Quarterly report pursuant to Section 13 or 15(d)

Segment information (Details 1)

v3.7.0.1
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