Consolidated Statements of Operations and Comprehensive Loss (USD $)	12 Months Ended
Sep. 30, 2014	Sep. 30, 2013
Net revenues	$ 123,014,080us-gaap_SalesRevenueNet	$ 185,552,560us-gaap_SalesRevenueNet
Cost of revenues	(113,454,395)us-gaap_CostOfRevenue	(202,159,615)us-gaap_CostOfRevenue
Gross (loss) profit	9,559,685us-gaap_GrossProfit	(16,607,055)us-gaap_GrossProfit
Operating expenses:
Research and development expenses	(3,981,163)us-gaap_ResearchAndDevelopmentExpense	(5,367,962)us-gaap_ResearchAndDevelopmentExpense
Sales and marketing expenses	(4,504,410)us-gaap_SellingAndMarketingExpense	(7,645,217)us-gaap_SellingAndMarketingExpense
General and administrative expenses	(12,357,721)us-gaap_GeneralAndAdministrativeExpense	(17,490,537)us-gaap_GeneralAndAdministrativeExpense
Recovery of doubtful accounts	639,390	8,958,428
Impairment charge on property, plant and equipment	0	(62,527,213)
Total operating expenses	(20,203,904)us-gaap_OperatingExpenses	(84,072,501)us-gaap_OperatingExpenses
Operating loss	(10,644,219)us-gaap_OperatingIncomeLoss	(100,679,556)us-gaap_OperatingIncomeLoss
Finance costs, net	(16,800,404)us-gaap_FinancingInterestExpense	(11,522,580)us-gaap_FinancingInterestExpense
Government grant income	74,532us-gaap_RevenueFromGrants	131,515us-gaap_RevenueFromGrants
Other income (expense), net	665,053us-gaap_OtherNonoperatingIncomeExpense	1,763,990us-gaap_OtherNonoperatingIncomeExpense
Loss before income tax and discontinued operations	(26,705,038)	(110,306,631)
Income tax expenses	(16,475)us-gaap_IncomeTaxExpenseBenefit	(6,119,964)us-gaap_IncomeTaxExpenseBenefit
Net loss from continuing operations, net of tax	(26,721,513)	(116,426,595)
Income from discontinued operations, net of tax	64,497,429	397,516
Net (loss) profit	37,775,916us-gaap_NetIncomeLoss	(116,029,079)us-gaap_NetIncomeLoss
Other comprehensive income
Release of foreign currency translation adjustment upon disposal of subsidiaries	(39,008,449)us-gaap_GainLossOnSaleOfBusiness	(20,850)us-gaap_GainLossOnSaleOfBusiness
Foreign currency translation adjustment	1,071,881	602,337
Total Other comprehensive income	(37,936,568)cbak_TotalOtherComprehensiveIncome	581,487cbak_TotalOtherComprehensiveIncome
Comprehensive loss	$ (160,652)us-gaap_ComprehensiveIncomeNetOfTax	$ (115,447,592)us-gaap_ComprehensiveIncomeNetOfTax
(Loss) earnings per share - Basic and diluted
- From continuing operations	$ (2.12)	$ (9.22)
- From discontinued operations	$ 5.11	$ 0.03
(Loss) earnings per share - Basic and diluted	$ 2.99us-gaap_EarningsPerShareBasicAndDiluted	$ (9.19)us-gaap_EarningsPerShareBasicAndDiluted
Weighted average number of shares of common stock:
- Basic	12,619,597	12,619,597
- Diluted	12,619,597	12,619,597

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