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Intangible Assets, net (Narrative) (Details) (USD $)	12 Months Ended
	Sep. 30, 2013
Intangible Assets, Net 1	$ 149,000
Intangible Assets, Net 2	$ 285,000

X

- Definition

Intangible Assets, Net 1

+ References

No definition available.

+ Details

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Namespace Prefix:	cbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Intangible Assets, Net 2

+ References

No definition available.

+ Details

Name:	cbak_IntangibleAssetsNetZeroOneNineFiveNineZerocPTcCNineTwollXXZero
Namespace Prefix:	cbak_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration