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Loans (Details Textual) |  |  |  | 1 Months Ended | 3 Months Ended |  |  |  |  |  |  |  |  |  |  |
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Jan. 07, 2019 | Dec. 10, 2018 USD ($) | Dec. 10, 2018 CNY (¥) | Jun. 04, 2018 | Apr. 26, 2019 | Jan. 31, 2019 | Nov. 30, 2018 USD ($) | Nov. 30, 2018 CNY (¥) | Sep. 30, 2018 CNY (¥) | Mar. 31, 2019 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 CNY (¥) | Nov. 30, 2018 CNY (¥) | Nov. 09, 2018 | Oct. 17, 2018 USD ($) | Oct. 17, 2018 CNY (¥) | Aug. 31, 2018 USD ($) | Aug. 31, 2018 CNY (¥) | Aug. 22, 2018 USD ($) | Aug. 22, 2018 CNY (¥) | Nov. 09, 2017 USD ($) | Nov. 09, 2017 CNY (¥) | Aug. 02, 2017 USD ($) | Aug. 02, 2017 CNY (¥) | Jul. 05, 2017 USD ($) | Jun. 05, 2017 CNY (¥) | Jun. 14, 2016 USD ($) | Jun. 14, 2016 CNY (¥)
Bank Acceptances BIlls |  |  |  |  |  |  |  |  |  | $ 23,563,822 |  | $ 28,911,556 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral Amount |  |  |  |  |  |  |  |  |  | 51,378,557 |  | 57,521,579 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unutilized committed banking facilities |  |  |  |  |  |  |  |  |  | 19,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Expense, Debt |  |  |  |  |  |  |  |  |  | 381,275 | $ 530,456 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tianjin BAK New Energy Research Institute Co., Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party description | Each of Mr. Dawei Li and Mr. Yunfei Li (the Company's CEO) entered into an agreement with CBAK Power and Tianjin New Energy whereby Tianjin New Energy assigned its rights to loans to CBAK Power of approximately $3.5 million (RMB23,980,950) and $1.7million (RMB11,647,890) (collectively $5.2 million, the "Debts I") to Mr. Dawei Li and Mr. Yunfei Li, respectively. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tianjin BAK New Energy Research Institute Co., Ltd [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party description |  |  |  |  | Each of Mr. Jun Lang, Ms. Jing Shi and Asia EVK Energy Auto Limited ("Asia EVK") entered into an agreement with CBAK Power and Tianjin New Energy whereby Tianjin New Energy assigned its rights to loans to CBAK Power of approximately $0.3 million (RMB2,225,082), $0.1 million (RMB 912,204) and $5.3million (RMB35,406,036) (collectively $5.7 million, the "Debts II") to Mr. Jun Lang, Ms. Jing Shi and Asia EVK, respectively. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Jilin Province Trust Co. Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party description |  |  |  |  |  | In January 2019, the Company obtained one-year term facilities from Jilin Province Trust Co. Ltd. with a maximum amount of RMB40.0 million (approximately $6.0 million), which was secured by land use rights and buildings of Eodos Liga Energy Co., Ltd. Under the facilities, the Company borrowed RMB16.4 million ($2.4 million), RMB15.4 million ($2.3 million), RMB6.6 million ($1.0 million) and RMB1.2 million ($0.2 million) on February 1, 2019, February 22, 2019, March 8, 2019 and March 21, 2019 respectively, bearing annual interest from 11.3% to 11.6%. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bills receivable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral Amount |  |  |  |  |  |  |  |  |  | 229,017 |  | 6,353,342 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party description | The Company entered into a cancellation agreement (note 1) with Mr. Dawei Li and Mr. Yunfei Li (the creditors). Pursuant to the terms of the cancellation agreement, Mr. Dawei Li and Mr. Yunfei Li agreed to cancel the First Debt in exchange for 3,431,373 and 1,666,667 shares of common stock of the Company, respectively, at an exchange price of $1.02 per share. Upon receipt of the shares, the creditors will release the Company from any claims, demands and other obligations relating to the First Debt. The cancellation agreement contains customary representations and warranties of the creditors. The creditors do not have registration rights with respect to the shares. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation Agreement [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party description |  |  |  |  | The Company entered into a cancellation agreement (note 1) with Mr. Jun Lang, Ms. Jing Shi and Asia EVK (the creditors). Pursuant to the terms of the cancellation agreement, the creditors agreed to cancel the Second Debt in exchange for 300,534, 123,208 and 4,782,163 shares of common stock of the Company, respectively, at an exchange price of $1.1 per share. Upon receipt of the shares, the creditors will release the Company from any claims, demands and other obligations relating to the Second Debt. The cancellation agreement contains customary representations and warranties of the creditors. The creditors do not have registration rights with respect to the shares. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank of Dandong [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 19,400,000 |
Long-term Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 18,900,000 |
Line of Credit Facility, Interest Rate at Period End |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.20% | 7.20%
Bank Acceptances BIlls |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 700,000 |  |  |  |  |  |  |  |  |  |  |  | $ 500,000 |
Bank of Dandong [Member] | RMB [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Acceptances BIlls | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Bank of Dandong [Member] | RMB [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 130,000,000
Long-term Line of Credit | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 126,800,000
Line of Credit Facility, Interest Rate at Period End |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.20% | 7.20%
Bank Acceptances BIlls | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 3,200,000
Bank of Dalian [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Acceptances BIlls |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,800,000 |  |  |
Bank of Dalian [Member] | RMB [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Acceptances BIlls | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 40,000,000 |  |
Debt instrument discount rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |
China Everbright Bank Dalian Branch [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,900,000 |  | $ 14,900,000 |  | $ 14,900,000 |  |  |  |  |  |  |
Long-term Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,900,000 |  |  |  |  |  |  |  |  |  |  |
Bank Acceptances BIlls |  |  |  |  |  |  |  |  |  |  |  | 4,200,000 |  |  |  |  |  |  |  | $ 4,300,000 |  | $ 14,300,000 |  |  |  |  |  |  |
Pledged deposits |  |  |  |  |  |  | $ 7,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Lines of Credit |  | $ 120,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings From Company |  |  |  |  |  |  | $ 14,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument discount rate |  |  |  |  |  |  | 4.00% |  |  |  |  |  |  | 4.00% |  |  |  | 4.00% | 4.00% |  |  |  |  |  |  |  |  |  |
Loans, description |  |  |  | The Company obtained banking facilities from China Everbright Bank Dalian Branch with a maximum amount of RMB200 million (approximately $29.8 million) with the term from June 12, 2018 to June 10, 2021, bearing interest at 130% of benchmark rate of the People's Bank of China ("PBOC") for three-year long-term loans, at current rate 6.175% per annum. The loans are repayable in six installments of RMB0.8 million ($0.12 million) on December 10, 2018, RMB24.0 million ($3.58 million) on June 10, 2019, RMB0.8 million ($0.12 million) on December 10, 2019, RMB74.7 million ($11.13 million) on June 10, 2020, RMB0.8 million ($0.12 million) on December 10, 2020 and RMB66.3 million ($9.88 million) on June 10, 2021. The Company repaid the bank loan of RMB0.8 million ($0.12 million) on December 10, 2018. Under the facilities, the Company borrowed RMB167.0 million (approximately $24.9 million) as of December 31, 2018. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
China Everbright Bank Dalian Branch [Member] | CBAK Power [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
China Everbright Bank Dalian Branch [Member] | CBAK Power [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
China Everbright Bank Dalian Branch [Member] | RMB [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 60,000,000 |  | ¥ 100,000,000 |  | ¥ 100,000,000 |  |  |  |  |  |
Bank Acceptances BIlls | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 28,800,000 |  | ¥ 96,100,000 |  |  |  |  |  |
Pledged deposits | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Lines of Credit | ¥ |  |  | ¥ 800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings From Company | ¥ |  |  |  |  |  |  |  | ¥ 100,000,000 | ¥ 158,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
China Everbright Bank Dalian Branch [Member] | RMB [Member] | CBAK Power [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
China Merchants Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14,900,000 |  |  |  |  |
Bank Acceptances BIlls |  |  |  |  |  |  |  |  |  |  |  | 3,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unutilized committed banking facilities |  |  |  |  |  |  |  |  |  | $ 19,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
China Merchants Bank [Member] | RMB [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 100,000,000 |  |  |  |
Bank Acceptances BIlls | ¥ |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 21,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Industrial Bank Co., Ltd. Dalian Branch [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Acceptances BIlls |  |  |  |  |  |  |  |  |  |  |  | 2,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Industrial Bank Co., Ltd. Dalian Branch [Member] | Bills receivable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral Amount |  |  |  |  |  |  |  |  |  |  |  | $ 2,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Industrial Bank Co., Ltd. Dalian Branch [Member] | RMB [Member] | Bills receivable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral Amount | ¥ |  |  |  |  |  |  |  |  |  |  |  |  | 14,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Industrial Bank Co., Ltd. Dalian Branch [Member] | RMB [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Acceptances BIlls | ¥ |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 15,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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