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Finance Costs, Net | 12 Months Ended
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Sep. 30, 2012
Finance Costs, Net [Text Block] |
19 | Finance Costs, net
| Details of finance costs are summarized as follows:
|  |  | 2011 |  |  | 2012 |
| Total interest cost incurred | $ | 10,294,111 |  | $ | 12,855,149 |
| Less: Interest capitalized |  | (368,227 | ) |  | (1,767,649 | )
| Interest income |  | (663,632 | ) |  | (91,950 | )
| Bank charges |  | 430,935 |  |  | 361,670 |
| Exchange loss/(gain) |  | 1,135,796 |  |  | (91,230 | )
|  | $ | 10,828,983 |  | $ | 11,265,990 |

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- Definition Finance Costs, Net [Text Block] + References No definition available. + Details
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Namespace Prefix: | cbak_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration