================================================================================

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 4 )*

                           BALLARD POWER SYSTEMS INC.
          -----------------------------------------------------------
                                (Name of Issuer)

                                  Common Shares
          -----------------------------------------------------------
                         (Title of Class of Securities)

                                   05858H 10 4
          -----------------------------------------------------------
                                 (CUSIP Number)

                                 Rainer Beckmann
                                   Daimler AG
                               Mercedesstrasse 137
                                 70327 Stuttgart
                                     Germany
                            Tel: 011-49-711-17-58999

                     (Name, Address and Telephone Number of
                      Person Authorized to Receive Notices
                               and Communications)

                                November 7, 2007
         -------------------------------------------------------------
                     (Date of Event which Requires Filing of
                      this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
[_].

         NOTE: Schedules filed in paper format shall include a signed original
         and five copies of the schedule, including all exhibits. See Rule 13d-7
         for other parties to whom copies are to be sent.

         *The remainder of this cover page shall be filled out for a reporting
         person's initial filing on this form with respect to the subject class
         of securities, and for any subsequent amendment containing information
         which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

================================================================================

                                                              Page 2 of 6 Pages

CUSIP NO.  058584 10 4

--------------------------------------------------------------------------------
1       Name of Reporting Person/I.R.S. Identification No. of above persons
        (entities only)

        Daimler AG
--------------------------------------------------------------------------------
2       Check the Appropriate box if a member of a group                (a) [_]
                                                                        (b) [_]
--------------------------------------------------------------------------------
3       SEC use only

--------------------------------------------------------------------------------
4       Source of funds (See Instructions)

        WC, OO
--------------------------------------------------------------------------------
5       Check box if disclosure of legal proceedings is required pursuant
        to items 2(d) or 2(e)
                                                                            [_]
--------------------------------------------------------------------------------
6       Citizenship or place of organization

        Federal Republic of Germany
--------------------------------------------------------------------------------
                               7    Sole voting power

                                    21,392,598
                            ----------------------------------------------------
                               8    Shared voting power
         NUMBER OF
          SHARES                    0
     BENEFICIALLY OWNED     ---------------------------------------------------
      BY EACH REPORTING        9    Sole dispositive power
          PERSON
           WITH                     21,392,598
                            ---------------------------------------------------
                               10   Shared dispositive power

                                    0
--------------------------------------------------------------------------------
11      Aggregate amount beneficially owned by each reporting person

        21,392,598
--------------------------------------------------------------------------------
12      Check box if the aggregate amount in row (11) excludes certain
        shares (See Instructions)
                                                                            [_]
--------------------------------------------------------------------------------
13      Percent of class represented by amount in row (11)

        18.7%
--------------------------------------------------------------------------------
14      Type of reporting person (See Instructions)

        CO
--------------------------------------------------------------------------------


                                                             Page  3 of 6 Pages


This Amendment No. 4 amends the Statement on Schedule 13D filed on December 10,
2001 ("Schedule 13D") by Daimler AG (formerly known as DaimlerChrysler  AG) and
DaimlerChrysler North America Holding Corporation,  as amended by Amendment No.
1 to the Schedule 13D filed on January 19, 2005 ("Amendment No. 1"),  Amendment
No. 2 to the  Schedule  13D filed on February 3, 2005  ("Amendment  No. 2") and
Amendment No. 3 to the Schedule 13D filed on September 15, 2005 ("Amendment No.
3"), with respect to the Common  Shares (the "Common  Shares") of Ballard Power
Systems Inc., a Canadian corporation ("Ballard").

ITEM 2 - IDENTITY AND BACKGROUND

Item 2 of the Schedule 13D, as amended by Amendment No. 1, Amendment No. 2 and
Amendment No. 3, is hereby amended and restated by deleting it in its entirety
and substituting the following:

"Daimler AG is the ultimate parent company of the Daimler Group. The Daimler
Group designs, manufactures, distributes and sells a wide range of automotive
products, mainly passenger cars, light trucks and commercial vehicles. Daimler
AG also provides financial and other services relating to its automotive
business. Daimler AG's "seat" (essentially the equivalent of principal place of
business under U.S. law) and principal executive offices are located at
Mercedesstrasse 137, 70327 Stuttgart, Germany.

Information concerning the name, business address, principal occupation and
citizenship of each executive officer and director of Daimler AG contained in
the Schedule 13D, as amended by Amendment No. 1, Amendment No. 2 and Amendment
No. 3, is hereby further amended by deleting it in its entirety and substituting
the information set out in Exhibit 1 attached hereto and incorporated herein by
reference.

Neither Daimler AG nor, to the knowledge of Daimler AG, any of its executive
officers or directors have been convicted during the last five years in a
criminal proceeding (excluding traffic violations or similar misdemeanors).
Neither Daimler AG, nor to the knowledge of Daimler AG, any executive officer or
director of Daimler AG, during the last five years, was a party to a civil
proceeding of a judicial or administrative body of competent jurisdiction and as
a result of such proceeding was or is subject to a judgment, decree or final
order enjoining future violations of, or prohibiting or mandating activities
subject to, federal or state securities laws or finding any violations with
respect to such laws."

