[LETTERHEAD OF ANDREWS KURTH LLP]




                                January 12, 2006





Ms. Jennifer Hardy
United States Securities and Exchange Commission
450 Fifth Street NW
Washington, D.C.  20549


RE:      China BAK Battery, Inc., formerly known as Medina Coffee, Inc.
         Pre-effective Amendment 5 to Registration Statement on Farm SB-2
         Filed December 20, 2005
         File No. 333-122209
         Annual Report on Form 10-KSB for the fiscal year ended December 31,
         2004 and Subsequent Exchange Act Reports
         File No. 0-49712

Dear Ms. Hardy:

         On  behalf  of  China  BAK  Battery,   Inc.  (the  "Company")  we  have
electronically  transmitted  herewith  Pre-Effective  Amendment  No.  6  to  the
Registration  Statement on Form SB-2,  which has been marked to indicate changes
effected by the  amendment.  In addition,  we have today  forwarded by overnight
delivery  three marked  copies of Amendment  No. 6 c/o Mr.  Edward Kelly for the
convenience of the Staff.

Principal Stockholders, page 45
- -------------------------------

1.       Identify by footnote or otherwise the natural  person or persons having
         sole or  shared  investment  control  over the  securities  held by The
         Pinnacle Fund,  L.P. Item 403 of Regulation S-K requires  disclosure of
         all beneficial owners, with reference to beneficial  ownership as it is
         defined in Rule 13d-3 under the Exchange Act.  Thus,  you must identify
         all  persons  who,  directly  or  indirectly,  have or share  voting or
         investment control of the securities.

         Response:  We have  modified  the  Disclosure  in  accordance  with the
         Staff's comments.





Ms. Hardy
January 12, 2006
Page 2


Retort of Independent Registered Public Accounting Firm, page F-1
- -----------------------------------------------------------------

2.       The  auditors'  report  included  in your  filing is not signed by your
         auditor. Please obtain from your auditors a signed audit report. Please
         also ensure that an updated consent is filed with your next amendment.

         Response: We have filed an updated, signed auditor's consent.

3.       Your auditors' report references note 7, which discloses the allocation
         of  depreciation  to cost of  goods  sold,  selling,  and  general  and
         administration  expense.   However,  your  auditors'  report  does  not
         reference note 19 c), which  discusses the  restatement.  Please obtain
         from your  auditors  and  include  in your next  amendment  an  updated
         auditors' report,  which references note 19 c) in their report.  Please
         also ensure they dual date their report for this note to the  financial
         statements.

         Response: We have filed an updated, signed auditor's report.

Financial Statements
- --------------------

4.       Please  update your  disclosures  here and  elsewhere  in the filing to
         include  audited  financial  information  for  the  fiscal  year  ended
         September 30, 2005.

         Response:  We have  modified  the  Disclosure  in  accordance  with the
         Staff's comments.

Balance Sheet, page F-2
- -----------------------

5.       We  reviewed  your  response  to our  comment 5 from our  letter  dated
         December 8, 2005 and your revised balance sheet. Although your response
         states that you have  removed  the  $3,327,393,  which is not  labeled,
         below total  current  assets on your balance  sheet as of September 30,
         2004,  this  amount  still  appears on in your most  recent  amendment.
         Please advise and revise accordingly.

         Response:  We have  modified  the  Disclosure  in  accordance  with the
         Staff's comments.

Statements of Operations, page F-3
- ----------------------------------

6.       We read your  response to our comment 6 from our letter dated  December
         8, 2005 and  revised  disclosure.  It  appears  as though  the  amounts
         restated to allocate a portion of your depreciation  expense to cost of
         good sold were  material  to your  gross  profit.  Please  revise  your
         statements of operations to label each column as "restated."

         Response:  We have  modified  the  Disclosure  in  accordance  with the
         Staff's comments.




Ms. Hardy
January 12, 2006
Page 3



Notes to Financial Statements
- -----------------------------

19.      Restatement of Consolidated Financial Statements, page F-30

7.       We read your  response  to our  comments 6 to 8 from our  letter  dated
         December 8, 2005. Your disclosure  included in note 19 to the financial
         statements  includes  information  for  which  you  have  determined  a
         restatement  is  required.  It is not  sufficient  to merely  include a
         disclosure  in your Form SB-2/A.  We refer you to the  instructions  in
         Form 8-K, which states under general  instruction B(1) that a report on
         Form 8-K is required to be filed or famished,  as applicable,  upon the
         occurrence  of any one or more of the events  specified in the items in
         Sections  1-6 and 9 of Form  8-K.  Non-reliance  on  previously  issued
         financial statements is included in Section 4. As previously requested,
         please file an Item 4.02 Form 8-K referencing  each  restatement  item,
         for which you have  concluded a  restatement  is required.  Please also
         file amended Forms 10-QSB for the fiscal  quarters  ended June 30, 2005
         and March 31,  2005 and amend your Form  8-K/A  filed on April 7, 2005,
         which includes the audited  financial  statements for China BAK Battery
         for September 30, 2004 and September 30, 2003.

8.       We again remind you that when you file your restated Forms 10-QSB/A you
         should appropriately address the following:

         o        full compliance with APB 20, paragraphs 36 and 37,

         o        fully update all affected portions of the document, including,
                  MD&A,

         o        updated Item 3 disclosures should include the following:

         a  discussion  of the  restatement  and  the  facts  and  circumstances
         surrounding it,

         how the  restatement  impacted the CEO and CFO's  original  conclusions
         regarding the effectiveness of your disclosure controls and procedures,

         changes to internal controls over financial reporting, and

         anticipated  changes  to  disclosure  controls  and  procedures  and/or
         internal   controls  over   financial   reporting  to  prevent   future
         misstatements of a similar nature.

         Refer to Items 307 and 308(c) of Regulation S-B.

         o        updated certifications,  which should reference Form 10-QSB/A,
                  rather than Form 10-QSB.




Ms. Hardy January 12, 2006
Page 4



         Response: We will file the requested Amendments and Form 8-K.

Exhibit 23.1
- ------------

9.       The consent  obtained  from your  auditors  does not  reference  19 c).
         Please obtain an updated consent from your auditors and include this in
         your next amendment.

         Response:  We have filed an updated, signed auditor's consent.

Other
- -----

10.      We note your response to prior comment 11 and your intent to respond by
         amendments to comments  21-23 in our October 24, 2005 letter.  Allow us
         sufficient time to review the amendments before requesting acceleration
         of the registration statement's effectiveness.

         Response:  Noted.

Thank  you for your  assistance  and  please  feel  free to call if you have any
questions.

                                                              Very truly yours,

                                                              /s/ Robin Bradford

                                                              Robin Bradford