Highpower International (HPJ) 10-Q 10 Aug 17 2017 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Aug. 10, 2017
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Entity Registrant Name	Highpower International, Inc.
Entity Central Index Key	1,368,308
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Trading Symbol	HPJ
Entity Common Stock, Shares Outstanding		15,358,676

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Current Assets:
Cash	$ 19,325,657	$ 9,324,393
Restricted cash	15,918,318	11,213,640
Accounts receivable, net	42,737,207	46,280,769
Amount due from Yipeng	2,465,325	7,517,250
Notes receivable	2,192,197	1,093,730
Prepayments and other receivables	10,922,029	6,899,872
Inventories	32,488,267	22,207,333
Total Current Assets	126,049,000	104,536,987
Property, plant and equipment, net	46,167,556	43,504,991
Land use right, net	3,670,645	3,622,435
Other assets	475,000	500,000
Deferred tax assets	1,248,226	1,477,761
Long-term investment	10,540,473	9,689,576
TOTAL ASSETS	188,150,900	163,331,750
Current Liabilities:
Accounts payable	49,132,387	49,463,901
Deferred income	892,154	761,491
Short-term loans	19,329,517	18,776,080
Non-financial institution borrowings	11,804,285	3,741,115
Notes payable	41,373,724	30,658,000
Amount due to Yipeng	62,204	1,522,313
Other payables and accrued liabilities	9,249,029	11,148,556
Income taxes payable	1,782,786	1,963,298
Total Current Liabilities	133,626,086	118,034,754
Warrant Liability	0	259
TOTAL LIABILITIES	133,626,086	118,035,013
COMMITMENTS AND CONTINGENCIES
Stockholders' equity
Preferred stock (Par value: $0.0001, Authorized: 10,000,000 shares, Issued and outstanding: none)	0	0
Common stock (Par value: $0.0001, Authorized: 100,000,000 shares, 15,356,560 shares issued and outstanding at June 30, 2017 and 15,114,991 shares issued and outstanding at December 31, 2016)	1,536	1,511
Additional paid-in capital	12,249,531	11,580,934
Statutory and other reserves	4,992,463	4,992,463
Retained earnings	36,172,954	29,266,068
Accumulated other comprehensive income (loss)	600,641	(873,582)
Total equity attributable to the stockholders of Highpower International Inc.	54,017,125	44,967,394
Non-controlling interest	507,689	329,343
TOTAL EQUITY	54,524,814	45,296,737
TOTAL LIABILITIES AND EQUITY	$ 188,150,900	$ 163,331,750

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2017	Dec. 31, 2016
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	15,356,560	15,114,991
Common Stock, shares outstanding	15,356,560	15,114,991

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net sales	$ 51,699,930	$ 36,732,310	$ 93,566,778	$ 65,829,365
Cost of sales	(39,628,164)	(29,088,639)	(71,560,178)	(52,308,655)
Gross profit	12,071,766	7,643,671	22,006,600	13,520,710
Research and development expenses	(2,137,286)	(2,035,886)	(3,951,216)	(3,658,769)
Selling and distribution expenses	(1,722,910)	(1,539,395)	(3,361,223)	(3,074,431)
General and administrative expenses	(3,016,401)	(3,248,899)	(6,074,963)	(6,318,613)
Foreign currency transaction (loss) gain	(514,624)	600,313	(828,502)	509,877
Total operating expenses	(7,391,221)	(6,223,867)	(14,215,904)	(12,541,936)
Income from operations	4,680,545	1,419,804	7,790,696	978,774
Changes in fair value of warrant liability	31,811	7,077	259	126,546
Other income	276,365	1,055,947	854,458	1,211,875
Equity in (loss) earnings of investee	(41,607)	0	105,325	0
Gain on dilution in equity method investee	491,325	0	491,325	0
Interest expenses	(380,531)	(435,402)	(983,848)	(710,394)
Income before taxes	5,057,908	2,047,426	8,258,215	1,606,801
Income taxes expenses	(595,708)	(174,313)	(1,183,473)	(209,817)
Net income	4,462,200	1,873,113	7,074,742	1,396,984
Less: net income (loss) attributable to non-controlling interest	90,963	(178,669)	167,856	(312,190)
Net income attributable to the Company	4,371,237	2,051,782	6,906,886	1,709,174
Comprehensive income (loss)
Net income	4,462,200	1,873,113	7,074,742	1,396,984
Foreign currency translation gain (loss)	1,508,714	(1,964,424)	1,484,713	(1,714,278)
Comprehensive income (loss)	5,970,914	(91,311)	8,559,455	(317,294)
Less: comprehensive income (loss) attributable to non-controlling interest	98,795	(197,060)	178,346	(325,882)
Comprehensive income attributable to the Company	$ 5,872,119	$ 105,749	$ 8,381,109	$ 8,588
Earnings per share of common stock attributable to the Company
- Basic	$ 0.29	$ 0.14	$ 0.45	$ 0.11
- Diluted	$ 0.28	$ 0.14	$ 0.45	$ 0.11
Weighted average number of common stock outstanding
- Basic	15,317,101	15,101,679	15,218,820	15,101,679
- Diluted	15,479,357	15,102,877	15,304,773	15,103,886

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities
Net income	$ 7,074,742	$ 1,396,984
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,429,982	2,486,196
Allowance for doubtful accounts	17,994	4,837
Loss on disposal of property, plant and equipment	25,218	95,368
Deferred income tax	263,673	(64,671)
Equity in earnings of investee	(105,325)	0
Gain on dilution in equity method investee	(491,325)	0
Share based compensation	44,815	205,969
Changes in fair value of warrant liability	(259)	(126,546)
Changes in operating assets and liabilities:
Accounts receivable	4,390,991	3,216,097
Notes receivable	(1,057,366)	1,051,486
Prepayments and other receivables	(3,799,960)	(770,029)
Amount due from Yipeng	5,178,499	(2,187,784)
Amount due to Yipeng	(1,480,335)	774,545
Inventories	(9,595,161)	(1,735,486)
Accounts payable	(494,812)	(2,843,233)
Deferred income	109,892	(75,912)
Other payables and accrued liabilities	(2,145,295)	349,026
Income taxes payable	(227,668)	(499,161)
Net cash flows provided by operating activities	138,300	1,277,686
Cash flows from investing activities
Acquisitions of plant and equipment	(5,199,130)	(4,415,690)
Proceeds from investment	0	(764,409)
Net cash flows used in investing activities	(5,199,130)	(5,180,099)
Cash flows from financing activities
Proceeds from short-term loans	2,916,017	1,452,377
Repayment of short-term loans	(2,841,696)	0
Repayment of long-term loans	0	(917,291)
Proceeds from non-financial institution borrowings	10,200,959	4,586,455
Repayment of non-financial institution borrowings	(2,331,648)	0
Proceeds from notes payable	40,861,835	29,485,540
Repayment of notes payable	(31,049,819)	(30,313,965)
Proceeds from exercise of employee options	623,806	0
Change in restricted cash	(4,364,417)	1,531,837
Net cash flows provided by financing activities	14,015,037	5,824,953
Effect of foreign currency translation on cash	1,047,057	(973,532)
Net increase in cash	10,001,264	949,008
Cash - beginning of period	9,324,393	5,849,967
Cash - end of period	19,325,657	6,798,975
Cash paid for:
Income taxes	1,147,467	773,650
Interest expenses	948,831	710,394
Non-cash transactions
Offset of deferred income related to government grant and property, plant and equipment	$ 85,571	$ 26,988

The Company and basis of presen

The Company and basis of presentation	6 Months Ended
	Jun. 30, 2017
Organization and basis of presentation [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. The Company and basis of presentation The consolidated financial statements include the financial statements of Highpower International, Inc. ("Highpower") and its 100 70 Basis of presentation The condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial informtion, the instructions to Form 10-Q and Article 8 of Regulation S-X. They do not include all of the information and notes required by generally accepted accounting principles for complete financial statements. 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 year ended December 31, 2016, filed with the SEC on March 28, 2017. In the opinion of management, all adjustments (which include normal recurring adjustments) necessary to present a fair presentation of the Company’s consolidated financial position as of June 30, 2017, its consolidated results of operations for the three and six months ended June 30, 2017 and cash flows for the six months ended June 30, 2017, as applicable, have been made. Operating results for the three and six months period ended June 30, 2017 are not necessarily indicative of the operating results that may be expected for the year ending December 31, 2017 or any future periods. Concentrations of credit risk No customer accounted for 10% or more of total sales during the three and six months ended June 30, 2017 and 2016. No supplier accounted for 10% or more of the total purchase amount during the three and six months ended June 30, 2017 and 2016. No customer accounted for 10% or more of the accounts receivable as of June 30, 2017 and December 31, 2016.

Summary of significant accounti

Summary of significant accounting policies	6 Months Ended
	Jun. 30, 2017
Summary of significant accounting policies [Abstract]
Significant Accounting Policies [Text Block]	2. Summary of significant accounting policies For an investee company over which the Company holds less than 20% voting interest, the investments are accounted for under the cost method. For an investee company over which the Company has the ability to exercise significant influence, but does not have a controlling interest, the Company accounted for those using the equity method. Significant influence is generally considered to exist when the Company has an ownership interest in the voting stock of the investee between 20% and 50%. Other factors, such as representation on the investee’s board of directors, voting rights and the impact of commercial arrangements, are also considered in determining whether the equity method of accounting is appropriate. An impairment charge is recorded if the carrying amount of the investment exceeds its fair value and this condition is determined to be other-than temporary. As of June 30, 2017, management believes no impairment charge is necessary. Highpower’s functional currency is the United States dollar ("US$"). HKHTC's functional currency is the Hong Kong dollar ("HK$"). The functional currency of Highpower's other direct and indirect wholly and majority owned subsidiaries in the PRC is the Renminbi ("RMB"). Most of the Company’s oversea sales are priced and settled with US$. At the date a foreign currency transaction is recognized, each asset, liability, revenue, expense, gain, or loss arising from the transaction is measured initially in the functional currency of the recording entity by use of the exchange rate in effect at that date. The increase or decrease in expected functional currency cash flows upon settlement of a transaction resulting from a change in exchange rates between the functional currency and the currency in which the transaction is denominated is recognized as foreign currency transaction gain or loss that is included in earnings for the period in which the exchange rate changes. At each balance sheet date, recorded balances that are denominated in a foreign currency are adjusted to reflect the current exchange rate. The Company’s reporting currency is US$. 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 accumulated other comprehensive income (loss). The carrying values of the Company’s financial instruments, including cash, restricted cash, trade and other receivables, deposits, trade and other payables and bank borrowings, approximate their fair value due to the short-term maturity of such instruments. For warrants that are not indexed to the Company’s stock, the Company records the fair value of the issued warrants as a liability at each balance sheet date and records changes in the estimated fair value as a non-cash gain or loss in the consolidated statement of operations and comprehensive income. The warrant liability is recognized in the balance sheet at the fair value (level 3). The fair value of these warrants have been determined using the Black-Scholes pricing mode. The Black-Scholes pricing model provides for assumptions regarding volatility, call and put features and risk-free interest rates within the total period to maturity. The Company revalued the warrants utilizing a binomial model as of December 31, 2016 with no material difference in the value. The warrants expired on April 17, 2017. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), which was subsequently modified in August 2015 by ASU No. 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date. This guidance will be effective for fiscal years (and interim reporting periods within those years) beginning after December 15, 2017. The core principle of ASU No. 2014-09 is that companies should recognize revenue when the transfer of promised goods or services to customers occurs in an amount that reflects what the company expects to receive. It requires additional disclosures to describe the nature, amount, timing and uncertainty of revenue and cash flows from contracts with customers. In 2016, the FASB issued additional ASUs that clarify the implementation guidance on principal versus agent considerations (ASU 2016-08), on identifying performance obligations and licensing (ASU 2016-10), and on narrow-scope improvements and practical expedients (ASU 2016-12) as well as on the revenue recognition criteria and other technical corrections (ASU 2016-20). In 2017, the FASB issued Accounting Standards Update (ASU) 2017-05, Other Income—Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20), which was originally issued in ASU 2014-09. The amendments in this Update require that an entity to initially measure a retained non-controlling interest in a nonfinancial asset at fair value consistent with a how a retained non-controlling interest in a business is measured. During 2016, the Company made significant progress toward its evaluation of the potential changes from adopting the new standard on its future financial reporting and disclosures. The Company has established a cross-functional implementation team on assessment on the five-step model of the new standard to its revenue contracts. The adoption of this guidance is not expected to have a material effect on our result of operations, financial position or liquidity. Management currently anticipates using the modified retrospective method as of January 1, 2018. On February 25, 2016, the FASB issued Accounting Standards Update (ASU) 2016-02, Leases (Topic 842). It requires that a lessee recognize the assets and liabilities that arise from operating leases. A lessee should recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. In transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. Public business entities should apply the amendments in ASU 2016-02 for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years (i.e., January 1, 2019, for a calendar year entity). Early application is permitted for all public business entities and all nonpublic business entities upon issuance. The Company is currently evaluating the impact of adopting ASU 2016-02 on its consolidated financial statements. In August 2016, the FASB issued Accounting Standards Update (ASU) 2016-15, Statement of Cash Flows (Topic 230). The amendments in this update provide guidance on eight specific cash flow issue. It applies to all entities. For public business entities, the amendments in this Update are effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods. Early adoption is permitted for any entity in any interim or annual period. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cash flows. In October 2016, the FASB issued Accounting Standards Update (ASU) 2016-16, Income Taxes (Topic 740). The amendments in this Update is to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory and align the recognition of income tax consequences for intra-entity transfers of assets other than inventory with International Financial Reporting Standards (IFRS). Public business entities should apply the amendments in ASU 2016-16 for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted for any entity in any interim or annual period. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cash flows. In November 2016, the FASB issued Accounting Standards Update (ASU) 2016-18, Statement of Cash Flows (Topic 230). The amendments in this Update require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. The amendments in this Update are effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. For all other entities, the amendments are effective for fiscal years beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cash flows. The Company does not believe other recently issued but not yet effective accounting standards, if currently adopted, would have a material effect on the consolidated financial position, statements of operations and cash flows.

Accounts receivable, net

Accounts receivable, net	6 Months Ended
	Jun. 30, 2017
Accounts receivable, net [Abstract]
Accounts Receivable [Text Block]	Accounts receivable, net June 30, December 31, 2017 2016 (Unaudited) $ $ Accounts receivable 45,925,897 49,460,347 Less: allowance for doubtful accounts 3,188,690 3,179,578 42,737,207 46,280,769

Inventories

Inventories	6 Months Ended
	Jun. 30, 2017
Inventories [Abstract]
Inventory Disclosure [Text Block]	4. Inventories June 30, December 31, 2017 2016 (Unaudited) $ $ Raw materials 10,902,993 6,492,755 Work in progress 7,923,532 4,878,856 Finished goods 13,386,334 10,608,180 Packing materials 25,857 21,083 Consumables 249,551 206,459 32,488,267 22,207,333

Property, plant and equipment,

Property, plant and equipment, net	6 Months Ended
	Jun. 30, 2017
Property, plant and equipment, net [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	5. Property, plant and equipment, net June 30, December 31, 2017 2016 (Unaudited) $ $ Cost Construction in progress 814,911 715,188 Furniture, fixtures and office equipment 4,615,273 4,025,635 Leasehold improvement 6,458,733 5,865,909 Machinery and equipment 30,313,242 27,526,572 Motor vehicles 1,573,570 1,496,628 Buildings 22,419,779 21,797,158 66,195,508 61,427,090 Less: accumulated depreciation 20,027,952 17,922,099 46,167,556 43,504,991 The Company recorded depreciation expenses of $ 2,361,482 2,415,561 During the six months ended June 30, 2017, the Company deducted deferred income related to government grants of $86,643 on the carrying amount of property, plant and equipment. During the year ended December 31, 2016, the Company deducted deferred income related to government grants of $ 229,951 The real estate properties and buildings in Huizhou and Ganzhou have been pledged as collateral for short-term loans and bank acceptance bills drawn under certain lines of credit as of June 30, 2017 and December 31, 2016. The real estate properties and buildings in Shenzhen have been pledged as collateral for short-term loans as of June 30, 2017 and December 31, 2016 (Note 9).

Long-term investment

Long-term investment	6 Months Ended
	Jun. 30, 2017
Equity Method Investments and Joint Ventures [Abstract]
Long Term Investment [Text Block]	6. Long-term investment On June 30, 2016, the Company entered into an Equity Transfer and Capital Increase and Supplementary Agreements (collectively, the “2016 Equity Purchase Agreement”) with Huizhou Yipeng Energy Technology Co. Ltd. ("Yipeng") and its shareholders. As of December 31, 2016, the Company has invested an aggregate of RMB 65.0 9.6 35.4 On May 5, 2017, the Company entered into an Agreement for Equity Transfer and Capital Increase (“Equity Transfer Agreement”) with a third party, Xiamen Jiupai Yuanjiang New Power Equity Investment Partnership ("New Power"). Pursuant to the terms of the Equity Transfer Agreement, the Company will sell 25,145,834 71.0 10.5 60 20 35.4 4.654 On June 8, 2017, Yipeng completed the business registration on equity issuance to New Power for RMB 60.0 28.32 491,325 The equity in loss of investee was $ 41,607 105,325

Taxation

Taxation	6 Months Ended
	Jun. 30, 2017
Taxation [Abstract]
Income Tax Disclosure [Text Block]	7. Taxation Highpower and its direct and indirect wholly and majority owned 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 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 35 Hong Kong HKHTC, which was 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 25 15 SZ Highpower, ICON and GZ Highpower received the NHTE in 2014 and has reapplied for NHTE status in the second quarter of 2017. If SZ Highpower, ICON and GZ Highpower fail to obtain the approval in 2017, SZ Highpower, ICON and GZ Highpower will be subject to income tax at a rate of 25 HZ HTC received NHTE status in 2015 and SZ Springpower received NHTE status in 2016. As a result, HZ HTC and SZ Springpower are entitled to a preferential enterprise income tax rate of 15 Three months ended Six months ended June 30, June 30, 2017 2016 2017 2016 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Current 456,583 111,867 919,800 274,488 Deferred 139,125 62,446 263,673 (64,671) Total income tax expenses 595,708 174,313 1,183,473 209,817 Three months ended Six months ended June 30, June 30, 2017 2016 2017 2016 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Income before tax 5,057,908 2,047,426 8,258,215 1,606,801 Provision for income taxes at applicable income tax rate 1,267,859 512,993 2,071,191 409,393 Effect of preferential tax rate (397,140) (116,208) (788,983) (139,878) R&D expenses eligible for super deduction (442,939) (555,531) (442,939) (555,531) Non-deductible expenses 17,448 96,716 33,995 114,336 Change in valuation allowance 150,480 236,343 310,209 381,497 Effective enterprise income taxes expenses 595,708 174,313 1,183,473 209,817 3) Deferred tax assets June 30, December 31, 2017 2016 (Unaudited) $ $ Tax loss carry-forward 4,330,451 4,274,881 Allowance for doubtful receivables 125,037 121,932 Impairment for inventory 119,315 98,276 Difference for sales cut-off 731 14,245 Deferred income 133,823 114,224 Property, plant and equipment subsidized by government grant 475,064 468,313 Impairment for property, plant and equipment 58,779 76,248 Total gross deferred tax assets 5,243,200 5,168,119 Valuation allowance (3,994,974) (3,690,358) Total net deferred tax assets 1,248,226 1,477,761 The deferred tax assets arising from net operating losses will expire from 2018 through 2021 Valuation allowance was provided against deferred tax assets in entities where it was determined it was more likely than not that the benefits of the deferred tax assets will not be realized. The Company had deferred tax assets which consisted of tax loss carry-forwards and others, which can be carried forward to offset future taxable income. The management determines it is more likely than not that part of deferred tax assets could not be utilized, so allowance was provided as of June 30, 2017 and December 31, 2016.

Notes payable

Notes payable	6 Months Ended
	Jun. 30, 2017
Notes payable [Abstract]
Notes Payable Disclosure [Text Block]	8. Notes payable Notes payable presented to certain suppliers as a payment against the outstanding trade payables. Notes payable are mainly bank acceptance bills which are non-interest bearing and generally mature within six months. The outstanding bank acceptance bills are secured by restricted cash deposited in banks. Outstanding bank acceptance bills were $ 41,373,724 30,658,000

Short-term loans

Short-term loans	6 Months Ended
	Jun. 30, 2017
Short-term loans [Abstract]
Short-term Debt [Text Block]	9. Short-term loans As of June 30, 2017 and December 31, 2016, the bank borrowings were for working capital and capital expenditure purposes and were secured by personal guarantees executed by certain directors of the Company, the time deposits with a carrying amount of $ 154,931 151,083 3,670,645 3,622,435 11,995,138 11,854,452 The loans as of June 30, 2017 were primarily obtained from three banks with interest rates ranging from 4.35 5.655 4.35 5.87 537,156 422,593 277,319 215,485

Non-financial institution borro

Non-financial institution borrowings	6 Months Ended
	Jun. 30, 2017
Short-term loans [Abstract]
Non-Financial Institution Borrowings [Text Block]	10. Non-financial institution borrowings In April 2016, the Company obtained borrowings in an amount of RMB 20 2,951,071 4 590,214 16 2,360,857 In May 2016 and January 2017, the Company obtained borrowings in an amount of RMB 10 1,475,536 60 8,853,214 5.66 In May 2017, the Company obtained borrowings in an amount of RMB 10 1,475,536 5.655 The interest expense of the above borrowings was $ 297,753 32,905 154,235 32,905

Earnings per share

Earnings per share	6 Months Ended
	Jun. 30, 2017
Earnings per share [Abstract]
Earnings Per Share [Text Block]	11. Earnings per share The following table sets forth the computation of basic and diluted earnings per common share for the three and six months ended June 30, 2017 and 2016. Three months ended Six months ended June 30, June 30, 2017 2016 2017 2016 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Numerator: Net income attributable to the Company 4,371,237 2,051,782 6,906,886 1,709,174 Denominator: Weighted-average shares outstanding - Basic 15,317,101 15,101,679 15,218,820 15,101,679 - Dilutive effects of equity incentive awards 162,256 1,198 85,953 2,207 - Diluted 15,479,357 15,102,877 15,304,773 15,103,886 Net income per share: - Basic 0.29 0.14 0.45 0.11 - Diluted 0.28 0.14 0.45 0.11 685,001 and 540,001 options and warrants were not included in the computation of diluted earnings per share for the six months and three months ended June 30, 2017, respectively, and 1,701,927 options and warrants were not included in the computation of diluted earnings per share for the six months and three months ended June 30, 2016, respectively, because the options’ exercise price was greater than the average market price of the ordinary shares.

Defined contribution plan

Defined contribution plan	6 Months Ended
	Jun. 30, 2017
Defined contribution plan [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	12. 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 contributions mentioned above, the Company has no legal obligation for the benefits beyond the contributions made. The total contributions made, which were expensed as incurred, were $ 1,125,097 754,663

Commitments and contingencies

Commitments and contingencies	6 Months Ended
	Jun. 30, 2017
Commitments and contingencies [Abstract]
Commitments and Contingencies Disclosure [Text Block]	13. Commitments and contingencies Contingencies On January 14, 2016, FirsTrust China, Ltd (“FirsTrust”) filed an amended complaint in the Delaware Chancery Court (amending its initial complaint filed February 25, 2015) naming Highpower as the defendant asserting a cause of action for breach of contract and conversion of stock, and seeking damages in the form of issuance of 150,000

Segment information

Segment information	6 Months Ended
	Jun. 30, 2017
Segment information [Abstract]
Segment Reporting Disclosure [Text Block]	14. Segment information The reportable segments are components of the Company that offer different products and are separately managed, with separate financial information available that is separately evaluated regularly by the Company’s chief operating decision maker (“CODM”), the Chief Executive Officer, in determining the performance of the business. The Company categorizes its business into three reportable segments, namely (i) Lithium Business; (ii) Ni-MH Batteries and Accessories; and (iii) New Materials. The descriptions of the reportable segments have been extended from Lithium Batteries and Ni-MH Batteries to Lithium Business and Ni-MH Batteries and Accessories, respectively. Lithium Business mainly consists of lithium batteries, power storage system and power source solutions. Ni-MH Batteries and Accessories mainly consists of Ni-MH rechargeable batteries, sized batteries in blister packing as well as chargers and battery packs. Prior to the six months ended June 30, 2017, the sales of products except for the batteries in the two reporting segments were insignificant. Three months ended Six months ended June 30, June 30, 2017 2016 2017 2016 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Net sales Lithium Business 37,009,048 23,666,887 64,499,542 38,981,832 Ni-MH Batteries and Accessories 11,783,901 11,972,810 24,311,214 24,829,135 New Materials 2,906,981 1,092,613 4,756,022 2,018,398 Total 51,699,930 36,732,310 93,566,778 65,829,365 Cost of Sales Lithium Business 28,310,375 18,857,605 49,950,244 31,364,936 Ni-MH Batteries and Accessories 9,013,125 8,869,549 18,201,515 18,475,355 New Materials 2,304,664 1,361,485 3,408,419 2,468,364 Total 39,628,164 29,088,639 71,560,178 52,308,655 Gross Profit Lithium Business 8,698,673 4,809,282 14,549,298 7,616,896 Ni-MH Batteries and Accessories 2,770,776 3,103,261 6,109,699 6,353,780 New Materials 602,317 (268,872) 1,347,603 (449,966) Total 12,071,766 7,643,671 22,006,600 13,520,710 June 30 December 31, 2017 2016 (Unaudited) $ $ Total Assets Lithium Business 129,591,163 115,116,508 Ni-MH Batteries and Accessories 46,881,968 37,994,369 New Materials 11,677,769 10,220,873 Total 188,150,900 163,331,750 Three months ended Six months ended June 30, June 30, 2017 2016 2017 2016 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Net sales China Mainland 32,086,138 28,855,932 54,247,730 37,385,011 Asia, others 12,092,612 6,295,056 25,788,170 18,275,423 Europe 3,612,677 208,548 8,465,407 6,524,327 North America 3,604,935 1,285,688 4,663,067 2,919,834 South America 205,549 14,074 267,286 478,971 Africa 55,567 25,968 55,567 50,001 Others 42,452 47,044 79,551 195,798 51,699,930 36,732,310 93,566,778 65,829,365 June 30 December 31, 2017 2016 (Unaudited) $ $ Accounts receivable China Mainland 29,275,047 29,663,633 Asia, others 10,496,258 10,441,358 Europe 2,507,947 3,875,979 North America 423,027 2,260,840 South America 15,803 26,610 Africa 378 378 Others 18,747 11,971 42,737,207 46,280,769

Related party balance and trans

Related party balance and transaction	6 Months Ended
	Jun. 30, 2017
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	15. Related party balance and transaction Related party balance June 30, December 31, 2017 2016 (Unaudited) $ $ Accounts receivable 2,457,684 7,125,140 Other receivable 7,641 392,110 Account due from Yipeng 2,465,325 7,517,250 Accounts payable (1) 54,884 1,516,557 Other payable 7,320 5,756 Amount due to Yipeng 62,204 1,522,313 (1) Accounts payable represented $nil and $ 1.3 54,884 0.2 Related party transaction Three months ended June 30, Period from May 2,2016 to June 2017 Six months ended June 30, 2017 30,2016 (Unaudited) (Unaudited) (Unaudited) $ $ $ Income: Sales 1,422,533 2,046,856 1,264,934 Rental income 7,012 18,311 - Expenses: Equipment rental fees 162,927 325,229 -

Subsequent event

Subsequent event	6 Months Ended
	Jun. 30, 2017
Subsequent event [Abstract]
Subsequent Events [Text Block]	16. Subsequent event Pursuant to the terms of the Equity Transfer Agreement (Note 6), on July 27, 2017, the Company received the Consideration from New Power, and the Company’s equity ownership in Yipeng decreased to 4.654 1.6 The Company has evaluated subsequent events through the issuance of the consolidated financial statements and no other subsequent event is identified that would have required adjustment or disclosure in the consolidated financial statements.

