Highpower International (HPJ) 10-Q 14 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Aug. 14, 2015
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Entity Registrant Name	Highpower International, Inc.
Entity Central Index Key	1,368,308
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		15,101,679
Trading Symbol	HPJ

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents	$ 3,739,259	$ 14,611,892
Restricted cash	12,826,121	15,396,827
Accounts receivable, net	33,148,160	32,316,607
Notes receivable	2,271,470	621,110
Prepayments	5,587,678	3,283,520
Other receivables	712,666	665,828
Inventories	25,699,805	22,268,069
Total Current Assets	83,985,159	89,163,853
Property, plant and equipment, net	51,729,322	50,437,718
Land use right, net	4,263,472	4,305,317
Intangible asset, net	575,000	600,000
Deferred tax assets	1,880,410	1,647,184
TOTAL ASSETS	142,433,363	146,154,072
Current Liabilities:
Accounts payable	43,126,718	44,562,647
Deferred income	1,890,464	1,887,409
Short-term loan	9,147,609	15,195,040
Notes payable	33,259,448	29,903,248
Other payables and accrued liabilities	6,222,543	5,896,547
Income taxes payable	1,396,467	1,968,656
Current portion of long-term loan	1,962,420	1,959,248
Total Current Liabilities	97,005,669	101,372,795
Warrant Liability	636,542	1,067,674
Long-term loan	981,209	1,959,247
TOTAL LIABILITIES	$ 98,623,420	$ 104,399,716
COMMITMENTS AND CONTINGENCIES
Stockholders' 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, 15,101,679 shares issued and outstanding at June 30, 2015 and 15,084,746 shares issued and outstanding at December 31, 2014)	$ 1,510	$ 1,508
Additional paid-in capital	10,987,266	10,530,430
Statutory and other reserves	3,611,501	3,611,501
Retained earnings	22,418,787	20,675,021
Accumulated other comprehensive income	5,628,189	5,628,657
Total equity for the Company's stockholders	42,647,253	40,447,117
Non-controlling interest	1,162,690	1,307,239
TOTAL EQUITY	43,809,943	41,754,356
TOTAL LIABILITIES AND EQUITY	$ 142,433,363	$ 146,154,072

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2015	Dec. 31, 2014
CONSOLIDATED BALANCE SHEETS [Abstract]
Preferred Stock, par value per share	$ 0.0001	$ 0.0001
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	$ 0.0001	$ 0.0001
Common Stock, shares authorized	100,000,000	100,000,000
Common Stock, shares issued	15,101,679	15,084,746
Common Stock, shares outstanding	15,101,679	15,084,746

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) [Abstract]
Net sales	$ 38,635,801	$ 38,134,636	$ 70,773,449	$ 67,294,950
Cost of sales	(30,072,041)	(30,405,145)	(56,653,975)	(53,634,514)
Gross profit	8,563,760	7,729,491	14,119,474	13,660,436
Research and development expenses	(1,997,494)	(1,976,965)	(3,671,618)	(3,788,917)
Selling and distribution expenses	(1,597,564)	(1,587,726)	(3,396,286)	(3,124,886)
General and administrative expenses	(3,423,770)	(3,312,296)	(6,448,521)	(6,883,576)
Foreign currency translation gain	$ 73,546	247,102	$ 443,857	349,695
Gain (loss) on derivative instruments		21,147		(116,134)
Total operating expenses	$ (6,945,282)	(6,608,738)	$ (13,072,568)	(13,563,818)
Income from operations	1,618,478	1,120,753	1,046,906	96,618
Gain on change of fair value of warrant liability	84,833	74,548	431,132	74,548
Other income	357,055	361,954	587,147	903,374
Interest expenses	(275,476)	(474,162)	(544,118)	(1,069,543)
Income before taxes	1,784,890	1,083,093	1,521,067	4,997
Income taxes benefit (expenses)	(18,840)	(281,364)	76,416	(189,213)
Net income (loss)	1,766,050	801,729	1,597,483	(184,216)
Less: net loss attributable to non-controlling interest	(101,074)	(10,769)	(146,283)	(61,565)
Net income (loss) attributable to the Company	1,867,124	812,498	1,743,766	(122,651)
Comprehensive income (loss)
Net income (loss)	1,766,050	801,729	1,597,483	(184,216)
Foreign currency translation income (loss)	206,027	(19,936)	1,266	(361,122)
Comprehensive income (loss)	1,972,077	781,793	1,598,749	(545,338)
Less: comprehensive loss attributable to non-controlling interest	(95,376)	(11,294)	(144,549)	(72,727)
Comprehensive income (loss) attributable to the Company	$ 2,067,453	$ 793,087	$ 1,743,298	$ (472,611)
Income (loss) per share of common stock attributable to the Company
- Basic	$ 0.12	$ 0.05	$ 0.12	$ (0.01)
- Diluted	$ 0.12	$ 0.05	$ 0.11	$ (0.01)
Weighted average number of common stock outstanding
- Basic	15,094,979	14,853,219	15,091,639	14,415,662
- Diluted	15,441,576	15,277,743	15,469,274	14,415,662

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities
Net income (loss)	$ 1,597,483	$ (184,216)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	2,535,695	2,053,486
Allowance for doubtful accounts	896	266
Loss on disposal of property, plant and equipment	$ 79,692	151,237
Gain on derivative instruments		130,948
Deferred income tax	$ (230,050)	(549,140)
Share based payment	412,304	916,244
Gain on change of fair value of warrant liability	(431,132)	(74,548)
Changes in operating assets and liabilities:
Accounts receivable	(787,672)	159,094
Notes receivable	(1,645,051)	(1,560,871)
Prepayments	(2,292,844)	(1,200,028)
Other receivables	(45,640)	253,843
Inventories	(3,386,818)	(1,086,899)
Accounts payable	$ (1,503,555)	6,887,622
Deferred income		1,009,295
Other payables and accrued liabilities	$ 315,942	(2,175,844)
Income taxes payable	(573,875)	88,688
Net cash flows (used in) provided by operating activities	(5,954,625)	4,819,177
Cash flows from investing activities
Acquisitions of plant and equipment	(4,047,717)	(3,503,027)
Net cash flows used in investing activities	$ (4,047,717)	(3,503,027)
Cash flows from financing activities
Proceeds from short-term bank loans		9,611,198
Repayment of short-term bank loans	$ (6,062,248)	(14,367,008)
Repayment of long-term bank loans	(978,649)	(976,737)
Proceeds from notes payable	30,931,015	21,753,902
Repayment of notes payable	(27,631,861)	$ (25,195,047)
Proceeds from exercise of employee options	$ 44,534
Proceeds from issuance of capital stock, net		$ 4,633,164
Change in restricted cash	$ 2,588,730	8,316,169
Net cash flows (used in) provided by financing activities	(1,108,479)	3,775,641
Effect of foreign currency translation on cash and cash equivalents	238,188	(244,829)
Net (decrease) increase in cash and cash equivalents	(10,872,633)	4,846,962
Cash and cash equivalents - beginning of period	14,611,892	7,973,459
Cash and cash equivalents - end of period	3,739,259	12,820,421
Cash paid for:
Income taxes	727,509	649,665
Interest expenses	$ 615,363	1,061,904
Non-cash transactions
Accounts payable for construction in progress		794,356
Offset of deferred income and property, plant and equipment		$ 669,668

Organization and basis of prese

Organization and basis of presentation	6 Months Ended
	Jun. 30, 2015
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 RMB 15,000,000 2,381,293 30,000,000 4,807,847 60 40 30,000,000 4,898,119 40,000,000 6,530,825 10,000,000 70 30 In April 2014, the Company and certain institutional investors entered into a securities purchase agreement, pursuant to which the Company sold 1,000,000 500,000 5.05 5.05 0.50 4,633,164 The subsidiaries of the Company and their principal activities are described as follows: Name of company Place and date incorporation Attributable equity interest held Principal activities Hong Kong Highpower Technology Co., Ltd Hong Kong July 4, 2003 100 % Investment holding and marketing of batteries Shenzhen Highpower Technology Co., Ltd PRC October 8, 2002 100 % Manufacturing & marketing of batteries Highpower Energy Technology (Huizhou) Co., Ltd PRC January 29, 2008 100 % Inactive Springpower Technology (Shenzhen) Co., Ltd PRC June 4, 2008 100 % Research & manufacturing of batteries Ganzhou Highpower Technology Co., Ltd PRC September 21, 2010 70 % Processing, marketing and research of battery materials Icon Energy System Co., Ltd. PRC February 23, 2011 100 % Research and production of advanced battery packs and systems Huizhou Highpower Technology Co., Ltd PRC March 8, 2012 100 % Manufacturing & marketing of batteries

Summary of significant accounti

Summary of significant accounting policies	6 Months Ended
	Jun. 30, 2015
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, 2014, which has been derived from audited financial statements, and the unaudited interim consolidated financial statements as of June 30, 2015 and for the three and six month periods ended June 30, 2015 and 2014 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, 2014, 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 June 30, 2015, its consolidated results of operations and cash flows for the six month periods ended June 30, 2015 and 2014, 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 inherent ly uncertain and unpredictable. 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 the six months ended June 30, 2015 and 2014. No supplier accounted for 10% or more of total purchase amount during the six months ended June 30, 2015 and 2014. None of the Company's customers accounted for 10% or more of the accounts receivable as of June 30, 2015 and December 31, 2014. 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. Leasehold improvements are amortized on a straight-line basis over the shorter of the lease term or estimated useful life. 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 5 % 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 1,890,464 1,887,409 221,483 180,923 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 $ 484,903 413,112 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 six months ended June 30, 2015 and 2014. 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 June 30, 2015 and December 31, 2014. 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 or loss, 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 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 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 August 14, 2015, the Financial Accounting Standards Board (“FASB”) has issued ASU No. 2015-01 Income Statement-Extraordinary and Unusual Items through ASU No. 2015-11 Inventory, which are not expected to have a material impact on the consolidated financial statements upon adoption.

