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Commitments and Contingencies (Narrative) (Details)					1 Months Ended						2 Months Ended	9 Months Ended
	Nov. 08, 2018 USD ($)	Nov. 08, 2018 CNY (¥)	Jul. 07, 2016 USD ($)	Jul. 07, 2016 CNY (¥)	Feb. 28, 2018 USD ($)	Feb. 28, 2018 CNY (¥)	Dec. 19, 2017 USD ($)	Dec. 19, 2017 CNY (¥)	Jun. 30, 2017 USD ($)	Jun. 30, 2017 CNY (¥)	May 31, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2018 CNY (¥)	Oct. 16, 2018 USD ($)	Oct. 16, 2018 CNY (¥)	Sep. 30, 2018 CNY (¥)	Dec. 31, 2017 USD ($)	Sep. 01, 2017 USD ($)	Sep. 01, 2017 CNY (¥)	May 31, 2017 CNY (¥)	Sep. 07, 2016 USD ($)	Sep. 07, 2016 CNY (¥)
Capital injection from BAK Asia to BAK Power											$ 9,495,974
Commitments and Contingencies												$ 0					$ 0
Shenzhen Huijie - July 7, 2016 [Member]
Loss Contingency, Damages Sought, Value			$ 1,227,583	¥ 8,430,792
Bank deposits frozen																		$ 1,227,583	¥ 8,430,792		$ 1,227,583	¥ 8,430,792
Shenzhen Huijie - July 7, 2016 [Member] | Construction costs [Member]
Loss Contingency, Damages Sought, Value			900,000	6,100,000
Litigation Settlement, Amount Awarded to Other Party	$ 1,330,186	¥ 9,129,868
Commitments and Contingencies												900,000				¥ 6,100,000
Payments for Legal Settlements												1,600,000	¥ 11,000,000
Shenzhen Huijie - July 7, 2016 [Member] | Interest [Member]
Loss Contingency, Damages Sought, Value			29,812	200,000
Shenzhen Huijie - July 7, 2016 [Member] | Compensation [Member]
Loss Contingency, Damages Sought, Value			$ 300,000	¥ 1,900,000
Shenzhen Huijie - July 7, 2016 [Member] | Remaining contract amount [Member]
Litigation Settlement, Amount Awarded to Other Party									$ 900,000	¥ 6,135,860
Shenzhen Huijie - July 7, 2016 [Member] | Other expenses [Member]
Litigation Settlement, Amount Awarded to Other Party									$ 100,000
Shenzhen Huijie - late February 2018 [Member]
Loss Contingency, Damages Sought, Value					$ 35,665	¥ 244,942
Commitments and Contingencies														$ 11,218	¥ 77,043
Shenzhen Huijie - late February 2018 [Member] | Construction costs [Member]
Loss Contingency, Damages Sought, Value					34,762	238,735
Shenzhen Huijie - late February 2018 [Member] | Interest [Member]
Loss Contingency, Damages Sought, Value					$ 904	¥ 6,207
Anyuan Bus [Member]
Gain Contingency, Unrecorded Amount											2,661,676									¥ 18,279,858
Litigation Settlement, Amount Awarded from Other Party												$ 2,537,639	¥ 17,428,000
Anyuan Bus [Member] | Goods amount [Member]
Gain Contingency, Unrecorded Amount											2,537,639									17,428,000
Litigation Settlement, Amount Awarded from Other Party							$ 2,537,639	¥ 17,428,000
Anyuan Bus [Member] | Interest [Member]
Gain Contingency, Unrecorded Amount											$ 124,037									¥ 851,858
Anyuan Bus [Member] | Litigation fee [Member]
Litigation Settlement, Amount Awarded from Other Party							$ 19,144	¥ 131,480

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