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Intangible Assets, net (Narrative) (Details) (USD $) | 12 Months Ended
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Sep. 30, 2014
Intangible Assets, Net 1 | $ 285,044 cbak_IntangibleAssetsNetZeroTwoSixFiveZeroThreeOneThreeFiverQSqwNFiveCOneTwoFourV
Intangible Assets, Net 2 | $ 154,662 cbak_IntangibleAssetsNetZeroTwoSixFiveZeroThreeOneThreeFivecFourpSSxXFiveKfmr

X
- Definition Intangible Assets, Net 2 + References No definition available. + Details
Name: | cbak_IntangibleAssetsNetZeroTwoSixFiveZeroThreeOneThreeFivecFourpSSxXFiveKfmr
Namespace Prefix: | cbak_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Intangible Assets, Net 1 + References No definition available. + Details
Name: | cbak_IntangibleAssetsNetZeroTwoSixFiveZeroThreeOneThreeFiverQSqwNFiveCOneTwoFourV
Namespace Prefix: | cbak_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration