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Principal Activities, Basis of Presentation and Organization (Details)																					1 Months Ended																6 Months Ended
	Apr. 21, 2021 USD ($)	Apr. 21, 2021 CNY (¥)	Feb. 08, 2021	Dec. 08, 2020	Nov. 11, 2020	Nov. 09, 2020 USD ($)	Nov. 09, 2020 CNY (¥)	Oct. 20, 2020	Oct. 12, 2020	Aug. 06, 2020 USD ($)	Aug. 06, 2020 CNY (¥)	Jun. 10, 2020 USD ($) $ / shares shares	Jun. 08, 2020 USD ($) $ / shares shares	Oct. 14, 2019	Oct. 10, 2019	Jul. 06, 2019 USD ($) $ / shares shares	Jan. 07, 2019 USD ($) $ / shares shares	May 04, 2018 USD ($)	Mar. 04, 2016 $ / shares shares	Nov. 30, 2007 shares	Jul. 31, 2020 USD ($)	Jul. 29, 2020 USD ($) $ / shares shares	Apr. 28, 2020 USD ($) $ / shares shares	Feb. 20, 2020 USD ($) $ / shares shares	Jan. 27, 2020 USD ($) $ / shares shares	Dec. 30, 2019 USD ($)	Nov. 21, 2019 USD ($)	Jul. 26, 2019 $ / shares shares	Jul. 24, 2019 USD ($)	Apr. 26, 2019 USD ($) $ / shares shares	May 31, 2017 USD ($) $ / shares shares	Jun. 30, 2015 shares	Oct. 01, 2007 USD ($)	Sep. 30, 2006 shares	Dec. 31, 2005 shares	Jan. 20, 2005 USD ($) shares	Jun. 30, 2021 USD ($) shares	Jul. 20, 2021 USD ($)	Jul. 20, 2021 CNY (¥)	Dec. 31, 2020 USD ($) shares	Nov. 09, 2020 CNY (¥)	Aug. 06, 2020 CNY (¥)	Oct. 29, 2019 USD ($)	Aug. 05, 2019 USD ($)	Jul. 16, 2019 USD ($)	Jul. 16, 2019 CNY (¥)	Jun. 28, 2019 USD ($)	Jun. 28, 2019 CNY (¥)	Apr. 26, 2019 CNY (¥)	Jan. 07, 2019 CNY (¥)	Jul. 10, 2018 USD ($)	Jul. 08, 2018 USD ($)	May 04, 2018 CNY (¥)	May 10, 2017 USD ($)	Apr. 26, 2017 USD ($)	Apr. 21, 2017 USD ($)	Apr. 01, 2017 USD ($)	Jan. 31, 2017 USD ($)	Jul. 28, 2016 USD ($) $ / shares shares	Jun. 30, 2016 USD ($)	Sep. 29, 2015 USD ($) $ / shares shares	Jul. 31, 2015 USD ($)	Dec. 27, 2013 USD ($)	Aug. 14, 2013 USD ($)
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Exchange agreement, description								the Company further exchange $645,000 in principal and $133,252 coupon interests under Note II for the issuance of 329,768 shares of the Company’s common stock, par value $0.001 per share to the Lender. Up to the date of this report, the Company has fully repaid the principal and coupon interests of Note I and Note II.						The shares of the Company traded in the over-the-counter market through the Over-the-Counter Bulletin Board from 2005 until May 31, 2006, when the Company obtained approval to list its common stock on The NASDAQ Global Market, and trading commenced that same date under the symbol “CBAK”.
Shares of common stock (in Shares) | shares																															6,403,518					1,720,087
Gross proceeds of common stock																																				$ 17,000,000	$ 15,630,011
Shares placed in escrow (in Shares) | shares																																				435,910
Escrow agreement, description																																				Pursuant to the Escrow Agreement, 50% of the escrowed shares were to be released to the investors in the private placement if audited net income of the Company for the fiscal year ended September 30, 2005 was not at least $12,000,000, and the remaining 50% was to be released to investors in the private placement if audited net income of the Company for the fiscal year ended September 30, 2006 was not at least $27,000,000. If the audited net income of the Company for the fiscal years ended September 30, 2005 and 2006 reached the above-mentioned targets, the 435,910 shares would be released to Mr. Li in the amount of 50% upon reaching the 2005 target and the remaining 50% upon reaching the 2006 target.
Shares released from escrow (in Shares) | shares																																73,749		217,955	217,955		217,955
Adjustments of additional paid in capital																																	$ 7,955,358
Shares issued (in Shares) | shares																				217,955
Common stock equivalent percentage																																					50.00%
Transferred shares (in Shares) | shares																																					73,749
Registered capital of subsidiary																																												$ 5,000,000
Cash																																						$ 6,310,000	¥ 40,740,000					$ 2,435,000
Ownership percentage of equity method investment																																					81.56%	81.56%	81.56%
Investment amount paid	$ 1,400,000	¥ 9,000,000
Investment acquire percentage	9.74%	9.74%
Exchange price per share (in Dollars per share) | $ / shares																												$ 1.05
Common stock shares outstanding (in Shares) | shares																																					88,394,517			79,166,043
Working capital																																								$ 10,500,000
Receive advance amount																																																														$ 9,800,000
Principal amount																																																													$ 9,847,644
Aggregate share (in Shares) | shares																																																											2,206,640		4,376,731
Conversion price per share (in Dollars per share) | $ / shares																																																													$ 2.25
Further advance amount																																																				$ 2,600,000								$ 2,900,000
Common stock per share (in Dollars per share) | $ / shares																																																											$ 2.5
Aggregate consideration amount																																																											$ 5,520,000
Investment total																																																											$ 10,000,000
Inventory paid total																																																										$ 2,060,000.00
Common stock value subscriptions																																																										1,120,000
Proceeds from received investment																																																						$ 2,985,497	$ 1,119,982	$ 3,499,888	$ 1,999,910	$ 225,784
Purchase price per share (in Dollars per share) | $ / shares																															$ 1.50
Aggregate price amount																															$ 9,600,000
Share issued (in Shares) | shares																															746,018
Debt amount
Other current liabilities																																					$ 39,300,000
Energy Vehicle Co., Ltd [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Company contribution related, description															(the Company’s supplier of which Mr. Xiangqian Li, the former CEO, is a director of this company) whereby Zhengzhou BAK New Energy Vehicle Co., Ltd. assigned its rights to the unpaid inventories cost owed by CBAK Power of approximately $2.1 million (RMB15,000,000), $1.0 million (RMB7,380,000) and $1.0 million (RMB7,380,000) (collectively $4.2 million, the “Fifth Debt”) to Mr. Shibin Mao, Ms. Lijuan Wang and Mr. Ping Shen, respectively.
Mr.Yunfei Li [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Exchange price per share (in Dollars per share) | $ / shares																			$ 2.4
Common stock shares outstanding (in Shares) | shares																			3,000,000																		10,852,539
Sale of stock, percentage of ownership after transaction																			17.30%																		12.30%
Debt amount																	$ 1,700,000																																	¥ 11,647,890
Mr. Xiangqian Li [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Common stock shares outstanding (in Shares) | shares																			760,557
Sale of stock, percentage of ownership after transaction																			4.40%
Mr. Dawei Li [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																	3,400,000																																	¥ 23,980,950
Asia EVK [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Cancel debt exchange in to common stock (in Shares) | shares																												2,769,435
Tillicum Investment Company Limited [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Cancellation agreement with creditors, description					Pursuant to the terms of the cancellation agreement, Tillicum Investment Company Limited agreed to cancel the Seventh Debt in exchange for 3,192,291 shares of common stock of the Company, at an exchange price of $3.5 per share. Upon receipt of the shares, the creditor released the Company from any claims, demands and other obligations relating to the Seventh Debt.
