Exhibit 10.9
                                                                     Translation


 Related Transaction Agreement by and between Shenzen BAK Battery Co., Ltd. and
               Jilin Provincial Huaruan Technology Company Limited

                           Patent Assignment Agreement
Name of the patent:

1.   Manufacture   method  for  gel   electrolyte   membranous   stacked  Li-ion
     battery:
     Application number: 01108824.9             Date: 29 March 2002
2.   Li-ion polymer battery spraying material and production method.
     Application number: 02109176.5             Date: 7 February 2002
3.   A type of lithium battery cell cover with explosion-proof  membrane and its
     manufacturing method.
     Application number: 01123958.1             Date: 8 August 2001
4.   Lithium battery cell rectangular shell and its manufacturing method
     Application number: 01109135.5             Date: 9 March 2001
5.   A type of lithium  battery cell cover plate with  explosion-proof  membrane
     and its manufacturing method.
     Application number: 01109136.3             Date: 9 March 2001
6.   A type of lithium  battery  rectangular  Aluminum Cover of  explosion-proof
     structure.
     Application number: 01270095.9             Date: 2 November 2001
7.   Patent  certificate  received for a type of lithium battery  aluminum cover
     with explosion-proof membrane.
     Patent number: ZL01274686.x                Date: 27 December 2001
8.   A type of Li-ion battery steel cover with explosion-proof membrane.
     Application number: 01277643.2             Date: 31 December 2001

Assignor: Jilin Huaruan Technology Company Limited by Shares

Assignee: Shenzhen BAK Battery Co., Ltd.

Venue: Changchun

Date: 18 October 2003


<PAGE>

Whereas:
-  The  Assignee  has  understood  the  above-listed  patent  right  and  patent
application  rights and intends to obtain the  above-listed  8 patent  right and
patent application rights.
- The  Assignor  agrees to  assign  the  above-listed  patent  right and  patent
application rights to the Assignee.
- Both Parties have reached the following agreements.

Article 1. Documents to be provided by the Assignor to the Assignee
Those include all patent application  documents submitted by the Assignor to the
PRC  Patent  Bureau,  all  documents  issued  by the PRC  Patent  Bureau  to the
Assignor,  documents  issued by the PRC Patent  Bureau to verify the validity of
the patent right (refers to the latest payment certificate of annual fee for the
patent right) etc.

Article 2. Time, place and method of delivery of the documents
After this  Agreement  becomes  effective,  the Assignor  shall  deliver all the
documents  stated in Article 1 to the Assignee  within 7 days after the Assignor
has received the assignment fee from the Assignee.

Article 3 Assignment fee and payment method
In  accordance  with the  asset  evaluation  conducted  by the  Assignor  of the
above-listed 8 patent right and patent  application  rights,  both Parties agree
that the  assignment  fee shall be RMB 32 million yuan. The Assignee shall remit
the  assignment  fee in full to the bank account of the Assignor  within 30 days
after this Agreement becomes effective.

Article 4. Transitional Period
The Assignee shall make the payment to maintain the validity of the above-listed
patent  right and patent  application  rights  after the  effectiveness  of this
Agreement.

Article 5. Taxation
In  accordance  with  the  relevant  tax law of PRC,  all  tax  involved  in the
assignment under this Agreement shall be born by the Assignor.



<PAGE>

Article 6. Breach of contract and remedy
The  breaching  Party shall pay a  compensation  of RMB 100,000  yuan in case of
breach of contract by either Party.

Article 7. Dispute Settlement
Any dispute  arising from the  performance of this Agreement shall be settled by
Both Parties through friendly consultation.

Article 8. Effectiveness
This  Agreement  shall be binding  upon both  Parties  once it is signed by Both
Parties.  This Agreement shall become legally effective once the Alteration Form
for  Registration  Items  submitted by both Parties have been  registered in and
publicized by the PRC Patent Bureau.


Assignor: Jilin Huaruan Technology Company Limited by Shares

Assignee: Shenzhen BAK Battery Co., Ltd.


<PAGE>
<TABLE>
<CAPTION>

                                Asset Evaluation

--------------------------------------- ------------------------------ ------------------------
         Intangible Assets                Evaluation Price              Assignment Price Agreed
                                         (RMB Ten Thousand)                (RMB Ten Thousand)
--------------------------------------- ------------------------------ ------------------------
<S>                                                    <C>                                 <C>
Li-ion polymer battery technologies                    2479                                2460
--------------------------------------- ------------------------------ ------------------------
Li-ion battery spraying material                      247.9                                 200
and its manufacturing methods

--------------------------------------- ------------------------------ ------------------------
Lithium battery cell cover plate                     109.08                                 100
technologies
--------------------------------------- ------------------------------ ------------------------
Battery steel cover                                  114.03                                 110
--------------------------------------- ------------------------------ ------------------------
Li-ion cell cover                                     99.16                                  90
--------------------------------------- ------------------------------ ------------------------
Battery Aluminum cover with                          123.95                                 100
explosion-proof membrane

--------------------------------------- ------------------------------ ------------------------
Manufacturing method for Lithium                     123.95                                 100
battery rectangular cover of
explosion-proof structure
--------------------------------------- ------------------------------ ------------------------
Manufacturing method for                              49.58                                  40
rectangular shell of lithium battery
cell
--------------------------------------- ------------------------------ ------------------------
         Total                                      3346.65                                3200
--------------------------------------- ------------------------------ ------------------------
</TABLE>