Subsequent Events	9 Months Ended
Jun. 30, 2013
Subsequent Events [Text Block]	22. Subsequent Events Apart from those disclosed elsewhere in these financial statements, subsequent to June 30, 2013 and on July 9, 2013, the Company formed a new subsidiary China BAK Asia Holdings Limited (“China Asia”) in Hong Kong. China Asia is in the process of setting up a new wholly owned subsidiary located in Dalian, Liaoning Province, China, which is intended to be engaged in the production of batteries for the use of new energy electric vehicles especially electric cars. On July 12, 2013, the Company entered into an equity transfer agreement with Tianjin Zhantuo, an unrelated party and the lender of a long term loan to the Company (“BAK Tianjin”) for the disposal of its 100% equity interest in Tianjin Meicai with for cash consideration of $29.3 million (RMB180 million). On July 3, 2013, the Company entered into an agreement with Bank of China (Shenzhen Branch, Kuichong Subbranch), pursuant to the agreement, Bank of China has the right to take over the right of Shenzhen BAK’s accounts receivables to repay its loans and interest once Shenzhen BAK lose the ability to repay them. On July 24, 2013, the Company entered an agreement with Bank of China (Shenzhen Branch, Kuichong Subbranch), pursuant to the agreement, the Company agreed to pledge its Shenzhen industrial campus’s land use right and buildings to Bank of China with the second priority. The above land use right and buildings has been pledged to Agricultural Bank of China with the first priority since fiscal year 2006.

Subsequent Events

9 Months Ended

Jun. 30, 2013

22. Subsequent Events

Apart from those disclosed elsewhere in these financial statements, subsequent to June 30, 2013 and on July 9, 2013, the Company formed a new subsidiary China BAK Asia Holdings Limited (“China Asia”) in Hong Kong. China Asia is in the process of setting up a new wholly owned subsidiary located in Dalian, Liaoning Province, China, which is intended to be engaged in the production of batteries for the use of new energy electric vehicles especially electric cars.

On July 12, 2013, the Company entered into an equity transfer agreement with Tianjin Zhantuo, an unrelated party and the lender of a long term loan to the Company (“BAK Tianjin”) for the disposal of its 100% equity interest in Tianjin Meicai with for cash consideration of $29.3 million (RMB180 million).

On July 3, 2013, the Company entered into an agreement with Bank of China (Shenzhen Branch, Kuichong Subbranch), pursuant to the agreement, Bank of China has the right to take over the right of Shenzhen BAK’s accounts receivables to repay its loans and interest once Shenzhen BAK lose the ability to repay them.

On July 24, 2013, the Company entered an agreement with Bank of China (Shenzhen Branch, Kuichong Subbranch), pursuant to the agreement, the Company agreed to pledge its Shenzhen industrial campus’s land use right and buildings to Bank of China with the second priority. The above land use right and buildings has been pledged to Agricultural Bank of China with the first priority since fiscal year 2006.