Restricted cash

Restricted cash	6 Months Ended
	Jun. 30, 2015
Restricted cash [Abstract]
Restricted cash	3. Restricted cash As of June 30, 2015 and December 31, 2014, restricted cash consisted of the following: June 30, December 31, 2015 2014 (Unaudited) $ $ Securities for bank acceptance bill 11,028,827 10,689,297 Time deposits 1,797,294 4,707,530 12,826,121 15,396,827

Accounts receivable, net

Accounts receivable, net	6 Months Ended
	Jun. 30, 2015
Accounts receivable, net [Abstract]
Accounts receivable, net	4. Accounts receivable, net As of June 30, 2015 and December 31, 2014, accounts receivable consisted of the following: June 30, December 31, 2015 2014 (Unaudited) $ $ Accounts receivable 35,651,499 34,816,914 Less: allowance for doubtful debts 2,503,339 2,500,307 33,148,160 32,316,607 The Company recorded bad debt expense of $ 896 266 877 266 nil 2,951 nil

Prepayments

Prepayments	6 Months Ended
	Jun. 30, 2015
Prepayments [Abstract]
Prepayments	5. Prepayments June 30, December 31, 2015 2014 (Unaudited) $ $ Purchase deposits paid 2,683,479 1,793,599 Value-added tax prepayment 1,170,499 384,008 Rental deposit 266,973 266,556 Deferred insurance fee 204,890 97,005 Advances to staff for operations 185,302 122,452 Other deposits and prepayments 1,076,535 619,900 5,587,678 3,283,520 Other deposits and prepayments represent deferred expenses and prepayments to services providers.

Other receivables

Other receivables	6 Months Ended
	Jun. 30, 2015
Other receivables [Abstract]
Other receivables	6. Other receivables June 30, December 31, 2015 2014 (Unaudited) $ $ Compensation receivable for land occupation 517,255 516,418 Others 195,411 149,410 712,666 665,828

Inventories

Inventories	6 Months Ended
	Jun. 30, 2015
Inventories [Abstract]
Inventories	7. Inventories June 30, December 31, 2015 2014 (Unaudited) $ $ Raw materials 5,378,464 4,341,675 Work in progress 5,506,411 3,949,778 Finished goods 14,403,742 13,685,166 Packing materials 23,558 20,137 Consumables 387,630 271,313 25,699,805 22,268,069 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. $ 1,169,186 777,638

Property, plant and equipment

Property, plant and equipment	6 Months Ended
	Jun. 30, 2015
Property, plant and equipment [Abstract]
Property, plant and equipment	8. Property, plant and equipment June 30, December 31, 2015 2014 (Unaudited) $ $ Cost Construction in progress 1,155,430 715,821 Furniture, fixtures and office equipment 4,002,756 3,754,990 Leasehold improvement 4,264,250 3,763,290 Machinery and equipment 30,406,838 28,180,306 Motor vehicles 1,587,842 1,479,921 Building 25,337,786 25,414,914 66,754,902 63,309,242 Less: accumulated depreciation 15,025,580 12,871,524 51,729,322 50,437,718 The Company recorded depreciation expenses of $ 2,462,008 1,979,893 1,252,756 1,009,036 During the year ended December 31, 2014, the Company deducted deferred income related to government grants of $ 672,675 The buildings comprising the Huizhou facilities were pledged as collateral for bank loans as of June 30, 2015 and December 31, 2014. The carrying amount of the building was $ 10,461,665 10,573,369 On July 1, 2015, the buildings comprising the Ganzhou facilities were pledged as collateral for line of credit, which were used for short-term loans and bank guarantee promissory notes. The carrying amount of the building was $ 2,874,363

Land use rights, net

Land use rights, net	6 Months Ended
	Jun. 30, 2015
Land use rights, net [Abstract]
Land use rights, net	9. Land use rights, net June 30, December 31, 2015 2014 (Unaudited) $ $ Cost Land located in Huizhou 3,511,597 3,505,921 Land located in Ganzhou 1,369,944 1,367,729 4,881,541 4,873,650 Accumulated amortization (618,069 ) (568,333 ) Net 4,263,472 4,305,317 As of June 30, 2015, 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 58,669 May 23, 2057 January 4, 2062 Land use rights are being amortized annually using the straight-line method over a contract term of 50 $ Remaining 2015 48,815 2016 97,631 2017 97,631 2018 97,631 2019 97,631 2020 and thereafter 3,824,133 4,263,472 The Company recorded amortization expenses of $ 48,688 48,593 24,397 20,149 The land use right for land located in Huizhou City was pledged as collateral for bank loans as of June 30, 2015 and December 31, 2014. On July 1, 2015, the land use right for land located in Ganzhou City was pledged as collateral for line of credit, which was used for short-term loans and bank guarantee promissory notes.

Intangible asset

Intangible asset	6 Months Ended
	Jun. 30, 2015
Intangible asset [Abstract]
Intangible asset	10. Intangible asset June 30, December 31, 2015 2014 (Unaudited) $ $ Cost Consumer battery license fee 1,000,000 1,000,000 Accumulated amortization (425,000 ) (400,000 ) Net 575,000 600,000 The Company is amortizing the $1,000,000 cost of the Consumer Battery License Agreement with Ovonic over a period of 20 As of June 30, 2015 and December 31, 2014, 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 $ 25,000 12,500

Other payables and accrued liab

Other payables and accrued liabilities	6 Months Ended
	Jun. 30, 2015
Other payables and accrued liabilities [Abstract]
Other payables and accrued liabilities	11. Other payables and accrued liabilities June 30, December 31, 2015 2014 (Unaudited) $ $ Accrued expenses 4,338,892 3,649,806 Royalty payable 492,252 580,032 VAT payable 262,539 405,859 Sales deposits received 791,170 911,947 Other payables 337,690 348,903 6,222,543 5,896,547

Taxation

Taxation	6 Months Ended
	Jun. 30, 2015
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. In China, the companies granted with National High-tech Enterprise (“NHTE”) status enjoy 15% income tax rate. This status needs to be renewed every three years. In 2008, SZ Highpower received NHTE status, which was renewed in 2011 and recently renewed in 2014. In 2013, SZ Springpower received NHTE status. In 2014, both GZ Highpower and ICON received NHTE status. If these subsidiaries fail to renew NHTE status, they will be subject to income tax at a rate of 25% after the expiration of NHTE status. 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 2015 and 2014. The components of the provision for income taxes expenses are: Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Current 61,517 411,598 153,634 738,353 Deferred (42,677 ) (130,234 ) (230,050 ) (549,140 ) Total 18,840 281,364 (76,416 ) 189,213 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 June 30, Six months ended June 30, 2015 2014 2015 2014 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Income before tax 1,784,890 1,083,093 1,521,067 4,997 Provision for income taxes at applicable income tax rate 399,114 226,097 312,941 (80,869 ) Effect of preferential tax rate 37,545 (190,789 ) 31,250 (213,923 ) R&D expenses eligible for super deduction (555,607 ) (71,605 ) (555,607 ) (71,605 ) Non-deductible expenses 11,947 62,353 26,901 80,491 Change in valuation allowance 125,841 255,308 108,099 475,119 Effective enterprise income tax 18,840 281,364 (76,416 ) 189,213 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. June 30, December 31, 2015 2014 (Unaudited) $ $ Tax loss carry-forward 3,899,194 3,798,290 Allowance for doubtful receivables 111,953 111,637 Allowance for inventory obsolescence 222,571 138,458 Difference for sales cut-off 43,093 20,572 Deferred income 283,570 283,111 Property, plant and equipment subsidized by government grant 99,801 100,901 Total gross deferred tax assets 4,660,182 4,452,969 Valuation allowance (2,779,772 ) (2,805,785 ) Total net deferred tax assets 1,880,410 1,647,184

Notes payable

Notes payable	6 Months Ended
	Jun. 30, 2015
Notes payable [Abstract]
Notes payable	13. Notes payable Notes payable are presented to certain suppliers as a payment against the outstanding trade payables. Notes payable are mainly bank guarantee promissory notes which are non-interest bearing and generally mature within six months. The outstanding bank guarantee promissory notes are secured by restricted cash deposited in banks and $ 1,141,861 33,079,560 29,380,782 As of June 30, 2015, the Company issued $ 179,888 522,466

Short-term loans

Short-term loans	6 Months Ended
	Jun. 30, 2015
Short-term loans [Abstract]
Short-term loans	14. Short-term loans June 30, December 31, 2015 2014 (Unaudited) $ $ Short- term bank loans guaranteed and repayable within one year 9,147,609 15,195,040 As of June 30, 2015, 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 $ 2,984,858 10,461,665 The loans as of June 30, 2015 were primarily obtained from three banks 6.0 6.72 419,156 869,559 218,142 377,796