ITEM 3 - SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

Not applicable. This Amendment No. 4 is filed in connection with the entry by
Daimler AG into the Restructuring Agreement (as defined below), pursuant to
which Daimler AG will sell all of its Common Shares to Ballard upon the closing
of the transactions contemplated therein. See "Item 4 - Purpose of Transaction"
below.

ITEM 4 - PURPOSE OF TRANSACTION

Item 4 of the Schedule 13D, as amended by Amendment No. 1, Amendment No. 2 and
Amendment No. 3, is hereby amended and restated by deleting it in its entirety
and substituting the following:

"Daimler AG initially acquired Common Shares in order to participate in a global
alliance (the "Global Alliance") with Ballard and Ford Motor Company ("Ford")
for the development, marketing and sale of fuel cell engines and related
technology. Additional Common Shares were acquired directly and indirectly by
Daimler AG, as more particularly described under Item 3 of Amendment No. 1.

On November 7, 2007, Daimler AG entered into a Restructuring Agreement (the
"Restructuring Agreement") with Ballard and Ford pursuant to which Ballard has
agreed to transfer to Daimler AG and Ford certain joint intellectual property
rights related to the automotive business and cash. Ballard will incorporate a
new British Columbia corporation to which it will transfer certain assets and
liabilities, as well as personnel related to Ballard's automotive business. This
new company will be owned as to



                                                             Page  4 of 6 Pages


50.1% by Daimler AG, 30.0% by Ford and 19.9% by Ballard. Closing of the
transactions described in the Restructuring Agreement is subject to certain
conditions, including approval by Ballard's shareholders (other than Daimler AG
and Ford) and approval of by the supervisory board of Daimler AG. As part of
this transaction, Daimler AG has agreed sell to Ballard all of its Common Shares
and its Class A Shares of DBF Pref Share Holdings, Inc., a company which holds
the Class A share and Class B share of Ballard. Under the Restructuring
Agreement, Ford has also agreed to sell all of its Common Shares and its Class C
Shares of DBF Pref Share Holdings, Inc. to Ballard. Upon consummation of the
transactions described above, Daimler AG will no longer own any Common Shares.
In addition, because Daimler AG will no longer own any Common Shares upon the
consummation of the transactions described in the Restructuring Agreement,
Daimler AG's rights under the Global Alliance to appoint certain members of the
Board of Directors of Ballard will cease.

FUTURE PLANS

At the present time Daimler AG does not have any additional plans or proposals
that relate to or would result in actions or circumstances enumerated in Item 4
of Schedule 13D."

ITEM 5 - INTEREST IN SECURITIES OF THE ISSUER

Item 5 of the Schedule 13D, as amended by Amendment No. 1, Amendment No. 2 and
Amendment No. 3, is hereby amended and restated by deleting it in its entirety
and substituting the following:

(a) - (b)

Daimler AG is the owner of, and has sole dispositive power with regard to,
21,392,598 Common Shares, which represents approximately 18.7% of the issued and
outstanding Common Shares. To the knowledge of Daimler AG, no executive officer
or director of Daimler AG owns any Common Shares.

(c)

To the best of the knowledge of Daimler AG, none of the persons named in
response to paragraph (a) has effected any transactions in the Common Shares
during the past 60 days.

(d) - (e)

Not applicable

ITEM 6 - CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
TO SECURITIES OF THE ISSUER

Item 6 of the Schedule 13D, as amended by Amendment No. 1, Amendment No. 2 and
Amendment No. 3, is hereby amended and restated by deleting it in its entirety
and substituting the following:

"See Item 4 above with regard to the Restructuring Agreement. A copy the
Restructuring Agreement is attached hereto as Exhibit 2 to this Amendment No. 4
and is incorporated herein by reference."

ITEM 7 - MATERIAL TO BE FILED AS EXHIBITS

The following exhibits are filed in connection with this Amendment No. 4 to the
Schedule 13D:

Exhibit 1.        Members of Supervisory Board and Board of Management of
                  Daimler AG.

Exhibit 2.        Restructuring Agreement.



                                                             Page  5 of 6 Pages


                                    SIGNATURE


After reasonable inquiry and to my best knowledge and belief, I certify that the
information set forth in this statement is true, complete and correct.

Dated as of November 9, 2007.




DAIMLER  AG



By: /s/ Dr. Wolfgang Bauder
    ------------------------------
    Name:  Dr. Wolfgang Bauder
    Title: Senior Counsel



By: /s/ Dr. Peter Herz
    ------------------------------
    Name:  Dr. Peter Herz
    Title: Assistant General Counsel






                                                             Page  6 of 6 Pages


                                INDEX TO EXHIBITS


         Exhibit 1.        Members of Supervisory Board and Board of Management
                           of Daimler AG.

         Exhibit 2.        Restructuring Agreement.