Annual report pursuant to Section 13 and 15(d)

Commitments and contingencies (Details Textual)

v3.7.0.1
Commitments and contingencies (Details Textual) - USD ($)
12 Months Ended
Feb. 04, 2016
Dec. 31, 2016
Dec. 31, 2015
Jan. 14, 2016
Commitments and Contingencies Disclosure [Line Items]        
Operating Leases, Rent Expense   $ 1,858,577 $ 1,639,444  
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.      
Minimum [Member]        
Commitments and Contingencies Disclosure [Line Items]        
Lease Expiration Year     2017  
Maximum [Member]        
Commitments and Contingencies Disclosure [Line Items]        
Lease Expiration Year     2021