Lines of credit

Lines of credit	6 Months Ended
	Jun. 30, 2015
Lines 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 June 30, 2015 and December 31, 2014: June 30, 2015 (Unaudited) Lender Starting date Maturity date Line of credit Unused line of credit $ $ Bank of China 7/23/2014 7/23/2015 3,971,564 84,262 Ping An Bank Co., Ltd 10/20/2014 10/19/2015 11,447,448 6,887,767 Shenzhen Baoan Guiyin County Bank 11/19/2014 11/18/2015 , 4,742,514 3,156,055 Industrial and Commercial Bank of China 7/26/2012 7/25/2015 6,541,399 2,453,025 Industrial Bank Co., Ltd 10/23/2014 10/23/2015 6,541,399 5,664,022 Jiang Su Bank Co., Ltd 10/28/2014 9/11/2015 7,547,768 1,629,595 China Everbright Bank Co., Ltd 6/23/2015 6/22/2016 8,176,748 4,411,743 Total 48,968,840 24,286,469 (i) The lines of credit from these banks are terminated at maturity dates. December 31, 2014 Lender Starting date Maturity date Line of credit Unused line of credit $ $ Bank of China 3/10/2014 3/10/2015 12,653,474 424,823 Bank of China 7/23/2014 7/23/2015 3,965,144 67,516 Ping An Bank Co., Ltd 10/20/2014 10/19/2015 11,428,945 295,818 China Minsheng Banking Corp., LTD 5/22/2014 5/22/2015 3,265,413 - Shenzhen Baoan Guiyin County Bank 11/19/2014 11/18/2015 4,734,848 1,750,151 Industrial and Commercial Bank of China 7/26/2012 7/25/2015 6,530,826 3,918,496 China Citic Bank 6/25/2014 6/25/2015 8,046,910 6,788,093 Industrial Bank Co., Ltd 10/23/2014 10/23/2015 6,530,825 4,430,636 Jiang Su Bank Co., Ltd 10/28/2014 9/11/2015 4,898,119 4,898,119 Total 62,054,504 22,573,652 (ii) The lines of credit from Bank of China matured at maturity date. No renewal agreement was signed after maturity date. The lines of credits from Industrial and Commercial Bank of China, Ping An Bank, Industrial Bank Co. Ltd, Shenzhen Baoan Guiyin County Bank and China Everbright Bank Co., Ltd are guaranteed by the Company's Chief Executive Officer, Mr. Dang Yu Pan. The lines of credits from Jiang Su Bank are guaranteed by the Company's Chief Executive Officer, Mr. Dang Yu Pan, and his wife. The lines of credits from Bank of China are guaranteed by the Company's Chief Executive Officer, Mr. Dang Yu Pan and Vice President, Wen Liang Li. 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

Long-term loans

Long-term loans	6 Months Ended
	Jun. 30, 2015
Long-term loans [Abstract]
Long-term loans	16. Long-term loans June 30, December 31, 2015 2014 (Unaudited) $ $ Long term loans from Bank of China 2,943,629 3,918,495 Less: current portion of long-term borrowings 1,962,420 1,959,248 Long- term bank loans, net of current portion 981,209 1,959,247 On January 13, 2012, the Company borrowed $ 8,198,065 50 five-year 5.775 110 The interest expenses were $ 124,962 199,984 57,334 96,366 The principal is to be repaid quarterly from September 30, 2012. 2 6 The repayment schedule of the principal is summarized as in below table: $ Remaining 2015 981,209 2016 1,962,420 2,943,629

Share-based Compensation

Share-based Compensation	6 Months Ended
	Jun. 30, 2015
Share-based Compensation [Abstract]
Share-based Compensation	17. Share-based Compensation The 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 two million 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 three five 626,714 Options Granted to Employees Number of Shares Weighted Average Exercise Price Remaining Contractual Term in Years $ Outstanding, January 1, 2014 1,105,000 2.87 8.51 Granted - - - Exercised (200,000 ) 2.41 - Forfeited (44,714 ) 2.63 - Canceled (100,000 ) 3.55 - Outstanding, December 31, 2014 760,286 2.92 7.78 Exercisable, December 31, 2014 413,620 3.16 6.98 Vested and expected to vest, December 31, 2014 702,788 2.94 7.71 Number of Shares Weighted Average Exercise Price Remaining Contractual Term in Years $ Outstanding, January 1, 2015 760,286 2.92 7.78 Granted 75,000 4.43 - Exercised (16,933 ) 2.63 - Forfeited (8,564 ) 2.63 - Canceled - - - Outstanding, June 30, 2015 809,789 3.06 7.49 Exercisable, June 30, 2015 451,658 3.32 6.82 Vested and expected to vest, June 30, 2015 745,678 3.09 7.41 The aggregate intrinsic value of options vested and expected to vest as of June 30, 2015 and 2014 was approximately $ 0.6 1.64 During the three and six months ended June 30, 2015, the Company granted options to purchase 75,000 16,933 8,564 3,670 During the three and six months ended June 30, 2014, the Company did not grant any new options to employees. One employee exercised his options to purchase 160,000 74,052 15,549 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 30 30 40 There were no RSAs granted to employees during the six months ended June 30, 2015 and 2014 The following table summarizes the restricted stock awards activities for the six months ended June 30, 2015: Number of Shares Weighted Average Exercise Price Remaining Contractual Term in Years $ Outstanding, January 1, 2015 98,400 2.81 0.77 Granted - - - Exercised - - - Forfeited - - - Outstanding, June 30, 2015 98,400 2.81 0.27 Expected to vest, June 30, 2015 85,386 2.81 0.27 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 150,000 171,000 The Company also agreed to issue another 150,000 150,000 Also, in connection with this consulting agreement, on January 17, 2014 the Company issued five 200,000 390,000 Six months Ended 2015 2014 Expected volatility N/A 83.62 % Risk-free interest rate N/A 1.64 % Expected term from grant date (in years) N/A 4.75 Dividend rate N/A - Fair value N/A $ 2.02 Expected Term The expected term of the warrants issued during the six months ended June 30, 2014, represents the remaining contractual term of the warrants. Expected Volatility The expected volatility used for the six-month period ended June 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 half year 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. Total Share-based Compensation Expenses As of June 30, 2015, the gross amount of unrecognized share-based compensation expense relating to unvested share-based awards held by employees was approximately $ 0.6 1.45 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 $ 412,304 nil 394,645 521,599 290,943 nil 169,365 345,933

Earnings per share

Earnings per share	6 Months Ended
	Jun. 30, 2015
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 six months ended June 30, 2015 and 2014, and the three months ended June 30, 2015 and 2014. Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Numerator: Net income (loss) attributable to the Company 1,867,124 812,498 1,743,766 (122,651 ) Denominator: Weighted-average shares outstanding - Basic 15,094,979 14,853,219 15,091,639 14,415,662 - Diluted 15,441,576 15,277,743 15,469,274 14,415,662 Income (loss) per common share - Basic 0.12 0.05 0.12 (0.01 ) - Diluted 0.12 0.05 0.11 (0.01 ) 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. 1,641,723 377,635 1,669,452 There were 1,641,723 1,669,452 346,597 424,524

Securities Offering Transaction

Securities Offering Transaction	6 Months Ended
	Jun. 30, 2015
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 1,000,000 500,000 5.05 5.05 one one 0.50 4,633,164 The warrants have an initial exercise price of $ 6.33 6.33 The warrants were classified as a liability. The aggregate fair value of the warrant liability at issuance dates was $ 1,173,952 3,459,212 The fair values of the warrants as of April 17, 2014 were calculated using the Black-Scholes pricing model with the following assumptions: April 17,2014 Expected volatility 85.76 % Risk-free interest rate 0.9 % Expected term (in years) 3.0 Dividend rate - Fair value $ 2.3 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 June 30, 2015 and December 31, 2014, the fair value of warrant liability was $ 636,542 1,067,674 431,132 The fair values of the warrants as of June 30, 2015 and December 31, 2014 were calculated using the Black-Scholes pricing model with the following assumptions: June 30,2015 December 31,2014 Expected volatility 86.32 % 86.4 % Risk-free interest rate 0.57 % 0.79 % Expected term (in years) 1.79 2.29 Dividend rate - - Fair value $ 1.27 $ 2.14 In conjunction with the securities offering transaction, the Company issued three 40,000 6.33 94,982

Defined contribution plan

Defined contribution plan	6 Months Ended
	Jun. 30, 2015
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 $ 826,889 703,703 414,201 343,804

Non-controlling interest

Non-controlling interest	6 Months Ended
	Jun. 30, 2015
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. On May 15, 2013, GZ Highpower increased its paid-in capital from RMB 15,000,000 2,381,293 30,000,000 4,807,847 60 40 30,000,000 4,898,119 40,000,000 6,530,825 10,000,000 70 30 As of June 30, 2015 and December 31, 2014, non-controlling interest related to GZ Highpower in the consolidated balance sheet was $ 1,162,690 1,307,239 Non-controlling interest related to GZ Highpower in the consolidated statements of operations was loss of $ 146,283 61,565 101,074 10,769

Commitments and contingencies

Commitments and contingencies	6 Months Ended
	Jun. 30, 2015
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 2015 2026 $ Within one year 848,746 One to two years 1,783,158 Two to three years 695,915 Three to four years 360,047 Four to five years 360,047 More than five years 2,280,298 6,328,211 Rent expenses for the six months ended June 30, 2015 and 2014 were $ 819,448 792,321 415,254 404,641 Capital commitments The Company has no capital commitments as of June 30, 2015 and December 31, 2014, respectively.

