$0.05	$0.05	$0.02
Weighted average number of common shares outstanding	'	'	'	'
- Basic	15,052,158	13,657,930	14,632,491	13,607,474
- Diluted	15,590,142	13,657,930	15,045,776	13,607,474

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities	'	'
Net income	$621,928	$137,705
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	3,161,384	1,832,596
Allowance for doubtful accounts	103	-3,643
Loss on disposal of property, plant and equipment	346,866	108,652
Loss on derivative instruments	67,748	117,966
Deferred income tax	-830,413	-76,813
Share-based payment	1,064,969	159,352
Loss on change of fair value of warrant liability	1,211,787	'
Changes in operating assets and liabilities:	'	'
Accounts receivable	-4,404,612	-7,918,758
Notes receivable	-1,453,621	-1,048,133
Prepayments	448,249	-2,191,905
Other receivable	339,411	-9,515
Inventories	-989,237	-188,974
Accounts payable	10,701,057	7,255,970
Deferred income	1,635,985	'
Other payables and accrued liabilities	-920,591	2,251,556
Income taxes payable	777,753	37,821
Net cash flows provided by operating activities	11,778,766	463,877
Cash flows from investing activities	'	'
Acquisition of plant and equipment	-5,864,112	-11,905,424
Net cash flows used in investing activities	-5,864,112	-11,905,424
Cash flows from financing activities	'	'
Proceeds from short-term bank loans	15,821,648	30,408,328
Repayment of short-term bank loans	-35,934,559	-15,748,524
Repayment of long-term bank loans	-1,463,605	-1,449,322
Proceeds from notes payable	34,246,949	32,308,322
Repayment of notes payable	-32,308,636	-32,097,470
Proceeds from issuance of capital stock, net	4,633,164	'
Change in restricted cash	12,900,973	-2,540,084
Net cash flows provided by (used in) financing activities	-2,104,066	10,881,250
Effect of foreign currency translation on cash and cash equivalents	18,757	367,544
Net increase (decrease) in cash and cash equivalents	3,829,345	-192,753
Cash and cash equivalents - beginning of period	7,973,459	6,627,334
Cash and cash equivalents - end of period	11,802,804	6,434,581
Cash paid for:	'	'
Income taxes	681,533	618,344
Interest expenses	1,489,796	1,146,118
Non-cash transactions	'	'
Accounts payable for construction in progress	648,385	1,408,336
Offset of deferred income and property, plant and equipment	$669,995	'

Organization_and_basis_of_pres

Organization and basis of presentation	9 Months Ended
	Sep. 30, 2014
Organization and basis of presentation [Abstract]	'
Organization and basis of presentation	'
	1	Organization and basis of presentation
	The consolidated financial statements include the financial statements of Highpower International, Inc. (“Highpower”) and its subsidiaries, Hong Kong Highpower Technology Company Limited (“HKHTC”), Shenzhen Highpower Technology Company Limited (“SZ Highpower”), Highpower Energy Technology (Huizhou) Company Limited (“HZ Highpower”), Springpower Technology (Shenzhen) Company Limited (“SZ Springpower”), Ganzhou Highpower Technology Company Limited (“GZ Highpower”), Icon Energy System Company Limited (“ICON”) and Huizhou Highpower Technology Company Limited ("HZ HTC"). Highpower and its subsidiaries are collectively referred to as the “Company”.
	Highpower was incorporated in the State of Delaware on January 3, 2006. HKHTC was incorporated in Hong Kong on July 4, 2003. All other subsidiaries are incorporated in the People's Republic of China (“PRC”).
	On May 15, 2013, GZ Highpower increased its paid-in capital from RMB15,000,000 ($2,381,293) to RMB30,000,000 ($4,807,847). SZ Highpower holds 60% of the equity interest of GZ Highpower, and four founding management members of GZ Highpower hold the remaining 40%.
	In April 2014, the Company and certain institutional investors entered into a securities purchase agreement, pursuant to which the Company sold 1,000,000 shares of common stock and warrants exercisable for 500,000 shares of common stock in a registered direct offering at a price of $5.05 per fixed combination for aggregate proceeds of $5.05 million. The shares and warrants were sold in multiples of a fixed combination consisting of (i) one share of common stock and (ii) one immediately exercisable warrant to purchase 0.50 shares of common stock. The net proceeds from the offering was $4,633,164, after deducting fees due the placement agent and offering expenses.
	The subsidiaries of the Company and their principal activities are described as follows:
	Name of company		Place and date	Attributable equity			Principal
			incorporation	interest held			activities
	Hong Kong Highpower Technology Co., Ltd		Hong Kong		100	%	Investment holding
	("HKHTC")		4-Jul-03
	Shenzhen Highpower Technology Co., Ltd		PRC		100	%	Manufacturing & marketing of batteries
	("SZ Highpower")		8-Oct-02
	Highpower Energy Technology (Huizhou) Co., Ltd		PRC		100	%	Inactive
	("HZ Highpower")		29-Jan-08
	Springpower Technology (Shenzhen) Co., Ltd		PRC		100	%	Research & manufacturing of batteries
	("SZ Springpower")		4-Jun-08
	Ganzhou Highpower Technology Co., Ltd		PRC		60	%	Processing, marketing and research of battery materials
	("GZ Highpower")		21-Sep-10
	Icon Energy System Co., Ltd.		PRC		100	%	Research and production of advanced battery packs and systems
	("ICON")		23-Feb-11
	Huizhou Highpower Technology Co., Ltd		PRC		100	%	Manufacturing & marketing of batteries
	("HZ HTC")		8-Mar-12

Summary_of_significant_account

Summary of significant accounting policies	9 Months Ended
	Sep. 30, 2014
Summary of significant accounting policies [Abstract]	'
Summary of significant accounting policies	'
		2	Summary of significant accounting policies
	Basis of presentation
	The accompanying consolidated balance sheet as of December 31, 2013, which has been derived from audited financial statements, and the unaudited interim consolidated financial statements as of September 30, 2014 and for the three and nine month periods ended September 30, 2014 and 2013 have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and disclosures, which are normally included in financial statements prepared in accordance with United States generally accepted accounting principles (U.S. GAAP), have been condensed or omitted pursuant to such rules and regulations, although we believe that the disclosures made are adequate to provide for fair presentation. The interim financial information should be read in conjunction with the Financial Statements and the notes thereto included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2013, previously filed with the SEC.
	In the opinion of management, all adjustments (which include normal recurring adjustments) necessary to present a fair statement of the Company's consolidated financial position as of September 30, 2014, its consolidated results of operations and cash flows for the nine month periods ended September 30, 2014 and 2013, as applicable, have been made. The interim results of operations are not necessarily indicative of the operating results for the full fiscal year or any future periods.
	Consolidation
	The consolidated financial statements include the accounts of the Company and its subsidiaries. All significant inter-company accounts and transactions have been eliminated in consolidation. Non-controlling interests represent the equity interest in the GZ Highpower that is not attributable to the Company.
	Use of estimates
	The preparation of financial statements in conformity with U.S. GAAP requires the Company to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant items subject to such estimates and assumptions include revenues; the allowance for doubtful receivables; recoverability of the carrying amount of inventory; fair values of financial instruments; and the assessment of deferred tax assets or liabilities. These estimates are often based on complex judgments and assumptions that management believes to be reasonable but are inherently uncertain and unpredictable. Actual results could differ from these estimates.
	Concentrations of credit risk
	Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of accounts receivable. The Company extends credit based on an evaluation of the customer's financial condition, generally without requiring collateral or other security. In order to minimize the credit risk, the management of the Company has delegated a team responsible for determining credit limits, credit approvals and other monitoring procedures to ensure that follow-up action is taken to recover overdue debts. Further, the Company reviews the recoverable amount of each individual trade debt at each balance sheet date to ensure that adequate impairment losses are made for irrecoverable amounts. In this regard, the management of the Company considers that the Company's credit risk is significantly reduced.
	No customer accounted for 10% or more of total sales during nine months ended September 30, 2014. During the nine months ended September 30, 2013, there was one customer, Energizer Holdings, Inc., that accounted for 11.3% of total net sales.
	No supplier accounted for 10% or more of total purchase amount during nine months ended September 30, 2014, and one major supplier accounted for 15.0% of total purchase amount during nine months ended September 30, 2013.
	None of the Company's customers accounted for 10% or more of the accounts receivable as of September 30, 2014 and December 31, 2013.
	Cash and cash equivalents
	Cash and cash equivalents include all cash, deposits in banks and other liquid investments with initial maturities of three months or less.
	Restricted cash
	Restricted cash include time deposits and cash security for bank acceptance bills.
	Accounts receivable
	Accounts receivable are stated at the original amount less an allowance for doubtful receivables, if any, based on a review of all outstanding amounts at period end. An allowance is also made when there is objective evidence that the Company will not be able to collect all amounts due according to the original terms of the receivables. Bad debts are written off when identified. The Company extends unsecured credit to customers in the normal course of business and believes all accounts receivable in excess of the allowances for doubtful receivables to be fully collectible. The Company does not accrue interest on trade accounts receivable.
	Notes receivable
	Notes receivable represent banks' acceptances that have been arranged with third-party financial institutions by certain customers to settle their purchases from us. These banks' acceptances are non-interest bearing and are collectible within six months.
	Inventories
	Inventories are stated at lower of cost or market. Cost is determined using the weighted average method. Inventory includes raw materials, packing materials, consumables, work in progress and finished goods. The variable production overhead is allocated to each unit of production on the basis of the actual use of the production facilities. The allocation of fixed production overhead to the costs of conversion is based on the normal capacity of the production facilities.
	Property, plant and equipment
	Property, plant and equipment are stated at cost less accumulated depreciation. Cost represents the purchase price of the asset and other costs incurred to bring the asset into its existing use. Maintenance, repairs and betterments, including replacement of minor items, are charged to expense; major additions to physical properties are capitalized.
	Depreciation of property, plant and equipment is provided using the straight-line method over their estimated useful lives at the following annual rates:
	Buildings			2.5% - 10	%
	Furniture, fixtures and office equipment			20	%
	Leasehold improvement			20 - 50	%
	Machinery and equipment			10	%
	Motor vehicles			20	%
	Upon sale or disposal, the applicable amounts of asset cost and accumulated depreciation are removed from the accounts and the net amount less proceeds from disposal is charged or credited to income.
	Construction in progress represents capital expenditures for direct costs of construction or acquisition and design fees incurred, and the interest expense directly related to the construction. Capitalization of these costs ceases and the construction in progress is transferred to the appropriate category of property, plant and equipment when substantially all the activities necessary to prepare the assets for their intended use are completed. Construction in progress is not depreciated.
	Land use rights, net
	Land use rights represent payments for the rights to use certain parcels of land for a certain period of time in the PRC. Land use rights are carried at cost and charged to expense on a straight-line basis over the period the rights are granted.
	Intangible assets
	Intangible assets represent a royalty-bearing, non-exclusive license to use certain patents owned by Ovonic Battery Company, Inc. (“Ovonic”), an unrelated party, to manufacture rechargeable nickel metal hydride batteries for portable consumer applications (“Consumer Batteries”) in the PRC, and a royalty-bearing, non-exclusive worldwide license to use certain patents owned by Ovonic to manufacture, sell and distribute Consumer Batteries. The value of the licenses was established based on historic acquisition costs.
	An exclusive proprietary technology contributed by the four founding management members of GZ Highpower in exchange for the paid-in capital of GZ Highpower is recorded at the four management members' historical cost basis of nil.
	Intangible assets are amortized over their estimated useful lives, and are reviewed annually for impairment, or more frequently, if indications of possible impairment exist.
	Government grants
	Government grants are recognized when received and all the conditions for their receipt have been met.
	Specifically, government grants whose primary condition is that the Company should purchase, construct or otherwise acquire non-current assets is recognized on the consolidated balance sheet as deferred income and deducted in calculating the carrying amount of the related asset. The revenue from such grants is recognized in profit or loss over the life of the related depreciable asset as a reduction of depreciation expense. As of September 30, 2014 and December 31, 2013, the Company recorded deferred income of $1,635,959 and $657,521, respectively, for the government grants to purchase non-current assets.
	Government grants as compensation for expenses or losses already incurred or for the purpose of giving immediate financial support to the Company with no future related benefit are recognized as other income in the period in which they become receivable. In the nine months ended September 30, 2014 and 2013, approximately $292,197 and $345,718 of government grants were recognized as other income, respectively.
	Revenue recognition
	The Company recognizes revenue when persuasive evidence of an arrangement exists, the sales price is fixed or determinable, delivery of the product has occurred, title and risk of loss have transferred to the customers and collectability of the receivable is reasonably assured. The majority of domestic sales contracts transfer title and risk of loss to customers upon receipt. The majority of oversea sales contracts transfer title and risk of loss to customers when goods were delivered to the carriers. Revenue is presented net of any sales tax and value added tax.
	The Company does not have arrangements for returns from customers and does not have any future obligations directly or indirectly related to product resale by customers. The Company has no incentive programs.
	Cost of sales
	Cost of revenues consists primarily of material costs, employee compensation, depreciation and related expenses, which are directly attributable to the production of products. Write-down of inventories to lower of cost or market is also recorded in cost of revenues.
	Shipping and handling
	Shipping and handling expenses are recorded as selling expenses when occurred. Shipping and handling expenses relating to sales were $663,069 and $582,907, respectively, for the nine months ended September 30, 2014 and 2013.
	Research and development
	Research and development expenses include expenses directly attributable to the conduct of research and development programs, including the expenses of salaries, employee benefits, materials, supplies, and maintenance of research equipment. All expenditures associated with research and development are expensed as incurred.
	Advertising
	Advertising, which generally represents the cost of promotions to create or stimulate a positive image of the Company or a desire to buy the Company's products and services, is expensed as incurred. No significant advertising expense was recorded for the nine months ended September 30, 2014 and 2013.
	Share-based compensation
	The Company recognizes compensation expense associated with the issuance of equity instruments to employees for their services. The fair value of the equity instruments is estimated on the date of grant and is expensed in the financial statements over the vesting period. The input assumptions used in determining fair value are the expected life, expected volatility, risk-free rate and the dividend yield.
	Share-based compensation associated with the issuance of equity instruments to nonemployees is measured with the fair value of the equity instrument issued or committed to be issued, as this is more reliable than the fair value of the services received. The fair value is measured at the date that the commitment for performance by the counterparty has been reached or the counterparty's performance is complete.
	Income taxes
	The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements or tax returns. Under this method, deferred income taxes are recognized for the tax consequences in future years of differences between the tax bases of assets and liabilities and their financial reporting amounts at each period end based on enacted tax laws and statutory tax rates applicable to the periods in which the differences are expected to affect taxable income. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount expected to be realized.
	Uncertain tax positions
	The Company accounts for uncertainty in income taxes using a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon settlement. The Company classifies the liability for unrecognized tax benefits as current to the extent that the Company anticipates payment (or receipt) of cash within one year. Interest and penalties related to uncertain tax positions are recognized and recorded as necessary in the provision for income taxes. There were no uncertain tax positions as of September 30, 2014 and December 31, 2013.
	Comprehensive income
	Recognized revenue, expenses, gains and losses are included in net income or loss. Although certain changes in assets and liabilities are reported as separate components of the equity section of the consolidated balance sheet, such items, along with net income, are components of comprehensive income or loss. The components of other comprehensive income or loss are consisted solely of foreign currency translation adjustments, net of the income tax effect.
Foreign currency translation and transactions
Highpower's functional currency is the United States dollar ("US$"). HKHTC's functional currency is the Hong Kong dollar ("HK$"). The functional currency of the Company's subsidiaries in the PRC is the Renminbi ("RMB").
Most of the Company's oversea sales are priced and settled with US$. At the date a foreign currency transaction is recognized, each asset, liability, revenue, expense, gain, or loss arising from the transaction is measured initially in the functional currency of the recording entity by use of the exchange rate in effect at that date. The increase or decrease in expected functional currency cash flows upon settlement of a transaction resulting from a change in exchange rates between the functional currency and the currency in which the transaction is denominated is recognized as foreign currency transaction gain or loss that is included in determining net income for the period in which the exchange rate changes. At each balance sheet date, recorded balances that are denominated in a foreign currency are adjusted to reflect the current exchange rate.
The Company's reporting currency is US$. Assets and liabilities of HKHTC and the PRC subsidiaries are translated at the current exchange rate at the balance sheet dates, revenues and expenses are translated at the average exchange rates during the reporting periods, and equity accounts are translated at historical rates. Translation adjustments are reported in other comprehensive income.
Segment Reporting
The Company uses the “management approach” in determining reportable operating segments. The management approach considers the internal organization and reporting used by the Company's chief operating decision maker for making operating decisions and assessing performance as the source for determining the Company's reportable segments. The Company's reportable segments are based on products, geography, legal structure, management structure, or any other manner in which management disaggregates a company. Therefore the Company categorizes its business into three reportable segments, namely (i) Ni-MH Batteries; (ii) Lithium Batteries; and (iii) New Materials.
Fair value of financial instruments
The carrying values of the Company's financial instruments, including cash and cash equivalents, restricted cash, trade and other receivables, deposits, trade and other payables, and bank borrowings, approximate their fair values due to the short-term maturity of such instruments.
The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and it considers assumptions that market participants would use when pricing the asset or liability.
The Company establishes a fair value hierarchy that requires maximizing the use of observable inputs and minimizing the use of unobservable inputs when measuring fair value. A financial instrument's categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
The Company measures fair value using three levels of inputs that may be used to measure fair value:
-Level 1 applies to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities.
-Level 2 applies to assets or liabilities for which there are inputs other than quoted prices included within Level 1 that are observable for the asset or liability such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical assets or liabilities in markets with insufficient volume or infrequent transactions (less active markets); or model-derived valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data.
-Level 3 applies to assets or liabilities for which there are unobservable inputs to the valuation methodology that are significant to the measurement of the fair value of the assets or liabilities.
Warrant Liabilities
For warrants that are not indexed to the Company's stock, the Company records the fair value of the issued warrants as a liability at each balance sheet date and records changes in the estimated fair value as a non-cash gain or loss in the consolidated statement of operations and comprehensive loss. The fair values of these warrants have been determined using the Black-Scholes pricing model. The Black-Scholes pricing model provides for assumptions regarding volatility, call and put features and risk-free interest rates within the total period to maturity. These values are subject to a significant degree of judgment on the part of the Company.
Derivatives
From time to time the Company may utilize foreign currency forward contracts to reduce the impact of foreign currency exchange rate risk. Management considered that the foreign currency forwards did not meet the criteria for designated hedging instruments and hedged transactions to qualify for cash flow hedge or fair value hedge accounting. The currency forwards therefore are accounted for as derivatives, with fair value changes reported as gain (loss) of derivative instruments in the income statement.
Earnings per share
Basic earnings per share (“EPS”) is computed by dividing income attributable to holders of common shares by the weighted average number of common shares outstanding during the year. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common shares were exercised or converted into common shares. Potential dilutive securities are excluded from the calculation of diluted EPS in loss periods as their effect would be anti-dilutive.
Recently issued accounting pronouncements
As of November 12, 2014, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2013-01 up to ASU No. 2014-16, which are not expected to have a material impact on the consolidated financial statements upon adoption.

Restricted_cash

Restricted cash	9 Months Ended
	Sep. 30, 2014
Restricted cash [Abstract]	'
Restricted cash	'
	3	Restricted cash
	As of September 30, 2014 and December 31, 2013, restricted cash consisted of the following:
			September 30,		December 31,
			2014		2013
			(Unaudited)
			$		$
	Securities for bank acceptance bill			13,113,711		14,132,921
	Time deposits			2,353,927		14,453,200
				15,467,638		28,586,121
	During the nine months ended September 30, 2014, the Company repaid a series of short-term borrowings which resulted in a decrease in time deposits as of September 30, 2014.

Accounts_receivable_net

Accounts receivable, net	9 Months Ended
	Sep. 30, 2014
Accounts receivable, net [Abstract]	'
Accounts receivable, net	'
	4	Accounts receivable, net
	As of September 30, 2014 and December 31, 2013, accounts receivable consisted of the following:
			September 30,		December 31,
			2014		2013
			(Unaudited)
			$		$
	Accounts receivable			40,604,434		36,467,233
	Less: allowance for doubtful debts			2,497,016		2,506,219
				38,107,418		33,961,014
	The Company recorded bad debt expense of $103 during the nine months ended September 30, 2014, and the Company reversed bad debt expenses of $3,643 during the nine months ended September 30, 2013.
	The Company wrote off accounts receivable of $2,948 and $1,713, respectively, in the nine months ended September 30, 2014 and 2013.

Prepayments

Prepayments	9 Months Ended
	Sep. 30, 2014
Prepayments [Abstract]	'
Prepayments	'
	5	Prepayments
			September 30,		December 31,
			2014		2013
			(Unaudited)
			$		$
	Purchase deposits paid			2,303,820		2,876,267
	Value-added tax prepayment			1,094,804		1,032,619
	Deferred share-based compensation			-		131,812
	Rental deposit			265,543		209,095
	Deferred insurance fee			72,752		53,297
	Advances to staff for operations			138,425		48,499
	Other deposits and prepayments			607,631		618,154
				4,482,975		4,969,743
	Other deposits and prepayments represent deferred expenses and prepayments to services providers.

Other_receivables

Other receivables	9 Months Ended
	Sep. 30, 2014
Other receivables [Abstract]	'
Other receivables	'
	6	Other receivables
			September 30,		December 31,
			2014		2013
			(Unaudited)
			$		$
	Deposit for land use right			514,361		518,603
	Others			201,189		545,053
				715,550		1,063,656

Inventories

Inventories	9 Months Ended
	Sep. 30, 2014
Inventories [Abstract]	'
Inventories	'
	7	Inventories
			September 30,		December 31,
			2014		2013
			(Unaudited)
			$		$
	Raw materials			4,799,204		4,281,232
	Work in progress			2,516,244		2,047,627
	Finished goods			12,864,660		13,087,995
	Packing materials			25,647		20,591
	Consumables			361,444		301,915
				20,567,199		19,739,360
	Where there is evidence that the utility of inventories, in their disposal in the ordinary course of business, will be less than cost, whether due to physical deterioration, obsolescence, changes in price levels, or other causes, the inventories are written down to fair value. $747,340 and $138,213 was written down for inventories in the nine months ended September 30, 2014 and 2013, respectively.

Property_plant_and_equipment_n

Property, plant and equipment, net	9 Months Ended
	Sep. 30, 2014
Property, plant and equipment, net [Abstract]	'
Property, plant and equipment, net	'
	8	Property, plant and equipment, net
			September 30,		December 31,
			2014		2013
			(Unaudited)
			$		$
	Cost
	Construction in progress			2,583,000		6,681,652
	Furniture, fixtures and office equipment			3,691,244		3,282,818
	Leasehold improvement			2,044,879		940,089
	Machinery and equipment			26,119,952		24,600,773
	Motor vehicles			1,339,782		1,430,611
	Building			25,541,312		21,521,416
				61,320,169		58,457,359
	Less: accumulated depreciation			11,936,636		9,909,156
				49,383,533		48,548,203
	The Company recorded depreciation expenses of $3,051,069 and $1,722,992 for the nine months ended September 30, 2014 and 2013, and $1,071,176 and $621,589 for the three months ended September 30, 2014 and 2013, respectively.
	During the nine months ended September 30, 2014 and 2013, the Company deducted deferred income related to government grants of $669,995 and $nil, respectively, in calculating the carrying amount of property, plant and equipment.
	The buildings comprising the Huizhou facilities were pledged as collateral for bank loans as of September 30, 2014 and December 31, 2013. The carrying amount of the building was $10,595,293 and $10,867,411 as of September 30, 2014 and December 31, 2013, respectively.

Land_use_rights_net

Land use rights, net	9 Months Ended
	Sep. 30, 2014
Land use rights, net [Abstract]	'
Land use rights, net	'
	9	Land use rights, net
				September 30,			December 31,
				2014			2013
				(Unaudited)
					$			$
	Cost
	Land located in Huizhou				3,491,953			3,520,752
	Land located in Ganzhou				1,362,280			1,373,515
					4,854,233			4,894,267
	Accumulated amortization				(541,798	)		(472,852	)
	Net				4,312,435			4,421,415
	As of September 30, 2014, land use rights of the Company included certain parcels of land located in Huizhou City, Guangdong Province, PRC and Ganzhou City, Jiangxi Province, PRC. Land use rights for land in Huizhou City with an area of approximately 126,605 square meters and in Ganzhou City with an area of approximately 58,669 square meters will expire on May 23, 2057 and January 4, 2062, respectively.
	Land use rights are being amortized annually using the straight-line method over a contract term of 50 years. Estimated amortization for the coming years is as follows:
			$
	Remaining 2014			24,222
	2015			97,087
	2016			97,087
	2017			97,087
	2018			97,087
	2019			97,087
	2020 and thereafter			3,802,778
				4,312,435
	The Company recorded amortization expenses of $72,815 and $72,104 for the nine months ended September 30, 2014 and 2013, respectively, and $24,222 and $24,214 for the three months ended September 30, 2014 and 2013, respectively.
	The land use right for land located in Huizhou City was pledged as collateral for bank loans as of September 30, 2014 and December 31, 2013.

Intangible_asset

Intangible asset	9 Months Ended
	Sep. 30, 2014
Intangible assets, net [Abstract]	'
Intangible asset	'
	10	Intangible asset
			September 30,			December 31,
			2014			2013
			(Unaudited)
				$			$
	Cost
	Consumer battery license fee			1,000,000			1,000,000
	Accumulated amortization			(387,500	)		(350,000	)
	Net			612,500			650,000
	The Company is amortizing the $1,000,000 cost of the Consumer Battery License Agreement with Ovonic over a period of 20 years on the straight line basis over the estimated useful life of the underlying technology, which is based on the Company's assessment of existing battery technology, current trends in the battery business, potential developments and improvements, and the Company's current business plan.
	As of September 30, 2014 and December 31, 2013, the Company had an exclusive proprietary technology with historical cost of zero but still in use. The exclusive proprietary technology was contributed by four founding management members of GZ Highpower in exchange for the paid-in capital of GZ Highpower. The historical cost basis was recorded at $nil at the four management members' historical cost basis.
	Amortization expenses included in selling and distribution expenses were $37,500 for the nine months ended September 30, 2014 and 2013, and $12,500 for the three months ended September 30, 2014 and 2013.

Other_payables_and_accrued_lia

Other payables and accrued liabilities	9 Months Ended
	Sep. 30, 2014
Other payables and accrued liabilities [Abstract]	'
Other payables and accrued liabilities	'
		11	Other payables and accrued liabilities
			September 30,		December 31,
			2014		2013
			(Unaudited)
			$		$
	Accrued expenses			4,100,994		3,877,095
	Royalty payable			577,721		582,486
	VAT payable			588,864		1,406,086
	Sales deposits received			1,216,310		1,574,258
	Other payables			336,010		361,506
				6,819,899		7,801,431

Taxation

Taxation	9 Months Ended
	Sep. 30, 2014
Taxation [Abstract]	'
Taxation	'
		12	Taxation
	The Company and its subsidiaries file tax returns separately.
	1) VAT
	Pursuant to the Provisional Regulation of the PRC on VAT and the related implementing rules, all entities and individuals ("taxpayers") that are engaged in the sale of products in the PRC are generally required to pay VAT at a rate of 17% of the gross sales proceeds received, less any deductible VAT already paid or borne by the taxpayers. Further, when exporting goods, the exporter is entitled to a portion of or all the refund of VAT that it has already paid or incurred. The Company's PRC subsidiaries are subject to VAT at 17% of their revenues.
	2) Income tax
	United States
	Highpower was incorporated in Delaware and is subject to U.S. federal income tax with a system of graduated tax rates ranging from 15% to 35%. As Highpower does not conduct any business in the U.S. or Delaware, it is not subject to U.S. or Delaware state corporate income tax. No deferred U.S. taxes are recorded since all accumulated profits in the PRC will be permanently reinvested in the PRC.
	Hong Kong
	HKHTC, which is incorporated in Hong Kong, is subject to a corporate income tax rate of 16.5%.
	PRC
	In accordance with the relevant tax laws and regulations of the PRC, a company registered in the PRC is subject to income taxes within the PRC at the applicable tax rate on taxable income.
	SZ Highpower has obtained the approval and is qualified as a High-Tech Enterprise ("NHTE") status by the Shenzhen Tax Bureau according to the PRC Enterprise Income Tax Law. It is eligible to enjoy a preferential tax rate of 15% from 2011 to 2013. SZ Highpower has reapplied for High-Tech Enterprise status in the second quarter of 2014. If SZ Highpower fails to obtain the approval in 2014, SZ Highpower will be subject to income tax at a rate of 25% starting with calendar year 2014.
	SZ Springpower received High-Tech Enterprise ("NHTE") status in 2013, which is valid for 3 calendar years. As a result, SZ Springpower is entitled to a preferential enterprise income tax rate of 15% from 2013 to 2015. SZ Springpower will reapply for High-Tech Enterprise status in 2016. If SZ Springpower fails to obtain the approval in 2016, SZ Springpower will be subject to income tax at a rate of 25% starting with calendar year 2016.
	All the other PRC subsidiaries are not entitled to any tax holiday. They were subject to income tax at a rate of 25% for calendar years 2014 and 2013.
	The components of the provision for income taxes expenses are:
				Three months ended						Nine months ended
				September 30,						September 30,
				2014			2013			2014			2013
				(Unaudited)			(Unaudited)			(Unaudited)			(Unaudited)
					$			$			$			$
	Current				720,932			311,110			1,459,285			656,165
	Deferred				(281,273	)		60,913			(830,413	)		(76,813	)
	Total				439,659			372,023			628,872			579,352
	The reconciliation of income tax expense computed at the statutory tax rate applicable to the Company to income tax expense is as follows:
				Three months ended						Nine months ended
				September 30,						September 30,
				2014			2013			2014			2013
				(Unaudited)			(Unaudited)			(Unaudited)			(Unaudited)
					$			$			$			$
	Income before tax				1,245,803			1,080,808			1,250,800			717,057
	Provision for income taxes at applicable income tax rate				154,019			271,265			73,150			168,845
	Effect of preferential tax rate				(332,606	)		(32,272	)		(546,529	)		11,698
	R&D expenses eligible for super deduction				74			-			(71,531	)		-
	Non-deductible expenses				43,591			22,092			124,082			65,791
	Change in valuation allowance				574,581			110,938			1,049,700			333,018
	Effective enterprise income tax				439,659			372,023			628,872			579,352
	3) Deferred tax assets
	Deferred tax assets and deferred tax liabilities reflect the tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purpose and the tax bases used for income tax purpose. The following represents the tax effect of each major type of temporary difference.
				September 30,			December 31,
				2014			2013
				(Unaudited)
					$			$
	Tax loss carry-forward				4,080,648			2,601,823
	Allowance for doubtful receivables				111,109			112,446
	Allowance for inventory obsolescence				191,410			46,441
	Fair value change of currency forwards				746			(9,493	)
	Difference for sales cut-off				47,068			46,824
	Deferred income				245,394			168,880
	Property, plant and equipment subsidized by government grant				164,358			-
	Total gross deferred tax assets				4,840,733			2,966,921
	Valuation allowance				(3,214,287	)		(2,164,696	)
	Total net deferred tax assets				1,626,446			802,225

Notes_payable

Notes payable	9 Months Ended
	Sep. 30, 2014
Notes payable [Abstract]	'
Notes payable	'
		13	Notes payable
	Notes payable are presented to certain suppliers as a payment against the outstanding trade payables. These notes payable are bank guarantee promissory notes which are non-interest bearing and generally mature within nine months. The outstanding bank guarantee promissory notes are secured by restricted cash deposited in banks. Outstanding notes payable were $27,002,824 and $25,271,256 as of September 30, 2014 and December 31, 2013, respectively.

