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Loans (Narrative) (Details) ¥ in Thousands |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |  |  |  |  |  |  |
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Jun. 10, 2021 USD ($) | Jun. 10, 2021 CNY (¥) | Dec. 10, 2020 USD ($) | Dec. 10, 2020 CNY (¥) | Jun. 10, 2020 USD ($) | Jun. 10, 2020 CNY (¥) | Dec. 10, 2019 USD ($) | Dec. 10, 2019 CNY (¥) | Jun. 10, 2019 USD ($) | Jun. 10, 2019 CNY (¥) | Dec. 10, 2018 USD ($) | Dec. 10, 2018 CNY (¥) | Jun. 12, 2018 USD ($) | Jun. 12, 2018 CNY (¥) | Nov. 30, 2018 USD ($) | Nov. 30, 2018 CNY (¥) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Nov. 30, 2018 CNY (¥) | Sep. 30, 2018 CNY (¥) | Aug. 31, 2018 USD ($) | Aug. 31, 2018 CNY (¥) | Aug. 22, 2018 USD ($) | Aug. 22, 2018 CNY (¥) | Jun. 04, 2018 USD ($) | Jun. 04, 2018 CNY (¥) | Dec. 31, 2017 USD ($) | Nov. 09, 2017 USD ($) | Nov. 09, 2017 CNY (¥) | Aug. 02, 2017 USD ($) | Aug. 02, 2017 CNY (¥) | Jul. 06, 2016 USD ($) | Jul. 06, 2016 CNY (¥) | Jun. 14, 2016 USD ($) | Jun. 14, 2016 CNY (¥)
Bank Acceptances Executed and Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 33,427,220 |  | $ 33,427,220 |  |  |  |  |  |  |  |  |  | $ 34,025,080 |  |  |  |  |  |  |  |
Pledged deposits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,668,797 |  | 17,668,797 |  |  |  |  |  |  |  |  |  | 7,808,329 |  |  |  |  |  |  |  |
Collateral Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 57,863,871 |  | 57,863,871 |  |  |  |  |  |  |  |  |  | 55,667,476 |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,800,000 |  | 16,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Expense, Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 537,033 | $ 346,962 | 1,633,731 | $ 1,050,474 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bills receivable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,427,448 |  | 9,427,448 |  |  |  |  |  |  |  |  |  | $ 19,047,471 |  |  |  |  |  |  |  |
Bank of Dandong [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 18,900,000 | ¥ 130,000
Long-term Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 18,500,000 | ¥ 126,800
Line of Credit Facility, Interest Rate at Period End |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.20% | 7.20%
Bank Acceptances Executed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 700,000 |  | 700,000 |  |  | ¥ 5,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000 | ¥ 3,200
Bank Acceptances Executed and Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 700,000 |  | 700,000 |  |  | 5,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pledged deposits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 700,000 |  | 700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank of Dalian [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000 | ¥ 10,000 |  |
Long-term Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000 | ¥ 10,000 |  |
Line of Credit Facility, Interest Rate at Period End |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.525% | 6.525% |  |
Bank Acceptances Executed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,800,000 | ¥ 40,000 |  |
China Everbright Bank Dalian Branch [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,800,000 | ¥ 60,000 |  |  | $ 29,100,000 | ¥ 200,000 |  | $ 14,600,000 | ¥ 100,000 |  |  |  |  |  |
Long-term Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,500,000 |  | 14,500,000 |  |  | 99,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate at Period End |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.175% | 6.175% |  | 4.505% | 4.505% |  |  |  |  |  |
Bank Acceptances Executed and Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,800,000 | ¥ 26,300 |  |  |  |  |  |  |  |  |  |  |
Pledged deposits |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,300,000 |  | 7,300,000 |  | 7,300,000 |  | ¥ 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,400,000 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Lines of Credit |  |  |  |  |  |  |  |  |  |  |  |  | $ 23,100,000 | ¥ 158,300 | $ 14,600,000 | ¥ 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Lines of Credit | $ 5,430,000 | ¥ 37,300 | $ 150,000 | ¥ 1,000 | $ 12,960,000 | ¥ 89,000 | $ 150,000 | ¥ 1,000 | $ 4,220,000 | ¥ 29,000 | $ 150,000 | ¥ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument discount rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.00% |  |  |  |  |  | 4.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
China Everbright Bank Dalian Branch [Member] | CBAK Power [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  | 100.00% | 100.00% |  |  |  |  |  |
China Merchants Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14,600,000 | ¥ 100,000 |  |  |  |  |  | $ 14,600,000 | ¥ 100,000 |  |  |  |
Bank Acceptances Executed and Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,100,000 |  | 3,100,000 |  |  | ¥ 21,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pledged deposits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 300,000 |  | $ 300,000 |  |  |  | $ 8,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument discount rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.00% |  | 4.00% |  |  | 4.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
China Merchants Bank [Member] | Bills receivable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,070,000 |  | $ 3,070,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Industrial Bank Co., Ltd. Dalian Branch [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Acceptances Executed and Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,800,000 |  | 2,800,000 |  |  | ¥ 19,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pledged deposits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 900,000 |  | 900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Industrial Bank Co., Ltd. Dalian Branch [Member] | Bills receivable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,900,000 |  | $ 1,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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