Segment information

Segment information	6 Months Ended
	Jun. 30, 2015
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 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 June 30, Six months ended June 30, 2015 2014 2015 2014 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Net sales Ni-MH Batteries 15,775,426 19,153,435 30,534,896 34,640,938 Lithium Batteries 22,066,302 17,511,963 38,886,930 30,902,207 New Materials 794,073 1,469,238 1,351,623 1,751,805 Total 38,635,801 38,134,636 70,773,449 67,294,950 Cost of Sales Ni-MH Batteries 11,850,483 15,224,391 23,565,936 27,514,189 Lithium Batteries 17,307,091 13,877,599 31,640,483 24,580,425 New Materials 914,467 1,303,155 1,447,556 1,539,900 Total 30,072,041 30,405,145 56,653,975 53,634,514 Gross Profit Ni-MH Batteries 3,924,943 3,929,044 6,968,960 7,126,749 Lithium Batteries 4,759,211 3,634,364 7,246,447 6,321,782 New Materials (120,394 ) 166,083 (95,933 ) 211,905 Total 8,563,760 7,729,491 14,119,474 13,660,436 June 30, 2015 December 31, 2014 (Unaudited) $ $ Total Assets Ni-MH Batteries 45,677,975 50,275,286 Lithium Batteries 85,734,415 86,339,973 New Materials 11,020,973 9,538,813 Total 142,433,363 146,154,072 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 June 30, Six months ended 2015 2014 2015 2014 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Net sales China Mainland 19,290,058 19,913,436 33,315,390 34,426,658 Asia, others 11,637,753 8,681,760 22,079,640 14,264,126 Europe 5,749,314 7,053,769 11,565,500 13,443,062 North America 1,783,947 2,254,835 3,340,558 4,597,142 South America 147,644 76,320 301,573 201,701 Africa - 77,365 103,807 237,144 Others 27,085 77,151 66,981 125,117 38,635,801 38,134,636 70,773,449 67,294,950 June 30, 2015 December 31, 2014 (Unaudited) $ $ Accounts receivable China Mainland 18,359,292 17,282,481 Asia, others 9,598,895 8,662,503 Europe 4,831,683 5,747,058 North America 77,961 296,572 South America 221,854 211,391 Africa 41,940 81,962 Others 16,535 34,640 33,148,160 32,316,607

Subsequent event

Subsequent event	6 Months Ended
	Jun. 30, 2015
Subsequent event [Abstract]
Subsequent event	24. Subsequent event The Company has evaluated subsequent events through the issuance of the consolidated financial statements and no subsequent event is identified.

Summary of significant accoun30

Summary of significant accounting policies (Policy)	6 Months Ended
	Jun. 30, 2015
Summary of significant accounting policies [Abstract]
Basis of presentation	Basis of presentation The accompanying consolidated balance sheet as of December 31, 2014, which has been derived from audited financial statements, and the unaudited interim consolidated financial statements as of June 30, 2015 and for the three and six month periods ended June 30, 2015 and 2014 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, 2014, 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 June 30, 2015, its consolidated results of operations and cash flows for the six month periods ended June 30, 2015 and 2014, 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 inherent ly uncertain and unpredictable.
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 the six months ended June 30, 2015 and 2014. No supplier accounted for 10% or more of total purchase amount during the six months ended June 30, 2015 and 2014. None of the Company's customers accounted for 10% or more of the accounts receivable as of June 30, 2015 and December 31, 2014.
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. Leasehold improvements are amortized on a straight-line basis over the shorter of the lease term or estimated useful life. 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 5 % 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 1,890,464 1,887,409 221,483 180,923
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 $ 484,903 413,112
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 six months ended June 30, 2015 and 2014.
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 June 30, 2015 and December 31, 2014.
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 or loss, 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
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
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 August 14, 2015, the Financial Accounting Standards Board (“FASB”) has issued ASU No. 2015-01 Income Statement-Extraordinary and Unusual Items through ASU No. 2015-11 Inventory, which are not expected to have a material impact on the consolidated financial statements upon adoption.

Organization and basis of pre31

Organization and basis of presentation (Tables)	6 Months Ended
	Jun. 30, 2015
Organization and basis of presentation [Abstract]
Subsidiaries and Principal Activities	Name of company Place and date incorporation Attributable equity interest held Principal activities Hong Kong Highpower Technology Co., Ltd Hong Kong July 4, 2003 100 % Investment holding and marketing of batteries Shenzhen Highpower Technology Co., Ltd PRC October 8, 2002 100 % Manufacturing & marketing of batteries Highpower Energy Technology (Huizhou) Co., Ltd PRC January 29, 2008 100 % Inactive Springpower Technology (Shenzhen) Co., Ltd PRC June 4, 2008 100 % Research & manufacturing of batteries Ganzhou Highpower Technology Co., Ltd PRC September 21, 2010 70 % Processing, marketing and research of battery materials Icon Energy System Co., Ltd. PRC February 23, 2011 100 % Research and production of advanced battery packs and systems Huizhou Highpower Technology Co., Ltd PRC March 8, 2012 100 % Manufacturing & marketing of batteries

Summary of significant accoun32

Summary of significant accounting policies (Tables)	6 Months Ended
	Jun. 30, 2015
Summary of significant accounting policies [Abstract]
Schedule of Depreciation Rate of Plant and Equipment	Buildings 2.5 5 % Furniture, fixtures and office equipment 20 % Leasehold improvement 20 50 % Machinery and equipment 10 % Motor vehicles 20 %

Restricted cash (Tables)

Restricted cash (Tables)	6 Months Ended
	Jun. 30, 2015
Restricted cash [Abstract]
Summary of Restricted Cash Held by Company	June 30, December 31, 2015 2014 (Unaudited) $ $ Securities for bank acceptance bill 11,028,827 10,689,297 Time deposits 1,797,294 4,707,530 12,826,121 15,396,827

Accounts receivable, net (Table

Accounts receivable, net (Tables)	6 Months Ended
	Jun. 30, 2015
Accounts receivable, net [Abstract]
Schedule of Accounts Receivable	June 30, December 31, 2015 2014 (Unaudited) $ $ Accounts receivable 35,651,499 34,816,914 Less: allowance for doubtful debts 2,503,339 2,500,307 33,148,160 32,316,607

Prepayments (Tables)

Prepayments (Tables)	6 Months Ended
	Jun. 30, 2015
Prepayments [Abstract]
Schedule of Prepayments	June 30, December 31, 2015 2014 (Unaudited) $ $ Purchase deposits paid 2,683,479 1,793,599 Value-added tax prepayment 1,170,499 384,008 Rental deposit 266,973 266,556 Deferred insurance fee 204,890 97,005 Advances to staff for operations 185,302 122,452 Other deposits and prepayments 1,076,535 619,900 5,587,678 3,283,520

Other receivables (Tables)

Other receivables (Tables)	6 Months Ended
	Jun. 30, 2015
Other receivables [Abstract]
Schedule of Other Receivables	June 30, December 31, 2015 2014 (Unaudited) $ $ Compensation receivable for land occupation 517,255 516,418 Others 195,411 149,410 712,666 665,828

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2015
Inventories [Abstract]
Schedule of Inventories	June 30, December 31, 2015 2014 (Unaudited) $ $ Raw materials 5,378,464 4,341,675 Work in progress 5,506,411 3,949,778 Finished goods 14,403,742 13,685,166 Packing materials 23,558 20,137 Consumables 387,630 271,313 25,699,805 22,268,069

Property, plant and equipment (

Property, plant and equipment (Tables)	6 Months Ended
	Jun. 30, 2015
Property, plant and equipment [Abstract]
Schedule of Plant and Equipment, Net	June 30, December 31, 2015 2014 (Unaudited) $ $ Cost Construction in progress 1,155,430 715,821 Furniture, fixtures and office equipment 4,002,756 3,754,990 Leasehold improvement 4,264,250 3,763,290 Machinery and equipment 30,406,838 28,180,306 Motor vehicles 1,587,842 1,479,921 Building 25,337,786 25,414,914 66,754,902 63,309,242 Less: accumulated depreciation 15,025,580 12,871,524 51,729,322 50,437,718

Land use rights, net (Tables)

Land use rights, net (Tables) - Land Use Right [Member]	6 Months Ended
	Jun. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Schedule of Land Use Rights	June 30, December 31, 2015 2014 (Unaudited) $ $ Cost Land located in Huizhou 3,511,597 3,505,921 Land located in Ganzhou 1,369,944 1,367,729 4,881,541 4,873,650 Accumulated amortization (618,069 ) (568,333 ) Net 4,263,472 4,305,317
Schedule of Estimated Amortization Expenses	$ Remaining 2015 48,815 2016 97,631 2017 97,631 2018 97,631 2019 97,631 2020 and thereafter 3,824,133 4,263,472

Intangible asset (Tables)

Intangible asset (Tables)	6 Months Ended
	Jun. 30, 2015
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Schedule of Intangible Assets	June 30, December 31, 2015 2014 (Unaudited) $ $ Cost Consumer battery license fee 1,000,000 1,000,000 Accumulated amortization (425,000 ) (400,000 ) Net 575,000 600,000

Other payables and accrued li41

Other payables and accrued liabilities (Tables)	6 Months Ended
	Jun. 30, 2015
Other payables and accrued liabilities [Abstract]
Schedule of Other Payables and Accrued Liabilities	June 30, December 31, 2015 2014 (Unaudited) $ $ Accrued expenses 4,338,892 3,649,806 Royalty payable 492,252 580,032 VAT payable 262,539 405,859 Sales deposits received 791,170 911,947 Other payables 337,690 348,903 6,222,543 5,896,547

Taxation (Tables)

