Document:

Exhibit 4.12

                               SUBSIDIARY GUARANTY

New York, New York                                                 June 30, 2004

      FOR VALUE RECEIVED, and in consideration of note purchases from, loans
made or to be made or credit otherwise extended or to be extended by Laurus
Master Fund, Ltd. ("Laurus") to or for the account of GreenMan Technologies,
Inc., a Delaware corporation ("Debtor"), from time to time and at any time and
for other good and valuable consideration and to induce Laurus, in its
discretion, to purchase such notes, make such loans or extensions of credit and
to make or grant such renewals, extensions, releases of collateral or
relinquishments of legal rights as Laurus may deem advisable, each of the
undersigned (and each of them if more than one, the liability under this
Guaranty being joint and several) (jointly and severally referred to as
"Guarantors " or "the undersigned") unconditionally guaranties to Laurus, its
successors, endorsees and assigns the prompt payment when due (whether by
acceleration or otherwise) of all present and future obligations and liabilities
of any and all kinds of Debtor to Laurus and of all instruments of any nature
evidencing or relating to any such obligations and liabilities upon which Debtor
or one or more parties and Debtor is or may become liable to Laurus, whether
incurred by Debtor as maker, endorser, drawer, acceptor, guarantors ,
accommodation party or otherwise, and whether due or to become due, secured or
unsecured, absolute or contingent, joint or several, and however or whenever
acquired by Laurus, whether arising under, out of, or in connection with (i)
that certain Securities Purchase Agreement dated as of the date hereof by and
between the Debtor and Laurus (the "Securities Purchase Agreement"), (ii) each
Related Agreement referred to in the Securities Purchase Agreement, (iii) that
certain Security Agreement dated as of the date hereof by and between the
Debtor, certain Subsidiaries of the Debtor and Laurus (the "Security Agreement")
and (iv) each Ancillary Agreement referred to in the Security Agreement (the
Securities Purchase Agreement, each Related Agreement, the Security Agreement
and each Ancillary Agreement, as each may be amended, modified, restated or
supplemented from time to time, are collectively referred to herein as the
"Documents"), or any documents, instruments or agreements relating to or
executed in connection with the Documents or any documents, instruments or
agreements referred to therein or otherwise, or any other indebtedness,
obligations or liabilities of the Debtor to Laurus, whether now existing or
hereafter arising, direct or indirect, liquidated or unliquidated, absolute or
contingent, due or not due and whether under, pursuant to or evidenced by a
note, agreement, guaranty, instrument or otherwise (all of which are herein
collectively referred to as the "Obligations"), and irrespective of the
genuineness, validity, regularity or enforceability of such Obligations, or of
any instrument evidencing any of the Obligations or of any collateral therefor
or of the existence or extent of such collateral, and irrespective of the
allowability, allowance or disallowance of any or all of the Obligations in any
case commenced by or against Debtor under Title 11, United States Code,
including, without limitation, obligations or indebtedness of Debtor for
post-petition interest, fees, costs and charges that would have accrued or been
added to the Obligations but for the commencement of such case. Terms not
otherwise defined herein shall have the meaning assigned such terms in the
Securities Purchase Agreement and the Security Agreement, as applicable. In
furtherance of the foregoing, the undersigned hereby agrees as follows:

      1. No Impairment. Laurus may at any time and from time to time, either
before or after the maturity thereof, without notice to or further consent of
the undersigned, extend the time of payment of, exchange or surrender any
collateral for, renew or extend any of the Obligations or increase or decrease
the interest rate thereon, or any other agreement with Debtor or with any other
party to or person liable on any of the Obligations, or interested therein, for
<PAGE>

the extension, renewal, payment, compromise, discharge or release thereof, in
whole or in part, or for any modification of the terms thereof or of any
agreement between Laurus and Debtor or any such other party or person, or make
any election of rights Laurus may deem desirable under the United States
Bankruptcy Code, as amended, or any other federal or state bankruptcy,
reorganization, moratorium or insolvency law relating to or affecting the
enforcement of creditors' rights generally (any of the foregoing, an "Insolvency
Law") without in any way impairing or affecting this Guaranty. This instrument
shall be effective regardless of the subsequent incorporation, merger or
consolidation of Debtor, or any change in the composition, nature, personnel or
location of Debtor and shall extend to any successor entity to Debtor, including
a debtor in possession or the like under any Insolvency Law.

      2. Guaranty Absolute. Subject to Section 5(c), each of the undersigned
jointly and severally guarantees that the Obligations will be paid strictly in
accordance with the terms of the Documents and/or any other document, instrument
or agreement creating or evidencing the Obligations, regardless of any law,
regulation or order now or hereafter in effect in any jurisdiction affecting any
of such terms or the rights of Debtor with respect thereto. Guarantors hereby
knowingly accept the full range of risk encompassed within a contract of
"continuing guaranty" which risk includes the possibility that Debtor will
contract additional indebtedness for which Guarantors may be liable hereunder
after Debtor's financial condition or ability to pay its lawful debts when they
fall due has deteriorated, whether or not Debtor has properly authorized
incurring such additional indebtedness. The undersigned acknowledge that (i) no
oral representations, including any representations to extend credit or provide
other financial accommodations to Debtor, have been made by Laurus to induce the
undersigned to enter into this Guaranty and (ii) any extension of credit to the
Debtor shall be governed solely by the provisions of the Documents. The
liability of each of the undersigned under this Guaranty shall be absolute and
unconditional, in accordance with its terms, and shall remain in full force and
effect without regard to, and shall not be released, suspended, discharged,
terminated or otherwise affected by, any circumstance or occurrence whatsoever,
including, without limitation: (a) any waiver, indulgence, renewal, extension,
amendment or modification of or addition, consent or supplement to or deletion
from or any other action or inaction under or in respect of the Documents or any
other instruments or agreements relating to the Obligations or any assignment or
transfer of any thereof, (b) any lack of validity or enforceability of any
Document or other documents, instruments or agreements relating to the
Obligations or any assignment or transfer of any thereof, (c) any furnishing of
any additional security to Laurus or its assignees or any acceptance thereof or
any release of any security by Laurus or its assignees, (d) any limitation on
any party's liability or obligation under the Documents or any other documents,
instruments or agreements relating to the Obligations or any assignment or
transfer of any thereof or any invalidity or unenforceability, in whole or in
part, of any such document, instrument or agreement or any term thereof, (e) any
bankruptcy, insolvency, reorganization, composition, adjustment, dissolution,
liquidation or other like proceeding relating to Debtor, or any action taken
with respect to this Guaranty by any trustee or receiver, or by any court, in
any such proceeding, whether or not the undersigned shall have notice or
knowledge of any of the foregoing, (f) any exchange, release or nonperfection of
any collateral, or any release, or amendment or waiver of or consent to
departure from any guaranty or security, for all or any of the Obligations or
(g) any other circumstance which might otherwise constitute a defense available
to, or a discharge of, the undersigned. Any amounts due from the undersigned to
Laurus shall bear interest until such amounts are paid in full at the highest
rate then applicable to the Obligations. Obligations include post-petition
interest whether or not allowed or allowable.

                                        2
<PAGE>

      3. Waivers.

            (a) This Guaranty is a guaranty of payment and not of collection.
      Laurus shall be under no obligation to institute suit, exercise rights or
      remedies or take any other action against Debtor or any other person
      liable with respect to any of the Obligations or resort to any collateral
      security held by it to secure any of the Obligations as a condition
      precedent to the undersigned being obligated to perform as agreed herein
      and each of the Guarantors hereby waives any and all rights which it may
      have by statute or otherwise which would require Laurus to do any of the
      foregoing. Each of the Guarantors further consents and agrees that Laurus
      shall be under no obligation to marshal any assets in favor of Guarantors,
      or against or in payment of any or all of the Obligations. The undersigned
      hereby waives all suretyship defenses and any rights to interpose any
      defense, counterclaim or offset of any nature and description which the
      undersigned may have or which may exist between and among Laurus, Debtor
      and/or the undersigned with respect to the undersigned's obligations under
      this Guaranty, or which Debtor may assert on the underlying debt,
      including but not limited to failure of consideration, breach of warranty,
      fraud, payment (other than cash payment in full of the Obligations),
      statute of frauds, bankruptcy, infancy, statute of limitations, accord and
      satisfaction, and usury.

            (b) Each of the undersigned further waives (i) notice of the
      acceptance of this Guaranty, of the making of any such loans or extensions
      of credit, and of all notices and demands of any kind to which the
      undersigned may be entitled, including, without limitation, notice of
      adverse change in Debtor's financial condition or of any other fact which
      might materially increase the risk of the undersigned and (ii) presentment
      to or demand of payment from anyone whomsoever liable upon any of the
      Obligations, protest, notices of presentment, non-payment or protest and
      notice of any sale of collateral security or any default of any sort.

            (c) Notwithstanding any payment or payments made by the undersigned
      hereunder, or any setoff or application of funds of the undersigned by
      Laurus, the undersigned shall not be entitled to be subrogated to any of
      the rights of Laurus against Debtor or against any collateral or guarantee
      or right of offset held by Laurus for the payment of the Obligations, nor
      shall the undersigned seek or be entitled to seek any contribution or
      reimbursement from Debtor in respect of payments made by the undersigned
      hereunder, until all amounts owing to Laurus by Debtor on account of the
      Obligations are paid in full and Laurus' obligation to extend credit
      pursuant to the Documents have been terminated. If, notwithstanding the
      foregoing, any amount shall be paid to the undersigned on account of such
      subrogation rights at any time when all of the Obligations shall not have
      been paid in full and Laurus' obligation to extend credit pursuant to the
      Documents shall not have been terminated, such amount shall be held by the
      undersigned in trust for Laurus, segregated from other funds of the
      undersigned, and shall forthwith upon, and in any event within two (2)
      business days of, receipt by the undersigned, be turned over to Laurus in
      the exact form received by the undersigned (duly endorsed by the
      undersigned to Laurus, if required), to be applied against the
      Obligations, whether matured or unmatured, in such order as Laurus may
      determine, subject to the provisions of the Documents. Any and all present
      and future debts and obligations of Debtor to any of the undersigned are
      hereby waived and postponed in favor of, and subordinated to the full
      payment and performance of, all present and future debts and Obligations
      of Debtor to Laurus.

                                        3
<PAGE>

      4. Security. All sums at any time to the credit of the undersigned and any
property of the undersigned in Laurus' possession or in the possession of any
bank, financial institution or other entity that directly or indirectly, through
one or more intermediaries, controls or is controlled by, or is under common
control with, Laurus (each such entity, an "Affiliate") shall be deemed held by
Laurus or such Affiliate, as the case may be, as security for any and all of the
undersigned's obligations to Laurus and to any Affiliate of Laurus, no matter
how or when arising and whether under this or any other instrument, agreement or
otherwise.

      5. Representations and Warranties. Each of the undersigned respectively,
hereby jointly and severally represents and warrants (all of which
representations and warranties shall survive until all Obligations are
indefeasibly satisfied in full and the Documents have been irrevocably
terminated), that:

            (a) Corporate Status. It is a corporation, partnership or limited
      liability company, as the case may be, duly organized, validly existing
      and in good standing under the laws of its jurisdiction of organization
      indicated on the signature page hereof and has full power, authority and
      legal right to own its property and assets and to transact the business in
      which it is engaged.

            (b) Authority and Execution. It has full power, authority and legal
      right to execute and deliver, and to perform its obligations under, this
      Guaranty and has taken all necessary corporate, partnership or limited
      liability company, as the case may be, action to authorize the execution,
      delivery and performance of this Guaranty.

            (c) Legal, Valid and Binding Character. This Guaranty constitutes
      its legal, valid and binding obligation enforceable in accordance with its
      terms, except as enforceability may be limited by applicable bankruptcy,
      insolvency, reorganization, moratorium or other laws of general
      application affecting the enforcement of creditor's rights and general
      principles of equity that restrict the availability of equitable or legal
      remedies.

            (d) Violations. The execution, delivery and performance of this
      Guaranty will not violate any requirement of law applicable to it or any
      contract, agreement or instrument to it is a party or by which it or any
      of its property is bound or result in the creation or imposition of any
      mortgage, lien or other encumbrance other than to Laurus on any of its
      property or assets pursuant to the provisions of any of the foregoing,
      which, in any of the foregoing cases, could reasonably be expected to
      have, either individually or in the aggregate, a Material Adverse Effect.

            (e) Consents or Approvals. No consent of any other person or entity
      (including, without limitation, any creditor of the undersigned) and no
      consent, license, permit, approval or authorization of, exemption by,
      notice or report to, or registration, filing or declaration with, any
      governmental authority is required in connection with the execution,
      delivery, performance, validity or enforceability of this Guaranty by it,
      except to the extent that the failure to obtain any of the foregoing could
      not reasonably be expected to have, either individually or in the
      aggregate, a Material Adverse Effect.

            (f) Litigation. No litigation, arbitration, investigation or
      administrative proceeding of or before any court, arbitrator or
      governmental authority, bureau or agency is currently pending or, to the
      best of its knowledge, threatened (i) with respect to this Guaranty or any

                                        4
<PAGE>

      of the transactions contemplated by this Guaranty or (ii) against or
      affecting it, or any of its property or assets, which, in each of the
      foregoing cases, if adversely determined, could reasonably be expected to
      have a Material Adverse Effect.

            (g) Financial Benefit. It has derived or expects to derive a
      financial or other advantage from each and every loan, advance or
      extension of credit made under the Documents or other Obligation incurred
      by the Debtor to Laurus.

      6. Acceleration.

            (a) If any breach of any covenant or condition or other event of
      default shall occur and be continuing under any agreement made by Debtor
      or any of the undersigned to Laurus, or either Debtor or any of the
      undersigned should at any time become insolvent, or make a general
      assignment, or if a proceeding in or under any Insolvency Law shall be
      filed or commenced by, or in respect of, any of the undersigned, or if a
      notice of any lien, levy, or assessment is filed of record with respect to
      any assets of any of the undersigned by the United States of America or
      any department, agency, or instrumentality thereof, or if any taxes or
      debts owing at any time or times hereafter to any one of them becomes a
      lien or encumbrance upon any assets of the undersigned in Laurus'
      possession, or otherwise, any and all Obligations shall for purposes
      hereof, at Laurus' option, be deemed due and payable without notice
      notwithstanding that any such Obligation is not then due and payable by
      Debtor.

            (b) Each of the undersigned will promptly notify Laurus of any
      default by such undersigned in its respective performance or observance of
      any term or condition of any agreement to which the undersigned is a party
      if the effect of such default is to cause, or permit the holder of any
      obligation under such agreement to cause, such obligation to become due
      prior to its stated maturity and, if such an event occurs, Laurus shall
      have the right to accelerate such undersigned's obligations hereunder.

      7. Payments from Guarantors. Laurus, in its sole and absolute discretion,
with or without notice to the undersigned, may apply on account of the
Obligations any payment from the undersigned or any other guarantors, or amounts
realized from any security for the Obligations, or may deposit any and all such
amounts realized in a non-interest bearing cash collateral deposit account to be
maintained as security for the Obligations.

      8. Costs. The undersigned shall pay on demand, all costs, fees and
expenses (including expenses for legal services of every kind) relating or
incidental to the enforcement or protection of the rights of Laurus hereunder or
under any of the Obligations.

      9. No Termination. This is a continuing irrevocable guaranty and shall
remain in full force and effect and be binding upon the undersigned, and each of
the undersigned's successors and assigns, until all of the Obligations have been
paid in full and Laurus' obligation to extend credit pursuant to the Documents
has been irrevocably terminated. If any of the present or future Obligations are
guarantied by persons, partnerships or corporations in addition to the
undersigned, the death, release or discharge in whole or in part or the
bankruptcy, merger, consolidation, incorporation, liquidation or dissolution of
one or more of them shall not discharge or affect the liabilities of any
undersigned under this Guaranty.

                                        5
<PAGE>

      10. Recapture. Anything in this Guaranty to the contrary notwithstanding,
if Laurus receives any payment or payments on account of the liabilities
guaranteed hereby, which payment or payments or any part thereof are
subsequently invalidated, declared to be fraudulent or preferential, set aside
and/or required to be repaid to a trustee, receiver, or any other party under
any Insolvency Law, common law or equitable doctrine, then to the extent of any
sum not finally retained by Laurus, the undersigned's obligations to Laurus
shall be reinstated and this Guaranty shall remain in full force and effect (or
be reinstated) until payment shall have been made to Laurus, which payment shall
be due on demand.

      11. Books and Records. The books and records of Laurus showing the account
between Laurus and Debtor shall be admissible in evidence in any action or
proceeding, shall be binding upon the undersigned for the purpose of
establishing the items therein set forth and shall constitute prima facie proof
thereof.

      12. No Waiver. No failure on the part of Laurus to exercise, and no delay
in exercising, any right, remedy or power hereunder shall operate as a waiver
thereof, nor shall any single or partial exercise by Laurus of any right, remedy
or power hereunder preclude any other or future exercise of any other legal
right, remedy or power. Each and every right, remedy and power hereby granted to
Laurus or allowed it by law or other agreement shall be cumulative and not
exclusive of any other, and may be exercised by Laurus at any time and from time
to time.

      13. Waiver of Jury Trial. EACH OF THE UNDERSIGNED DOES HEREBY KNOWINGLY,
VOLUNTARILY AND INTENTIONALLY WAIVE THE RIGHT TO TRIAL BY JURY IN ANY ACTION OR
PROCEEDING BASED ON OR WITH RESPECT TO THIS GUARANTY OR ANY OF THE TRANSACTIONS
CONTEMPLATED HEREBY OR RELATING OR INCIDENTAL HERETO. THE UNDERSIGNED DOES
HEREBY CERTIFY THAT NO REPRESENTATIVE OR AGENT OF LAURUS HAS REPRESENTED,
EXPRESSLY OR OTHERWISE, THAT LAURUS WOULD NOT, IN THE EVENT OF LITIGATION, SEEK
TO ENFORCE THIS WAIVER OF RIGHT TO JURY TRIAL PROVISION.

