Annual report pursuant to Section 13 and 15(d)

Segment information (Details 1)

v3.7.0.1
Segment information (Details 1) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Segment Reporting Information [Line Items]    
Total Assets $ 163,331,750 $ 134,204,484
Lithium Batteries [Member]    
Segment Reporting Information [Line Items]    
Total Assets 115,116,508 82,006,317
Ni-MH Batteries [Member]    
Segment Reporting Information [Line Items]    
Total Assets 37,994,369 41,590,201
New Materials [Member]    
Segment Reporting Information [Line Items]    
Total Assets $ 10,220,873 $ 10,607,966