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Concentrations and Credit Risk (Details 2) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Sales of finished goods $ 8,089,804 $ 5,589,371 $ 17,532,415 $ 14,952,470
Proceeds on disposal of patented proprietary technology offset against amount due to a former subsidiary (Note 6) 13,034,583 13,034,583
Bak Shenzhen [Member]        
Purchase of inventories [1] 65,102 108,718
Sales of finished goods [1]
Zhengzhou BAK Battery Co., Ltd [Member]        
Purchase of inventories [2] 2,062,432
Sales of finished goods [2] 1,941,101 1,941,101
BAK Tianjin [Member]        
Sales of finished goods 4,073 31,610
Zhengzhou BAK New Energy Vehicle Co. Ltd [Member]        
Purchase of inventories [3] $ 3,838,213 $ 3,838,213
[1] Mr. Xiangqian Li, our former CEO, is a director of this company.
[2] Mr. Xiangqian Li, the former CEO, is a director of this company. As of September 30, 2019 and December 31, 2018, payable to Zhengzhou BAK Battery Co., Ltd were $2,219,441 and $2,291,261, respectively, was included in trade accounts and bills payable and $2,113,251 and nil was included in trade accounts and bills receivable, net.
[3] Mr. Xiangqian Li, the former CEO, is a director of this company. As of September 30, 2019 and December 31, 2018, payable to Zhengzhou BAK New Energy Vehicle Co., Ltd were $4,162,895 and nil, respectively, was included in trade accounts and bills payable.