Shortterm_loans

Short-term loans	9 Months Ended
	Sep. 30, 2014
Short-term loans [Abstract]	'
Short-term loans	'
		14	Short-term loans
			September 30,		December 31,
			2014		2013
			(Unaudited)
			$		$
	Short- term bank loans guaranteed and repayable within one year			15,817,971		36,142,105
	As of September 30, 2014, the above bank borrowings were for working capital and capital expenditure purposes and were secured by personal guarantees executed by certain directors of the Company, a land use right with a carrying amount of $3,020,539, the building with a carrying amount of $10,595,293.
	The loans as of September 30, 2014 were primarily obtained from three banks with interest rates ranging from 1.0% to 7.5% per annum. The interest expenses were $1,240,334 and $741,153 for the nine months ended September 30, 2014 and 2013, respectively, and $370,775 and $321,965 for the three months ended September 30, 2014 and 2013, respectively.

Lines_of_credit

Lines of credit	9 Months Ended
	Sep. 30, 2014
Line of credit [Abstract]	'
Lines of credit	'
	15	Lines of credit
	The Company entered into various credit contracts and revolving lines of credit, which were used for short-term loans and bank acceptance bills. The following tables summarize the unused lines of credit as of September 30, 2014 and December 31, 2013:
			September 30, 2014 (Unaudited)
	Lender		Starting date	Maturity date		Line of credit			Unused line of credit
							$			$
	Bank of China		3/10/14	3/10/15			12,603,060			285,381
	Bank of China		7/23/14	7/23/15			3,949,346			67,247
	Industrial and Commercial Bank of China		7/26/12	7/25/15			6,504,805			5,041,224
	The Shanghai Cmmercial&saving		8/19/14	11/19/14			4,500,000			4,500,000
	China Minsheng Banking Corp.,Ltd		5/22/14	5/21/15			3,252,403			3,252,403
	China Citic  Bank		6/25/14	6/25/15			8,014,850			6,104,063
	Total						38,824,464			19,250,318
			31-Dec-13
	Lender		Starting date	Maturity date	Line of credit			Unused line of credit
						$			$
	Industrial and Commercial Bank of China		7/26/12	7/25/2015(ii)		6,558,452			1,803,574
	China Citic Bank		3/29/13	3/29/2014(ii)		7,378,259			5,738,646
	Bank of China		1/25/13	1/25/2014(i)		3,689,129			247,582
	Bank of China		1/10/13	1/10/2014(ii)		12,707,001			1,674,876
	China Everbright Bank		5/30/13	5/29/2014(i)		8,438,433			1,382,194
	China Everbright Bank		9/4/13	9/3/2014(i)		1,147,729			-
	Industrial Bank Co., Ltd		7/24/13	7/24/2014(i)		8,198,065			6,558,452
	Jiang Su Bank Co., Ltd		6/21/13	6/20/2014(i)		4,918,839			-
	Ping An Bank		11/12/13	9/17/2014(i)		11,477,291			7,564,027
	Shanghai Commercial & Saving Bank		8/29/13	8/29/2014(i)		3,000,000			1,250,000
	Industrial and Commercial Bank of China(Macau) Ltd		7/29/13	1/29/2014(i)		7,093,296			3,084,294
	Total					74,606,494			29,303,645
	(i) The lines of credit from these banks are terminated at maturity dates.
	(ii) The lines of credit from these banks are rolled over after maturity dates.
	The lines of credits from Bank of China, Industrial and Commercial Bank of China, China Everbright Bank, Jiang Su Bank, Industrial Bank Co. Ltd, Ping An Bank Co., Ltd and China Citic Bank are guaranteed by the Company's Chief Executive Officer, Mr. Dang Yu Pan.
	Certain of the agreements governing the Company's loans include standard affirmative and negative covenants, including restrictions on granting additional pledges on the Company's property and incurring additional debt and obligations to provide advance notice of major corporate actions, and other covenants including: that the borrower may not serve as a guarantor for more than double its net assets; that the borrower is restricted in certain circumstances from using the loans in connection with related party transactions or other transactions with affiliates; that the borrower must provide monthly reports to certain lenders describing the actual use of loans; that the borrower may need to obtain approval to engage in major corporate transactions; and that the borrower may need to obtain approval to increase overseas investments, guarantee additional debt or incur additional debt by an amount which exceeds 20% of its total net assets should the lender determine that such action would have a material impact on the ability of the borrower to repay the loan. The covenants in these loan agreements could prohibit the Company from incurring any additional debt without consent from its lenders. The Company believes it would be able to obtain consents from the lenders in the event it needed to do so. The agreements governing the Company's loans may also include covenants that, in certain circumstances, may require the Company's PRC operating subsidiaries to give notice to, or obtain consent from, certain of their lenders prior to making a distribution of net profit, as well as covenants restricting the ability of the Company's PRC operating subsidiaries from extending loans. As of September 30, 2014 and December 31, 2013, the Company was in compliance with all material covenants in its loan agreements.

Longterm_loans

Long-term loans	9 Months Ended
	Sep. 30, 2014
Long-term loans [Abstract]	'
Long-term loans	'
	16	Long-term loans
				30-Sep-14		December 31, 2013
				(Unaudited)
					$		$
	Long term loans from Bank of China				4,390,744		5,902,607
	Less: current portion of long-term borrowings				1,951,442		1,967,536
	Long- term bank loans, net of current portion				2,439,302		3,935,071
	On January 13, 2012, the Company borrowed $8,127,042 (RMB50 million) from the Bank of China, which is guaranteed by the Company's Chief Executive Officer, Mr. Dang Yu Pan. It is a five-year long-term loan, with an annual interest rate of 7.04%, which was equal to 110% of the benchmark-lending rate of the People's Bank of China (“PBOC”) as of September 30, 2014. Interest expenses are to be paid quarterly.
	The interest expenses were $287,743 and $404,965 for the nine months ended September 30, 2014 and 2013, respectively, and $87,759 and $122,741 for the three months ended September 30, 2014 and 2013, respectively.
	The principal is to be repaid quarterly from September 30, 2012. 2% of the principal was repaid on each of September 30, 2012 and December 30, 2012, respectively. Thereafter 6% of the principal is to be repaid every quarter after December 31, 2012 until the maturity date. The repayment schedule of the principal is summarized as in below table:
			$
	Remaining 2014			487,860
	2015			1,951,442
	2016			1,951,442
				4,390,744

Sharebased_compensation

Share-based compensation	9 Months Ended
	Sep. 30, 2014
Share-based compensation [Abstract]	'
Share-based compensation	'
	17	Share-based Compensation
	2008 Omnibus Incentive Plan
	The 2008 Omnibus Incentive Plan (the "2008 Plan") was approved by the Company's Board of Directors on October 29, 2008 to be effective at such date, subject to approval of the Company's stockholders, which occurred on December 11, 2008. The 2008 Plan has a ten year term. The 2008 Plan reserves two million shares of common stock for issuance, subject to adjustment in the event of a recapitalization in accordance with the terms of the 2008 Plan.
	The 2008 Plan authorizes the issuance of awards including stock options, restricted stock units (RSUs), restricted stock, unrestricted stock, stock appreciation rights (SARs) and other equity and/or cash performance incentive awards to employees, directors, and consultants of the Company. Subject to certain restrictions, the Compensation Committee of the Board of Directors has broad discretion to establish the terms and conditions for awards under the 2008 Plan, including the number of shares, vesting conditions and the required service or performance criteria. Options and SARs may have a contractual term of up to ten years and generally vest over three to five years with an exercise price equal to the fair market value on the date of grant. Incentive stock options (ISOs) granted must have an exercise price equal to or greater than the fair market value of the Company's common stock on the date of grant. Repricing of stock options and SARs is permitted without stockholder approval. If a particular award agreement so provides, certain change in control transactions may cause such awards granted under the 2008 Plan to vest at an accelerated rate, unless the awards are continued or substituted for in connection with the transaction As of September 30, 2014, approximately 661,204 shares of common stock remained available for issuance pursuant to awards granted under the 2008 Plan.
	Options Granted to Employees
			Number of			Weighted		Remaining
			Shares			Average		Contractual
						Exercise Price		Term in Years
						$
	Outstanding, January 1, 2013			665,000			2.81		8.35
	Granted			540,000			2.63		-
	Exercised			-			-		-
	Forfeited			(100,000	)		1.15		-
	Canceled			-			-		-
	Outstanding, December 31, 2013			1,105,000			2.87		8.51
	Exercisable, December 31, 2013			380,000			3.14		7.19
	Vested and expected to vest, December 31, 2013			940,022			2.9		8.33
			Number of			Weighted		Remaining
			Shares			Average		Contractual
						Exercise Price		Term in Years
						$
	Outstanding, January 1, 2014			1,105,000			2.87		8.51
	Granted			-			-		-
	Exercised			(160,000	)		2.69		-
	Forfeited			(29,204	)		2.63		-
	Canceled			-			-		-
	Outstanding, September 30, 2014			915,796			2.91		7.23
	Exercisable, September 30, 2014			265,000			3.45		3.96
	Vested and expected to vest, September 30, 2014			837,760			2.93		7.08
	The aggregate intrinsic value of options vested and expected to vest as of September 30, 2014 and December 31, 2013 was approximately $4.6 million and $nil, respectively. Intrinsic value is calculated as the amount by which the current market value of a share of common stock exceeds the exercise price multiplied by the number of option shares.
	During the nine months ended September 30, 2014, the Company did not grant any new options to employees. One employee exercised his options to purchase 160,000 shares of the Company's common stock. As a result, the Company issued 74,052 shares of common stock to this employee by net share settlement. Two employees had resigned and their options to purchase a total of 29,204 shares of the Company's common stock were forfeited.
	During the nine months ended September 30, 2013, no options was granted, exercised or forfeited.
	The estimated fair value of share-based compensation to employees is recognized as a charge against income on a ratable basis over the requisite service period, which is generally the vesting period of the award.
	Restricted Stock Awards Granted to Employees
	During the year ended December 31, 2013 the Company granted 246,000 shares of restricted stock to members of the Board of Directors as Restricted Stock Awards (“RSA”) under 2008 Plan. The RSAs granted in 2013 had the following vesting periods; 30% immediately upon grant, 30% vest on first anniversary of the grant date, and 40% vest on the second anniversary of grant date. The RSAs are governed by agreements between the Company and recipients of the awards. Terms of the agreements are determined by the Compensation Committee. There were no RSAs granted to employees during the nine months ended September 30, 2014 and 2013.
	The following table summarizes the restricted stock awards activities for the nine months ended September 30, 2014:
			Number			Weighted		Remaining
			of Shares			Average		Contractual
						Exercise		Term in Years
						Price
						$
	Outstanding, January 1, 2014			172,200			2.81		1.77
	Granted			-			-
	Exercised			-			-
	Forfeited			-			-
	Outstanding, September 30, 2014			172,200			2.81		1.02
	Expected to vest, September 30, 2014			137,601			2.81		1.02
	Share-based Compensation to Nonemployees
	On July 15, 2013, the Company entered into an agreement with a consulting firm. In return for the consulting firm's financial advisory service in the coming two years, the Company issued an aggregate of 150,000 shares of the Company's common stock to the consulting firm on August 15, 2013. The shares were fully vested upon issuance and the fair value of the shares was $171,000 which was based on the closing market price of the Company's common stock on August 15, 2013. The share-based compensation was being amortized over the consulting service period. In the second quarter of 2014, the service agreement was terminated. Therefore, the remaining unamortized balance, approximately $131,812, was recognized as share-based compensation expense during the nine months ended September 30, 2014.
	The Company also agreed to issue another 150,000 shares of the Company's common stock to the consulting firm after a specific financing target is completed. As the financing target was not achieved before the termination of the service agreement in the second quarter of 2014, such 150,000 shares of common stock was not issued to the consulting firm.
	Also, in connection with this consulting agreement, on January 17, 2014 the Company issued five year warrants to purchase 200,000 shares of the Company's common stock. The shares were fully vested upon issuance and the aggregate fair value of the warrants was approximately $390,000, which was calculated using the Black-Scholes pricing model, with the following weighted-average assumptions:
			Nine Months Ended
			September 30,
			2014			2013
	Expected volatility			83.6	%		-
	Risk-free interest rate			1.64	%		-
	Expected term from grant date (in years)			5			-
	Dividend rate			-			-
	Fair value			1.95			-
	Expected Term
	The expected term of the warrants issued during the nine months ended September 30, 2014, represents the remaining contractual term of the warrants.
	Expected Volatility
	The expected volatility used for the nine-month periods ended September 30, 2014 is based upon the Company's own trading history.
Risk-Free Interest Rate
The risk-free interest rate assumption is based on U.S. Treasury instruments with a term consistent with the remaining contractual term of the warrants issued during the first quarter of 2014.
Dividend Yield
The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and therefore, used an expected dividend yield of zero in the valuation model.
Forfeitures
The Company estimates forfeitures at the time of grant and revises the estimates in subsequent periods if actual forfeitures differ from what was estimated. The forfeiture rate is applied to stock options and restricted stock awards. The Company uses historical data to estimate pre-vesting forfeitures and records stock-based compensation expense only for those awards that are expected to vest. All stock-based payment awards are amortized on a ratable basis over the requisite service periods of the awards, which are generally the vesting periods. The Company records stock-based compensation expense only for those awards that are expected to vest.
The fair value of the warrants are being amortized over the remaining consulting service period. For the three months ended March 31, 2014, approximately $154,291 was recognized as stock-based compensation expense and approximately $235,496 remains capitalized on the balance sheet as of March 31, 2014, which will be amortized to expense over the next five quarters. In the second quarter of 2014, the service agreement was terminated. Therefore, the remaining unamortized balance, approximately $235,000, was recognized as share-based compensation expense during the three months ended June 30, 2014.
Total Share-based Compensation Expenses
As of September 30, 2014 the gross amount of unrecognized share-based compensation expense relating to unvested share-based awards held by employees was approximately $1.1 million, which the Company anticipates recognizing as a charge against income over a weighted average period of 1.80 years.
In connection with the grant of stock options, restricted stock awards and warrants to employees and nonemployees, the Company recorded stock-based compensation charges of $543,369 and $521,599, respectively, for the nine-month period ended September 30, 2014 and stock-based compensation charges of $141,037 and $18,315, respectively, for the nine-month period ended September 30, 2013. The Company recorded stock-based compensation charges of $148,725 and $nil, respectively, for the three-month period ended September 30, 2014 and stock-based compensation charges of $46,830 and $17,812, respectively, for the three-month period ended September 30, 2013.

