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Commitments and Contingencies (Narrative) (Details) (USD $) | 3 Months Ended
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Dec. 31, 2014
Commitments And Contingencies 1 | $ 553,774 cbak_CommitmentsAndContingenciesZeroTwoSixEightNineThreeOneSevenNineMgzHknMQfRnR
Commitments And Contingencies 2 | 553,774 cbak_CommitmentsAndContingenciesZeroTwoSixEightNineThreeOneSevenNineXQSNineFourSVqSevenwZeroB
Commitments And Contingencies 3 | $ 7,550 cbak_CommitmentsAndContingenciesZeroTwoSixEightNineThreeOneSevenNinesggSevendVrSevenGMkq

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- Definition Commitments And Contingencies 1 + References No definition available. + Details
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Namespace Prefix: | cbak_
Data Type: | xbrli:monetaryItemType
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- Definition Commitments And Contingencies 3 + References No definition available. + Details
Name: | cbak_CommitmentsAndContingenciesZeroTwoSixEightNineThreeOneSevenNinesggSevendVrSevenGMkq
Namespace Prefix: | cbak_
Data Type: | xbrli:monetaryItemType
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- Definition Commitments And Contingencies 2 + References No definition available. + Details
Name: | cbak_CommitmentsAndContingenciesZeroTwoSixEightNineThreeOneSevenNineXQSNineFourSVqSevenwZeroB
Namespace Prefix: | cbak_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration