Quarterly report pursuant to Section 13 or 15(d)

Inventories - Textual (Details)

v3.8.0.1
Inventories - Textual (Details) - USD ($)
9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Inventory [Line Items]    
Write-down of inventory $ 703,220 $ 73,521
End-of-life, legacy 125kW and IBC-30 battery converters    
Inventory [Line Items]    
Write-down of inventory $ 699,243