Earnings_per_share

Earnings per share	9 Months Ended
	Sep. 30, 2014
Earnings per share [Abstract]	'
Earnings per share	'
	18	Earnings per share
	Basic earnings per common share is computed by dividing income available to common stockholders by the weighted-average number of shares of common stock outstanding during the period. Diluted earnings per common share is computed by dividing income available to common stockholders by the weighted-average number of shares of common stock outstanding during the period increased to include the number of additional shares of common stock outstanding that would have been outstanding if the potentially dilutive securities had been issued. Potentially dilutive securities include outstanding stock options, restricted shares. The dilutive effect of potential dilutive securities is reflected in diluted earnings per common share by application of the treasury stock method. Under the treasury stock method, an increase in the fair market value of the Company's common stock can result in a greater dilutive effect from potentially dilutive securities. The Company excludes potential common stock in the diluted EPS computation in periods of losses from continuing operations, as their effect would be anti-dilutive.
	The following table sets forth the computation of basic and diluted earnings per common share for the nine months ended September 30, 2014 and 2013, and the three months ended September 30, 2014 and 2013.
			Three months ended				Nine months ended
			September 30,				September 30,
			2014		2013		2014		2013
			(Unaudited)		(Unaudited)		(Unaudited)		(Unaudited)
				$		$		$		$
	Numerator:
	Net income attributable to the Company			874,167		742,228		751,516		242,637
	Denominator:
	Weighted-average shares outstanding
	- Basic			15,052,158		13,657,930		14,632,491		13,607,474
	- Diluted			15,590,142		13,657,930		15,045,776		13,607,474
	Earnings per common share
	- Basic			0.06		0.05		0.05		0.02
	- Diluted			0.06		0.05		0.05		0.02
	Diluted earnings per share takes into account the potential dilution that could occur if securities or other contracts to issue common stock were exercised and converted into common stock.
	There were 565,000 options and warrants outstanding as of September 30, 2013, which were not included in the computation of diluted EPS for the periods ended September 30, 2013 because of their excise price would be above average market value.
	915,796 shares of stock options and 200,000 shares of warrants with a total dilutive effect of 525,716 shares were included in the computation of diluted EPS for the three months ended September 30, 2014. There were 540,001 options and warrants outstanding as of September 30, 2014, which were not included in the computation of diluted EPS for the periods ended September 30, 2014 because of their excise price would be above average market value.

Securities_Offering_Transactio

Securities Offering Transaction	9 Months Ended
	Sep. 30, 2014
Securities Offering Transaction [Abstract]	'
Securities Offering Transaction	'
	19	Securities Offering Transaction
	In April 2014, the Company and certain institutional investors entered into a securities purchase agreement, pursuant to which the Company sold 1,000,000 shares of common stock and warrants exercisable for 500,000 shares of common stock in a registered direct offering at a price of $5.05 per fixed combination for aggregate proceeds of $5.05 million. The shares and warrants were sold in multiples of a fixed combination consisting of (i) one share of common stock and (ii) one immediately exercisable warrant to purchase 0.50 shares of common stock. The net proceeds from the offering was $4,633,164, after deducting fees due the placement agent and offering expenses.
	The warrants have an initial exercise price of $6.33 per share and are exercisable until April 17, 2017. The exercise price of the warrants, and in some cases the number of shares issuable upon exercise of the warrants, will be subject to appropriate adjustment in relation to certain events. In addition, if the Company issues shares in the future at a price below $6.33 per share, the exercise price of the warrants will be reduced to such lower price. No adjustment will be made to the number of shares purchasable in such event.
	The warrants were classified as a liability. The aggregate fair value of the warrant liability at issuance dates was $1,173,952. The residual balance of $3,459,212 was allocated to common shares issued.
	The fair values of the warrants as of April 17, 2014 \were calculated using the Black-Scholes pricing model with the following assumptions:
			17-Apr-14
			2014			2013
	Expected volatility			85.76	%		NA
	Risk-free interest rate			0.9	%		NA
	Expected term (in years)			3			NA
	Dividend rate			-			NA
	Fair value		$	2.3			NA
	The fair value of the investor warrant liability will be re-measured at each period and recorded as a gain or loss on fair value of warrant liability. As of September 30, 2014, the fair value of warrant liability was $2,385,739 and the Company recognized a loss of $1,286,335 on the change of fair value of warrant liability.
	The fair values of the warrants as of September 30, 2014 were calculated using the Black-Scholes pricing model with the following assumptions:
			Nine months Ended
			September 30,
			2014			2013
	Expected volatility			93.79	%		NA
	Risk-free interest rate			0.8	%		NA
	Expected term (in years)			2.6			NA
	Dividend rate			-			NA
	Fair value		$	4.8			NA
	In conjunction with the securities offering transaction, the Company issued three year warrants to investment bankers to purchase 40,000 shares of the Company's common stock at $6.33 per share. The aggregate fair value of the warrants was $94,982, which was recognized as a share-based compensation and resulted in an increase of additional paid-in capital. As such compensation was offering cost, it resulted in a reduction in additional paid-in capital. Hence, such transaction has no net impact on the Company's financial position as of September 30, 2014.

Defined_contribution_plan

Defined contribution plan	9 Months Ended
	Sep. 30, 2014
Defined contribution plan [Abstract]	'
Defined contribution plan	'
	20	Defined contribution plan
	Full-time employees of the Company in the PRC participate in a government mandated defined contribution plan, pursuant to which certain pension benefits, medical care, employee housing fund and other welfare benefits are provided to employees. Chinese labor regulations require that the PRC operating subsidiaries of the Company make contributions to the government for these benefits based on certain percentages of the employees' salaries. Except for pension benefits, medical care, employee housing fund and other welfare benefits mentioned above, the Company has no legal obligation for the benefits beyond the contributions made.
	The total amounts for such employee benefits, which were expensed as incurred, were $1,128,544 and $1,257,546 for the nine months ended September 30, 2014 and 2013, respectively, and $424,841 and $434,486 for the three months ended September 30, 2014 and 2013, respectively.

Noncontrolling_interest

Non-controlling interest	9 Months Ended
	Sep. 30, 2014
Non-controlling interest [Abstract]	'
Non-controlling interest	'
	21	Non-controlling interest
	GZ Highpower is the Company's majority-owned subsidiary which is consolidated in the Company's financial statements with a non-controlling interest recognized. GZ Highpower is engaged in processing, marketing and research of battery materials. The Company holds 60% interest of GZ Highpower as of September 30, 2014 and December 31, 2013.
	On May 15, 2013, GZ Highpower increased its paid-in capital from RMB15,000,000 ($2,381,293) to RMB30,000,000 ($4,807,847). SZ Highpower contributed to the increased paid-in capital with cash of RMB 9,000,000 ($1,456,193), while the non-controlling shareholders contributed with an exclusive proprietary technology with fair value of 6,000,000 ($970,795). The exclusive proprietary technology, however, was recorded at the four management members' historical cost basis of nil. Therefore, an increase of $582,477, which was the 40% of the RMB 9,000,000 ($1,456,193), was recorded in non-controlling interest.
	As of September 30, 2014 and December 31, 2013, non-controlling interest related to GZ Highpower in the consolidated balance sheet was $1,159,039 and $1,299,252, respectively.
	Non-controlling interest related to GZ Highpower in the consolidated statements of operations was loss of $129,588 and $104,932 for the nine months ended September 30, 2014 and 2013, respectively, and $68,023 and $33,443 for the three months ended September 30, 2014 and 2013.

Commitments_and_contingencies

Commitments and contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and contingencies [Abstract]	'
Commitments and contingencies	'
	22	Commitments and contingencies
	Operating leases commitments
	The Company leases factory and office premises under various non-cancelable operating lease agreements that expire at various dates through years 2014 to 2017, with options to renew the leases. All leases are on a fixed repayment basis. None of the leases includes contingent rentals.
	Minimum future commitments under these agreements as of September 30, 2014 are as follows:
			$
	Remaining 2014			401,347
	2015			1,480,887
	2016			1,338,853
	2017			333,989
				3,555,076
	Rent expenses for the nine months ended September 30, 2014 and 2013 were $1,183,430 and $992,054, respectively, and for the three months ended September 30, 2014 and 2013, rent expenses were $391,109 and $361,672, respectively.
	Capital commitments and contingency
	The Company had contracted capital commitments of $nil and $990,031 for the construction of the Ganzhou plant as of September 30, 2014 and December 31, 2013, respectively.

Segment_information

Segment information	9 Months Ended
	Sep. 30, 2014
Segment information [Abstract]	'
Segment information	'
	23	Segment information
	The reportable segments are components of the Company that offer different products and are separately managed, with separate financial information available that is separately evaluated regularly by the Company's chief operating decision maker (“CODM”), the Chief Executive Officer, in determining the performance of the business. The Company categorizes its business into three reportable segments, namely (i) Ni-MH Batteries; (ii) Lithium Batteries; and (iii) New Materials.
	The CODM evaluates performance based on each reporting segment's net sales, cost of sales, gross profit and total assets. Net sales, cost of sales, gross profit and total assets by segments is set out as follows:
			Three months ended September 30,							Nine months ended September 30,
			2014			2013				2014		2013
			(Unaudited)			(Unaudited)				(Unaudited)		(Unaudited)
			$			$				$		$
	Net sales
	Ni-MH Batteries			22,468,264			23,278,902				57,109,202		56,195,672
	Lithium Batteries			21,069,435			14,960,966				51,971,642		36,541,465
	New Materials			936,861			613,110				2,688,666		1,692,829
	Total			44,474,560			38,852,978				111,769,510		94,429,966
	Cost of Sales
	Ni-MH Batteries			17,843,761			19,220,485				45,357,950		45,491,987
	Lithium Batteries			16,355,265			11,859,111				40,935,690		29,664,911
	New Materials			870,414			530,395				2,410,314		1,532,442
	Total			35,069,440			31,609,991				88,703,954		76,689,340
	Gross Profit
	Ni-MH Batteries			4,624,503			4,058,417				11,751,252		10,703,685
	Lithium Batteries			4,714,170			3,101,855				11,035,952		6,876,554
	New Materials			66,447			82,715				278,352		160,387
	Total			9,405,120			7,242,987				23,065,556		17,740,626
				September 30,2014					December 31, 2013
					(Unaudited)
					$					$
	Total Assets
	Ni-MH Batteries				52,909,634					66,960,366
	Lithium Batteries				87,904,413					76,357,912
	New Materials				8,724,638					8,475,098
	Total				149,538,685					151,793,376
	All long-lived assets of the Company are located in the PRC. Geographic information about the sales and accounts receivable based on the location of the Company's customers is set out as follows:
			Three months ended September 30,							Nine months ended September 30,
			2014			2013				2014		2013
			(Unaudited)			(Unaudited)				(Unaudited)		(Unaudited)
			$			$				$		$
	Net sales
	China (including Hong Kong)			27,698,729			25,308,214				72,064,966		52,936,205
	Asia, others			3,979,662			3,975,389				8,304,209		11,084,009
	Europe			10,465,002			6,999,347				23,908,064		22,466,996
	North America			2,128,707			2,406,305				6,725,849		7,181,805
	South America			116,227			90,849				317,928		382,215
	Africa			43,872			28,877				281,016		248,275
	Others			42,361			43,997				167,478		130,461
				44,474,560			38,852,978				111,769,510		94,429,966
				30-Sep-14				December 31, 2013
					(Unaudited)
					$				$
	Accounts receivable
	China (including Hong Kong)				26,077,073				24,554,617
	Asia, others				2,564,187				3,278,001
	Europe				8,610,537				5,191,444
	North America				776,601				863,156
	South America				38,465				50,691
	Africa				22,500				25
	Others				18,055				23,080
					38,107,418				33,961,014

