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Construction in Progress (Narrative) (Details) (USD $) | 3 Months Ended
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Dec. 31, 2014
Construction In Progress 1 | $ 233,080 cbak_ConstructionInProgressZeroTwoSixEightNineThreeOneSevenNinelThreebzbNGZerofSevenlD
Construction In Progress 2 | $ 97,261 cbak_ConstructionInProgressZeroTwoSixEightNineThreeOneSevenNinerPcZMMyEightCKrSeven

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- Definition Construction In Progress 1 + References No definition available. + Details
Name: | cbak_ConstructionInProgressZeroTwoSixEightNineThreeOneSevenNinelThreebzbNGZerofSevenlD
Namespace Prefix: | cbak_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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- Definition Construction In Progress 2 + References No definition available. + Details
Name: | cbak_ConstructionInProgressZeroTwoSixEightNineThreeOneSevenNinerPcZMMyEightCKrSeven
Namespace Prefix: | cbak_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration