Non-controlling interest (Details Textual) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Subsidiary or Equity Method Investee [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interest	$ 0	$ 441,044
Ganzhou Highpower Technology Company Limited [Member]
Subsidiary or Equity Method Investee [Line Items]
Net Income (Loss) Attributable to Noncontrolling Interest		$ 441,044

Amount of Net Income (Loss) attributable to noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1B
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-Section 45
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