Summary_of_significant_account1

Summary of significant accounting policies (Policies)	9 Months Ended
	Sep. 30, 2014
Summary of significant accounting policies [Abstract]	'
Basis of presentation	'
	Basis of presentation
	The accompanying consolidated balance sheet as of December 31, 2013, which has been derived from audited financial statements, and the unaudited interim consolidated financial statements as of September 30, 2014 and for the three and nine month periods ended September 30, 2014 and 2013 have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and disclosures, which are normally included in financial statements prepared in accordance with United States generally accepted accounting principles (U.S. GAAP), have been condensed or omitted pursuant to such rules and regulations, although we believe that the disclosures made are adequate to provide for fair presentation. The interim financial information should be read in conjunction with the Financial Statements and the notes thereto included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2013, previously filed with the SEC.
	In the opinion of management, all adjustments (which include normal recurring adjustments) necessary to present a fair statement of the Company's consolidated financial position as of September 30, 2014, its consolidated results of operations and cash flows for the nine month periods ended September 30, 2014 and 2013, as applicable, have been made. The interim results of operations are not necessarily indicative of the operating results for the full fiscal year or any future periods.
Consolidation	'
	Consolidation
	The consolidated financial statements include the accounts of the Company and its subsidiaries. All significant inter-company accounts and transactions have been eliminated in consolidation. Non-controlling interests represent the equity interest in the GZ Highpower that is not attributable to the Company.
Use of estimates	'
	Use of estimates
	The preparation of financial statements in conformity with U.S. GAAP requires the Company to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant items subject to such estimates and assumptions include revenues; the allowance for doubtful receivables; recoverability of the carrying amount of inventory; fair values of financial instruments; and the assessment of deferred tax assets or liabilities. These estimates are often based on complex judgments and assumptions that management believes to be reasonable but are inherently uncertain and unpredictable. Actual results could differ from these estimates.
Concentrations of credit risk	'
	Concentrations of credit risk
	Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of accounts receivable. The Company extends credit based on an evaluation of the customer's financial condition, generally without requiring collateral or other security. In order to minimize the credit risk, the management of the Company has delegated a team responsible for determining credit limits, credit approvals and other monitoring procedures to ensure that follow-up action is taken to recover overdue debts. Further, the Company reviews the recoverable amount of each individual trade debt at each balance sheet date to ensure that adequate impairment losses are made for irrecoverable amounts. In this regard, the management of the Company considers that the Company's credit risk is significantly reduced.
	No customer accounted for 10% or more of total sales during nine months ended September 30, 2014. During the nine months ended September 30, 2013, there was one customer, Energizer Holdings, Inc., that accounted for 11.3% of total net sales.
	No supplier accounted for 10% or more of total purchase amount during nine months ended September 30, 2014, and one major supplier accounted for 15.0% of total purchase amount during nine months ended September 30, 2013.
	None of the Company's customers accounted for 10% or more of the accounts receivable as of September 30, 2014 and December 31, 2013.
Cash and cash equivalents	'
	Cash and cash equivalents
	Cash and cash equivalents include all cash, deposits in banks and other liquid investments with initial maturities of three months or less.
Restricted cash	'
	Restricted cash
	Restricted cash include time deposits and cash security for bank acceptance bills.
Accounts receivable	'
	Accounts receivable
	Accounts receivable are stated at the original amount less an allowance for doubtful receivables, if any, based on a review of all outstanding amounts at period end. An allowance is also made when there is objective evidence that the Company will not be able to collect all amounts due according to the original terms of the receivables. Bad debts are written off when identified. The Company extends unsecured credit to customers in the normal course of business and believes all accounts receivable in excess of the allowances for doubtful receivables to be fully collectible. The Company does not accrue interest on trade accounts receivable.
Notes receivable	'
	Notes receivable
	Notes receivable represent banks' acceptances that have been arranged with third-party financial institutions by certain customers to settle their purchases from us. These banks' acceptances are non-interest bearing and are collectible within six months.
Inventories	'
	Inventories
	Inventories are stated at lower of cost or market. Cost is determined using the weighted average method. Inventory includes raw materials, packing materials, consumables, work in progress and finished goods. The variable production overhead is allocated to each unit of production on the basis of the actual use of the production facilities. The allocation of fixed production overhead to the costs of conversion is based on the normal capacity of the production facilities.
Property, plant and equipment	'
	Property, plant and equipment
	Property, plant and equipment are stated at cost less accumulated depreciation. Cost represents the purchase price of the asset and other costs incurred to bring the asset into its existing use. Maintenance, repairs and betterments, including replacement of minor items, are charged to expense; major additions to physical properties are capitalized.
	Depreciation of property, plant and equipment is provided using the straight-line method over their estimated useful lives at the following annual rates:
	Buildings	2.5% - 10	%
	Furniture, fixtures and office equipment	20	%
	Leasehold improvement	20 - 50	%
	Machinery and equipment	10	%
	Motor vehicles	20	%
	Upon sale or disposal, the applicable amounts of asset cost and accumulated depreciation are removed from the accounts and the net amount less proceeds from disposal is charged or credited to income.
	Construction in progress represents capital expenditures for direct costs of construction or acquisition and design fees incurred, and the interest expense directly related to the construction. Capitalization of these costs ceases and the construction in progress is transferred to the appropriate category of property, plant and equipment when substantially all the activities necessary to prepare the assets for their intended use are completed. Construction in progress is not depreciated.
Land use rights, net	'
	Land use rights, net
	Land use rights represent payments for the rights to use certain parcels of land for a certain period of time in the PRC. Land use rights are carried at cost and charged to expense on a straight-line basis over the period the rights are granted.
Intangible assets	'
	Intangible assets
	Intangible assets represent a royalty-bearing, non-exclusive license to use certain patents owned by Ovonic Battery Company, Inc. (“Ovonic”), an unrelated party, to manufacture rechargeable nickel metal hydride batteries for portable consumer applications (“Consumer Batteries”) in the PRC, and a royalty-bearing, non-exclusive worldwide license to use certain patents owned by Ovonic to manufacture, sell and distribute Consumer Batteries. The value of the licenses was established based on historic acquisition costs.
	An exclusive proprietary technology contributed by the four founding management members of GZ Highpower in exchange for the paid-in capital of GZ Highpower is recorded at the four management members' historical cost basis of nil.
	Intangible assets are amortized over their estimated useful lives, and are reviewed annually for impairment, or more frequently, if indications of possible impairment exist.
Government grants	'
	Government grants
	Government grants are recognized when received and all the conditions for their receipt have been met.
	Specifically, government grants whose primary condition is that the Company should purchase, construct or otherwise acquire non-current assets is recognized on the consolidated balance sheet as deferred income and deducted in calculating the carrying amount of the related asset. The revenue from such grants is recognized in profit or loss over the life of the related depreciable asset as a reduction of depreciation expense. As of September 30, 2014 and December 31, 2013, the Company recorded deferred income of $1,635,959 and $657,521, respectively, for the government grants to purchase non-current assets.
	Government grants as compensation for expenses or losses already incurred or for the purpose of giving immediate financial support to the Company with no future related benefit are recognized as other income in the period in which they become receivable. In the nine months ended September 30, 2014 and 2013, approximately $292,197 and $345,718 of government grants were recognized as other income, respectively.
Revenue recognition	'
	Revenue recognition
	The Company recognizes revenue when persuasive evidence of an arrangement exists, the sales price is fixed or determinable, delivery of the product has occurred, title and risk of loss have transferred to the customers and collectability of the receivable is reasonably assured. The majority of domestic sales contracts transfer title and risk of loss to customers upon receipt. The majority of oversea sales contracts transfer title and risk of loss to customers when goods were delivered to the carriers. Revenue is presented net of any sales tax and value added tax.
	The Company does not have arrangements for returns from customers and does not have any future obligations directly or indirectly related to product resale by customers. The Company has no incentive programs.
Cost of Sales	'
	Cost of sales
	Cost of revenues consists primarily of material costs, employee compensation, depreciation and related expenses, which are directly attributable to the production of products. Write-down of inventories to lower of cost or market is also recorded in cost of revenues.
Shipping and handling	'
	Shipping and handling
	Shipping and handling expenses are recorded as selling expenses when occurred. Shipping and handling expenses relating to sales were $663,069 and $582,907, respectively, for the nine months ended September 30, 2014 and 2013.
Research and development	'
	Research and development
	Research and development expenses include expenses directly attributable to the conduct of research and development programs, including the expenses of salaries, employee benefits, materials, supplies, and maintenance of research equipment. All expenditures associated with research and development are expensed as incurred.
Advertising	'
	Advertising
	Advertising, which generally represents the cost of promotions to create or stimulate a positive image of the Company or a desire to buy the Company's products and services, is expensed as incurred. No significant advertising expense was recorded for the nine months ended September 30, 2014 and 2013.
Share-Based Compensation	'
	Share-based compensation
	The Company recognizes compensation expense associated with the issuance of equity instruments to employees for their services. The fair value of the equity instruments is estimated on the date of grant and is expensed in the financial statements over the vesting period. The input assumptions used in determining fair value are the expected life, expected volatility, risk-free rate and the dividend yield.
	Share-based compensation associated with the issuance of equity instruments to nonemployees is measured with the fair value of the equity instrument issued or committed to be issued, as this is more reliable than the fair value of the services received. The fair value is measured at the date that the commitment for performance by the counterparty has been reached or the counterparty's performance is complete.
Income taxes	'
	Income taxes
	The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements or tax returns. Under this method, deferred income taxes are recognized for the tax consequences in future years of differences between the tax bases of assets and liabilities and their financial reporting amounts at each period end based on enacted tax laws and statutory tax rates applicable to the periods in which the differences are expected to affect taxable income. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount expected to be realized.
Uncertain tax positions	'
	Uncertain tax positions
	The Company accounts for uncertainty in income taxes using a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon settlement. The Company classifies the liability for unrecognized tax benefits as current to the extent that the Company anticipates payment (or receipt) of cash within one year. Interest and penalties related to uncertain tax positions are recognized and recorded as necessary in the provision for income taxes. There were no uncertain tax positions as of September 30, 2014 and December 31, 2013.
Comprehensive income	'
	Comprehensive income
	Recognized revenue, expenses, gains and losses are included in net income or loss. Although certain changes in assets and liabilities are reported as separate components of the equity section of the consolidated balance sheet, such items, along with net income, are components of comprehensive income or loss. The components of other comprehensive income or loss are consisted solely of foreign currency translation adjustments, net of the income tax effect.
Foreign currency translation and transactions	'
	Foreign currency translation and transactions
	Highpower's functional currency is the United States dollar ("US$"). HKHTC's functional currency is the Hong Kong dollar ("HK$"). The functional currency of the Company's subsidiaries in the PRC is the Renminbi ("RMB").
	Most of the Company's oversea sales are priced and settled with US$. At the date a foreign currency transaction is recognized, each asset, liability, revenue, expense, gain, or loss arising from the transaction is measured initially in the functional currency of the recording entity by use of the exchange rate in effect at that date. The increase or decrease in expected functional currency cash flows upon settlement of a transaction resulting from a change in exchange rates between the functional currency and the currency in which the transaction is denominated is recognized as foreign currency transaction gain or loss that is included in determining net income for the period in which the exchange rate changes. At each balance sheet date, recorded balances that are denominated in a foreign currency are adjusted to reflect the current exchange rate.
	The Company's reporting currency is US$. Assets and liabilities of HKHTC and the PRC subsidiaries are translated at the current exchange rate at the balance sheet dates, revenues and expenses are translated at the average exchange rates during the reporting periods, and equity accounts are translated at historical rates. Translation adjustments are reported in other comprehensive income.
Segment Reporting	'
	Segment Reporting
	The Company uses the “management approach” in determining reportable operating segments. The management approach considers the internal organization and reporting used by the Company's chief operating decision maker for making operating decisions and assessing performance as the source for determining the Company's reportable segments. The Company's reportable segments are based on products, geography, legal structure, management structure, or any other manner in which management disaggregates a company. Therefore the Company categorizes its business into three reportable segments, namely (i) Ni-MH Batteries; (ii) Lithium Batteries; and (iii) New Materials.
Fair value of financial instruments	'
	Fair value of financial instruments
	The carrying values of the Company's financial instruments, including cash and cash equivalents, restricted cash, trade and other receivables, deposits, trade and other payables, and bank borrowings, approximate their fair values due to the short-term maturity of such instruments.
	The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and it considers assumptions that market participants would use when pricing the asset or liability.
	The Company establishes a fair value hierarchy that requires maximizing the use of observable inputs and minimizing the use of unobservable inputs when measuring fair value. A financial instrument's categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
	The Company measures fair value using three levels of inputs that may be used to measure fair value:
	-Level 1 applies to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities.
	-Level 2 applies to assets or liabilities for which there are inputs other than quoted prices included within Level 1 that are observable for the asset or liability such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical assets or liabilities in markets with insufficient volume or infrequent transactions (less active markets); or model-derived valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data.
	-Level 3 applies to assets or liabilities for which there are unobservable inputs to the valuation methodology that are significant to the measurement of the fair value of the assets or liabilities.
Warrant Liabilities	'
	Warrant Liabilities
	For warrants that are not indexed to the Company's stock, the Company records the fair value of the issued warrants as a liability at each balance sheet date and records changes in the estimated fair value as a non-cash gain or loss in the consolidated statement of operations and comprehensive loss. The fair values of these warrants have been determined using the Black-Scholes pricing model. The Black-Scholes pricing model provides for assumptions regarding volatility, call and put features and risk-free interest rates within the total period to maturity. These values are subject to a significant degree of judgment on the part of the Company.
Derivatives	'
	Derivatives
	From time to time the Company may utilize foreign currency forward contracts to reduce the impact of foreign currency exchange rate risk. Management considered that the foreign currency forwards did not meet the criteria for designated hedging instruments and hedged transactions to qualify for cash flow hedge or fair value hedge accounting. The currency forwards therefore are accounted for as derivatives, with fair value changes reported as gain (loss) of derivative instruments in the income statement.
Earnings per share	'
	Earnings per share
	Basic earnings per share (“EPS”) is computed by dividing income attributable to holders of common shares by the weighted average number of common shares outstanding during the year. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common shares were exercised or converted into common shares. Potential dilutive securities are excluded from the calculation of diluted EPS in loss periods as their effect would be anti-dilutive.
Recently issued accounting pronouncements	'
	Recently issued accounting pronouncements
	As of November 12, 2014, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2013-01 up to ASU No. 2014-16, which are not expected to have a material impact on the consolidated financial statements upon adoption.

Principal_activities_and_organ

Principal activities and organization (Tables)	9 Months Ended
	Sep. 30, 2014
Organization and basis of presentation [Abstract]	'
Subsidiaries and Principle Activities	'
	The subsidiaries of the Company and their principal activities are described as follows:
	Name of company	Place and date	Attributable equity			Principal
		incorporation	interest held			activities
	Hong Kong Highpower Technology Co., Ltd	Hong Kong		100	%	Investment holding
	("HKHTC")	4-Jul-03
	Shenzhen Highpower Technology Co., Ltd	PRC		100	%	Manufacturing & marketing of batteries
	("SZ Highpower")	8-Oct-02
	Highpower Energy Technology (Huizhou) Co., Ltd	PRC		100	%	Inactive
	("HZ Highpower")	29-Jan-08
	Springpower Technology (Shenzhen) Co., Ltd	PRC		100	%	Research & manufacturing of batteries
	("SZ Springpower")	4-Jun-08
	Ganzhou Highpower Technology Co., Ltd	PRC		60	%	Processing, marketing and research of battery materials
	("GZ Highpower")	21-Sep-10
	Icon Energy System Co., Ltd.	PRC		100	%	Research and production of advanced battery packs and systems
	("ICON")	23-Feb-11
	Huizhou Highpower Technology Co., Ltd	PRC		100	%	Manufacturing & marketing of batteries
	("HZ HTC")	8-Mar-12

Summary_of_significant_account2

Summary of significant accounting policies (Tables)	9 Months Ended
	Sep. 30, 2014
Summary of significant accounting policies [Abstract]	'
Schedule of Depreciation Rate of Plant and Equipment	'
	Depreciation of property, plant and equipment is provided using the straight-line method over their estimated useful lives at the following annual rates:
	Buildings	2.5% - 10	%
	Furniture, fixtures and office equipment	20	%
	Leasehold improvement	20 - 50	%
	Machinery and equipment	10	%
	Motor vehicles	20	%

Restricted_cash_Tables

Restricted cash (Tables)	9 Months Ended
	Sep. 30, 2014
Restricted cash [Abstract]	'
Summary of Restricted Cash Held by Company	'
	As of September 30, 2014 and December 31, 2013, restricted cash consisted of the following:
		September 30,		December 31,
		2014		2013
		(Unaudited)
		$		$
	Securities for bank acceptance bill		13,113,711		14,132,921
	Time deposits		2,353,927		14,453,200
			15,467,638		28,586,121

Accounts_receivable_net_Tables

Accounts receivable, net (Tables)	9 Months Ended
	Sep. 30, 2014
Accounts receivable, net [Abstract]	'
Schedule of Accounts Receivable	'
	As of September 30, 2014 and December 31, 2013, accounts receivable consisted of the following:
		September 30,		December 31,
		2014		2013
		(Unaudited)
		$		$
	Accounts receivable		40,604,434		36,467,233
	Less: allowance for doubtful debts		2,497,016		2,506,219
			38,107,418		33,961,014

Prepayments_Tables

Prepayments (Tables)	9 Months Ended
	Sep. 30, 2014
Prepayments [Abstract]	'
Schedule of Prepayments	'
		September 30,		December 31,
		2014		2013
		(Unaudited)
		$		$
	Purchase deposits paid		2,303,820		2,876,267
	Value-added tax prepayment		1,094,804		1,032,619
	Deferred share-based compensation		-		131,812
	Rental deposit		265,543		209,095
	Deferred insurance fee		72,752		53,297
	Advances to staff for operations		138,425		48,499
	Other deposits and prepayments		607,631		618,154
			4,482,975		4,969,743

Other_receivables_Tables

Other receivables (Tables)	9 Months Ended
	Sep. 30, 2014
Other receivables [Abstract]	'
Schedule of Other Receivables	'
		September 30,		December 31,
		2014		2013
		(Unaudited)
		$		$
	Deposit for land use right		514,361		518,603
	Others		201,189		545,053
			715,550		1,063,656

Inventories_Tables

Inventories (Tables)	9 Months Ended
	Sep. 30, 2014
Inventories [Abstract]	'
Schedule of Inventories	'
		September 30,		December 31,
		2014		2013
		(Unaudited)
		$		$
	Raw materials		4,799,204		4,281,232
	Work in progress		2,516,244		2,047,627
	Finished goods		12,864,660		13,087,995
	Packing materials		25,647		20,591
	Consumables		361,444		301,915
			20,567,199		19,739,360

Property_plant_and_equipment_n1

Property, plant and equipment, net (Tables)	9 Months Ended
	Sep. 30, 2014
Property, plant and equipment, net [Abstract]	'
Schedule of Plant and Equipment, Net	'
		September 30,		December 31,
		2014		2013
		(Unaudited)
		$		$
	Cost
	Construction in progress		2,583,000		6,681,652
	Furniture, fixtures and office equipment		3,691,244		3,282,818
	Leasehold improvement		2,044,879		940,089
	Machinery and equipment		26,119,952		24,600,773
	Motor vehicles		1,339,782		1,430,611
	Building		25,541,312		21,521,416
			61,320,169		58,457,359
	Less: accumulated depreciation		11,936,636		9,909,156
			49,383,533		48,548,203

Land_use_rights_net_Tables

Land use rights, net (Tables) (Land Use Right [Member])	9 Months Ended
	Sep. 30, 2014
Land Use Right [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Schedule of Land Use Rights	'
			September 30,			December 31,
			2014			2013
			(Unaudited)
				$			$
	Cost
	Land located in Huizhou			3,491,953			3,520,752
	Land located in Ganzhou			1,362,280			1,373,515
				4,854,233			4,894,267
	Accumulated amortization			(541,798	)		(472,852	)
	Net			4,312,435			4,421,415
Schedule of Estimated Amortization Expenses	'
	Land use rights are being amortized annually using the straight-line method over a contract term of 50 years. Estimated amortization for the coming years is as follows:
		$
	Remaining 2014		24,222
	2015		97,087
	2016		97,087
	2017		97,087
	2018		97,087
	2019		97,087
	2020 and thereafter		3,802,778
			4,312,435

Intangible_assets_net_Tables

Intangible assets, net (Tables) (Other Intangible Assets [Member])	9 Months Ended
	Sep. 30, 2014
Other Intangible Assets [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Schedule of Intangible Assets	'
		September 30,			December 31,
		2014			2013
		(Unaudited)
			$			$
	Cost
	Consumer battery license fee		1,000,000			1,000,000
	Accumulated amortization		(387,500	)		(350,000	)
	Net		612,500			650,000

Other_payables_and_accrued_lia1

Other payables and accrued liabilities (Tables)	9 Months Ended
	Sep. 30, 2014
Other payables and accrued liabilities [Abstract]	'
Schedule of Other Payables and Accrued Liabilities	'
		September 30,		December 31,
		2014		2013
		(Unaudited)
		$		$
	Accrued expenses		4,100,994		3,877,095
	Royalty payable		577,721		582,486
	VAT payable		588,864		1,406,086
	Sales deposits received		1,216,310		1,574,258
	Other payables		336,010		361,506
			6,819,899		7,801,431

Taxation_Tables

Taxation (Tables)	9 Months Ended
	Sep. 30, 2014
Taxation [Abstract]	'
Components of Provision for Income Taxes Benefit	'
	The components of the provision for income taxes expenses are:
		Three months ended						Nine months ended
		September 30,						September 30,
		2014			2013			2014			2013
		(Unaudited)			(Unaudited)			(Unaudited)			(Unaudited)
			$			$			$			$
	Current		720,932			311,110			1,459,285			656,165
	Deferred		(281,273	)		60,913			(830,413	)		(76,813	)
	Total		439,659			372,023			628,872			579,352
Reconciliation of Income Taxes Benefit (Loss) Computed at Statutory Tax Rate to Income Tax Expenses	'
	The reconciliation of income tax expense computed at the statutory tax rate applicable to the Company to income tax expense is as follows:
		Three months ended						Nine months ended
		September 30,						September 30,
		2014			2013			2014			2013
		(Unaudited)			(Unaudited)			(Unaudited)			(Unaudited)
			$			$			$			$
	Income before tax		1,245,803			1,080,808			1,250,800			717,057
	Provision for income taxes at applicable income tax rate		154,019			271,265			73,150			168,845
	Effect of preferential tax rate		(332,606	)		(32,272	)		(546,529	)		11,698
	R&D expenses eligible for super deduction		74			-			(71,531	)		-
	Non-deductible expenses		43,591			22,092			124,082			65,791
	Change in valuation allowance		574,581			110,938			1,049,700			333,018
	Effective enterprise income tax		439,659			372,023			628,872			579,352
Schedule of Deferred Tax Assets	'
	Deferred tax assets and deferred tax liabilities reflect the tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purpose and the tax bases used for income tax purpose. The following represents the tax effect of each major type of temporary difference.
		September 30,			December 31,
		2014			2013
		(Unaudited)
			$			$
	Tax loss carry-forward		4,080,648			2,601,823
	Allowance for doubtful receivables		111,109			112,446
	Allowance for inventory obsolescence		191,410			46,441
	Fair value change of currency forwards		746			(9,493	)
	Difference for sales cut-off		47,068			46,824
	Deferred income		245,394			168,880
	Property, plant and equipment subsidized by government grant		164,358			-
	Total gross deferred tax assets		4,840,733			2,966,921
	Valuation allowance		(3,214,287	)		(2,164,696	)
	Total net deferred tax assets		1,626,446			802,225

Shortterm_loans_Tables

Short-term loans (Tables)	9 Months Ended
	Sep. 30, 2014
Short-term loans [Abstract]	'
Schedule of Short-Term Loans	'
		September 30,		December 31,
		2014		2013
		(Unaudited)
		$		$
	Short- term bank loans guaranteed and repayable within one year		15,817,971		36,142,105

Line_of_credit_Tables

Line of credit (Tables)	9 Months Ended
	Sep. 30, 2014
Line of credit [Abstract]	'
Schedule of Lines of Credit	'
	The Company entered into various credit contracts and revolving lines of credit, which were used for short-term loans and bank acceptance bills. The following tables summarize the unused lines of credit as of September 30, 2014 and December 31, 2013:
		September 30, 2014 (Unaudited)
	Lender	Starting date	Maturity date		Line of credit			Unused line of credit
						$			$
	Bank of China	3/10/14	3/10/15			12,603,060			285,381
	Bank of China	7/23/14	7/23/15			3,949,346			67,247
	Industrial and Commercial Bank of China	7/26/12	7/25/15			6,504,805			5,041,224
	The Shanghai Cmmercial&saving	8/19/14	11/19/14			4,500,000			4,500,000
	China Minsheng Banking Corp.,Ltd	5/22/14	5/21/15			3,252,403			3,252,403
	China Citic  Bank	6/25/14	6/25/15			8,014,850			6,104,063
	Total					38,824,464			19,250,318
		31-Dec-13
	Lender	Starting date	Maturity date	Line of credit			Unused line of credit
					$			$
	Industrial and Commercial Bank of China	7/26/12	7/25/2015(ii)		6,558,452			1,803,574
	China Citic Bank	3/29/13	3/29/2014(ii)		7,378,259			5,738,646
	Bank of China	1/25/13	1/25/2014(i)		3,689,129			247,582
	Bank of China	1/10/13	1/10/2014(ii)		12,707,001			1,674,876
	China Everbright Bank	5/30/13	5/29/2014(i)		8,438,433			1,382,194
	China Everbright Bank	9/4/13	9/3/2014(i)		1,147,729			-
	Industrial Bank Co., Ltd	7/24/13	7/24/2014(i)		8,198,065			6,558,452
	Jiang Su Bank Co., Ltd	6/21/13	6/20/2014(i)		4,918,839			-
	Ping An Bank	11/12/13	9/17/2014(i)		11,477,291			7,564,027
	Shanghai Commercial & Saving Bank	8/29/13	8/29/2014(i)		3,000,000			1,250,000
	Industrial and Commercial Bank of China(Macau) Ltd	7/29/13	1/29/2014(i)		7,093,296			3,084,294
	Total				74,606,494			29,303,645
	(i) The lines of credit from these banks are terminated at maturity dates.
	(ii) The lines of credit from these banks are rolled over after maturity dates.

Longterm_loans_Tables

Long-term loans (Tables)	9 Months Ended
	Sep. 30, 2014
Long-term loans [Abstract]	'
Schedule of Long-Term Debt	'
			30-Sep-14		December 31, 2013
			(Unaudited)
				$		$
	Long term loans from Bank of China			4,390,744		5,902,607
	Less: current portion of long-term borrowings			1,951,442		1,967,536
	Long- term bank loans, net of current portion			2,439,302		3,935,071
Schedule of Maturities of Long-Term Loans	'
	The principal is to be repaid quarterly from September 30, 2012. 2% of the principal was repaid on each of September 30, 2012 and December 30, 2012, respectively. Thereafter 6% of the principal is to be repaid every quarter after December 31, 2012 until the maturity date. The repayment schedule of the principal is summarized as in below table:
		$
	Remaining 2014		487,860
	2015		1,951,442
	2016		1,951,442
			4,390,744

Sharebased_compensation_Tables

Share-based compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Schedule of Share-Based Compensation	'
	Options Granted to Employees
		Number of			Weighted		Remaining
		Shares			Average		Contractual
					Exercise Price		Term in Years
					$
	Outstanding, January 1, 2013		665,000			2.81		8.35
	Granted		540,000			2.63		-
	Exercised		-			-		-
	Forfeited		(100,000	)		1.15		-
	Canceled		-			-		-
	Outstanding, December 31, 2013		1,105,000			2.87		8.51
	Exercisable, December 31, 2013		380,000			3.14		7.19
	Vested and expected to vest, December 31, 2013		940,022			2.9		8.33
		Number of			Weighted		Remaining
		Shares			Average		Contractual
					Exercise Price		Term in Years
					$
	Outstanding, January 1, 2014		1,105,000			2.87		8.51
	Granted		-			-		-
	Exercised		(160,000	)		2.69		-
	Forfeited		(29,204	)		2.63		-
	Canceled		-			-		-
	Outstanding, September 30, 2014		915,796			2.91		7.23
	Exercisable, September 30, 2014		265,000			3.45		3.96
	Vested and expected to vest, September 30, 2014		837,760			2.93		7.08
Schedule of Fair Value of Options Granted, Weighted-Average Assumptions	'
	Also, in connection with this consulting agreement, on January 17, 2014 the Company issued five year warrants to purchase 200,000 shares of the Company's common stock. The shares were fully vested upon issuance and the aggregate fair value of the warrants was approximately $390,000, which was calculated using the Black-Scholes pricing model, with the following weighted-average assumptions:
		Nine Months Ended
		September 30,
		2014			2013
	Expected volatility		83.6	%		-
	Risk-free interest rate		1.64	%		-
	Expected term from grant date (in years)		5			-
	Dividend rate		-			-
	Fair value		1.95			-
Schedule of Restricted Stock and RSA Award Activities	'
	The following table summarizes the restricted stock awards activities for the nine months ended September 30, 2014:
		Number			Weighted		Remaining
		of Shares			Average		Contractual
					Exercise		Term in Years
					Price
					$
	Outstanding, January 1, 2014		172,200			2.81		1.77
	Granted		-			-
	Exercised		-			-
	Forfeited		-			-
	Outstanding, September 30, 2014		172,200			2.81		1.02
	Expected to vest, September 30, 2014		137,601			2.81		1.02

Earnings_per_share_Tables

Earnings per share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings per share [Abstract]	'
Computation of Basic and Diluted Earnings Per Common Share	'
	The following table sets forth the computation of basic and diluted earnings per common share for the nine months ended September 30, 2014 and 2013, and the three months ended September 30, 2014 and 2013.
		Three months ended				Nine months ended
		September 30,				September 30,
		2014		2013		2014		2013
		(Unaudited)		(Unaudited)		(Unaudited)		(Unaudited)
			$		$		$		$
	Numerator:
	Net income attributable to the Company		874,167		742,228		751,516		242,637
	Denominator:
	Weighted-average shares outstanding
	- Basic		15,052,158		13,657,930		14,632,491		13,607,474
	- Diluted		15,590,142		13,657,930		15,045,776		13,607,474
	Earnings per common share
	- Basic		0.06		0.05		0.05		0.02
	- Diluted		0.06		0.05		0.05		0.02

Securities_Offering_Transactio1

Securities Offering Transaction (Tables)	9 Months Ended
	Sep. 30, 2014
Securities Offering Transaction [Abstract]	'
Schedule of Fair Values of Warrants	'
	The fair values of the warrants as of September 30, 2014 were calculated using the Black-Scholes pricing model with the following assumptions:
		Nine months Ended
		September 30,
		2014			2013
	Expected volatility		93.79	%		NA
	Risk-free interest rate		0.8	%		NA
	Expected term (in years)		2.6			NA
	Dividend rate		-			NA
	Fair value	$	4.8			NA
		17-Apr-14
		2014			2013
	Expected volatility		85.76	%		NA
	Risk-free interest rate		0.9	%		NA
	Expected term (in years)		3			NA
	Dividend rate		-			NA
	Fair value	$	2.3			NA

Commitments_and_contingencies_

Commitments and contingencies (Tables)	9 Months Ended
	Sep. 30, 2014
Commitments and contingencies [Abstract]	'
Schedule of Minimum Future Commitments for Operating Leases	'
	Minimum future commitments under these agreements as of September 30, 2014 are as follows:
		$
	Remaining 2014		401,347
	2015		1,480,887
	2016		1,338,853
	2017		333,989
			3,555,076

Segment_information_Tables

Segment information (Tables)	9 Months Ended
	Sep. 30, 2014
Segment information [Abstract]	'
Schedule of Information by Segments	'
	The CODM evaluates performance based on each reporting segment's net sales, cost of sales, gross profit and total assets. Net sales, cost of sales, gross profit and total assets by segments is set out as follows:
		Three months ended September 30,							Nine months ended September 30,
		2014			2013				2014		2013
		(Unaudited)			(Unaudited)				(Unaudited)		(Unaudited)
		$			$				$		$
	Net sales
	Ni-MH Batteries		22,468,264			23,278,902				57,109,202		56,195,672
	Lithium Batteries		21,069,435			14,960,966				51,971,642		36,541,465
	New Materials		936,861			613,110				2,688,666		1,692,829
	Total		44,474,560			38,852,978				111,769,510		94,429,966
	Cost of Sales
	Ni-MH Batteries		17,843,761			19,220,485				45,357,950		45,491,987
	Lithium Batteries		16,355,265			11,859,111				40,935,690		29,664,911
	New Materials		870,414			530,395				2,410,314		1,532,442
	Total		35,069,440			31,609,991				88,703,954		76,689,340
	Gross Profit
	Ni-MH Batteries		4,624,503			4,058,417				11,751,252		10,703,685
	Lithium Batteries		4,714,170			3,101,855				11,035,952		6,876,554
	New Materials		66,447			82,715				278,352		160,387
	Total		9,405,120			7,242,987				23,065,556		17,740,626
			September 30,2014					December 31, 2013
				(Unaudited)
				$					$
	Total Assets
	Ni-MH Batteries			52,909,634					66,960,366
	Lithium Batteries			87,904,413					76,357,912
	New Materials			8,724,638					8,475,098
	Total			149,538,685					151,793,376
Schedule of Geographic Information about Revenues	'
	All long-lived assets of the Company are located in the PRC. Geographic information about the sales and accounts receivable based on the location of the Company's customers is set out as follows:
		Three months ended September 30,							Nine months ended September 30,
		2014			2013				2014		2013
		(Unaudited)			(Unaudited)				(Unaudited)		(Unaudited)
		$			$				$		$
	Net sales
	China (including Hong Kong)		27,698,729			25,308,214				72,064,966		52,936,205
	Asia, others		3,979,662			3,975,389				8,304,209		11,084,009
	Europe		10,465,002			6,999,347				23,908,064		22,466,996
	North America		2,128,707			2,406,305				6,725,849		7,181,805
	South America		116,227			90,849				317,928		382,215
	Africa		43,872			28,877				281,016		248,275
	Others		42,361			43,997				167,478		130,461
			44,474,560			38,852,978				111,769,510		94,429,966
Schedule of Geographic Information about Accounts Receivable	'
			30-Sep-14				December 31, 2013
				(Unaudited)
				$				$
	Accounts receivable
	China (including Hong Kong)			26,077,073				24,554,617
	Asia, others			2,564,187				3,278,001
	Europe			8,610,537				5,191,444
	North America			776,601				863,156
	South America			38,465				50,691
	Africa			22,500				25
	Others			18,055				23,080
				38,107,418				33,961,014