Summary of significant accoun22

Summary of significant accounting policies (Policies)	6 Months Ended
	Jun. 30, 2017
Summary of significant accounting policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of presentation The condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial informtion, the instructions to Form 10-Q and Article 8 of Regulation S-X. They do not include all of the information and notes required by generally accepted accounting principles for complete financial statements. 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 year ended December 31, 2016, filed with the SEC on March 28, 2017. In the opinion of management, all adjustments (which include normal recurring adjustments) necessary to present a fair presentation of the Company’s consolidated financial position as of June 30, 2017, its consolidated results of operations for the three and six months ended June 30, 2017 and cash flows for the six months ended June 30, 2017, as applicable, have been made. Operating results for the three and six months period ended June 30, 2017 are not necessarily indicative of the operating results that may be expected for the year ending December 31, 2017 or any future periods.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentrations of credit risk No customer accounted for 10% or more of total sales during the three and six months ended June 30, 2017 and 2016. No supplier accounted for 10% or more of the total purchase amount during the three and six months ended June 30, 2017 and 2016. No customer accounted for 10% or more of the accounts receivable as of June 30, 2017 and December 31, 2016.
Inventory, Policy [Policy Text Block]	Long-term investment For an investee company over which the Company holds less than 20% voting interest, the investments are accounted for under the cost method. For an investee company over which the Company has the ability to exercise significant influence, but does not have a controlling interest, the Company accounted for those using the equity method. Significant influence is generally considered to exist when the Company has an ownership interest in the voting stock of the investee between 20% and 50%. Other factors, such as representation on the investee’s board of directors, voting rights and the impact of commercial arrangements, are also considered in determining whether the equity method of accounting is appropriate. An impairment charge is recorded if the carrying amount of the investment exceeds its fair value and this condition is determined to be other-than temporary. As of June 30, 2017, management believes no impairment charge is necessary.
Foreign Currency Transactions and Translations Policy [Policy Text Block]	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 Highpower's other direct and indirect wholly and majority owned subsidiaries in the PRC is the Renminbi ("RMB"). Most of the Company’s oversea sales are priced and settled with US$. At the date a foreign currency transaction is recognized, each asset, liability, revenue, expense, gain, or loss arising from the transaction is measured initially in the functional currency of the recording entity by use of the exchange rate in effect at that date. The increase or decrease in expected functional currency cash flows upon settlement of a transaction resulting from a change in exchange rates between the functional currency and the currency in which the transaction is denominated is recognized as foreign currency transaction gain or loss that is included in earnings for the period in which the exchange rate changes. At each balance sheet date, recorded balances that are denominated in a foreign currency are adjusted to reflect the current exchange rate. The Company’s reporting currency is US$. 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 accumulated other comprehensive income (loss).
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair value of financial instruments The carrying values of the Company’s financial instruments, including cash, restricted cash, trade and other receivables, deposits, trade and other payables and bank borrowings, approximate their fair value due to the short-term maturity of such instruments.
Warrant Liabilities Policy [Policy Text Block]	Warrant Liability For warrants that are not indexed to the Company’s stock, the Company records the fair value of the issued warrants as a liability at each balance sheet date and records changes in the estimated fair value as a non-cash gain or loss in the consolidated statement of operations and comprehensive income. The warrant liability is recognized in the balance sheet at the fair value (level 3). The fair value of these warrants have been determined using the Black-Scholes pricing mode. The Black-Scholes pricing model provides for assumptions regarding volatility, call and put features and risk-free interest rates within the total period to maturity. The Company revalued the warrants utilizing a binomial model as of December 31, 2016 with no material difference in the value. The warrants expired on April 17, 2017.
New Accounting Pronouncements, Policy [Policy Text Block]	Recently issued accounting pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), which was subsequently modified in August 2015 by ASU No. 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date. This guidance will be effective for fiscal years (and interim reporting periods within those years) beginning after December 15, 2017. The core principle of ASU No. 2014-09 is that companies should recognize revenue when the transfer of promised goods or services to customers occurs in an amount that reflects what the company expects to receive. It requires additional disclosures to describe the nature, amount, timing and uncertainty of revenue and cash flows from contracts with customers. In 2016, the FASB issued additional ASUs that clarify the implementation guidance on principal versus agent considerations (ASU 2016-08), on identifying performance obligations and licensing (ASU 2016-10), and on narrow-scope improvements and practical expedients (ASU 2016-12) as well as on the revenue recognition criteria and other technical corrections (ASU 2016-20). In 2017, the FASB issued Accounting Standards Update (ASU) 2017-05, Other Income—Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20), which was originally issued in ASU 2014-09. The amendments in this Update require that an entity to initially measure a retained non-controlling interest in a nonfinancial asset at fair value consistent with a how a retained non-controlling interest in a business is measured. During 2016, the Company made significant progress toward its evaluation of the potential changes from adopting the new standard on its future financial reporting and disclosures. The Company has established a cross-functional implementation team on assessment on the five-step model of the new standard to its revenue contracts. The adoption of this guidance is not expected to have a material effect on our result of operations, financial position or liquidity. Management currently anticipates using the modified retrospective method as of January 1, 2018. On February 25, 2016, the FASB issued Accounting Standards Update (ASU) 2016-02, Leases (Topic 842). It requires that a lessee recognize the assets and liabilities that arise from operating leases. A lessee should recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. In transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. Public business entities should apply the amendments in ASU 2016-02 for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years (i.e., January 1, 2019, for a calendar year entity). Early application is permitted for all public business entities and all nonpublic business entities upon issuance. The Company is currently evaluating the impact of adopting ASU 2016-02 on its consolidated financial statements. In August 2016, the FASB issued Accounting Standards Update (ASU) 2016-15, Statement of Cash Flows (Topic 230). The amendments in this update provide guidance on eight specific cash flow issue. It applies to all entities. For public business entities, the amendments in this Update are effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods. Early adoption is permitted for any entity in any interim or annual period. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cash flows. In October 2016, the FASB issued Accounting Standards Update (ASU) 2016-16, Income Taxes (Topic 740). The amendments in this Update is to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory and align the recognition of income tax consequences for intra-entity transfers of assets other than inventory with International Financial Reporting Standards (IFRS). Public business entities should apply the amendments in ASU 2016-16 for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted for any entity in any interim or annual period. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cash flows. In November 2016, the FASB issued Accounting Standards Update (ASU) 2016-18, Statement of Cash Flows (Topic 230). The amendments in this Update require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. The amendments in this Update are effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. For all other entities, the amendments are effective for fiscal years beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial condition, results of operations or cash flows. The Company does not believe other recently issued but not yet effective accounting standards, if currently adopted, would have a material effect on the consolidated financial position, statements of operations and cash flows.

Accounts receivable, net (Table

Accounts receivable, net (Tables)	6 Months Ended
	Jun. 30, 2017
Accounts receivable, net [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	June 30, December 31, 2017 2016 (Unaudited) $ $ Accounts receivable 45,925,897 49,460,347 Less: allowance for doubtful accounts 3,188,690 3,179,578 42,737,207 46,280,769

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2017
Inventories [Abstract]
Schedule of Inventory, Current [Table Text Block]	June 30, December 31, 2017 2016 (Unaudited) $ $ Raw materials 10,902,993 6,492,755 Work in progress 7,923,532 4,878,856 Finished goods 13,386,334 10,608,180 Packing materials 25,857 21,083 Consumables 249,551 206,459 32,488,267 22,207,333

Taxation (Tables)

Taxation (Tables)	6 Months Ended
	Jun. 30, 2017
Taxation [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	The components of the provision for income taxes expenses are: Three months ended Six months ended June 30, June 30, 2017 2016 2017 2016 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Current 456,583 111,867 919,800 274,488 Deferred 139,125 62,446 263,673 (64,671) Total income tax expenses 595,708 174,313 1,183,473 209,817
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	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 Six months ended June 30, June 30, 2017 2016 2017 2016 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Income before tax 5,057,908 2,047,426 8,258,215 1,606,801 Provision for income taxes at applicable income tax rate 1,267,859 512,993 2,071,191 409,393 Effect of preferential tax rate (397,140) (116,208) (788,983) (139,878) R&D expenses eligible for super deduction (442,939) (555,531) (442,939) (555,531) Non-deductible expenses 17,448 96,716 33,995 114,336 Change in valuation allowance 150,480 236,343 310,209 381,497 Effective enterprise income taxes expenses 595,708 174,313 1,183,473 209,817
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	The following represents the tax effect of each major type of temporary difference. June 30, December 31, 2017 2016 (Unaudited) $ $ Tax loss carry-forward 4,330,451 4,274,881 Allowance for doubtful receivables 125,037 121,932 Impairment for inventory 119,315 98,276 Difference for sales cut-off 731 14,245 Deferred income 133,823 114,224 Property, plant and equipment subsidized by government grant 475,064 468,313 Impairment for property, plant and equipment 58,779 76,248 Total gross deferred tax assets 5,243,200 5,168,119 Valuation allowance (3,994,974) (3,690,358) Total net deferred tax assets 1,248,226 1,477,761

Earnings per share (Tables)

Earnings per share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings per share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The following table sets forth the computation of basic and diluted earnings per common share for the three and six months ended June 30, 2017 and 2016. Three months ended Six months ended June 30, June 30, 2017 2016 2017 2016 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Numerator: Net income attributable to the Company 4,371,237 2,051,782 6,906,886 1,709,174 Denominator: Weighted-average shares outstanding - Basic 15,317,101 15,101,679 15,218,820 15,101,679 - Dilutive effects of equity incentive awards 162,256 1,198 85,953 2,207 - Diluted 15,479,357 15,102,877 15,304,773 15,103,886 Net income per share: - Basic 0.29 0.14 0.45 0.11 - Diluted 0.28 0.14 0.45 0.11

Segment information (Tables)

Segment information (Tables)	6 Months Ended
	Jun. 30, 2017
Segment information [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	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 were set out as follows: Three months ended Six months ended June 30, June 30, 2017 2016 2017 2016 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Net sales Lithium Business 37,009,048 23,666,887 64,499,542 38,981,832 Ni-MH Batteries and Accessories 11,783,901 11,972,810 24,311,214 24,829,135 New Materials 2,906,981 1,092,613 4,756,022 2,018,398 Total 51,699,930 36,732,310 93,566,778 65,829,365 Cost of Sales Lithium Business 28,310,375 18,857,605 49,950,244 31,364,936 Ni-MH Batteries and Accessories 9,013,125 8,869,549 18,201,515 18,475,355 New Materials 2,304,664 1,361,485 3,408,419 2,468,364 Total 39,628,164 29,088,639 71,560,178 52,308,655 Gross Profit Lithium Business 8,698,673 4,809,282 14,549,298 7,616,896 Ni-MH Batteries and Accessories 2,770,776 3,103,261 6,109,699 6,353,780 New Materials 602,317 (268,872) 1,347,603 (449,966) Total 12,071,766 7,643,671 22,006,600 13,520,710 June 30 December 31, 2017 2016 (Unaudited) $ $ Total Assets Lithium Business 129,591,163 115,116,508 Ni-MH Batteries and Accessories 46,881,968 37,994,369 New Materials 11,677,769 10,220,873 Total 188,150,900 163,331,750
Revenue from External Customers by Geographic Areas [Table Text Block]	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 were set out as follows: Three months ended Six months ended June 30, June 30, 2017 2016 2017 2016 (Unaudited) (Unaudited) (Unaudited) (Unaudited) $ $ $ $ Net sales China Mainland 32,086,138 28,855,932 54,247,730 37,385,011 Asia, others 12,092,612 6,295,056 25,788,170 18,275,423 Europe 3,612,677 208,548 8,465,407 6,524,327 North America 3,604,935 1,285,688 4,663,067 2,919,834 South America 205,549 14,074 267,286 478,971 Africa 55,567 25,968 55,567 50,001 Others 42,452 47,044 79,551 195,798 51,699,930 36,732,310 93,566,778 65,829,365 June 30 December 31, 2017 2016 (Unaudited) $ $ Accounts receivable China Mainland 29,275,047 29,663,633 Asia, others 10,496,258 10,441,358 Europe 2,507,947 3,875,979 North America 423,027 2,260,840 South America 15,803 26,610 Africa 378 378 Others 18,747 11,971 42,737,207 46,280,769

Related party balance and tra28

Related party balance and transaction (Tables)	6 Months Ended
	Jun. 30, 2017
Related Party Transactions [Abstract]
Summary of Related Party Outstandings [Table Text Block]	The outstanding amounts of Yipeng were as follow: June 30, December 31, 2017 2016 (Unaudited) $ $ Accounts receivable 2,457,684 7,125,140 Other receivable 7,641 392,110 Account due from Yipeng 2,465,325 7,517,250 Accounts payable (1) 54,884 1,516,557 Other payable 7,320 5,756 Amount due to Yipeng 62,204 1,522,313 (1) Accounts payable represented $nil and $ 1.3 54,884 0.2
Schedule of Related Party Transactions [Table Text Block]	The details of the transactions with Yipeng were as follows: Three months ended June 30, Period from May 2,2016 to June 2017 Six months ended June 30, 2017 30,2016 (Unaudited) (Unaudited) (Unaudited) $ $ $ Income: Sales 1,422,533 2,046,856 1,264,934 Rental income 7,012 18,311 - Expenses: Equipment rental fees 162,927 325,229 -

The Company and basis of pres29

The Company and basis of presentation (Details Textual)	Jun. 30, 2017
Hong Kong Highpower Technology Company Limited [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Equity Method Investment, Ownership Percentage	100.00%
Ganzhou Highpower Technology Co., Ltd ("GZ Highpower") [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Equity Method Investment, Ownership Percentage	70.00%

Accounts receivable, net (Detai

Accounts receivable, net (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Accounts receivable	$ 45,925,897	$ 49,460,347
Less: allowance for doubtful accounts	3,188,690	3,179,578
Accounts receivable, net	$ 42,737,207	$ 46,280,769

Inventories (Details)

Inventories (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Raw materials	$ 10,902,993	$ 6,492,755
Work in progress	7,923,532	4,878,856
Finished goods	13,386,334	10,608,180
Packing materials	25,857	21,083
Consumables	249,551	206,459
Inventories	$ 32,488,267	$ 22,207,333

Property, plant and equipment32

Property, plant and equipment, net (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Cost
Construction in progress	$ 814,911	$ 715,188
Furniture, fixtures and office equipment	4,615,273	4,025,635
Leasehold improvement	6,458,733	5,865,909
Machinery and equipment	30,313,242	27,526,572
Motor vehicles	1,573,570	1,496,628
Buildings	22,419,779	21,797,158
Property, plant and equipment, cost	66,195,508	61,427,090
Less: accumulated depreciation	20,027,952	17,922,099
Property, plant and equipment, net	$ 46,167,556	$ 43,504,991

Property, plant and equipment33

Property, plant and equipment, net (Details Textual) - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Depreciation	$ 2,361,482	$ 2,415,561
Property, Plant and Equipment, Transfers and Changes	$ 85,571	$ 26,988	$ 229,951

Long-term investment (Details T

Long-term investment (Details Textual) ¥ in Millions	Jun. 08, 2017CNY (¥)shares	May 05, 2017USD ($)shares	May 05, 2017CNY (¥)shares	Jul. 27, 2017USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2016CNY (¥)
Income (Loss) from Equity Method Investments					$ (41,607)	$ 0	$ 105,325	$ 0
Sale of Stock, Consideration Received on Transaction | ¥			¥ 71
Investment Income, Interest					$ 491,325
Yipeng Energy Technology Co. Ltd [Member]
Equity Method Investments									$ 9,600,000	¥ 65
Equity Method Investment, Ownership Percentage					28.32%		28.32%		35.40%	35.40%
Percentage of Subsidiary Equity Interest Sold		20.00%	20.00%
Sale of Stock, Consideration Received on Transaction	¥ 60	$ 10,500,000	¥ 60
Sale of Stock, Percentage of Ownership before Transaction		35.40%	35.40%
Sale of Stock, Percentage of Ownership after Transaction		4.654%	4.654%	4.654%
Investment Income, Interest				$ 1,600,000
Sale of Stock, Number of Shares Issued in Transaction | shares		25,145,834	25,145,834
New Power [Member]
Sale of Stock, Number of Shares Issued in Transaction | shares	25,145,834

Taxation (Details)

Taxation (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Schedule Of Taxation [Line Items]
Current	$ 456,583	$ 111,867	$ 919,800	$ 274,488
Deferred	139,125	62,446	263,673	(64,671)
Income tax expenses	$ 595,708	$ 174,313	$ 1,183,473	$ 209,817

Taxation (Details 1)

Taxation (Details 1) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Schedule Of Taxation [Line Items]
Income before tax	$ 5,057,908	$ 2,047,426	$ 8,258,215	$ 1,606,801
Provision for income taxes at applicable income tax rate	1,267,859	512,993	2,071,191	409,393
Effect of preferential tax rate	(397,140)	(116,208)	(788,983)	(139,878)
R&D expenses eligible for super deduction	(442,939)	(555,531)	(442,939)	(555,531)
Non-deductible expenses	17,448	96,716	33,995	114,336
Change in valuation allowance	150,480	236,343	310,209	381,497
Income tax expenses	$ 595,708	$ 174,313	$ 1,183,473	$ 209,817

Taxation (Details 2)

Taxation (Details 2) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Schedule Of Taxation [Line Items]
Tax loss carry-forward	$ 4,330,451	$ 4,274,881
Allowance for doubtful receivables	125,037	121,932
Impairment for inventory	119,315	98,276
Difference for sales cut-off	731	14,245
Deferred income	133,823	114,224
Property, plant and equipment subsidized by government grant	475,064	468,313
Impairment for property, plant and equipment	58,779	76,248
Total gross deferred tax assets	5,243,200	5,168,119
Valuation allowance	(3,994,974)	(3,690,358)
Total net deferred tax assets	$ 1,248,226	$ 1,477,761

Taxation (Details Textual)

Taxation (Details Textual)	6 Months Ended
	Jun. 30, 2017
Schedule Of Taxation [Line Items]
Value Added Tax Percentage Of Revenue	17.00%
Operating Losses Carryforward Expiration Date	2018 through 2021
SZ Highpower, ICON and GZ Highpower [Member]
Schedule Of Taxation [Line Items]
Effective Income Tax Rate Reconciliation, Percent	25.00%
HZ HTC and SZ Springpower [Member]
Schedule Of Taxation [Line Items]
Effective Income Tax Rate Reconciliation, Percent	15.00%
HONG KONG
Schedule Of Taxation [Line Items]
Corporate Income Tax Percentage	16.50%
CHINA
Schedule Of Taxation [Line Items]
Income Tax Exemption Percentage	15.00%
CHINA | National High-tech Enterprise [Member]
Schedule Of Taxation [Line Items]
Income Tax Exemption Percentage	15.00%
Income Tax Exemption Percentage After Expiration	25.00%
Maximum [Member]
Schedule Of Taxation [Line Items]
Graduated Tax Rate Percentage	35.00%
Minimum [Member]
Schedule Of Taxation [Line Items]
Graduated Tax Rate Percentage	15.00%

Notes payable (Details Textual)

Notes payable (Details Textual) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
Short-term Bank Loans and Notes Payable	$ 41,373,724	$ 30,658,000

Short-term loans (Details Textu

Short-term loans (Details Textual) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Short-term Debt [Line Items]
Pledged Assets Not Separately Reported Property Plant And Equipment	$ 11,995,138		$ 11,995,138		$ 11,854,452
Interest Expense, Short-term Borrowings, Total	277,319	$ 215,485	537,156	$ 422,593
Bank Time Deposits [Member]
Short-term Debt [Line Items]
Restricted Cash and Cash Equivalents	$ 154,931		$ 154,931		$ 151,083
Minimum [Member]
Short-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.35%		4.35%		4.35%
Maximum [Member]
Short-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.655%		5.655%		5.87%
Short-term Debt [Member]
Short-term Debt [Line Items]
Guarantor Obligations, Liquidation Proceeds, Monetary Amount			$ 3,670,645		$ 3,622,435

Non-financial institution bor41

Non-financial institution borrowings (Details Textual) ¥ in Millions	1 Months Ended						3 Months Ended		6 Months Ended
	May 31, 2017USD ($)	May 31, 2017CNY (¥)	Jan. 31, 2017USD ($)	Jan. 31, 2017CNY (¥)	May 31, 2016USD ($)	May 31, 2016CNY (¥)	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2017USD ($)	Mar. 31, 2017CNY (¥)	Oct. 31, 2016USD ($)	Oct. 31, 2016CNY (¥)	Apr. 30, 2016USD ($)	Apr. 30, 2016CNY (¥)
Proceeds from Other Short-term Debt									$ 10,200,959	$ 4,586,455
Other Debt Obligations [Member]
Debt Instrument, Interest Rate, Effective Percentage	5.655%	5.655%					5.66%		5.66%
Interest Expense, Debt							$ 154,235	$ 32,905	$ 297,753	$ 32,905
Debt Instrument, Face Amount											$ 2,360,857	¥ 16	$ 590,214	¥ 4	$ 2,951,071	¥ 20
Proceeds from Other Short-term Debt	$ 1,475,536	¥ 10	$ 8,853,214	¥ 60	$ 1,475,536	¥ 10

Earnings per share (Details)

Earnings per share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator:
Net income attributable to the Company	$ 4,371,237	$ 2,051,782	$ 6,906,886	$ 1,709,174
Weighted-average shares outstanding
- Basic	15,317,101	15,101,679	15,218,820	15,101,679
- Dilutive effects of equity incentive awards	162,256	1,198	85,953	2,207
- Diluted	15,479,357	15,102,877	15,304,773	15,103,886
Net income per share:
- Basic	$ 0.29	$ 0.14	$ 0.45	$ 0.11
- Diluted	$ 0.28	$ 0.14	$ 0.45	$ 0.11

Earnings per share (Details Tex

Earnings per share (Details Textual) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	540,001	1,701,927	685,001	1,701,927

Defined contribution plan (Deta

Defined contribution plan (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Defined Contribution Plan, Cost Recognized	$ 620,577	$ 419,105	$ 1,125,097	$ 754,663

Commitments and contingencies (

Commitments and contingencies (Details Textual) - shares	Feb. 04, 2016	Jan. 14, 2016
Commitments and Contingencies Disclosure [Line Items]
Loss Contingency Damages, Shares		150,000
Loss Contingency, Actions Taken by Defendant	return of the 200,000 warrants and 150,000 shares of Highpower stock previously issued to FirsTrust, plus interest, attorneys’ fees and costs and expenses. On January 24, 2017, the court denied FirsTrust’s motion for judgment on the pleadings. The parties are continuing with pre-trial discovery, as well as settlement discussions. The Company believes that it has meritorious defenses and counterclaims and intends to defend and prosecute them vigorously.

Segment information (Details)

Segment information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Net sales	$ 51,699,930	$ 36,732,310	$ 93,566,778	$ 65,829,365
Cost of Sales	39,628,164	29,088,639	71,560,178	52,308,655
Gross profit	12,071,766	7,643,671	22,006,600	13,520,710
Lithium Batteries [Member]
Segment Reporting Information [Line Items]
Net sales	37,009,048	23,666,887	64,499,542	38,981,832
Cost of Sales	28,310,375	18,857,605	49,950,244	31,364,936
Gross profit	8,698,673	4,809,282	14,549,298	7,616,896
Ni-MH Batteries [Member]
Segment Reporting Information [Line Items]
Net sales	11,783,901	11,972,810	24,311,214	24,829,135
Cost of Sales	9,013,125	8,869,549	18,201,515	18,475,355
Gross profit	2,770,776	3,103,261	6,109,699	6,353,780
New Materials [Member]
Segment Reporting Information [Line Items]
Net sales	2,906,981	1,092,613	4,756,022	2,018,398
Cost of Sales	2,304,664	1,361,485	3,408,419	2,468,364
Gross profit	$ 602,317	$ (268,872)	$ 1,347,603	$ (449,966)

Segment information (Details 1)

Segment information (Details 1) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total Assets	$ 188,150,900	$ 163,331,750
Lithium Batteries [Member]
Segment Reporting Information [Line Items]
Total Assets	129,591,163	115,116,508
Ni-MH Batteries [Member]
Segment Reporting Information [Line Items]
Total Assets	46,881,968	37,994,369
New Materials [Member]
Segment Reporting Information [Line Items]
Total Assets	$ 11,677,769	$ 10,220,873

Segment information (Details 2)

Segment information (Details 2) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 51,699,930	$ 36,732,310	$ 93,566,778	$ 65,829,365
China Mainland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	32,086,138	28,855,932	54,247,730	37,385,011
Asia, others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	12,092,612	6,295,056	25,788,170	18,275,423
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	3,612,677	208,548	8,465,407	6,524,327
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	3,604,935	1,285,688	4,663,067	2,919,834
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	205,549	14,074	267,286	478,971
Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	55,567	25,968	55,567	50,001
Others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 42,452	$ 47,044	$ 79,551	$ 195,798

Segment information (Details 3)

Segment information (Details 3) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	$ 42,737,207	$ 46,280,769
China Mainland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	29,275,047	29,663,633
Asia, others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	10,496,258	10,441,358
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	2,507,947	3,875,979
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	423,027	2,260,840
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	15,803	26,610
Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	378	378
Others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Accounts receivable	$ 18,747	$ 11,971

Related party balance and tra50

Related party balance and transaction (Details) - USD ($)		Jun. 30, 2017	Dec. 31, 2016
Due from Related Parties, Current		$ 2,465,325	$ 7,517,250
Due to Related Parties, Current		62,204	1,522,313
Accounts Payable [Member]
Due to Related Parties, Current	[1]	54,884	1,516,557
Other Payable [Member]
Due to Related Parties, Current		7,320	5,756
Accounts Receivable [Member]
Due from Related Parties, Current		2,457,684	7,125,140
Other Receivable [Member]
Due from Related Parties, Current		$ 7,641	$ 392,110
[1]	Accounts payable represented $nil and $1.3 million technical support fee and $54,884 and $0.2 million equipment rental fee to Yipeng as of June 30, 2017 and December 31, 2016, respectively.

Related party balance and tra51

Related party balance and transaction (Details1) - USD ($)	2 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2017
Income:
Sales	$ 1,264,934	$ 1,422,533	$ 2,046,856
Rental income	0	7,012	18,311
Expenses:
Equipment rental fees	$ 0	$ 162,927	$ 325,229

Related party balance and tra52

Related party balance and transaction (Details Textual) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Technical Support Fee Payable [Member]
Accounts Payable, Related Parties, Current	$ 0	$ 1,300,000
Equipment Rental Fee Payable [Member]
Accounts Payable, Related Parties, Current	$ 54,884	$ 200,000

Subsequent event (Details Textu

Subsequent event (Details Textual) - USD ($)	May 05, 2017	Jul. 27, 2017	Jun. 30, 2017
Subsequent Event [Line Items]
Investment Income, Interest			$ 491,325
Yipeng Energy Technology Co. Ltd [Member]
Subsequent Event [Line Items]
Sale of Stock, Percentage of Ownership after Transaction	4.654%	4.654%
Investment Income, Interest		$ 1,600,000