      14. Governing Law; Jurisdiction; Amendments. THIS INSTRUMENT CANNOT BE
CHANGED OR TERMINATED ORALLY, AND SHALL BE GOVERNED, CONSTRUED AND INTERPRETED
AS TO VALIDITY, ENFORCEMENT AND IN ALL OTHER RESPECTS IN ACCORDANCE WITH THE
LAWS OF THE STATE OF NEW YORK WITHOUT HAVING EFFECT TO PRINCIPLES OF CONFLICTS
OF LAWS. EACH OF THE UNDERSIGNED EXPRESSLY CONSENTS TO THE JURISDICTION AND
VENUE OF THE SUPREME COURT OF THE STATE OF NEW YORK, COUNTY OF NEW YORK, AND OF
THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF NEW YORK FOR ALL
PURPOSES IN CONNECTION HEREWITH. ANY JUDICIAL PROCEEDING BY THE UNDERSIGNED
AGAINST LAURUS INVOLVING, DIRECTLY OR INDIRECTLY ANY MATTER OR CLAIM IN ANY WAY
ARISING OUT OF, RELATED TO OR CONNECTED HEREWITH SHALL BE BROUGHT ONLY IN THE
SUPREME COURT OF THE STATE OF NEW YORK, COUNTY OF NEW YORK OR THE UNITED STATES
DISTRICT COURT FOR THE SOUTHERN DISTRICT OF NEW YORK. THE UNDERSIGNED FURTHER
CONSENTS THAT ANY SUMMONS, SUBPOENA OR OTHER PROCESS OR PAPERS (INCLUDING,
WITHOUT LIMITATION, ANY NOTICE OR MOTION OR OTHER APPLICATION TO EITHER OF THE
AFOREMENTIONED COURTS OR A JUDGE THEREOF) OR ANY NOTICE IN CONNECTION WITH ANY
PROCEEDINGS HEREUNDER, MAY BE SERVED INSIDE OR OUTSIDE OF THE STATE OF NEW YORK

                                        6
<PAGE>

OR THE SOUTHERN DISTRICT OF NEW YORK BY REGISTERED OR CERTIFIED MAIL, RETURN
RECEIPT REQUESTED, OR BY PERSONAL SERVICE PROVIDED A REASONABLE TIME FOR
APPEARANCE IS PERMITTED, OR IN SUCH OTHER MANNER AS MAY BE PERMISSIBLE UNDER THE
RULES OF SAID COURTS. EACH OF THE UNDERSIGNED WAIVES ANY OBJECTION TO
JURISDICTION AND VENUE OF ANY ACTION INSTITUTED HEREON AND SHALL NOT ASSERT ANY
DEFENSE BASED ON LACK OF JURISDICTION OR VENUE OR BASED UPON FORUM NON
CONVENIENS.

      15. Severability. To the extent permitted by applicable law, any provision
of this Guaranty which is prohibited or unenforceable in any jurisdiction shall,
as to such jurisdiction, be ineffective to the extent of such prohibition or
unenforceability without invalidating the remaining provisions hereof, and any
such prohibition or unenforceability in any jurisdiction shall not invalidate or
render unenforceable such provision in any other jurisdiction.

      16. Amendments, Waivers. No amendment or waiver of any provision of this
Guaranty nor consent to any departure by the undersigned therefrom shall in any
event be effective unless the same shall be in writing executed by each of the
undersigned directly affected by such amendment and/or waiver and Laurus.

      17. Notice. All notices, requests and demands to or upon the undersigned,
shall be in writing and shall be deemed to have been duly given or made (a) when
delivered, if by hand, (b) three (3) days after being sent, postage prepaid, if
by registered or certified mail, (c) when confirmed electronically, if by
facsimile, or (d) when delivered, if by a recognized overnight delivery service
in each event, to the numbers and/or address set forth beneath the signature of
the undersigned.

      18. Successors. Laurus may, from time to time, without notice to the
undersigned, sell, assign, transfer or otherwise dispose of all or any part of
the Obligations and/or rights under this Guaranty. Without limiting the
generality of the foregoing, Laurus may assign, or grant participations to, one
or more banks, financial institutions or other entities all or any part of any
of the Obligations. In each such event, Laurus, its Affiliates and each and
every immediate and successive purchaser, assignee, transferee or holder of all
or any part of the Obligations shall have the right to enforce this Guaranty, by
legal action or otherwise, for its own benefit as fully as if such purchaser,
assignee, transferee or holder were herein by name specifically given such
right. Laurus shall have an unimpaired right to enforce this Guaranty for its
benefit with respect to that portion of the Obligations which Laurus has not
disposed of, sold, assigned, or otherwise transferred.

      19. Release. Nothing except cash payment in full of the Obligations shall
release any of the undersigned from liability under this Guaranty.

                        [Remainder of this page is blank.
                       Signature page immediately follows]

                                        7
<PAGE>

      IN WITNESS WHEREOF, this Guaranty has been executed by the undersigned
this 30th day of June, 2004.

                              GREENMAN TECHNOLOGIES OF MINNESOTA, INC.

                              By:    /s/ Charles E. Coppa
                                     --------------------------------------
                              Name:  Charles E. Coppa
                                     --------------------------------------
                              Title: Treasurer
                                     --------------------------------------

                              Address:   12498 Wyoming Ave. South
                                         Savage, MN 55378
                              Telephone: (952) 894-5280
                              Facsimile: (952) 894-5061
                              State of Incorporation: Minnesota

                              GREENMAN TECHNOLOGIES OF GEORGIA, INC.

                              By:    /s/ Charles E. Coppa
                                     --------------------------------------
                              Name:  Charles E. Coppa
                                     --------------------------------------
                              Title: Treasurer
                                     --------------------------------------

                              Address:   138 Sherrel Ave.
                                         Jackson, GA 30233
                              Telephone: (770) 775-6107
                              Facsimile: (770) 886-4304
                              State of Incorporation: Georgia

                              GREENMAN TECHNOLOGIES OF IOWA, INC.

                              By: /s/ Charles E. Coppa
                              Name: Charles E. Coppa
                              Title: Treasurer

                              Address: 1914 E. Euclid
                                       Des Moines, IA 53013
                              Telephone: (515) 262-4900
                              Facsimile: (515) 262-0514
                              State of Incorporation: Iowa

                                        8
<PAGE>

                              GREENMAN TECHNOLOGIES OF TENNESSEE, INC.

                              By: /s/ Charles E. Coppa
                              Name: Charles E. Coppa
                              Title: Treasurer

                              Address: 190 Parthenon Blvd.
                                       LaVergne, TN 37086
                              Telephone: (615) 793-4282
                              Facsimile: (615) 384-8766
                              State of Incorporation: Tennessee

                              GREENMAN TECHNOLOGIES OF WISCONSIN, INC.

                              By: /s/ Charles E. Coppa
                              Name: Charles E. Coppa
                              Title: Treasurer

                              Address: P.O. Box 913
                                       West Bend, WI 53095-0913
                              Telephone: (952) 894-5280
                              Facsimile: (952) 894-5061
                              State of Incorporation: Wisconsin

                              GREENMAN TECHNOLOGIES OF CALIFORNIA, INC.

                              By: /s/ Charles E. Coppa
                              Name: Charles E. Coppa
                              Title: Treasurer

                              Address: 1501 W. Gladstone Ave.
                                       Azusa, CA 91702
                              Telephone: (626) 633-1174
                              Facsimile: (626) 633-1044
                              State of Incorporation: California

                                        9Exhibit 4.13

                             STOCK PLEDGE AGREEMENT

      This Stock Pledge Agreement (this "Agreement"), dated as of June 30, 2004,
among Laurus Master Fund, Ltd. (the "Pledgee"), GreenMan Technologies, Inc., a
Delaware corporation (the "Company"), and each of the other undersigned pledgors
(the Company and each such other undersigned pledgor, a "Pledgor" and
collectively, the "Pledgors").

                                   BACKGROUND

      The Company has entered into a Securities Purchase Agreement, dated as of
June 30, 2004 (as amended, modified, restated or supplemented from time to time,
the "Securities Purchase Agreement"), and a Security Agreement dated as of June
30, 2004 (as amended, modified, restated or supplemented from time to time, the
"Security Agreement"), pursuant to which the Pledgee provides or will provide
certain financial accommodations to the Company.

      In order to induce the Pledgee to provide or continue to provide the
financial accommodations described in the Securities Purchase Agreement and the
Security Agreement, each Pledgor has agreed to pledge and grant a security
interest in the collateral described herein to the Pledgee on the terms and
conditions set forth herein.

      NOW, THEREFORE, in consideration of the premises and for other good and
valuable consideration the receipt of which is hereby acknowledged, the parties
hereto agree as follows:

      1. Defined Terms. All capitalized terms used herein which are not defined
shall have the meanings given to them in the Securities Purchase Agreement and
the Security Agreement, as applicable.

      2. Pledge and Grant of Security Interest. To secure the full and punctual
payment and performance of (the following clauses (a) and (b), collectively, the
"Indebtedness") (a) the obligations under the Securities Purchase Agreement, the
Related Agreements referred to in the Securities Purchase Agreement, the
Security Agreement and the Ancillary Agreements referred to in the Security
Agreement (the Securities Purchase Agreement, the Related Agreements,the
Security Agreement and the Ancillary Agreements, as each may be amended,
restated, modified and/or supplemented from time to time, collectively, the
"Documents") and (b) all other indebtedness, obligations and liabilities of each
Pledgor to the Pledgee whether now existing or hereafter arising, direct or
indirect, liquidated or unliquidated, absolute or contingent, due or not due and
whether under, pursuant to or evidenced by a note, agreement, guaranty,
instrument or otherwise (in each case, irrespective of the genuineness,
validity, regularity or enforceability of such Indebtedness, or of any
instrument evidencing any of the Indebtedness or of any collateral therefor or
of the existence or extent of such collateral, and irrespective of the
allowability, allowance or disallowance of any or all of such in any case
commenced by or against any Pledgor under Title 11, United States Code,
including, without limitation, obligations or indebtedness of each Pledgor for
post-petition interest, fees, costs and charges that would have accrued or been
added to the Indebtedness but for the commencement of such case),

                                       -1-
<PAGE>

each Pledgor hereby pledges, assigns, hypothecates, transfers and grants a
security interest to Pledgee in all of the following (the "Collateral"):

            (a) the shares of stock set forth on Schedule A annexed hereto and
expressly made a part hereof (together with any additional shares of stock or
other equity interests acquired by any Pledgor after the date hereof, the
"Pledged Stock"), the certificates representing the Pledged Stock and all
dividends, cash, instruments and other property or proceeds from time to time
received, receivable or otherwise distributed in respect of or in exchange for
any or all of the Pledged Stock;

            (b) all additional shares of stock of any issuer (each, an "Issuer")
of the Pledged Stock from time to time acquired by any Pledgor in any manner,
including, without limitation, stock dividends or a distribution in connection
with any increase or reduction of capital, reclassification, merger,
consolidation, sale of assets, combination of shares, stock split, spin-off or
split-off (which shares shall be deemed to be part of the Collateral), and the
certificates representing such additional shares, and all dividends, cash,
instruments and other property or proceeds from time to time received,
receivable or otherwise distributed in respect of or in exchange for any or all
of such shares; and

            (c) all options and rights, whether as an addition to, in
substitution of or in exchange for any shares of any Pledged Stock and all
dividends, cash, instruments and other property or proceeds from time to time
received, receivable or otherwise distributed in respect of or in exchange for
any or all such options and rights.

      3. Delivery of Collateral. All certificates representing or evidencing the
Pledged Stock shall be delivered to and held by or on behalf of Pledgee pursuant
hereto and shall be accompanied by duly executed instruments of transfer or
assignment in blank, all in form and substance satisfactory to Pledgee. Each
Pledgor hereby authorizes the Issuer upon demand by the Pledgee to deliver any
certificates, instruments or other distributions issued in connection with the
Collateral directly to the Pledgee, in each case to be held by the Pledgee,
subject to the terms hereof. Upon an Event of Default (as defined below) under
the Note that has occurred and is continuing beyond any applicable grace period,
the Pledgee shall have the right, during such time in its discretion and without
notice to the Pledgor, to transfer to or to register in the name of the Pledgee
or any of its nominees any or all of the Pledged Stock. In addition, the Pledgee
shall have the right at such time to exchange certificates or instruments
representing or evidencing Pledged Stock for certificates or instruments of
smaller or larger denominations.

      4. Representations and Warranties of each Pledgor. Each Pledgor jointly
and severally represents and warrants to the Pledgee (which representations and
warranties shall be deemed to continue to be made until all of the Indebtedness
has been paid in full and each Document and each agreement and instrument
entered into in connection therewith has been irrevocably terminated) that:

            (a) the execution, delivery and performance by each Pledgor of this
Agreement and the pledge of the Collateral hereunder do not and will not result
in any violation of any agreement, indenture, instrument, license, judgment,

                                       -2-
<PAGE>

decree, order, law, statute, ordinance or other governmental rule or regulation
applicable to any Pledgor;

            (b) this Agreement constitutes the legal, valid, and binding
obligation of each Pledgor enforceable against each Pledgor in accordance with
its terms;

            (c) (i) all Pledged Stock owned by each Pledgor is set forth on
Schedule A hereto and (ii) each Pledgor is the direct and beneficial owner of
each share of the Pledged Stock;

            (d) all of the shares of the Pledged Stock have been duly
authorized, validly issued and are fully paid and nonassessable;

            (e) no consent or approval of any person, corporation, governmental
body, regulatory authority or other entity, is or will be necessary for (i) the
execution, delivery and performance of this Agreement, (ii) the exercise by the
Pledgee of any rights with respect to the Collateral or (iii) the pledge and
assignment of, and the grant of a security interest in, the Collateral
hereunder;

            (f) there are no pending or, to the best of Pledgor's knowledge,
threatened actions or proceedings before any court, judicial body,
administrative agency or arbitrator which may materially adversely affect the
Collateral;

            (g) each Pledgor has the requisite power and authority to enter into
this Agreement and to pledge and assign the Collateral to the Pledgee in
accordance with the terms of this Agreement.

            (h) each Pledgor owns each item of the Collateral and, except for
the pledge and security interest granted to Pledgee hereunder, the Collateral
shall be, immediately following the closing of the transactions contemplated by
the Documents, free and clear of any other security interest, pledge, claim,
lien, charge, hypothecation, assignment, offset or encumbrance whatsoever
(collectively, "Liens").

            (i) there are no restrictions on transfer of the Pledged Stock
contained in the certificate of incorporation or by-laws (or equivalent
organizational documents) of the Issuer or otherwise which have not otherwise
been enforceably and legally waived by the necessary parties.

            (j) none of the Pledged Stock has been issued or transferred in
violation of the securities registration, securities disclosure or similar laws
of any jurisdiction to which such issuance or transfer may be subject.

            (k) the pledge and assignment of the Collateral and the grant of a
security interest under this Agreement vest in the Pledgee all rights of each
Pledgor in the Collateral as contemplated by this Agreement.

                                       -3-
<PAGE>

            (l) The Pledged Stock constitutes one hundred percent (100%) of the
issued and outstanding shares of capital stock of each Issuer.

      5. Covenants. Each Pledgor jointly and severally covenants that, until the
Indebtedness shall be satisfied in full and each Document and each agreement and
instrument entered into in connection therewith is irrevocably terminated:

            (a) No Pledgor will sell, assign, transfer, convey, or otherwise
dispose of its rights in or to the Collateral or any interest therein; nor will
any Pledgor create, incur or permit to exist any Lien whatsoever with respect to
any of the Collateral or the proceeds thereof other than that created hereby.

            (b) Each Pledgor will, at its expense, defend Pledgee's right, title
and security interest in and to the Collateral against the claims of any other
party.

            (c) Each Pledgor shall at any time, and from time to time, upon the
written request of Pledgee, execute and deliver such further documents and do
such further acts and things as Pledgee may reasonably request in order to
effect the purposes of this Agreement including, but without limitation,
delivering to Pledgee upon the occurrence of an Event of Default irrevocable
proxies in respect of the Collateral in form satisfactory to Pledgee. Until
receipt thereof, upon an Event of Default that has occurred and is continuing
beyond any applicable grace period, this Agreement shall constitute Pledgor's
proxy to Pledgee or its nominee to vote all shares of Collateral then registered
in each Pledgor's name.

            (d) No Pledgor will consent to or approve the issuance of (i) any
additional shares of any class of capital stock or other equity interests of the
Issuer; or (ii) any securities convertible either voluntarily by the holder
thereof or automatically upon the occurrence or nonoccurrence of any event or
condition into, or any securities exchangeable for, any such shares, unless, in
either case, such shares are pledged as Collateral pursuant to this Agreement.

      6. Voting Rights and Dividends. In addition to the Pledgee's rights and
remedies set forth in Section 8 hereof, in case an Event of Default shall have
occurred and be continuing, beyond any applicable cure period, the Pledgee shall
(i) be entitled to vote the Collateral, (ii) be entitled to give consents,
waivers and ratifications in respect of the Collateral (each Pledgor hereby
irrevocably constituting and appointing the Pledgee, with full power of
substitution, the proxy and attorney-in-fact of each Pledgor for such purposes)
and (iii) be entitled to collect and receive for its own use cash dividends paid
on the Collateral. No Pledgor shall be permitted to exercise or refrain from
exercising any voting rights or other powers if, in the reasonable judgment of
the Pledgee, such action would have a material adverse effect on the value of
the Collateral or any part thereof; and, provided, further, that each Pledgor
shall give at least five (5) days' written notice of the manner in which such
Pledgor intends to exercise, or the reasons for refraining from exercising, any
voting rights or other powers other than with respect to any election of
directors and voting with respect to any incidental matters. Following the
occurrence of an Event of Default, all dividends and all other distributions in
respect of any of the Collateral, shall be delivered to the Pledgee to hold as
Collateral and shall, if received by any Pledgor, be received in trust for the
benefit of the Pledgee, be segregated from the other property or funds of any

                                       -4-
<PAGE>

other Pledgor, and be forthwith delivered to the Pledgee as Collateral in the
same form as so received (with any necessary endorsement).

      7. Event of Default. An Event of Default shall be deemed to have occurred
and may be declared by the Pledgee upon the happening of any of the following
events:

            (a) An "Event of Default" under any Document or any agreement or
note related to any Document shall have occurred and be continuing beyond any
applicable cure period;

            (b) Any Pledgor shall default in the performance of any of its
obligations under any agreement between any Pledgor and Pledgee, including,
without limitation, this Agreement, and such default shall not be cured within
any applicable cure period as provided for in such agreement (with the cure
period for any default in the performance of any obligations under this
Agreement being thirty (30) days after the occurrence thereof);

            (c) Any representation or warranty of any Pledgor made herein, in
any Document or in any agreement, statement or certificate given in writing
pursuant hereto or thereto or in connection herewith or therewith shall be false
or misleading in any material respect;

            (d) Any portion of the Collateral is subjected to levy of execution,
attachment, distraint or other judicial process; or any portion of the
Collateral is the subject of a claim (other than by the Pledgee) of a Lien or
other right or interest in or to the Collateral and such levy or claim shall not
be cured, disputed or stayed within a period of thirty (30) business days after
the occurrence thereof; or

            (e) Any Pledgor shall (i) apply for, consent to, or suffer to exist
the appointment of, or the taking of possession by, a receiver, custodian,
trustee, liquidator or other fiduciary of itself or of all or a substantial part
of its property, (ii) make a general assignment for the benefit of creditors,
(iii) commence a voluntary case under any state or federal bankruptcy laws (as
now or hereafter in effect), (iv) be adjudicated a bankrupt or insolvent, (v)
file a petition seeking to take advantage of any other law providing for the
relief of debtors, (vi) acquiesce to, or fail to have dismissed, within sixty
(60) days, any petition filed against it in any involuntary case under such
bankruptcy laws, or (vii) take any action for the purpose of effecting any of
the foregoing.

      8. Remedies. In case an Event of Default shall have occurred and be
declared by the Pledgee, the Pledgee may:

            (a) Transfer any or all of the Collateral into its name, or into the
name of its nominee or nominees;

            (b) Exercise all corporate rights with respect to the Collateral
including, without limitation, all rights of conversion, exchange, subscription
or any other rights, privileges or options pertaining to any shares of the
Collateral as if it were the absolute owner thereof, including, but without

                                       -5-
<PAGE>

limitation, the right to exchange, at its discretion, any or all of the
Collateral upon the merger, consolidation, reorganization, recapitalization or
other readjustment of the Issuer thereof, or upon the exercise by the Issuer of
any right, privilege or option pertaining to any of the Collateral, and, in
connection therewith, to deposit and deliver any and all of the Collateral with
any committee, depository, transfer agent, registrar or other designated agent
upon such terms and conditions as it may determine, all without liability except
to account for property actually received by it; and

            (c) Subject to any requirement of applicable law, sell, assign and
deliver the whole or, from time to time, any part of the Collateral at the time
held by the Pledgee, at any private sale or at public auction, with or without
demand, advertisement or notice of the time or place of sale or adjournment
thereof or otherwise (all of which are hereby waived, except such notice as is
required by applicable law and cannot be waived), for cash or credit or for
other property for immediate or future delivery, and for such price or prices
and on such terms as the Pledgee in its sole discretion may determine, or as may
be required by applicable law.

            Each Pledgor hereby waives and releases any and all right or equity
of redemption, whether before or after sale hereunder. At any such sale, unless
prohibited by applicable law, the Pledgee may bid for and purchase the whole or
any part of the Collateral so sold free from any such right or equity of
redemption. All moneys received by the Pledgee hereunder whether upon sale of
the Collateral or any part thereof or otherwise shall be held by the Pledgee and
applied by it as provided in Section 10 hereof. No failure or delay on the part
of the Pledgee in exercising any rights hereunder shall operate as a waiver of
any such rights nor shall any single or partial exercise of any such rights
preclude any other or future exercise thereof or the exercise of any other
rights hereunder. The Pledgee shall have no duty as to the collection or
protection of the Collateral or any income thereon nor any duty as to
preservation of any rights pertaining thereto, except to apply the funds in
accordance with the requirements of Section 10 hereof. The Pledgee may exercise
its rights with respect to property held hereunder without resort to other
security for or sources of reimbursement for the Indebtedness. In addition to
the foregoing, Pledgee shall have all of the rights, remedies and privileges of
a secured party under the Uniform Commercial Code of New York regardless of the
jurisdiction in which enforcement hereof is sought.

      9. Private Sale. Each Pledgor recognizes that the Pledgee may be unable to
effect (or to do so only after delay which would adversely affect the value that
might be realized from the Collateral) a public sale of all or part of the
Collateral by reason of certain prohibitions contained in the Securities Act,
and may be compelled to resort to one or more private sales to a restricted
group of purchasers who will be obliged to agree, among other things, to acquire
such Collateral for their own account, for investment and not with a view to the
distribution or resale thereof. Each Pledgor agrees that any such private sale
may be at prices and on terms less favorable to the seller than if sold at
public sales and that such private sales shall be deemed to have been made in a
commercially reasonable manner. Each Pledgor agrees that the Pledgee has no
obligation to delay sale of any Collateral for the period of time necessary to
permit the Issuer to register the Collateral for public sale under the
Securities Act.

                                       -6-
<PAGE>

      10. Proceeds of Sale. The proceeds of any collection, recovery, receipt,
appropriation, realization or sale of the Collateral shall be applied by the
Pledgee as follows:

            (a) First, to the payment of all costs, reasonable expenses and
charges of the Pledgee and to the reimbursement of the Pledgee for the prior
payment of such costs, reasonable expenses and charges incurred in connection
with the care and safekeeping of the Collateral (including, without limitation,
the reasonable expenses of any sale or any other disposition of any of the
Collateral), the expenses of any taking, attorneys' fees and reasonable
expenses, court costs, any other fees or expenses incurred or expenditures or
advances made by Pledgee in the protection, enforcement or exercise of its
rights, powers or remedies hereunder;

            (b) Second, to the payment of the Indebtedness, in whole or in part,
in such order as the Pledgee may elect, whether or not such Indebtedness is then
due;

            (c) Third, to such persons, firms, corporations or other entities as
required by applicable law including, without limitation, Section 9-504(1)(c) of
the UCC; and

            (d) Fourth, to the extent of any surplus to the Pledgors or as a
court of competent jurisdiction may direct.