Organization_and_basis_of_pres1

Organization and basis of presentation (Narrative) (Details)	1 Months Ended	9 Months Ended
	Apr. 30, 2014	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014	Dec. 31, 2013	15-May-13	15-May-13	Dec. 31, 2012	Dec. 31, 2012
	USD ($)	USD ($)	USD ($)	USD ($)	Ganzhou Highpower Technology Co., Ltd ("GZ Highpower") [Member]	Ganzhou Highpower Technology Co., Ltd ("GZ Highpower") [Member]	Ganzhou Highpower Technology Co., Ltd ("GZ Highpower") [Member]	Ganzhou Highpower Technology Co., Ltd ("GZ Highpower") [Member]	Ganzhou Highpower Technology Co., Ltd ("GZ Highpower") [Member]	Ganzhou Highpower Technology Co., Ltd ("GZ Highpower") [Member]
							USD ($)	CNY	USD ($)	CNY
Subsidiary or Equity Method Investee [Line Items]	'	'	'	'	'	'	'	'	'	'
Attributable equity interest held	'	'	'	'	60.00%	60.00%	'	'	'	'
Equity interest held by partner	'	'	'	'	40.00%	40.00%	'	'	'	'
Additional paid-in capital	'	$10,403,566	'	$6,011,305	'	'	$4,807,847	30,000,000	$2,381,293	15,000,000
Class of Stock [Line Items]	'	'	'	'	'	'	'	'	'	'
Shares issued to investors	1,000,000	'	'	'	'	'	'	'	'	'
Number of shares covered by warrants	500,000	'	'	'	'	'	'	'	'	'
Shares issued, price per share	$5.05	'	'	'	'	'	'	'	'	'
Aggregate proceeds	5,050,000	'	'	'	'	'	'	'	'	'
Shares covered by each warrant	0.5	'	'	'	'	'	'	'	'	'
Proceeds from issuance of capital stock, net	$4,633,164	$4,633,164	'	'	'	'	'	'	'	'

Organization_and_basis_of_pres2

Organization and basis of presentation (Schedule of Subsidiaries and Principle Activities) (Details)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Hong Kong Highpower Technology Co., Ltd ("HKHTC") [Member]	'	'
Subsidiary or Equity Method Investee [Line Items]	'	'
Date of incorporation	4-Jul-03	'
Attributable equity interest held	100.00%	'
Shenzhen Highpower Technology Co., Ltd ("SZ Highpower") [Member]	'	'
Subsidiary or Equity Method Investee [Line Items]	'	'
Date of incorporation	8-Oct-02	'
Attributable equity interest held	100.00%	'
Highpower Energy Technology (Huizhou) Co., Ltd ("HZ Highpower") [Member]	'	'
Subsidiary or Equity Method Investee [Line Items]	'	'
Date of incorporation	29-Jan-08	'
Attributable equity interest held	100.00%	'
Springpower Technology (Shenzhen) Co., Ltd ("SZ Springpower") [Member]	'	'
Subsidiary or Equity Method Investee [Line Items]	'	'
Date of incorporation	4-Jun-08	'
Attributable equity interest held	100.00%	'
Ganzhou Highpower Technology Co., Ltd ("GZ Highpower") [Member]	'	'
Subsidiary or Equity Method Investee [Line Items]	'	'
Date of incorporation	21-Sep-10	'
Attributable equity interest held	60.00%	60.00%
Icon Energy System Co., Ltd. ("ICON") [Member]	'	'
Subsidiary or Equity Method Investee [Line Items]	'	'
Date of incorporation	23-Feb-11	'
Attributable equity interest held	100.00%	'
Huizhou Highpower Technology Co., Ltd ("HZ HTC") [Member]	'	'
Subsidiary or Equity Method Investee [Line Items]	'	'
Date of incorporation	8-Mar-12	'
Attributable equity interest held	100.00%	'

Summary_of_significant_account3

Summary of significant accounting policies (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
	segments
Deferred Revenue	'	'	'
Deferred income	$1,635,959	'	$675,521
Government grants recognized as other income	292,197	345,718	'
Shipping and handling	'	'	'
Shipping and handling expenses	$663,069	$582,907	'
Segment Reporting	'	'	'
Number of reportable segments	3	'	'
Sales [Member] | Customer One [Member]	'	'	'
Concentrations of credit risk	'	'	'
Concentration risk, percentage	'	11.30%	'
Cost of Goods, Total [Member] | Supplier One [Member]	'	'	'
Concentrations of credit risk	'	'	'
Concentration risk, percentage	'	15.00%	'

Summary_of_significant_account4

Summary of significant accounting policies (Schedule of Depreciation Rates of Plant and Equipment) (Details)	9 Months Ended
	Sep. 30, 2014
Buildings [Member] | Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Depreciation rate	2.50%
Buildings [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Depreciation rate	10.00%
Furniture, Fixtures and Office Equipment [Member]	'
Property, Plant and Equipment [Line Items]	'
Depreciation rate	20.00%
Leasehold Improvement [Member] | Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Depreciation rate	20.00%
Leasehold Improvement [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Depreciation rate	50.00%
Machinery and Equipment [Member]	'
Property, Plant and Equipment [Line Items]	'
Depreciation rate	10.00%
Motor Vehicles [Member]	'
Property, Plant and Equipment [Line Items]	'
Depreciation rate	20.00%

Restricted_cash_Details

Restricted cash (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Restricted Cash and Cash Equivalents Items [Line Items]	'	'
Restricted cash	$15,467,638	$28,586,121
Securities for Bank Acceptance Bill [Member]	'	'
Restricted Cash and Cash Equivalents Items [Line Items]	'	'
Restricted cash	13,113,711	14,132,921
Time Deposit [Member]	'	'
Restricted Cash and Cash Equivalents Items [Line Items]	'	'
Restricted cash	$2,353,927	$14,453,200

Accounts_receivable_net_Schedu

Accounts receivable, net (Schedule of Accounts Receivable) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Accounts receivable, net [Abstract]	'	'
Accounts receivable	$40,604,434	$36,467,233
Less: allowance for doubtful debts	2,497,016	2,506,219
Accounts receivable, net	$38,107,418	$33,961,014

Accounts_receivable_net_Narrat

Accounts receivable, net (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Accounts receivable, net [Abstract]	'	'
Allowance for doubtful accounts	$103	($3,643)
Accounts receivable written off	$2,948	$1,713

Prepayments_Details

Prepayments (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Prepayments [Abstract]	'	'
Purchase deposits paid	$2,303,820	$2,876,267
Value-added tax prepayment	1,094,804	1,032,619
Deferred share-based compensation	'	131,812
Rental deposit	265,543	209,095
Deferred insurance fee	72,752	53,297
Advances to staff for operations	138,425	48,499
Other deposits and prepayments	607,631	618,154
Total prepayments	$4,482,975	$4,969,743

Other_receivables_Details

Other receivables (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Other receivables [Abstract]	'	'
Deposit for land use right	$514,361	$518,603
Others	201,189	545,053
Total Other receivables	$715,550	$1,063,656

Inventories_Details

Inventories (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Inventories [Abstract]	'	'	'
Raw materials	$4,799,204	'	$4,281,232
Work in progress	2,516,244	'	2,047,627
Finished goods	12,864,660	'	13,087,995
Packing materials	25,647	'	20,591
Consumables	361,444	'	301,915
Inventories	20,567,199	'	19,739,360
Write down for inventories	$747,340	$138,213	'

Property_plant_and_equipment_n2

Property, plant and equipment, net (Schedule of Plant and Equipment) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Cost	'	'
Construction in progress	$2,583,000	$6,681,652
Furniture, fixtures and office equipment	3,691,244	3,282,818
Leasehold improvement	2,044,879	940,089
Machinery and equipment	26,119,952	24,600,773
Motor vehicles	1,339,782	1,430,611
Building	25,541,312	21,521,416
Property, plant and equipment, cost	61,320,169	58,457,359
Less: accumulated depreciation	11,936,636	9,909,156
Property, plant and equipment, net	$49,383,533	$48,548,203

Property_plant_and_equipment_n3

Property, plant and equipment, net (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Property, plant and equipment, net [Abstract]	'	'	'	'	'
Depreciation expenses	$1,071,176	$621,589	$3,051,069	$1,722,992	'
Property, plant and equipment pledged as collateral	10,595,293	'	10,595,293	'	10,867,411
Deduction of deferred revenue from property, plant and equipment	'	'	($669,995)	'	'

Land_use_rights_net_Schedule_o

Land use rights, net (Schedule of Land Use Rights) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]	'	'
Net	$4,312,435	$4,421,415
Land Use Right [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Cost	4,854,233	4,894,267
Accumulated amortization	-541,798	-472,852
Net	4,312,435	4,421,415
Lease terms of land use rights	'50 years	'
Land Use Right, Land Located in Huizhou [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Cost	3,491,953	3,520,752
Area of land	126,605	'
Land rights expiry date	23-May-57	'
Land Use Right Land, Located in Ganzhou [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Cost	$1,362,280	$1,373,515
Area of land	58,669	'
Land rights expiry date	4-Jan-62	'

Land_use_rights_net_Amortizati

Land use rights, net (Amortization Disclosures) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Estimated amortization for the coming years is as follows	'	'	'	'	'
Net	$4,312,435	'	$4,312,435	'	$4,421,415
Land Use Right [Member]	'	'	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Amortization expenses	24,222	24,214	72,815	72,104	'
Estimated amortization for the coming years is as follows	'	'	'	'	'
Remaining 2014	24,222	'	24,222	'	'
2015	97,087	'	97,087	'	'
2016	97,087	'	97,087	'	'
2017	97,087	'	97,087	'	'
2018	97,087	'	97,087	'	'
2019	97,087	'	97,087	'	'
2020 and thereafter	3,802,778	'	3,802,778	'	'
Net	$4,312,435	'	$4,312,435	'	$4,421,415

Intangible_asset_Details

Intangible asset (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Intangible asset, net	$612,500	'	$612,500	'	$650,000
Consumer Battery License Fee [Member]	'	'	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Cost	1,000,000	'	1,000,000	'	1,000,000
Accumulated amortization	-387,500	'	-387,500	'	-350,000
Intangible asset, net	612,500	'	612,500	'	650,000
Consumer battery license agreement period	'	'	'20 years	'	'
Amortization expenses	12,500	12,500	37,500	37,500	'
Proprietary Technology [Member]	'	'	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Cost	$0	'	$0	'	'

Other_payables_and_accrued_lia2

Other payables and accrued liabilities (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Other payables and accrued liabilities [Abstract]	'	'
Accrued expenses	$4,100,994	$3,877,095
Royalty payable	577,721	582,486
VAT payable	588,864	1,406,086
Sales deposits received	1,216,310	1,574,258
Other payables	336,010	361,506
Other payables and accrued liabilities	$6,819,899	$7,801,431

Taxation_Components_of_Provisi

Taxation (Components of Provision for Income Taxes Benefit) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Taxation [Abstract]	'	'	'	'
Current	$720,932	$311,110	$1,459,285	$656,165
Deferred	-281,273	60,913	-830,413	-76,813
Effective enterprise income tax	$439,659	$372,023	$628,872	$579,352

Taxation_Reconciliation_of_Inc

Taxation (Reconciliation of Income Taxes Benefit (Loss) Computed at Statutory Tax Rate to Income Tax Expenses) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Taxation [Abstract]	'	'	'	'
Income before tax	$1,245,803	$1,080,808	$1,250,800	$717,057
Provision for income taxes at applicable income tax rate	154,019	271,265	73,150	168,845
Effect of preferential tax rate	-332,606	-32,272	-546,529	11,698
R&D expenses eligible for super deduction	74	'	-71,531	'
Non-deductible expenses	43,591	22,092	124,082	65,791
Change in valuation allowance	574,581	110,938	1,049,700	333,018
Effective enterprise income tax	$439,659	$372,023	$628,872	$579,352

Taxation_Schedule_of_Tax_Effec

Taxation (Schedule of Tax Effect of Each Major Type of Temporary Difference) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Taxation [Abstract]	'	'
Tax loss carry-forward	$4,080,648	$2,601,823
Allowance for doubtful receivables	111,109	112,446
Allowance for inventory obsolescence	191,410	46,441
Fair value change of currency forwards	746	-9,493
Difference for sales cut-off	47,068	46,824
Deferred income	245,394	168,880
Property, plant and equipment subsidized by government grant	164,358	'
Total gross deferred tax assets	4,840,733	2,966,921
Valuation allowance	-3,214,287	-2,164,696
Total net deferred tax assets	$1,626,446	$802,225

Notes_payable_Details

Notes payable (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Notes payable [Abstract]	'	'
Outstanding notes payable	$27,002,824	$25,271,256

Shortterm_loans_Details

Short-term loans (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Short-term Debt [Line Items]	'	'	'	'	'
Short- term bank loans guaranteed and repayable within one year	$15,817,971	'	$15,817,971	'	$36,142,105
Property, plant and equipment pledged as collateral	10,595,293	'	10,595,293	'	10,867,411
Interest expenses	370,775	321,965	1,240,334	741,153	'
Short-term Debt [Member]	'	'	'	'	'
Short-term Debt [Line Items]	'	'	'	'	'
Land use right pledged as collateral	'	'	$3,020,539	'	'
Minimum interest rate	'	'	1.00%	'	'
Maximum interest rate	'	'	7.50%	'	'

Lines_of_credit_Details

Lines of credit (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Line of Credit Facility [Line Items]	'	'
Line of credit	$38,824,464	$74,606,494
Unused line of credit	19,250,318	29,303,645
Debt covenant, percentage of total net assets	20.00%	'
Bank of China [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	10-Mar-14	25-Jan-13	[1]
Maturity date	10-Mar-15	25-Jan-14	[1]
Line of credit	12,603,060	3,689,129
Unused line of credit	285,381	247,582
Bank of China [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	23-Jul-14	10-Jan-13	[2]
Maturity date	23-Jul-15	10-Jan-14	[2]
Line of credit	3,949,346	12,707,001
Unused line of credit	67,247	1,674,876
Industrial and Commercial Bank of China [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	26-Jul-12	26-Jul-12
Maturity date	25-Jul-15	25-Jul-15	[2]
Line of credit	6,504,805	6,558,452
Unused line of credit	5,041,224	1,803,574
China Citic Bank [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	25-Jun-14	29-Mar-13	[2]
Maturity date	25-Jun-15	29-Mar-14	[2]
Line of credit	8,014,850	7,378,259
Unused line of credit	6,104,063	5,738,646
China Everbright Bank [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	'	30-May-13	[1]
Maturity date	'	29-May-14	[1]
Line of credit	'	8,438,433
Unused line of credit	'	1,382,194
China Everbright Bank [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	'	4-Sep-13
Maturity date	'	3-Sep-14	[1]
Line of credit	'	1,147,729
Unused line of credit	'	'
Industrial Bank Co., LTD [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	'	24-Jul-13	[1]
Maturity date	'	24-Jul-14	[1]
Line of credit	'	8,198,065
Unused line of credit	'	6,558,452
Jiang Su Bank Co., LTD [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	'	21-Jun-13	[1]
Maturity date	'	20-Jun-14	[1]
Line of credit	'	4,918,839
Unused line of credit	'	'
Ping An Bank Co., Ltd [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	'	12-Nov-13
Maturity date	'	17-Sep-14	[1]
Line of credit	'	11,477,291	[1]
Unused line of credit	'	7,564,027	[1]
Shanghai Commercial & Savings Bank [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	19-Aug-14	29-Aug-13
Maturity date	19-Nov-14	29-Aug-14	[1]
Line of credit	4,500,000	3,000,000	[1]
Unused line of credit	4,500,000	1,250,000
Industrial and Commercial Bank of China (Macau) Ltd [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	'	29-Jul-13	[1]
Maturity date	'	29-Jan-14	[1]
Line of credit	'	7,093,296	[1]
Unused line of credit	'	3,084,294	[1]
China Minsheng Banking Corp.,Ltd [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Starting date	22-May-14	'
Maturity date	21-May-15	'
Line of credit	3,252,403	'
Unused line of credit	$3,252,403	'
[1]	(i) The lines of credit from these banks are terminated at maturity dates.
[2]	(ii) The lines of credit from these banks are rolled over after maturity dates.

