Exhibit 10.2
                                                                         Summary



                                Guaranty Contract

Guaranty  Contract  Entered by and between  Shenzhen Nanshan Branch of Guangdong
Development  Bank ("the  Creditor")  and Shenzhen  BAK Battery Co.,  Ltd. (" the
Guarantor ") dated January 11th, 2006.

Summary of the main articles
>>    Contract number: 10208106002-01
>>    In order to secure the indebtedness of Shenzhen Tongli High-tech Co., Ltd.
      (hereinafter  referred to as Obligor) under the loan agreement  (reference
      no. 10208106002, hereinafter referred to as Master Agreement) entered into
      by Creditor and Obligor,  the Guarantor  agrees to provide guaranty to the
      Creditor as the guarantor of the Obligor.
>>    Secured  items include the loan  principal,  interest,  penalty  interest,
      breach of contract  compensation  and all the  expenses  incurred  for the
      Creditor to realize its right under Loan Agreement;
>>    Guaranty period:
            |X|   Two years from the expiry date that the Obligor should fulfill
                  its obligations in accordance with Loan Agreement;
            |X|   If due to the provisions of relevant PRC law or regulations or
                  any agreement  reached under Loan Agreement,  any loan becomes
                  mature ahead of its term,  guaranty  period shall be two years
                  starting from the advance mature date.

Summary of the articles omitted
>>    Method of Guaranty
>>    Scope of Guaranty
>>    Rights and Obligations of the Creditor
>>    Rights and Obligations of the Guarantor
>>    Liabilities of Breach of Contract
>>    Effectiveness, modification and termination of the Contract
>>    Notarization
>>    Applicable Laws and Dispute settlement
>>    Special Representation of the Guarantor
>>    Notes
>>    Miscellaneous