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Prepayments and Other Receivables (Tables) | 12 Months Ended
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Sep. 30, 2013
SCHEDULE OF PREPAYMENTS AND OTHER RECEIVABLES [Table Text Block] |
|  | Note |  |  | 2012 |  |  | 2013 |
| Prepayments for raw materials and others |  |  | $ | 4,458,058 |  | $ | 3,466,177 |
| Staff advances |  |  |  | 1,014,814 |  |  | 701,923 |
| Prepaid operating expenses |  |  |  | 1,176,592 |  |  | 292,049 |
| Advances to unrelated third parties | (a) |  |  | - |  |  | 1,169,798 |
| Advance to a related party | (b) |  |  | - |  |  | 885,052 |
| Consideration receivable (Note 8(b)) |  |  |  | - |  |  | 6,483,507 |
| Net assets of BAK Canada held by trustee | (c) |  |  | - |  |  | 1,043,833 |
| Value added tax recoverable |  |  |  | 5,698,687 |  |  | 4,295,390 |
| Others |  |  |  | 1,099,867 |  |  | 1,409,029 |
|  |  |  |  | 13,448,018 |  |  | 19,746,758 |
| Less: Allowance for doubtful accounts |  |  |  | (1,305,329 | ) |  | (1,980,914 | )
|  |  |  | $ | 12,142,689 |  | $ | 17,765,844 |
SCHEDULE OF ANALYSIS OF ALLOWANCE FOR DOUBTUFL ACCOUNTS FOR OTHER RECEIVABLES [Table Text Block] |
|  |  | 2012 |  |  | 2013 |
| Balance at beginning of year | $ | 694,587 |  | $ | 1,305,329 |
| Provision for the year |  | 594,956 |  |  | 1,100,035 |
| Recovery for the year |  | - |  |  | (466,617 | )
| Foreign exchange adjustment |  | 15,786 |  |  | 42,167 |
| Balance at end of year | $ | 1,305,329 |  | $ | 1,980,914 |

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- Definition SCHEDULE OF ANALYSIS OF ALLOWANCE FOR DOUBTUFL ACCOUNTS FOR OTHER RECEIVABLES + References No definition available. + Details
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Namespace Prefix: | cbak_
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Balance Type: | na
Period Type: | duration

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- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
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