Longterm_loans_Details

Long-term loans (Details)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Dec. 31, 2013
	USD ($)	USD ($)	Bank Of China [Member]	Bank Of China [Member]	Bank Of China [Member]	Bank Of China [Member]	Bank Of China [Member]	Bank Of China [Member]
			USD ($)	USD ($)	USD ($)	USD ($)	CNY	USD ($)
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Long term loan term	'	'	'	'	'5 years	'	'	'
Long-term loans, face amount	'	'	$8,127,042	'	$8,127,042	'	50,000,000	'
Debt instrument frequency of payment	'	'	'	'	'Quarterly	'	'	'
Long term loans from Bank of China	'	'	4,390,744	'	4,390,744	'	'	5,902,607
Less: current portion of long-term borrowings	1,951,442	1,967,536	1,951,442	'	1,951,442	'	'	1,967,536
Long-term borrowings, net of current portion	2,439,302	3,935,071	2,439,302	'	2,439,302	'	'	3,935,071
Stated interest rate	'	'	7.04%	'	7.04%	'	'	'
Interest rate multiple	'	'	110.00%	'	110.00%	'	'	'
Interest on long-term loans	'	'	87,759	122,741	287,743	404,965	'	'
Percent of principle to be paid in first year periods	'	'	'	'	2.00%	'	'	'
Percent of principle to be paid in subsequent periods	'	'	'	'	6.00%	'	'	'
Repayment schedule of the principal:	'	'	'	'	'	'	'	'
Remaining 2014	'	'	487,860	'	487,860	'	'	'
2015	'	'	1,951,442	'	1,951,442	'	'	'
2016	'	'	$1,951,442	'	$1,951,442	'	'	'

Sharebased_compensation_Narrat

Share-based compensation (Narrative) (Details) (USD $)

1 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

Apr. 30, 2014

Aug. 15, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Jan. 17, 2014

Jun. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Common Stock [Member]

Stock Options Related to Employees [Member]

Stock Options Related to Employees [Member]

Stock Options Related to Employees [Member]

Stock Options Related to Employees [Member]

Stock Options Related to Employees [Member]

Non Employee Stock Option [Member]

Non Employee Stock Option [Member]

Non Employee Stock Option [Member]

Non Employee Stock Option [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Warrant [Member]

Warrant [Member]

Warrant [Member]

2008 Omnibus Incentive Plan [Member]

2008 Omnibus Incentive Plan [Member]

2008 Omnibus Incentive Plan [Member]

Vesting Immediately [Member]

First Anniversary of Grant Date [Member]

Second Anniversary of Grant Date [Member]

Minimum [Member]

Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

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'

'

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Common stock available for issuance

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

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661,204

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Incentive plan term

'

'

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'

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'

'

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'

'

'

'

'

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'10 years

'

'

Common stock reserved for issuance

'

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'

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'

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'

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'

'

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2,000,000

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Vesting period for plan

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'3 years

'5 years

Aggregate intrinsic value of options vested and expected to vest

'

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$4,600,000

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$4,600,000

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'

'

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Common stock shares granted

'

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540,000

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'

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Options exercised

'

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74,052

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160,000

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Options forfeited

'

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29,204

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100,000

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Weighted-average fair value of options granted

'

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$1.95

'

'

'

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'

'

'

'

'

'

'

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'

'

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'

'

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Unrecognized share-based compensation expense

'

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1,100,000

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235,496

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Weighted-average recognition period

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'1 year 9 months 18 days

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'

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Share-based compensation

'

'

1,064,969

159,352

'

148,725

46,830

543,369

141,037

'

'

17,812

521,599

18,315

'

'

'

'

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Shares issued to consultants

40,000

150,000

'

'

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200,000

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Fair market value of shares issued

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171,000

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'

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390,000

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'

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Compensation expense related to shares issued

$94,982

'

$131,812

'

'

'

'

'

'

'

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'

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$235,000

$154,291

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Share-based Goods and Nonemployee Services Transaction, Shares Approved for Issuance

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150,000

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Restricted stock granted

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'

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246,000

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Vesting percentage

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30.00%

30.00%

40.00%

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'

'

'

'

'

Sharebased_compensation_Schedu

Share-based compensation (Schedule of Share-Based Compensation Related to Employees) (Details) (Stock Options Related to Employees [Member], USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Options Related to Employees [Member]	'	'	'
Number of Shares	'	'	'
Outstanding, beginning balance	1,105,000	665,000	'
Granted	'	540,000	'
Exercised	-160,000	'	'
Forfeited	-29,204	-100,000	'
Canceled	'	'	'
Outstanding, ending balance	915,796	1,105,000	665,000
Exercisable, ending balance	265,000	380,000	'
Vested and expected to vest, ending balance	837,760	940,022	'
Weighted Average Exercise Price	'	'	'
Outstanding, beginning balance	$2.87	$2.81	'
Granted	'	$2.63	'
Exercised	$2.69	'	'
Forfeited	$2.63	$1.15	'
Canceled	'	'	'
Outstanding, ending balance	$2.91	$2.87	$2.81
Exercisable, ending balance	$3.45	$3.14	'
Vested and expected to vest, ending balance	$2.93	$2.90	'
Remaining Contractual Term in Years	'	'	'
Outstanding	'7 years 2 months 23 days	'8 years 6 months 4 days	'8 years 4 months 6 days
Exercisable	'3 years 11 months 16 days	'7 years 2 months 8 days	'
Vested and expected to vest	'7 years 29 days	'8 years 3 months 29 days	'

Sharebased_compensation_Schedu1

Share-based compensation (Schedule of Restricted Stock Awards) (Details) (Restricted Stock [Member], USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Restricted Stock [Member]	'	'
Number of Shares	'	'
Outstanding, beginning balance	172,200	'
Granted	'	246,000
Released	'	'
Forfeited	'	'
Outstanding, ending balance	172,200	172,200
Expected to vest	137,601	'
Weighted Average Grant Date Fair Value	'	'
Outstanding, beginning balance	$2.81	'
Granted	'	'
Released	'	'
Forfeited	'	'
Outstanding, ending balance	$2.81	$2.81
Expected to vest	$2.81	'
Remaining Contractual Term in Years	'	'
Outstanding	'1 year 7 days	'1 year 9 months 7 days
Expected to vest	'1 year 7 days	'

Sharebased_compensation_Schedu2

Share-based compensation (Schedule of Assumptions Used, Related to Non-Employees) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Weighted Average Assumptions for Fair Values of Stock Options	'	'
Expected volatility	83.60%	'
Risk-free interest rate	1.64%	'
Expected term from grant date (in years)	'5 years	'
Dividend rate	'	'
Fair value	$1.95	'

Earnings_per_share_Details

Earnings per share (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Numerator:	'	'	'	'
Net income attributable to the Company	$874,167	$742,228	$751,516	$242,637
Denominator:	'	'	'	'
- Basic	15,052,158	13,657,930	14,632,491	13,607,474
- Diluted	15,590,142	13,657,930	15,045,776	13,607,474
- Basic	$0.06	$0.05	$0.05	$0.02
- Diluted	$0.06	$0.05	$0.05	$0.02
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Anti-dilutive securities excluded from calculation	540,001	565,000	540,001	565,000
Dilutive effect of options	915,796	'	'	'
Dilutive effect of warrants	200,000	'	'	'
Total dilutive effect	525,716	'	'	'

Securities_Offering_Transactio2

Securities Offering Transaction (Details) (USD $)	1 Months Ended		3 Months Ended		9 Months Ended			0 Months Ended	9 Months Ended
	Apr. 30, 2014	Aug. 15, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Apr. 17, 2014	Sep. 30, 2014	Sep. 30, 2013
								Investor Warrants [Member]	Investor Warrants [Member]	Investor Warrants [Member]
Class of Stock [Line Items]	'	'	'	'	'	'	'	'	'	'
Shares issued to investors	1,000,000	'	'	'	'	'	'	'	'	'
Number of shares covered by warrants	500,000	'	'	'	'	'	'	'	'	'
Shares issued, price per share	$5.05	'	'	'	'	'	'	'	'	'
Aggregate proceeds	$5,050,000	'	'	'	'	'	'	'	'	'
Shares covered by each warrant	0.5	'	'	'	'	'	'	'	'	'
Proceeds from issuance of capital stock, net	4,633,164	'	'	'	4,633,164	'	'	'	'	'
Warrant exercise price	$6.33	'	'	'	'	'	'	'	'	'
Warrant Liability	1,173,952	'	2,385,739	'	2,385,739	'	'	'	'	'
Value of shares issued	3,459,212	'	'	'	'	'	'	'	'	'
Expected volatility	'	'	'	'	'	'	'	85.76%	93.79%	'
Risk-free interest rate	'	'	'	'	'	'	'	0.90%	0.80%	'
Expected term (in years)	'	'	'	'	'	'	'	'3 years	'2 years 7 months 6 days	'
Dividend rate	'	'	'	'	'	'	'	'	'	'
Fair value	'	'	'	'	'	'	'	$2.30	$4.80	'
Loss on change of fair value of warrant liability	'	'	1,286,335	'	1,211,787	'	'	'	'	'
Warrants issued to investment banker	40,000	150,000	'	'	'	'	'	'	'	'
Share-based compensation to investment banker	$94,982	'	'	'	$131,812	'	'	'	'	'

Defined_contribution_plan_Deta

Defined contribution plan (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Defined contribution plan [Abstract]	'	'	'	'
Contributions to employee benefits plan	$424,841	$434,486	$1,128,544	$1,257,546

Noncontrolling_interest_Detail

Non-controlling interest (Details)

3 Months Ended

9 Months Ended

0 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

15-May-13

15-May-13

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Ganzhou Highpower Technology Company Limited [Member]

Ganzhou Highpower Technology Company Limited [Member]

Ganzhou Highpower Technology Company Limited [Member]

Ganzhou Highpower Technology Company Limited [Member]

Ganzhou Highpower Technology Company Limited [Member]

Ganzhou Highpower Technology Company Limited [Member]

Ganzhou Highpower Technology Company Limited [Member]

Ganzhou Highpower Technology Company Limited [Member]

Ganzhou Highpower Technology Company Limited [Member]

USD ($)

CNY

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

CNY

Subsidiary or Equity Method Investee [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional paid-in capital

$10,403,566

'

$10,403,566

'

$6,011,305

$4,807,847

30,000,000

'

'

'

'

'

$2,381,293

15,000,000

Non-controlling interest

1,159,039

'

1,159,039

'

1,299,252

'

'

1,159,039

'

1,159,039

'

1,299,252

'

'

Net income (loss) attributable to non-controlling interest

-68,023

-33,443

-129,588

-104,932

'

'

'

-68,023

-33,443

-129,588

-104,932

'

'

'

Cash proceeds from contribution

'

'

'

'

'

1,456,193

9,000,000

'

'

'

'

'

'

'

Proprietary technology acquired

'

'

'

'

'

970,795

6,000,000

'

'

'

'

'

'

'

Attributable equity interest held

'

'

'

'

'

'

'

60.00%

'

60.00%

'

60.00%

'

'

Equity interest held by partner

'

'

'

'

'

'

'

40.00%

'

40.00%

'

40.00%

'

'

Increase in noncontrolling interest

'

'

'

'

'

'

'

'

'

'

'

$582,477

'

'

Commitments_and_contingencies_1

Commitments and contingencies (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Commitments and contingencies [Abstract]	'	'	'	'	'
Rent expenses	$391,109	$361,672	$1,183,430	$992,054	'
Commitments and Contingencies Disclosure [Line Items]	'	'	'	'	'
Contracted capital commitments	'	'	'	'	$990,031
Minimum [Member]	'	'	'	'	'
Commitments and Contingencies Disclosure [Line Items]	'	'	'	'	'
Lease expiration year	'	'	'2014	'	'
Maximum [Member]	'	'	'	'	'
Commitments and Contingencies Disclosure [Line Items]	'	'	'	'	'
Lease expiration year	'	'	'2017	'	'

Commitments_and_contingencies_2

Commitments and contingencies (Schedule of Minimum Future Commitments for Operating Leases) (Details) (USD $)	Sep. 30, 2014
Commitments and contingencies [Abstract]	'
Remaining 2014	$401,347
2015	1,480,887
2016	1,338,853
2017	333,989
Total minimum future commitments	$3,555,076

Segment_information_Schedule_o

Segment information (Schedule of Segment Information about Revenues) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	$44,474,560	$38,852,978	$111,769,510	$94,429,966
Cost of Sales	35,069,440	31,609,991	88,703,954	76,689,340
Gross profit	9,405,120	7,242,987	23,065,556	17,740,626
Ni-MH Batteries [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	22,468,264	23,278,902	57,109,202	56,195,672
Cost of Sales	17,843,761	19,220,485	45,357,950	45,491,987
Gross profit	4,624,503	4,058,417	11,751,252	10,703,685
Lithium Batteries [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	21,069,435	14,960,966	51,971,642	36,541,465
Cost of Sales	16,355,265	11,859,111	40,935,690	29,664,911
Gross profit	4,714,170	3,101,855	11,035,952	6,876,554
New Materials [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales	936,861	613,110	2,688,666	1,692,829
Cost of Sales	870,414	530,395	2,410,314	1,532,442
Gross profit	$66,447	$82,715	$278,352	$160,387

Segment_information_Schedule_o1

Segment information (Schedule of Segment Information about Total Assets) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'
Total Assets	$149,538,685	$151,793,376
Nimh Batteries [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Total Assets	52,909,634	66,960,366
Lithium Batteries [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Total Assets	87,904,413	76,357,912
New Materials [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Total Assets	$8,724,638	$8,475,098

Segment_information_Schedule_o2

Segment information (Schedule of Geographic Information about Revenues) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net sales	$44,474,560	$38,852,978	$111,769,510	$94,429,966
China (including Hong Kong) [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net sales	27,698,729	25,308,214	72,064,966	52,936,205
Asia, Others [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net sales	3,979,662	3,975,389	8,304,209	11,084,009
Europe [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net sales	10,465,002	6,999,347	23,908,064	22,466,996
North America [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net sales	2,128,707	2,406,305	6,725,849	7,181,805
South America [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net sales	116,227	90,849	317,928	382,215
Africa [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net sales	43,872	28,877	281,016	248,275
Others [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net sales	$42,361	$43,997	$167,478	$130,461

Segment_information_Schedule_o3

Segment information (Schedule of Geographic Information about Accounts Receivable) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Accounts receivable	$38,107,418	$33,961,014
China (including Hong Kong) [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Accounts receivable	26,077,073	24,554,617
Asia, Others [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Accounts receivable	2,564,187	3,278,001
Europe [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Accounts receivable	8,610,537	5,191,444
North America [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Accounts receivable	776,601	863,156
South America [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Accounts receivable	38,465	50,691
Africa [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Accounts receivable	22,500	25
Others [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Accounts receivable	$18,055	$23,080