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Other Short-term Loans (Tables) | 9 Months Ended
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Jun. 30, 2016
Schedule of Other Short-term Loan [Table Text Block] |
|  |  |  |  |  | September 30, |  |  | June 30, |
|  |  | Note |  |  | 2015 |  |  | 2016 |
| Advance from related parties |  |  |  |  |  |  |  |  |
| – Tianjin BAK New Energy Research Institute Co., Ltd (“Tianjin New Energy”) |  | (a) |  | $ | 6,094 |  | $ | 1,067,688 |
| – Mr. Xiangqian Li, the Company’s Former CEO |  | (b) |  |  | 100,000 |  |  | 100,000 |
|  |  |  |  |  | 106,094 |  |  | 1,167,688 |
| Advances from unrelated third party |  | (c) |  |  |  |  |  |  |
| – Mr. Mingzhe Li |  |  |  |  | - |  |  | 782,108 |
| – Mr. Wenwu Yu |  |  |  |  | - |  |  | 2,683,231 |
| – Mr. Yunfei Li (CEO of the Company since March 1, 2016) |  |  |  |  | 78,661 |  |  | - |
|  |  |  |  |  | 78,661 |  |  | 3,465,339 |
| Advances from equity investors |  | (d) |  |  |  |  |  |  |
| – Mr. Jiping Zhou (Note 1) |  |  |  |  | - |  |  | 829,967 |
| – Mr. Dawei Li (Note 1) |  |  |  |  | - |  |  | 2,029,934 |
|  |  |  |  |  | - |  |  | 2,859,901 |
|  |  |  |  | $ | 184,755 |  | $ | 7,492,928 |

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- Definition Schedule of Other Liabilities + References No definition available. + Details
Name: | cbak_ScheduleOfOtherLiabilitiesTableTextBlock
Namespace Prefix: | cbak_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration