[FORM 10 - Q (Mark One) [X ] For the quarterly period ended: June 30, 2011 [ ] For the transition period from ______________to _________________ CHINA BAK BATTERY, INC. Nevada 88-0442833 (State or other jurisdiction of incorporation (I.R.S. Employer Identification No.) or organization) BAK Industrial Park No. 1 BAK Street Kuichong Town, Longgang District Shenzhen 518119 People’s Republic of China] [CERTIFICATIONS I, Xiangqian Li, certify that: 1. I have reviewed this quarterly report on Form 10-Q of China BAK Battery, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements] [CERTIFICATIONS I, Ke Marcus Cui, certify that: 1. I have reviewed this quarterly report on Form 10-Q of China BAK Battery, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such] [2. Information contained in the Report fairly presents, in all material respects, the financial condition and results of operation of the Company.] [2. Information contained in the Report fairly presents, in all material respects, the financial condition and results of operation of the Company. (Principal Financial and Accounting Officer)] [Comprehensive Credit Facility Agreement of Maximum Amount (“Credit Facility Agreement”) Entered into by and between Shenzhen BAK Battery Co., Ltd (“the Company”) and Shenzhen Longgang Branch, Bank of China (the “Creditor”) Dated May 3, 2011 Main articles: Contract number: 2011 Zhenzhongyin Gang Exiezi 000212; Maximum amount of credit facilities to be provided: RMB 450 million; Term: from May 3, 2011] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by and between BAK International Limited and Shenzhen Longgang Branch, Bank of China (the “Creditor”) on May 3, 2011 Main contents: Guaranty Contract number: 2011 Zhenzhongyin Gang Baoxiezi 000212-2; Bak International Limited undertakes to assume joint and several liabilities for Shenzhen BAK Battery Co., Ltd (the “Obligor”)’s indebtedness] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by and between Xiangqian Li and Shenzhen Longgang Branch, Bank of China (the “Creditor”) Dated May 3, 2011 Main contents: Guaranty Contract number: 2011 Zhenzhongyin Gang Baoxiezi 000212-1; Xiangqian Li undertakes to assume joint and several liabilities for Shenzhen BAK Battery Co., Ltd (the “Obligor”)’s indebtedness towards Bank] [Comprehensive Credit Facility Agreement of Maximum Amount (“Credit Facility Agreement”) Entered into by and between Shenzhen BAK Battery Co., Ltd (“the Debtor”) and Shenzhen Branch, China Citic Bank (the “Creditor”) Dated May 6 th , 2011 Main articles: Contract number: (2011) Shenyinsun Zongzi 003; Maximum amount of credit facilities to be provided: RMB 105 million; th th Term: from May] [Summary of Loan Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. (“the Company”) and Shenzhen Branch, China CITIC Bank Co., Ltd (“the Creditor”) Dated June 3, 2011 Main contents Contract number: (2011) Shenyinsun daizi 011; Loan principal: RMB 40 million; Loan term: from June 3, 2011 to June 3, 2012; Floating interest rate: Interest rate of loan] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by and between Xiangqian Li and Shenzhen Branch, China Citic Bank (the “Creditor”) Dated May 6, 2011 Main contents: Guaranty Contract number: (2011) Shenyinsun Ebaozi 001; Main Contract number: (2011) Shenyinsun Zongzi 003 Xiangqian Li undertakes to assume joint and several liabilities for Shenzhen BAK Battery Co., Ltd] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by and between BAK International Limited and Shenzhen Branch, China Citic Bank (the “Creditor”) Dated May 6, 2011 Main contents: Guaranty Contract number: (2011) Shenyinsun Zuibaozi 004; BAK International Limited undertakes to assume joint and several liabilities for Shenzhen BAK Battery Co., Ltd (the “Obligor”)’s indebtedness towards China] [Summary of Loan Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. (“the Company”) and Shenzhen Eastern Branch, Agricultural Bank of China (“the Creditor”) Dated April 13, 2011 Main contents Contract number: 81010120110000280; Loan principal: RMB 60 million; Loan term: from April 13, 2011 to April 13, 2012; Floating interest rate: Interest rate of loan shall be equal] [Summary of Loan Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. (“the Company”) and Shenzhen Eastern Branch, Agricultural Bank of China (“the Creditor”) Dated April 14, 2011 Main contents Contract number: 81010120110000287; Loan principal: RMB 75 million; Loan term: from April 14, 2011 to April 14, 2012; Floating interest rate: Interest rate of loan shall be equal] [Summary of Loan Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. (“the Company”) and Shenzhen Eastern Branch, Agricultural Bank of China (“the Creditor”) Dated April 18, 2011 Main contents Contract number: 81010120110000295; Loan principal: RMB 90 million; Loan term: from April 18, 2011 to April 18, 2012; Floating interest rate: Interest rate of loan shall be equal] [Summary of Loan Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. (“the Company”) and Longgang Branch, Shenzhen Development Bank Co., Ltd (the “Creditor”) Dated June 13, 2011 Main contents: Contract number: Shenfa Longgang Daizi 20110607001; Main Contract: Comprehensive Credit Facility Agreement; Main Contract number: Shenfa Longgang Zongzi 20110120001; Loan principal: RMB 20 million; Loan term: from June] [Summary of Mortgage Contract of Maximum Amount ( the “Contract”) Entered into by and between Shenzhen BAK Battery, Co., Ltd (the “Mortgager”) and Longgang Branch, Shenzhen Development Bank Co., Ltd (the “Creditor”) Dated June 13, 2011 Main contents: Contract number In order to guarantee the indebtedness of Shenzhen BAK Battery Co., Ltd. (the “Obligor”) towards the Creditor under the Comprehensive] [China Development Bank Loan Certificate Contract No.:4403236012009020660 Applicant Shenzhen BAK Battery Co., Ltd Currency RMB Amount 45,605,800.60 Loan Term From June 13, 2011 to February 9, 2016 Usage Constructing BAK Battery R&D Centre Annual rate 7.14% Loan Account of China Development Bank 1044300028 Deposit Account of Applicant in China Development Bank 44301560040217970000 Stamp of Applicant Stamp of China Development Bank] [Supplemental Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. (“the Borrower”) and Shenzhen Branch, China Development Bank Co., Ltd (“the Lender”) dated June 13, 2011 Whereas, the Borrower and the Lender have entered into a loan agreement (contract number: 4403236012009020660) (hereinafter called “Prime Loan Agreement”). Hereby, the parties agree to enter into the following Supplemental Agreements (contract]

[FORM 10−Q (Mark One) March 31, 2011 For the quarterly period ended: For the transition period from _____________ to _____________ 001-32898 CHINA BAK BATTERY, INC. Nevada 88-0442833 (State or other jurisdiction of (I.R.S. Employer Identification No.) incorporation or organization) BAK Industrial Park No. 1 BAK Street Kuichong Town, Longgang District Shenzhen 518119 People’s Republic of China (86-755) 8977-0093 ____________________________________________________________________________ (Former] [CERTIFICATIONS I, Xiangqian Li, certify that: 1. I have reviewed this quarterly report on Form 10-Q of China BAK Battery, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements] [CERTIFICATIONS I, Ke Marcus Cui, certify that: 1. I have reviewed this quarterly report on Form 10-Q of China BAK Battery, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such] [OF THE SARBANES-OXLEY ACT OF 2002 2. Information contained in the Report fairly presents, in all material respects, the financial condition and results of operation of the Company. Xiangqian Li Chief Executive Officer] [OF THE SARBANES-OXLEY ACT OF 2002 2. Information contained in the Report fairly presents, in all material respects, the financial condition and results of operation of the Company. Ke Marcus Cui Interim Chief Financial Officer (Principal Financial and Accounting Officer)] [Comprehensive Credit Facility Agreement of Maximum Amount (“Credit Facility Agreement”) Entered into by and between Shenzhen BAK Battery Co., Ltd (the “Company”) and Shenzhen Hi-Tech District Branch, Industrial Bank CO. Ltd (the “Creditor”) Dated December 26, 2010 Main articles: Contract number: Xingyinshen Gaoxinqu Shouxinzi(2010)013; Maximum amount of credit facilities to be provided: RMB 62.5 million; Term: from December 26, 2010] [Summary of Loan Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. Main contents Contract number: Xingyinshen Gaoxinqu Shouxinduanjiezi(2010)021; Loan principal: RMB 50 million; Loan term: from January 19, 2011 to December 10, 2011; Fixed interest rate: annually 6.391%; Interest accrued and settled per month, interest settlement day is the 20th day of each month; Penalty interest rate] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by and between BAK International Limited (the “Guarantor”) and Shenzhen Hi-Tech District Branch, Industrial Bank CO. Ltd (the “Creditor”) on December 26, 2010 Main contents: Guaranty Contract number: Xingyinshen Gaoxinqu Shouxin (baozheng)zi(2010)013; BAK International Limited undertakes to assume joint and several liabilities for Shenzhen BAK Battery Co., Ltd] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by and between BAK International (Tianjin) Ltd. (the “Guarantor”) and Shenzhen Hi-Tech District Branch, Industrial Bank CO. LTD (the “Creditor”) on December 26, 2010 Main contents: Guaranty Contract number: Xingyinshen Gaoxinqu Shouxin (baozheng)zi(2010)014; BAK International (Tianjin) Ltd. undertakes to assume joint and several liabilities for Shenzhen BAK Battery] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by Main contents: Guaranty Contract number: Xingyinshen Gaoxinqu Shouxinge(baozheng)zi(2010)016; Xiangqian Li undertakes to assume joint and several liabilities for Shenzhen BAK Battery Co., Ltd (the “Obligor”)’s indebtedness towards Industrial Bank under the Comprehensive Credit Facility Agreement of Maximum Amount (reference no.: Xingyinshen Gaoxinqu Shouxinzi (2010)013) from December 26,] [Comprehensive Credit Facility Agreement of Maximum Amount (“Credit Facility Agreement”) Entered into by and between BAK International (Tianjin) Limited (“the Company”) and Tianjin Branch, Bank of Dalian (the “Creditor”) Dated October 27, 2010 Main articles: Contract number: DLQ Jin201010270014; Maximum amount of credit facilities to be provided: RMB 80 million; Term: from October 27, 2010 to January 26, 2012; Purpose] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by and between Shenzhen BAK Battery Co., Ltd, Xiangqian Li (the “Guarantor”) and Tianjin Branch, Bank of Dalian (the “Creditor”) on October 27, 2010 Main contents: Guaranty Contract number: DLQ Jin201010270014; Shenzhen BAK Battery Co., Ltd and Xiangqian Li undertake to assume joint and several liabilities for BAK] [Comprehensive Credit Facility Agreement of Maximum Amount (“Credit Facility Agreement”) Entered into by and between Shenzhen BAK Battery Co., Ltd (“the Company”) and Shenzhen Longgang Branch, Shenzhen Development Bank (the “Creditor”) Dated January 20, 2011 Main articles: Contract number: Shenfa Longgang Zongzi 20110120001; Maximum amount of credit facilities to be provided: RMB 200 million; Term: from January 26, 2011 to] [Summary of Loan Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. (“the Company”) and Longgang Branch, Shenzhen Development Bank Co., Ltd (the “Creditor”) on August 4, 2010 Main contents: Contract number: Shenfa Longgang Daizi 20100803001; Main Contract: Comprehensive Credit Facility Agreement; Main Contract number: Shenfa Longgang Zongzi 20091221001; Loan principal: RMB 20 million; Loan term: from August] [Summary of Loan Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. (“the Company”) and Longgang Branch, Shenzhen Development Bank Co., Ltd (the “Creditor”) on January 25, 2011 Main contents: Contract number: Shenfa Longgang Daizi 20110125001; Main Contract: Comprehensive Credit Facility Agreement; Main Contract number: Shenfa Longgang Zongzi 20110120001; Loan principal: RMB 70 million; Loan term: from January] [Summary of Loan Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. (“the Company”) and Longgang Branch, Shenzhen Development Bank Co., Ltd (the “Creditor”) on January 30, 2011 Main contents: Contract number: Shenfa Longgang Daizi 20110130001; Main Contract: Comprehensive Credit Facility Agreement; Main Contract number: Shenfa Longgang Zongzi 20110120001; Loan principal: RMB 60 million; Loan term: from January] [Summary of Mortgage Contract of Maximum Amount ( the “Contract”) Entered into by and between Shenzhen BAK Battery, Co., Ltd (the “Mortgager”) and Longgang Branch, Shenzhen Development Bank Co., Ltd (the “Creditor”) on January 20, 2011 Main contents: Contract number In order to guarantee the indebtedness of Shenzhen BAK Battery Co., Ltd. (the “Obligor”) towards the Creditor under the Comprehensive] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by and between BAK International Limited (the “Guarantor” ) and Longgang Branch, Shenzhen Development Bank (the “Creditor”) on January 21, 2011 Main contents: Guaranty Contract number: Shenfa Longgang Ebaozi 20110120001-1; Bak International Limited undertakes to assume joint and several liabilities for Shenzhen BAK Battery Co., Ltd (the “Obligor”)’s] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by and between BAK International (Tianjin) Limited (the “Guarantor” ) and Longgang Branch, Shenzhen Development Bank (the “Creditor”) on January 21, 2011 Main contents: Guaranty Contract number: Shenfa Longgang Ebaozi 20110120001-3; Bak International (Tianjin) Limited undertakes to assume joint and several liabilities for Shenzhen BAK Battery Co., Ltd] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by and between Mr. Li Xiangqian (the “Guarantor” ) and Longgang Branch, Shenzhen Development Bank (the “Creditor”) on January 21, 2011 Main contents: Guaranty Contract number: Shenfa Longgang Ebaozi 20110120001-2; As guarantor, Mr. Li Xiangqian undertakes to assume joint and several liabilities for Shenzhen BAK Battery Co., Ltd] [Summary of Guaranty Contract of Maximum Amount ( the “Contract”) Entered into by and between Shenzhen BAK Battery Co., Ltd, (the “Guarantor”) and Tianjin Branch Shanghai Pudong Development Bank (the “Creditor”) on November 30, 2010 Main contents: Guaranty Contract number: ZB7703201088020401; Maximum amount of loan to be provided: RMB 30 million; Term: from November 30, 2010 to October 25, 2011;] [Summary of Loan Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. (“the Company”) and Shenzhen Eastern Branch, Agricultural Bank of China (“the Creditor”) dated January 11, 2011 Main contents Contract number: 81010120110000034; Loan principal: RMB 50 million; Loan term: from January 11, 2011 to January 11, 2012; Floating interest rate: Interest rate of loan shall be equal] [Summary of Loan Agreement Entered into by and between Shenzhen BAK Battery Co., Ltd. (“the Company”) and Shenzhen Eastern Branch, Agricultural Bank of China (“the Creditor”) dated January 18, 2011 Main contents Contract number: 81010120110000067; Loan principal: RMB 50 million; Loan term: from January 18, 2011 to January 18, 2012; Floating interest rate: Interest rate of loan shall be equal]