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Principal Activities, Basis of Presentation and Organization (Details)
 1 Months Ended 3 Months Ended
Feb. 08, 2021
Dec. 08, 2020
Nov. 11, 2020
Nov. 05, 2020
Oct. 20, 2020
Oct. 12, 2020
Aug. 06, 2020
USD ($)
Jul. 08, 2020
May 13, 2020
Apr. 10, 2020
Oct. 10, 2019
Aug. 05, 2019
USD ($)
Jan. 07, 2019
USD ($)
$ / shares
shares
Mar. 04, 2016
$ / shares
shares
Jul. 31, 2020
USD ($)
May 27, 2020
Dec. 30, 2019
USD ($)
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
Mar. 31, 2021
USD ($)
shares
Dec. 31, 2020
USD ($)
shares
Aug. 06, 2020
CNY (¥)
Oct. 29, 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 ($)
May 04, 2018
CNY (¥)
May 17, 2017
USD ($)
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]                                                                                                      
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                                                      
Common stock equivalent percentage                                                       50.00%                                              
Transfer of related shares, description                                                       As the Company has transferred the 217,955 shares related to the 2006 performance threshold to the relevant investors in fiscal year 2007 and the Company also have transferred 73,749 shares relating to the 2005 performance threshold to the investors who had entered the “2008 Settlement Agreements” with us in fiscal year 2008, pursuant to “Li Settlement Agreement” and “2008 Settlement Agreements”, neither Mr. Li nor the Company had any remaining obligations to those related investors who participated in the Company’s January 2005 private placement relating to the escrow shares.                                              
Registered capital of subsidiary                       $ 5,000,000                                                                              
Cash                       2,435,000                                                                              
Subsidiaries consisted, description                                                       i) China BAK Asia Holdings Limited (“BAK Asia”), a wholly owned limited liability company incorporated in Hong Kong on July 9, 2013; ii) Dalian CBAK Trading Co., Ltd. (“CBAK Trading”), a wholly owned limited company established on August 14, 2013 in the PRC; iii) Dalian CBAK Power Battery Co., Ltd. (“CBAK Power”), a wholly owned limited liability company established on December 27, 2013 in the PRC; iv) CBAK New Energy (Suzhou) Co., Ltd. (“CBAK Suzhou”), a 90% owned limited liability company established on May 4, 2018 in the PRC; v) Dalian CBAK Energy Technology Co., Ltd (“CBAK Energy”), a wholly owned limited liability company established on November 21, 2019 in the PRC; (vi) BAK Asia Investments Limited (“BAK Investments”), a wholly owned limited liability company incorporated in Hong Kong acquired on July 14, 2020; (vii) CBAK New Energy (Nanjing) Co., Ltd. (“CBAK Nanjing”), a wholly owned limited liability company established on July 31, 2020 in the PRC; (viii) Nanjing CBAK New Energy Technology Co., Ltd, (“Nanjing CBAK”), a wholly owned limited liability company established on August 6, 2020 in the PRC and (ix) Nanjing Daxin New Energy Automobile Industry Co., Ltd (“Nanjing Daxin”), a wholly owned limited liability company established on November 9, 2020.                                              
Exchange price per share (in Dollars per share) | $ / shares                                     $ 1.05                                                                
Common stock shares outstanding (in Shares) | shares                                                       88,106,019 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            
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                                                          
Agreement CBAK Power, description                   On April 10, 2020, each of Mr. Yunfei Li, Mr. Ping Shen and Asia EVK entered into an agreement with CBAK Power and Shenzhen BAK, whereby Shenzhen BAK assigned its rights to the unpaid inventories cost (note 7) owed by CBAK Power of approximately $1.0 million (RMB7,000,000), $2.3 million (RMB16,000,000) and $1.0 million (RMB7,300,000) (collectively $4.3 million, the “Sixth Debt”) to Mr. Yunfei Li, Mr. Ping Shen and Asia EVK, respectively.                                   In 2019, according to the investment agreements and agreed by the investors, the Company returned partial earnest money of $966,579 (approximately RMB6.7 million) to these investors.                                              
Debt amount                                                       $ 13,700,000                                              
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.     On July 8, 2020, the Company entered into a First exchange agreement for Note II (the “First Exchange Agreement- Note II”) with Atlas Sciences, LLC (the “Lender”), pursuant to which the Company and the Lender agreed to (i) partition a new promissory note in the original principal amount equal to $250,000 (the “Partitioned Promissory Note”) from the outstanding balance of certain promissory note that the Company issued to the Lender on December 30, 2019, which has an original principal amount of $1,670,000, and (ii) exchange the Partitioned Promissory Note for the issuance of 453,161 shares of the Company’s common stock, par value $0.001 per share to the Lender.                       Pursuant to the terms of the cancellation agreement, Mr. Shangdong Liu, Mr. Shibin Mao, Ms. Lijuan Wang and Mr. Ping Shen agreed to cancel and convert the Fifth Debt and the Unpaid Earnest Money of approximately $1 million (RMB6,720,000) in exchange for 528,053, 3,536,068, 2,267,798 and 2,267,798 shares of common stock of the Company, respectively, at an exchange price of $0.6 per share.                                                              
Cancellation agreement, description                               Pursuant to the terms of the cancellation agreement, Mr. Yunfei Li, Mr. Ping Shen and Asia EVK agreed to cancel the Sixth Debt in exchange for 2,062,619, 4,714,557 and 2,151,017 shares of common stock of the Company, respectively, at an exchange price of $0.48 per share.                                                                      
Amendment to promissory notes, description                 According to the Amendment, on October 13, 2020, the Company exchange $230,000 in principal and $141,275 coupon interest under the Note I and $775,000 principal under the Note II for the issuance of 229,750 and 479,579 shares of the Company’s common stock, par value $0.001 per share to the Lender, respectively.                                                                                    
Other current liabilities                                                       36,400,000                                              
Unutilized committed amount                                                       $ 4,900,000                                              
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.                                                                                          