Taxation (Tables)	6 Months Ended
	Jun. 30, 2015
Taxation [Abstract]
Components of Provision for Income Taxes Benefit	Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Current 61,517 411,598 153,634 738,353 Deferred (42,677 ) (130,234 ) (230,050 ) (549,140 ) Total 18,840 281,364 (76,416 ) 189,213
Reconciliation of Income Taxes Benefit (Loss) Computed at Statutory Tax Rate to Income Tax Expenses	Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Income before tax 1,784,890 1,083,093 1,521,067 4,997 Provision for income taxes at applicable income tax rate 399,114 226,097 312,941 (80,869 ) Effect of preferential tax rate 37,545 (190,789 ) 31,250 (213,923 ) R&D expenses eligible for super deduction (555,607 ) (71,605 ) (555,607 ) (71,605 ) Non-deductible expenses 11,947 62,353 26,901 80,491 Change in valuation allowance 125,841 255,308 108,099 475,119 Effective enterprise income tax 18,840 281,364 (76,416 ) 189,213
Schedule of Deferred Tax Assets	June 30, December 31, 2015 2014 (Unaudited) $ $ Tax loss carry-forward 3,899,194 3,798,290 Allowance for doubtful receivables 111,953 111,637 Allowance for inventory obsolescence 222,571 138,458 Difference for sales cut-off 43,093 20,572 Deferred income 283,570 283,111 Property, plant and equipment subsidized by government grant 99,801 100,901 Total gross deferred tax assets 4,660,182 4,452,969 Valuation allowance (2,779,772 ) (2,805,785 ) Total net deferred tax assets 1,880,410 1,647,184

Short-term loans (Tables)

Short-term loans (Tables)	6 Months Ended
	Jun. 30, 2015
Short-term loans [Abstract]
Schedule of Short-Term Loans	June 30, December 31, 2015 2014 (Unaudited) $ $ Short- term bank loans guaranteed and repayable within one year 9,147,609 15,195,040

Lines of credit (Tables)

Lines of credit (Tables)	6 Months Ended
	Jun. 30, 2015
Lines of credit [Abstract]
Schedule of Lines of Credit	June 30, 2015 (Unaudited) Lender Starting date Maturity date Line of credit Unused line of credit $ $ Bank of China 7/23/2014 7/23/2015 3,971,564 84,262 Ping An Bank Co., Ltd 10/20/2014 10/19/2015 11,447,448 6,887,767 Shenzhen Baoan Guiyin County Bank 11/19/2014 11/18/2015 , 4,742,514 3,156,055 Industrial and Commercial Bank of China 7/26/2012 7/25/2015 6,541,399 2,453,025 Industrial Bank Co., Ltd 10/23/2014 10/23/2015 6,541,399 5,664,022 Jiang Su Bank Co., Ltd 10/28/2014 9/11/2015 7,547,768 1,629,595 China Everbright Bank Co., Ltd 6/23/2015 6/22/2016 8,176,748 4,411,743 Total 48,968,840 24,286,469 (i) The lines of credit from these banks are terminated at maturity dates. December 31, 2014 Lender Starting date Maturity date Line of credit Unused line of credit $ $ Bank of China 3/10/2014 3/10/2015 12,653,474 424,823 Bank of China 7/23/2014 7/23/2015 3,965,144 67,516 Ping An Bank Co., Ltd 10/20/2014 10/19/2015 11,428,945 295,818 China Minsheng Banking Corp., LTD 5/22/2014 5/22/2015 3,265,413 - Shenzhen Baoan Guiyin County Bank 11/19/2014 11/18/2015 4,734,848 1,750,151 Industrial and Commercial Bank of China 7/26/2012 7/25/2015 6,530,826 3,918,496 China Citic Bank 6/25/2014 6/25/2015 8,046,910 6,788,093 Industrial Bank Co., Ltd 10/23/2014 10/23/2015 6,530,825 4,430,636 Jiang Su Bank Co., Ltd 10/28/2014 9/11/2015 4,898,119 4,898,119 Total 62,054,504 22,573,652 (ii) The lines of credit from Bank of China matured at maturity date. No renewal agreement was signed after maturity date.

Long-term loans (Tables)

Long-term loans (Tables)	6 Months Ended
	Jun. 30, 2015
Long-term loans [Abstract]
Schedule of Long-Term Debt	June 30, December 31, 2015 2014 (Unaudited) $ $ Long term loans from Bank of China 2,943,629 3,918,495 Less: current portion of long-term borrowings 1,962,420 1,959,248 Long- term bank loans, net of current portion 981,209 1,959,247
Schedule of Maturities of Long-Term Loans	$ Remaining 2015 981,209 2016 1,962,420 2,943,629

Share-based Compensation (Table

Share-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Schedule of Share-Based Compensation	Options Granted to Employees Number of Shares Weighted Average Exercise Price Remaining Contractual Term in Years $ Outstanding, January 1, 2014 1,105,000 2.87 8.51 Granted - - - Exercised (200,000 ) 2.41 - Forfeited (44,714 ) 2.63 - Canceled (100,000 ) 3.55 - Outstanding, December 31, 2014 760,286 2.92 7.78 Exercisable, December 31, 2014 413,620 3.16 6.98 Vested and expected to vest, December 31, 2014 702,788 2.94 7.71 Number of Shares Weighted Average Exercise Price Remaining Contractual Term in Years $ Outstanding, January 1, 2015 760,286 2.92 7.78 Granted 75,000 4.43 - Exercised (16,933 ) 2.63 - Forfeited (8,564 ) 2.63 - Canceled - - - Outstanding, June 30, 2015 809,789 3.06 7.49 Exercisable, June 30, 2015 451,658 3.32 6.82 Vested and expected to vest, June 30, 2015 745,678 3.09 7.41
Schedule of Restricted Stock and RSA Award Activities	Number of Shares Weighted Average Exercise Price Remaining Contractual Term in Years $ Outstanding, January 1, 2015 98,400 2.81 0.77 Granted - - - Exercised - - - Forfeited - - - Outstanding, June 30, 2015 98,400 2.81 0.27 Expected to vest, June 30, 2015 85,386 2.81 0.27
Schedule of Fair Value of Options Granted, Weighted-Average Assumptions	Six months Ended 2015 2014 Expected volatility N/A 83.62 % Risk-free interest rate N/A 1.64 % Expected term from grant date (in years) N/A 4.75 Dividend rate N/A - Fair value N/A $ 2.02

Earnings per share (Tables)

Earnings per share (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings per share [Abstract]
Computation of Basic and Diluted Earnings Per Common Share	Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Numerator: Net income (loss) attributable to the Company 1,867,124 812,498 1,743,766 (122,651 ) Denominator: Weighted-average shares outstanding - Basic 15,094,979 14,853,219 15,091,639 14,415,662 - Diluted 15,441,576 15,277,743 15,469,274 14,415,662 Income (loss) per common share - Basic 0.12 0.05 0.12 (0.01 ) - Diluted 0.12 0.05 0.11 (0.01 )

Securities Offering Transacti48

Securities Offering Transaction (Tables)	6 Months Ended
	Jun. 30, 2015
Securities Offering Transaction [Abstract]
Schedule of Fair Values of Warrants	April 17,2014 Expected volatility 85.76 % Risk-free interest rate 0.9 % Expected term (in years) 3.0 Dividend rate - Fair value $ 2.3 June 30,2015 December 31,2014 Expected volatility 86.32 % 86.4 % Risk-free interest rate 0.57 % 0.79 % Expected term (in years) 1.79 2.29 Dividend rate - - Fair value $ 1.27 $ 2.14

Commitments and contingencies (

Commitments and contingencies (Tables)	6 Months Ended
	Jun. 30, 2015
Commitments and contingencies [Abstract]
Schedule of Minimum Future Commitments for Operating Leases	$ Within one year 848,746 One to two years 1,783,158 Two to three years 695,915 Three to four years 360,047 Four to five years 360,047 More than five years 2,280,298 6,328,211

Segment information (Tables)

Segment information (Tables)	6 Months Ended
	Jun. 30, 2015
Segment information [Abstract]
Schedule of Information by Segments	Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Net sales Ni-MH Batteries 15,775,426 19,153,435 30,534,896 34,640,938 Lithium Batteries 22,066,302 17,511,963 38,886,930 30,902,207 New Materials 794,073 1,469,238 1,351,623 1,751,805 Total 38,635,801 38,134,636 70,773,449 67,294,950 Cost of Sales Ni-MH Batteries 11,850,483 15,224,391 23,565,936 27,514,189 Lithium Batteries 17,307,091 13,877,599 31,640,483 24,580,425 New Materials 914,467 1,303,155 1,447,556 1,539,900 Total 30,072,041 30,405,145 56,653,975 53,634,514 Gross Profit Ni-MH Batteries 3,924,943 3,929,044 6,968,960 7,126,749 Lithium Batteries 4,759,211 3,634,364 7,246,447 6,321,782 New Materials (120,394 ) 166,083 (95,933 ) 211,905 Total 8,563,760 7,729,491 14,119,474 13,660,436 June 30, 2015 December 31, 2014 (Unaudited) $ $ Total Assets Ni-MH Batteries 45,677,975 50,275,286 Lithium Batteries 85,734,415 86,339,973 New Materials 11,020,973 9,538,813 Total 142,433,363 146,154,072
Schedule of Geographic Information about Revenues	Three months ended June 30, Six months ended 2015 2014 2015 2014 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Net sales China Mainland 19,290,058 19,913,436 33,315,390 34,426,658 Asia, others 11,637,753 8,681,760 22,079,640 14,264,126 Europe 5,749,314 7,053,769 11,565,500 13,443,062 North America 1,783,947 2,254,835 3,340,558 4,597,142 South America 147,644 76,320 301,573 201,701 Africa - 77,365 103,807 237,144 Others 27,085 77,151 66,981 125,117 38,635,801 38,134,636 70,773,449 67,294,950
Schedule of Geographic Information about Accounts Receivable	June 30, 2015 December 31, 2014 (Unaudited) $ $ Accounts receivable China Mainland 18,359,292 17,282,481 Asia, others 9,598,895 8,662,503 Europe 4,831,683 5,747,058 North America 77,961 296,572 South America 221,854 211,391 Africa 41,940 81,962 Others 16,535 34,640 33,148,160 32,316,607

Organization and basis of pre51

Organization and basis of presentation (Narrative) (Details)	1 Months Ended	6 Months Ended
	Apr. 30, 2014USD ($)$ / sharesshares	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)	Nov. 13, 2014USD ($)	Nov. 13, 2014CNY (¥)	Dec. 31, 2013USD ($)	Dec. 31, 2013CNY (¥)	May. 15, 2013USD ($)	May. 15, 2013CNY (¥)	Feb. 08, 2012USD ($)	Feb. 08, 2012CNY (¥)
Subsidiary or Equity Method Investee [Line Items]
Additional paid-in capital		$ 10,987,266		$ 10,530,430
Class of Stock [Line Items]
Shares issued to investors | shares	1,000,000
Number of shares covered by warrants | shares	500,000
Shares issued, price per share | $ / shares	$ 5.05
Aggregate proceeds	$ 5,050,000
Shares covered by each warrant | shares	0.50
Proceeds from issuance of capital stock, net	$ 4,633,164		$ 4,633,164
Ganzhou Highpower Technology Co., Ltd ("GZ Highpower") [Member]
Subsidiary or Equity Method Investee [Line Items]
Attributable equity interest held		70.00%		70.00%			60.00%	60.00%	60.00%	60.00%
Equity interest held by partner				30.00%			40.00%	40.00%	40.00%	40.00%
Additional paid-in capital					$ 6,530,825	¥ 40,000,000	$ 4,898,119	¥ 30,000,000	$ 4,807,847	¥ 30,000,000	$ 2,381,293	¥ 15,000,000
Ganzhou Highpower Technology Co., Ltd ("GZ Highpower") [Member] | Shenzhen Highpower Technology Company Limited [Member]
Subsidiary or Equity Method Investee [Line Items]
Additional paid-in capital | ¥						¥ 10,000,000

Organization and basis of pre52

Organization and basis of presentation (Schedule of Subsidiaries and Principle Activities) (Details)	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013	May. 15, 2013
Hong Kong Highpower Technology Co., Ltd ("HKHTC") [Member]
Subsidiary or Equity Method Investee [Line Items]
Date of incorporation	Jul. 4, 2003
Attributable equity interest held	100.00%
Shenzhen Highpower Technology Co., Ltd ("SZ Highpower") [Member]
Subsidiary or Equity Method Investee [Line Items]
Date of incorporation	Oct. 8, 2002
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	Jan. 29, 2008
Attributable equity interest held	100.00%
Springpower Technology (Shenzhen) Co., Ltd ("SZ Springpower") [Member]
Subsidiary or Equity Method Investee [Line Items]
Date of incorporation	Jun. 4, 2008
Attributable equity interest held	100.00%
Ganzhou Highpower Technology Co., Ltd ("GZ Highpower") [Member]
Subsidiary or Equity Method Investee [Line Items]
Date of incorporation	Sep. 21, 2010
Attributable equity interest held	70.00%	70.00%	60.00%	60.00%
Icon Energy System Co., Ltd. ("ICON") [Member]
Subsidiary or Equity Method Investee [Line Items]
Date of incorporation	Feb. 23, 2011
Attributable equity interest held	100.00%
Huizhou Highpower Technology Co., Ltd ("HZ HTC") [Member]
Subsidiary or Equity Method Investee [Line Items]
Date of incorporation	Mar. 8, 2012
Attributable equity interest held	100.00%

Summary of significant accoun53

Summary of significant accounting policies (Narrative) (Details)	6 Months Ended
	Jun. 30, 2015USD ($)segments	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Deferred Revenue
Deferred income	$ 1,890,464		$ 1,887,409
Government grants recognized as other income	221,483	$ 180,923
Shipping and handling
Shipping and handling expenses	$ 484,903	$ 413,112
Segment Reporting
Number of reportable segments | segments	3

Summary of significant accoun54

Summary of significant accounting policies (Schedule of Depreciation Rates of Plant and Equipment) (Details)	6 Months Ended
	Jun. 30, 2015
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	5.00%
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 ($)	Jun. 30, 2015	Dec. 31, 2014
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 12,826,121	$ 15,396,827
Securities for Bank Acceptance Bill [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	11,028,827	10,689,297
Time Deposits [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 1,797,294	$ 4,707,530

Accounts receivable, net (Sched

Accounts receivable, net (Schedule of Accounts Receivable) (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Accounts receivable, net [Abstract]
Accounts receivable	$ 35,651,499	$ 34,816,914
Less: allowance for doubtful debts	2,503,339	2,500,307
Accounts receivable, net	$ 33,148,160	$ 32,316,607

Accounts receivable, net (Narra

Accounts receivable, net (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accounts receivable, net [Abstract]
Allowance for doubtful accounts	$ 877	$ 266	$ 896	$ 266
Accounts receivable written off				$ 2,951

Prepayments (Details)

Prepayments (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Prepayments [Abstract]
Purchase deposits paid	$ 2,683,479	$ 1,793,599
Value-added tax prepayment	1,170,499	384,008
Rental deposit	266,973	266,556
Deferred insurance fee	204,890	97,005
Advances to staff for operations	185,302	122,452
Other deposits and prepayments	1,076,535	619,900
Total prepayments	$ 5,587,678	$ 3,283,520

Other receivables (Details)

Other receivables (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Other receivables [Abstract]
Compensation receivable for land occupation	$ 517,255	$ 516,418
Others	195,411	149,410
Total Other receivables	$ 712,666	$ 665,828

Inventories (Details)

Inventories (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Inventories [Abstract]
Raw materials	$ 5,378,464	$ 4,341,675
Work in progress	5,506,411	3,949,778
Finished goods	14,403,742	13,685,166
Packing materials	23,558	20,137
Consumables	387,630	271,313
Inventories	25,699,805	22,268,069
Inventory reserves	$ 1,169,186	$ 777,638

Property, plant and equipment61

Property, plant and equipment (Schedule of Plant and Equipment) (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Cost
Construction in progress	$ 1,155,430	$ 715,821
Furniture, fixtures and office equipment	4,002,756	3,754,990
Leasehold improvement	4,264,250	3,763,290
Machinery and equipment	30,406,838	28,180,306
Motor vehicles	1,587,842	1,479,921
Building	25,337,786	25,414,914
Property, plant and equipment, cost	66,754,902	63,309,242
Less: accumulated depreciation	15,025,580	12,871,524
Property, plant and equipment, net	$ 51,729,322	$ 50,437,718

Property, plant and equipment62

Property, plant and equipment (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation expenses	$ 1,252,756	$ 1,009,036	$ 2,462,008	$ 1,979,893
Deductions for government grants					$ 672,675
Building pledged as collateral	10,461,665		10,461,665
Huizhou Facilities [Member]
Property, Plant and Equipment [Line Items]
Building pledged as collateral	10,461,665		10,461,665		$ 10,573,369
Ganzhou Facilities [Member]
Property, Plant and Equipment [Line Items]
Building pledged as collateral	$ 2,874,363		$ 2,874,363

Land use rights, net (Schedule

Land use rights, net (Schedule of Land Use Rights) (Details)	6 Months Ended
	Jun. 30, 2015USD ($)m²	Dec. 31, 2014USD ($)
Finite-Lived Intangible Assets [Line Items]
Net	$ 4,263,472	$ 4,305,317
Land Use Right [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	4,881,541	4,873,650
Accumulated amortization	(618,069)	(568,333)
Net	$ 4,263,472	4,305,317
Lease terms of land use rights	50 years
Land Use Right, Land Located in Huizhou [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	$ 3,511,597	3,505,921
Area of land | m²	126,605
Land rights expiry date	May 23, 2057
Land Use Right Land, Located in Ganzhou [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	$ 1,369,944	$ 1,367,729
Area of land | m²	58,669
Land rights expiry date	Jan. 4, 2062

Land use rights, net (Amortizat

Land use rights, net (Amortization Disclosures) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Estimated amortization for the coming years is as follows
Net	$ 4,263,472		$ 4,263,472		$ 4,305,317
Land Use Right [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expenses	24,397	$ 20,149	48,688	$ 48,593
Estimated amortization for the coming years is as follows
Remaining 2,015	48,815		48,815
2,016	97,631		97,631
2,017	97,631		97,631
2,018	97,631		97,631
2,019	97,631		97,631
2020 and thereafter	3,824,133		3,824,133
Net	$ 4,263,472		$ 4,263,472		$ 4,305,317

Intangible asset (Details)

Intangible asset (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Intangible asset, net	$ 575,000		$ 575,000		$ 600,000
Consumer Battery License Fee [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	1,000,000		1,000,000		1,000,000
Accumulated amortization	(425,000)		(425,000)		(400,000)
Intangible asset, net	575,000		$ 575,000		$ 600,000
Consumer battery license fee			20 years
Amortization expenses	12,500	$ 12,500	$ 25,000	$ 25,000
Proprietary Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	$ 0		$ 0

Other payables and accrued li66

Other payables and accrued liabilities (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Other payables and accrued liabilities [Abstract]
Accrued expenses	$ 4,338,892	$ 3,649,806
Royalty payable	492,252	580,032
VAT payable	262,539	405,859
Sales deposits received	791,170	911,947
Other payables	337,690	348,903
Other payables and accrued liabilities	$ 6,222,543	$ 5,896,547

Taxation (Components of Provisi

Taxation (Components of Provision for Income Taxes Expenses) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Taxation [Abstract]
Current	$ 61,517	$ 411,598	$ 153,634	$ 738,353
Deferred	(42,677)	(130,234)	(230,050)	(549,140)
Effective enterprise income tax	$ 18,840	$ 281,364	$ (76,416)	$ 189,213

Taxation (Reconciliation of Inc

Taxation (Reconciliation of Income Tax Expense Computed at Statutory Tax Rate to Income Tax Expenses) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Taxation [Abstract]
Income before tax	$ 1,784,890	$ 1,083,093	$ 1,521,067	$ 4,997
Provision for income taxes at applicable income tax rate	399,114	226,097	312,941	(80,869)
Effect of preferential tax rate	37,545	(190,789)	31,250	(213,923)
R&D expenses eligible for super deduction	(555,607)	(71,605)	(555,607)	(71,605)
Non-deductible expenses	11,947	62,353	26,901	80,491
Change in valuation allowance	125,841	255,308	108,099	475,119
Effective enterprise income tax	$ 18,840	$ 281,364	$ (76,416)	$ 189,213

Taxation (Schedule of Tax Effec

Taxation (Schedule of Tax Effect of Each Major Type of Temporary Difference) (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Taxation [Abstract]
Tax loss carry-forward	$ 3,899,194	$ 3,798,290
Allowance for doubtful receivables	111,953	111,637
Allowance for inventory obsolescence	222,571	138,458
Difference for sales cut-off	43,093	20,572
Deferred income	283,570	283,111
Property, plant and equipment subsidized by government grant	99,801	100,901
Total gross deferred tax assets	4,660,182	4,452,969
Valuation allowance	(2,779,772)	(2,805,785)
Total net deferred tax assets	$ 1,880,410	$ 1,647,184

Notes payable (Details)

Notes payable (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Notes payable [Abstract]
Outstanding notes payable	$ 33,079,560	$ 29,380,782
Trade acceptances to suppliers	179,888	$ 522,466
Receivables pledged as collateral for debt	$ 1,141,861

Short-term loans (Details)

Short-term loans (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Short-term Debt [Line Items]
Guaranteed and repayable within one year short-term bank loans	$ 9,147,609		$ 9,147,609		$ 15,195,040
Building pledged as collateral	10,461,665		10,461,665
Receivables pledged as collateral for debt	1,141,861		1,141,861
Interest expenses	$ 218,142	$ 377,796	419,156	$ 869,559
Short-term Debt [Member]
Short-term Debt [Line Items]
Land use right pledged as collateral			$ 2,984,858
Minimum interest rate			6.00%
Maximum interest rate			6.72%

Lines of credit (Details)

Lines of credit (Details) - USD ($)		6 Months Ended		12 Months Ended
		Jun. 30, 2015		Dec. 31, 2014
Line of Credit Facility [Line Items]
Line of credit		$ 48,968,840		$ 62,054,504
Unused line of credit		$ 24,286,469		$ 22,573,652
Debt covenant, percentage of total net assets		20.00%
Bank of China [Member]
Line of Credit Facility [Line Items]
Starting date	[1]			Mar. 10, 2014
Maturity date	[1]			Mar. 10, 2015
Line of credit	[1]			$ 12,653,474
Unused line of credit	[1]			$ 424,823
Bank of China [Member]
Line of Credit Facility [Line Items]
Starting date		Jul. 23, 2014	[2]	Jul. 23, 2014
Maturity date		Jul. 23, 2015	[2]	Jul. 23, 2015
Line of credit		$ 3,971,564	[2]	$ 3,965,144
Unused line of credit		$ 84,262	[2]	$ 67,516
Ping An Bank Co., Ltd [Member]
Line of Credit Facility [Line Items]
Starting date		Oct. 20, 2014		Oct. 20, 2014
Maturity date		Oct. 19, 2015		Oct. 19, 2015
Line of credit		$ 11,447,448		$ 11,428,945
Unused line of credit		$ 6,887,767		$ 295,818
China Minsheng Banking Corp., LTD [Member]
Line of Credit Facility [Line Items]
Starting date				May 22, 2014
Maturity date				May 22, 2015
Line of credit				$ 3,265,413
Unused line of credit
Shenzhen Baoan Guiyin County Bank [Member]
Line of Credit Facility [Line Items]
Starting date		Nov. 19, 2014		Nov. 19, 2014
Maturity date		Nov. 18, 2015		Nov. 18, 2015
Line of credit		$ 4,742,514		$ 4,734,848
Unused line of credit		$ 3,156,055		$ 1,750,151
Industrial and Commercial Bank of China [Member]
Line of Credit Facility [Line Items]
Starting date		Jul. 26, 2012	[2]	Jul. 26, 2012
Maturity date		Jul. 25, 2015	[2]	Jul. 25, 2015
Line of credit		$ 6,541,399	[2]	$ 6,530,826
Unused line of credit		$ 2,453,025	[2]	$ 3,918,496
China Citic Bank [Member]
Line of Credit Facility [Line Items]
Starting date				Jun. 25, 2014
Maturity date				Jun. 25, 2015
Line of credit				$ 8,046,910
Unused line of credit				$ 6,788,093
Industrial Bank Co., LTD [Member]
Line of Credit Facility [Line Items]
Starting date		Oct. 23, 2014		Oct. 23, 2014
Maturity date		Oct. 23, 2015		Oct. 23, 2015
Line of credit		$ 6,541,399		$ 6,530,825
Unused line of credit		$ 5,664,022		$ 4,430,636
Jiang Su Bank Co., LTD [Member]
Line of Credit Facility [Line Items]
Starting date		Oct. 28, 2014		Oct. 28, 2014
Maturity date		Sep. 11, 2015		Sep. 11, 2015
Line of credit		$ 7,547,768		$ 4,898,119
Unused line of credit		$ 1,629,595		$ 4,898,119
China Everbright Bank [Member]
Line of Credit Facility [Line Items]
Starting date		Jun. 23, 2015
Maturity date		Jun. 22, 2016
Line of credit		$ 8,176,748
Unused line of credit		$ 4,411,743
[1]	The lines of credit from Bank of China matured at maturity date. No renewal agreement was signed after maturity date.
[2]	The lines of credit from these banks are terminated at maturity dates.

Long-term loans (Details)

Long-term loans (Details) ¥ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015CNY (¥)	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
Less: current portion of long-term borrowings	$ 1,962,420		$ 1,962,420			$ 1,959,248
Long-term bank loans, net of current portion	981,209		$ 981,209			1,959,247
Bank Of China [Member]
Debt Instrument [Line Items]
Long term loan term			5 years
Long-term loans, face amount	8,198,065		$ 8,198,065		¥ 50
Debt instrument frequency of payment			Quarterly
Long term loans from Bank of China	2,943,629		$ 2,943,629			3,918,495
Less: current portion of long-term borrowings	1,962,420		1,962,420			1,959,248
Long-term bank loans, net of current portion	$ 981,209		$ 981,209			$ 1,959,247
Stated interest rate	5.775%		5.775%		5.775%
Interest rate multiple	110.00%		110.00%		110.00%
Interest on long-term loans	$ 57,334	$ 96,366	$ 124,962	$ 199,984
Percent of principle to be paid in prior year			2.00%
Percent of principle to be paid in subsequent periods			6.00%
Repayment schedule of the principal:
Remaining 2,015	981,209		$ 981,209
2,016	$ 1,962,420		$ 1,962,420

Share-based Compensation (Narra

Share-based Compensation (Narrative) (Details) - USD ($)	Jan. 17, 2014	Apr. 30, 2014	Aug. 15, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation expense				$ 600,000		$ 600,000
Weighted-average recognition period						1 year 5 months 12 days
Share-based compensation						$ 412,304	$ 916,244
Shares issued to consultants		40,000	150,000
Fair market value of shares issued			$ 171,000
Compensation expense related to shares issued		$ 94,982
Share-based Goods and Nonemployee Services Transaction, Shares Approved for Issuance			150,000
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options exercised					74,052
Stock Options Related to Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options vested and expected to vest				$ 600,000	$ 1,640,000	$ 600,000	1,640,000
Common stock shares granted				75,000		75,000
Exercise price of options granted						$ 4.43
Options forfeited					15,549	8,564		44,714
Share-based compensation				$ 290,943	$ 169,365	$ 412,304	$ 394,645
Number of options exercised					160,000	16,933		200,000
Stock Options Related to Employees [Member] | Vested [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options forfeited						3,670
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted									246,000
Restricted Stock Awards [Member] | Vesting Immediately [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage									30.00%
Restricted Stock Awards [Member] | First Anniversary of Grant Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage									30.00%
Restricted Stock Awards [Member] | Second Anniversary of Grant Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage									40.00%
Warrant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incentive plan term	5 years
Shares issued to consultants	200,000
Fair market value of shares issued	$ 390,000
Non Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of options granted							$ 2.02
Share-based compensation					$ 345,933		$ 521,599
2008 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for issuance				626,714		626,714
Incentive plan term						10 years
Common stock reserved for issuance				2,000,000		2,000,000
2008 Omnibus Incentive Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for plan						3 years
2008 Omnibus Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for plan						5 years

