Concentrations and Credit Risk (Tables)

9 Months Ended

Sep. 30, 2019

Concentrations and Credit Risk [Abstract]

Schedule of revenue by major customers by reporting segments

	Three months ended September 30,
	2018				2019
Customer A	$	1,672,191	29.92	%	$	2,118,783	26.19	%
Customer B		2,081,697	37.24	%		*	*
Customer C		852,331	15.25	%		*	*
Customer D		*	*			2,264,415	27.99	%
Zhengzhou BAK Battery Co., Ltd		*	*			1,941,101	23.99	%

* Comprised less than 10% of net revenue for the respective period.

	Nine months ended September 30,
	2018				2019
Customer A	$	5,374,871	35.95	%	$	5,994,110	34.19	%
Customer B		2,081,697	13.92	%		*	*
Customer C		*	*			*	*
Customer D		*	*			3,330,675	19.00	%
Zhengzhou BAK Battery Co., Ltd		*	*			1,941,101	11.07	%

* Comprised less than 10% of net revenue for the respective period.

Schedule of accounts receivable by major customer

	December 31, 2018				September 30, 2019
Customer A	$	1,769,416	11.49	%	$	1,524,997	12.05	%
Customer C		2,293,257	14.89	%		2,206,467	17.44	%
Zhengzhou BAK Battery Co., Ltd		*	*			2,113,251	12.69	%
Customer E		4,283,023	27.82	%		*	*

* Comprised less than 10% of account receivable (net) for the respective period.

Schedule of transactions with the former subsidiaries

	Three months ended September 30,				Nine months ended September 30,
	2018		2019		2018		2019
Purchase of inventories from
BAK Shenzhen**	$	-	$	-	$	108,718	$	65,102
Zhengzhou BAK Battery Co., Ltd*		-		-		2,062,432		-
Zhengzhou BAK New Energy Vehicle Co., Ltd.#				3,838,213				3,838,213
Sales of finished goods to
BAK Tianjin		4,073		-		31,610		-
BAK Shenzhen**		-		-		-		769,052
Zhengzhou BAK Battery Co., Ltd*		-		1,941,101		-		1,941,101
Proceeds on disposal of patented proprietary technology offset against amount due to BAK Shenzhen (Note 6)**	$	13,034,583	$	-	$	13,034,583	$	-

*	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.
#	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.
**	Mr. Xiangqian Li, our former CEO, is a director of this company.