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                                                              
Second Debt [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Debt amount                                         $ 5,400,000                                                            
Third Debt [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Debt amount                                                                   $ 3,900,000                                  
Fourth Debt [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Debt amount                                                               $ 3,200,000                                      
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 $20,719,925 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                             $ 49,989,915                                                                        
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                                          
China BAK Asia Holding Limited [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 RMB290,378,836 (approximately $44.3 million) to Nanjing CBAK.                                                                                        
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                                          
Company contribution related, description             Up to the date of this report, the Company has contributed RMB10,000,000 (approximately $1.53 million) to Nanjing Daxin.                                                                                        
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                           10,785,872                                              
Sale of stock, percentage of ownership after transaction                           17.30%                           12.20%                                              
Debt amount                         $ 1,700,000                                               ¥ 11,647,890                            
Mr.Yunfei Li [Member] | First Debt [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Debt amount                         $ 5,100,000                                                                            
Mr.Yunfei Li [Member] | First Debt [Member] | Cancellation Agreement [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Cancel debt exchange in to common stock (in Shares) | shares                         1,666,667                                                                            
Mr.Yunfei Li [Member] | Third Debt [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Debt amount                                                                   2,500,000 ¥ 18,000,000                                
Mr.Yunfei Li [Member] | Fourth Debt [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                                                                
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                            
Mr. Dawei Li [Member] | First Debt [Member] | Cancellation Agreement [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                                                                            
Mr. Dawei Li [Member] | Third Debt [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                                                                
Mr. Jun Lang [Member] | Second Debt [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Debt amount                                         $ 300,000                             ¥ 2,225,082                              
Mr. Jun Lang [Member] | Second Debt [Member] | Cancellation Agreement [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Exchange price per share (in Dollars per share) | $ / shares                                         $ 1.1                                                            
Mr. Jun Lang [Member] | Second Debt [Member] | CBAK Energy [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Cancel debt exchange in to common stock (in Shares) | shares                                         123,208                                                            
Ms. Jing Shi [Member] | Second Debt [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Debt amount                                         $ 100,000                             912,204                              
Ms. Jing Shi [Member] | Second Debt [Member] | CBAK Energy [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Cancel debt exchange in to common stock (in Shares) | shares                                         300,534                                                            
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                                                                
Asia EVK [Member] | Second Debt [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Debt amount                                         $ 5,000,000                             ¥ 35,406,036                              
Asia EVK [Member] | Second Debt [Member] | Cancellation Agreement [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Cancel debt exchange in to common stock (in Shares) | shares                                         4,782,163                                                            
Asia EVK [Member] | Fourth Debt [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Debt amount                                                               $ 2,800,000 ¥ 20,000,000                                    
Energy Vehicle Co., Ltd [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Company contribution related, description                     Mr. Shibin Mao, Ms. Lijuan Wang and Mr. Ping Shen entered into an agreement with CBAK Power and Zhengzhou BAK New Energy Vehicle Co., Ltd. (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.                                                                                
Tillicum Investment Company Limited [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
Agreement CBAK Power, description       On November 5, 2020, each of Tillicum Investment Company Limited, an unrelated party, entered into an agreement with CBAK Nanjing and Shenzhen ESTAR Industrial Company Limited, whereby Shenzhen ESTAR Industrial Company Limited assigned its rights to the unpaid equipment cost owed by CBAK Nanjing of approximately $11.17 million (RMB75,000,000) (the “Seventh Debt”) to Tillicum Investment Company Limited.                                                                                              
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.                                                                                                  
Securities Purchase Agreement [Member]                                                                                                      
Principal Activities, Basis of Presentation and Organization (Details) [Line Items]                                                                                                      
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.                                                                                                    
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%                      
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.