Investors [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Securities purchase agreement, description				the Company entered into a securities purchase agreement with certain institutional investors, pursuant to which the Company issued in a registered direct offering, an aggregate of 9,489,800 shares of common stock of the Company at a per share purchase price of $5.18, and warrants to purchase an aggregate of 3,795,920 shares of common stock of the Company at an exercise price of $6.46 per share exercisable for 36 months from the date of issuance, for gross proceeds of approximately $49.16 million, before deducting fees to the placement agent and other offering expenses of $3.81 million. In addition, the placement agent for this transaction also received warrants (“Placement Agent Warrants”) for the purchase of up to 379,592 shares of the Company’s common stock at an exercise price of $6.475 per share exercisable for 36 months after 6 months from the issuance.
CBAK Energy [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Company contribution related, description																											Up to the date of this report, the Company has contributed $23,519,972 to CBAK Energy.
Registered capital increased																											$ 50,000,000
CBAK Energy Nanjing [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Registered capital of subsidiary																					$ 100,000,000
Contributed amount																					$ 55,289,915
CBAK New Energy Technology Co Ltd [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Registered capital of subsidiary										$ 107,000,000																																¥ 700,000,000
Contributed amount										$ 47,400,000	¥ 306,418,836
Nanjing Daxin New Energy Automobile Industry Co Ltd [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Registered capital of subsidiary						$ 7,600,000																																			¥ 50,000,000
Contributed amount						$ 2,540,000	¥ 16,416,000
First Debt [Member] | Mr.Yunfei Li [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																	$ 5,100,000
Second Debt [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																														$ 5,400,000
Second Debt [Member] | Mr. Jun Lang [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																														300,000																			¥ 2,225,082
Second Debt [Member] | Ms. Jing Shi [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																														100,000																			912,204
Second Debt [Member] | Asia EVK [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																														$ 5,000,000.0																			¥ 35,406,036
Third Debt [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																																															$ 3,900,000
Third Debt [Member] | Mr.Yunfei Li [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																																															2,500,000	¥ 18,000,000
Third Debt [Member] | Mr. Dawei Li [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																																															$ 1,400,000	¥ 10,000,000
Cancel debt exchange in to common stock (in Shares) | shares																												1,384,717
Fourth Debt [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																																													$ 3,200,000
Fourth Debt [Member] | Mr.Yunfei Li [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																																													400,000	¥ 2,813,810
Cancel debt exchange in to common stock (in Shares) | shares																												2,938,067
Fourth Debt [Member] | Asia EVK [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Debt amount																																													$ 2,800,000	¥ 20,000,000
China BAK Asia Holding Limited [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Registered capital of subsidiary																																																																$ 500,000
CBAK Power [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Registered capital of subsidiary																																											$ 60,000,000								$ 50,000,000												$ 30,000,000
Cash																																											$ 60,000,000
Suzhou [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Registered capital of subsidiary																		$ 1,500,000																																			¥ 10,000,000
Ownership percentage of equity method investment																		90.00%																																			90.00%
Equity interest percentage																		10.00%
Company contribution related, description																		Up to the date of this report, the Company has contributed RMB9.0 million (approximately $1.3 million), and the other shareholders have contributed RMB1.0 million (approximately $0.1 million) to CBAK Suzhou through injection of a series of cash. The Company plan to dissolve CBAK Suzhou in 2021.
Promissory Notes [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Amendment to promissory notes, description									the Company entered into an Amendment to Promissory Notes (the “Amendment”) with Atlas Sciences, LLC (the Lender), pursuant to which the Lender has the right at any time until the outstanding balance of the Notes has been paid in full, at its election, to convert all or any portion of the outstanding balance of the Notes into shares of common stock of the Company. The conversion price for each conversion will be calculated pursuant to the following formula: 80% multiplied by the lowest closing price of the Company common stock during the ten (10) trading days immediately preceding the applicable conversion (the “Conversion Price”). Notwithstanding the foregoing, in no event will the Conversion Price be less than $1.00.
Cancellation Agreement [Member] | First Debt [Member] | Mr.Yunfei Li [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Cancel debt exchange in to common stock (in Shares) | shares																	1,666,667
Cancellation Agreement [Member] | First Debt [Member] | Mr. Dawei Li [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Exchange price per share (in Dollars per share) | $ / shares																	$ 1.02
Cancel debt exchange in to common stock (in Shares) | shares																	3,431,373
Cancellation Agreement [Member] | Second Debt [Member] | Mr. Jun Lang [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Exchange price per share (in Dollars per share) | $ / shares																														$ 1.1
Cancellation Agreement [Member] | Second Debt [Member] | Asia EVK [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Cancel debt exchange in to common stock (in Shares) | shares																														4,782,163
Securities Purchase Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Original principal amount																										$ 1,670,000			$ 1,395,000
Bears interest rate																										10.00%			10.00%
Received proceeds																										$ 1,500,000			$ 1,250,000
Original issue discount																										150,000			125,000
Lender's expenses																										$ 20,000			20,000
Securities purchase agreement, description			the Company entered into another securities purchase agreement with the same investors, pursuant to which the Company issued in a registered direct offering, an aggregate of 8,939,976 shares of common stock of the Company at a per share purchase price of $7.83. In addition, the Company issued to the investors (i) in a concurrent private placement, the Series A-1 warrants to purchase a total of 4,469,988 shares of common stock, at a per share exercise price of $7.67 and exercisable for 42 months from the date of issuance; (ii) in the registered direct offering, the Series B warrants to purchase a total of 4,469,988 shares of common stock, at a per share exercise price of $7.83 and exercisable for 90 days from the date of issuance; and (iii) in the registered direct offering, the Series A-2 warrants to purchase up to 2,234,992 shares of common stock, at a per share exercise price of $7.67 and exercisable for 45 months from the date of issuance. The Company received gross proceeds of approximately $70 million from the registered direct offering and the concurrent private placement, before deducting fees to the placement agent and other offering expenses of $5.0 million. In addition, the placement agent for this transaction also received warrants (“Placement Agent Warrants”) for the purchase of up to 446,999 shares of the Company’s common stock at an exercise price of $9.204 per share exercisable for 36 months after 6 months from the issuance.
The First Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
The original principal amount of promissory note																									$ 1,395,000				100,000
Issuance promissory Note (in Shares) | shares																									160,256
The Second Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
The original principal amount of promissory note																								$ 1,395,000					100,000
Issuance promissory Note (in Shares) | shares																								207,641
Common stock par value (in Dollars per share) | $ / shares																								$ 0.001
Third Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
The original principal amount of promissory note																							$ 1,395,000						100,000
Issuance promissory Note (in Shares) | shares																							312,500
Fourth Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
The original principal amount of promissory note													$ 1,395,000																100,000
Issuance promissory Note (in Shares) | shares													271,739
Fifth Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
The original principal amount of promissory note												$ 1,395,000																	150,000
Issuance promissory Note (in Shares) | shares												407,609
Sixth Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
The original principal amount of promissory note																$ 1,395,000													250,000
Issuance promissory Note (in Shares) | shares																461,595
Seventh Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
The original principal amount of promissory note																						$ 1,395,000							$ 365,000
Issuance promissory Note (in Shares) | shares																						576,802
Common Stock [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Shares of common stock (in Shares) | shares																																					8,939,976
Gross proceeds of common stock																																					$ 8,940
Common Stock [Member] | The First Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Common stock par value (in Dollars per share) | $ / shares																									$ 0.001
Common Stock [Member] | Third Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Common stock par value (in Dollars per share) | $ / shares																							$ 0.001
Common Stock [Member] | Fourth Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Common stock par value (in Dollars per share) | $ / shares													$ 0.001
Common Stock [Member] | Fifth Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Common stock par value (in Dollars per share) | $ / shares												$ 0.001
Common Stock [Member] | Sixth Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Common stock par value (in Dollars per share) | $ / shares																$ 0.001
Common Stock [Member] | Seventh Exchange Agreement [Member]
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]
Common stock par value (in Dollars per share) | $ / shares																						$ 0.001

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