Share-based Compensation (Sched

Share-based Compensation (Schedule of Share-Based Compensation Related to Employees) (Details) - Stock Options Related to Employees [Member] - $ / shares	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Number of Shares
Outstanding, beginning balance			760,286	1,105,000
Granted	75,000		75,000
Exercised		(160,000)	(16,933)	(200,000)
Forfeited		(15,549)	(8,564)	(44,714)
Canceled				(100,000)
Outstanding, ending balance	809,789		809,789	760,286	1,105,000
Exercisable, ending balance	451,658		451,658	413,620
Vested and expected to vest, ending balance	745,678		745,678	702,788
Weighted Average Exercise Price
Outstanding, beginning balance			$ 2.92	$ 2.87
Granted			4.43
Exercised			2.63	$ 2.41
Forfeited			$ 2.63	2.63
Canceled				3.55
Outstanding, ending balance	$ 3.06		$ 3.06	2.92	$ 2.87
Exercisable, ending balance	3.32		3.32	3.16
Vested and expected to vest, ending balance	$ 3.09		$ 3.09	$ 2.94
Remaining Contractual Term in Years
Outstanding			7 years 5 months 26 days	7 years 9 months 11 days	8 years 6 months 4 days
Exercisable, ending balance			6 years 9 months 25 days	6 years 11 months 23 days
Vested and expected to vest, ending balance			7 years 4 months 28 days	7 years 8 months 16 days

Share-based Compensation (Sch76

Share-based Compensation (Schedule of Restricted Stock Awards) (Details) - Restricted Stock [Member] - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Number of Shares
Outstanding, beginning balance	98,400
Granted			246,000
Exercised
Forfeited
Outstanding, ending balance	98,400	98,400
Expected to vest	85,386
Weighted Average Grant Date Fair Value
Outstanding, beginning balance	$ 2.81
Granted
Exercised
Forfeited
Outstanding, ending balance	$ 2.81	$ 2.81
Expected to vest	$ 2.81
Remaining Contractual Term in Years
Outstanding	3 months 7 days	9 months 7 days
Expected to vest	3 months 7 days

Share-based Compensation (Sch77

Share-based Compensation (Schedule of Assumptions Used, Related to Non-Employees) (Details) - Non Employee Stock Option [Member] - $ / shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Weighted Average Assumptions for Fair Values of Stock Options
Expected volatility		83.62%
Risk-free interest rate		1.64%
Expected term from grant date (in years)		4 years 9 months
Dividend rate
Fair value		$ 2.02

Earnings per share (Details)

Earnings per share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Numerator:
Net income (loss) attributable to the Company	$ 1,867,124	$ 812,498	$ 1,743,766	$ (122,651)
Denominator:
- Basic	15,094,979	14,853,219	15,091,639	14,415,662
- Diluted	15,441,576	15,277,743	15,469,274	14,415,662
- Basic	$ 0.12	$ 0.05	$ 0.12	$ (0.01)
- Diluted	$ 0.12	$ 0.05	$ 0.11	$ (0.01)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation				1,669,452
Stock options with a dilutive effect	1,641,723	1,669,452	1,641,723	1,669,452
Total dilutive effect	346,597	424,524	377,635

Securities Offering Transacti79

Securities Offering Transaction (Details) - USD ($)	Apr. 17, 2014	Apr. 30, 2014	Aug. 15, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
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		0.50
Proceeds from issuance of capital stock, net		$ 4,633,164					$ 4,633,164
Warrant exercise price		$ 6.33
Warrant Liability		$ 1,173,952		$ 636,542		$ 636,542		$ 1,067,674
Value of shares issued		$ 3,459,212
Gain on change of fair value of warrant liability				$ 84,833	$ 74,548	$ 431,132	$ 74,548
Warrants issued to investment banker		40,000	150,000
Share-based compensation to investment banker		$ 94,982
Investor Warrants [Member]
Class of Stock [Line Items]
Expected volatility	85.76%					86.32%		86.40%
Risk-free interest rate	0.90%					0.57%		0.79%
Expected term (in years)	3 years					1 year 9 months 14 days		2 years 3 months 14 days
Dividend rate
Fair value	$ 2.3					$ 1.27		$ 2.14
Banker Warrants [Member]
Class of Stock [Line Items]
Warrant exercise price	$ 6.33

Defined contribution plan (Deta

Defined contribution plan (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Defined contribution plan [Abstract]
Contributions to employee benefits plan	$ 414,201	$ 343,804	$ 826,889	$ 703,703

Non-controlling interest (Detai

Non-controlling interest (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Dec. 31, 2014CNY (¥)	Dec. 31, 2014USD ($)	Nov. 13, 2014USD ($)	Nov. 13, 2014CNY (¥)	Dec. 31, 2013USD ($)	Dec. 31, 2013CNY (¥)	May. 15, 2013USD ($)	May. 15, 2013CNY (¥)	Feb. 08, 2012USD ($)	Feb. 08, 2012CNY (¥)
Subsidiary or Equity Method Investee [Line Items]
Additional paid-in capital	$ 10,987,266		$ 10,987,266			$ 10,530,430
Non-controlling interest	1,162,690		1,162,690			1,307,239
Net income (loss) attributable to non-controlling interest	101,074	$ 10,769	146,283	$ 61,565
Ganzhou Highpower Technology Company Limited [Member]
Subsidiary or Equity Method Investee [Line Items]
Additional paid-in capital							$ 6,530,825	¥ 40,000,000	$ 4,898,119	¥ 30,000,000	$ 4,807,847	¥ 30,000,000	$ 2,381,293	¥ 15,000,000
Non-controlling interest	1,162,690		1,162,690			$ 1,307,239
Net income (loss) attributable to non-controlling interest	$ 101,074	$ 10,769	$ 146,283	$ 61,565
Attributable equity interest held	70.00%		70.00%			70.00%			60.00%	60.00%	60.00%	60.00%
Equity interest held by partner						30.00%			40.00%	40.00%	40.00%	40.00%
Ganzhou Highpower Technology Company Limited [Member] | Shenzhen Highpower Technology Company Limited [Member]
Subsidiary or Equity Method Investee [Line Items]
Additional paid-in capital | ¥								¥ 10,000,000
Cash proceeds from contribution | ¥					¥ 10,000,000

Commitments and contingencies82

Commitments and contingencies (Schedule of Minimum Future Commitments for Operating Leases) (Details)	Jun. 30, 2015USD ($)
Commitments and contingencies [Abstract]
Within one year	$ 848,746
One to two years	1,783,158
Two to three years	695,915
Three to four years	360,047
Four to five years	360,047
More than five years	2,280,298
Total minimum future commitments	$ 6,328,211

Commitments and contingencies83

Commitments and contingencies (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Commitments and contingencies [Abstract]
Rent expenses	$ 415,254	$ 404,641	$ 819,448	$ 792,321
Minimum [Member]
Commitments and Contingencies Disclosure [Line Items]
Lease expiration year			2,015
Maximum [Member]
Commitments and Contingencies Disclosure [Line Items]
Lease expiration year			2,026

Segment information (Schedule o

Segment information (Schedule of Segment Information about Revenues) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Net sales	$ 38,635,801	$ 38,134,636	$ 70,773,449	$ 67,294,950
Cost of Sales	30,072,041	30,405,145	56,653,975	53,634,514
Gross profit	8,563,760	7,729,491	14,119,474	13,660,436
Ni-MH Batteries [Member]
Segment Reporting Information [Line Items]
Net sales	15,775,426	19,153,435	30,534,896	34,640,938
Cost of Sales	11,850,483	15,224,391	23,565,936	27,514,189
Gross profit	3,924,943	3,929,044	6,968,960	7,126,749
Lithium Batteries [Member]
Segment Reporting Information [Line Items]
Net sales	22,066,302	17,511,963	38,886,930	30,902,207
Cost of Sales	17,307,091	13,877,599	31,640,483	24,580,425
Gross profit	4,759,211	3,634,364	7,246,447	6,321,782
New Materials [Member]
Segment Reporting Information [Line Items]
Net sales	794,073	1,469,238	1,351,623	1,751,805
Cost of Sales	914,467	1,303,155	1,447,556	1,539,900
Gross profit	$ (120,394)	$ 166,083	$ (95,933)	$ 211,905

Segment information (Schedule85

Segment information (Schedule of Segment Information about Total Assets) (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Total Assets	$ 142,433,363	$ 146,154,072
Ni-MH Batteries [Member]
Segment Reporting Information [Line Items]
Total Assets	45,677,975	50,275,286
Lithium Batteries [Member]
Segment Reporting Information [Line Items]
Total Assets	85,734,415	86,339,973
New Materials [Member]
Segment Reporting Information [Line Items]
Total Assets	$ 11,020,973	$ 9,538,813

Segment information (Schedule86

Segment information (Schedule of Geographic Information about Revenues) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 38,635,801	$ 38,134,636	$ 70,773,449	$ 67,294,950
China Mainland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	19,290,058	19,913,436	33,315,390	34,426,658
Asia, others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	11,637,753	8,681,760	22,079,640	14,264,126
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	5,749,314	7,053,769	11,565,500	13,443,062
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	1,783,947	2,254,835	3,340,558	4,597,142
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	147,644	76,320	301,573	201,701
Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		77,365	103,807	237,144
Others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 27,085	$ 77,151	$ 66,981	$ 125,117

Segment information (Schedule87

Segment information (Schedule of Geographic Information about Accounts Receivable) (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	$ 33,148,160	$ 32,316,607
China Mainland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	18,359,292	17,282,481
Asia, others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	9,598,895	8,662,503
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	4,831,683	5,747,058
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	77,961	296,572
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	221,854	211,391
Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	41,940	81,962
Others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	$ 16,535	$ 34,640