            In the event that the proceeds of any collection, recovery, receipt,
appropriation, realization or sale are insufficient to satisfy the Indebtedness,
each Pledgor shall be jointly and severally liable for the deficiency plus the
costs and fees of any attorneys employed by Pledgee to collect such deficiency.

      11. Waiver of Marshaling. Each Pledgor hereby waives any right to compel
any marshaling of any of the Collateral.

      12. No Waiver. Any and all of the Pledgee's rights with respect to the
Liens granted under this Agreement shall continue unimpaired, and Pledgor shall
be and remain obligated in accordance with the terms hereof, notwithstanding (a)
the bankruptcy, insolvency or reorganization of any Pledgor, (b) the release or
substitution of any item of the Collateral at any time, or of any rights or
interests therein, or (c) any delay, extension of time, renewal, compromise or
other indulgence granted by the Pledgee in reference to any of the Indebtedness.
Each Pledgor hereby waives all notice of any such delay, extension, release,
substitution, renewal, compromise or other indulgence, and hereby consents to be
bound hereby as fully and effectively as if such Pledgor had expressly agreed
thereto in advance. No delay or extension of time by the Pledgee in exercising
any power of sale, option or other right or remedy hereunder, and no failure by
the Pledgee to give notice or make demand, shall constitute a waiver thereof, or
limit, impair or prejudice the Pledgee's right to take any action against any
Pledgor or to exercise any other power of sale, option or any other right or
remedy.

      13. Expenses. The Collateral shall secure, and each Pledgor shall pay to
Pledgee on demand, from time to time, all reasonable costs and expenses,
(including but not limited to, reasonable attorneys' fees and costs, taxes, and
all transfer, recording, filing and other charges) of, or incidental to, the
custody, care, transfer, administration of the Collateral or any other

                                       -7-
<PAGE>

collateral, or in any way relating to the enforcement, protection or
preservation of the rights or remedies of the Pledgee under this Agreement or
with respect to any of the Indebtedness.

      14. The Pledgee Appointed Attorney-In-Fact and Performance by the Pledgee.
Upon the occurrence of an Event of Default, each Pledgor hereby irrevocably
constitutes and appoints the Pledgee as such Pledgor's true and lawful
attorney-in-fact, with full power of substitution, to execute, acknowledge and
deliver any instruments and to do in such Pledgor's name, place and stead, all
such acts, things and deeds for and on behalf of and in the name of such
Pledgor, which such Pledgor could or might do or which the Pledgee may deem
necessary, desirable or convenient to accomplish the purposes of this Agreement,
including, without limitation, to execute such instruments of assignment or
transfer or orders and to register, convey or otherwise transfer title to the
Collateral into the Pledgee's name. Each Pledgor hereby ratifies and confirms
all that said attorney-in-fact may so do and hereby declares this power of
attorney to be coupled with an interest and irrevocable. If any Pledgor fails to
perform any agreement herein contained, the Pledgee may itself perform or cause
performance thereof, and any costs and expenses of the Pledgee incurred in
connection therewith shall be paid by the Pledgors as provided in Section 10
hereof.

      15. Waivers.

            (a) EACH PARTY HERETO HEREBY EXPRESSLY WAIVES ANY RIGHT TO TRIAL BY
JURY OF ANY CLAIM, DEMAND, ACTION OR CAUSE OF ACTION (A) ARISING UNDER THIS
AGREEMENT OR ANY OTHER INSTRUMENT, DOCUMENT OR AGREEMENT EXECUTED OR DELIVERED
IN CONNECTION HEREWITH, OR (B) IN ANY WAY CONNECTED WITH OR RELATED OR
INCIDENTAL TO THE DEALINGS OF THE PARTIES HERETO OR ANY OTHER AGREEMENT EXECUTED
OR DELIVERED BY THEM IN CONNECTION HEREWITH, OR THE TRANSACTIONS RELATED HERETO
OR THERETO, IN EACH CASE WHETHER NOW EXISTING OR HEREAFTER ARISING, AND WHETHER
SOUNDING IN CONTRACT OR TORT OR OTHERWISE AND EACH PARTY HERETO HEREBY AGREES
AND CONSENTS THAT ANY CLAIM, DEMAND, ACTION OR CAUSE OF ACTION SHALL BE DECIDED
BY COURT TRIAL WITHOUT A JURY, AND THAT ANY PARTY MAY FILE AN ORIGINAL
COUNTERPART OR A COPY OF THIS SECTION WITH ANY COURT AS WRITTEN EVIDENCE OF THE
CONSENT OF EACH PARTY TO THE WAIVER OF ITS RIGHT TO TRIAL BY JURY.

      16. Recapture. Notwithstanding anything to the contrary in this Agreement,
if the Pledgee receives any payment or payments on account of the Indebtedness,
which payment or payments or any part thereof are subsequently invalidated,
declared to be fraudulent or preferential, set aside and/or required to be
repaid to a trustee, receiver, or any other party under the United States
Bankruptcy Code, as amended, or any other federal or state bankruptcy,
reorganization, moratorium or insolvency law relating to or affecting the
enforcement of creditors' rights generally, common law or equitable doctrine,
then to the extent of any sum not finally retained by the Pledgee, each
Pledgor's obligations to the Pledgee shall be reinstated and this Agreement
shall remain in full force and effect (or be reinstated) until payment shall
have been made to Pledgee, which payment shall be due on demand.

                                       -8-
<PAGE>

      17. Captions. All captions in this Agreement are included herein for
convenience of reference only and shall not constitute part of this Agreement
for any other purpose.

      18. Miscellaneous.

            (a) This Agreement constitutes the entire and final agreement among
the parties with respect to the subject matter hereof and may not be changed,
terminated or otherwise varied except by a writing duly executed by the parties
hereto.

            (b) No waiver of any term or condition of this Agreement, whether by
delay, omission or otherwise, shall be effective unless in writing and signed by
the party sought to be charged, and then such waiver shall be effective only in
the specific instance and for the purpose for which given.

            (c) In the event that any provision of this Agreement or the
application thereof to any Pledgor or any circumstance in any jurisdiction
governing this Agreement shall, to any extent, be invalid or unenforceable under
any applicable statute, regulation, or rule of law, such provision shall be
deemed inoperative to the extent that it may conflict therewith and shall be
deemed modified to conform to such statute, regulation or rule of law, and the
remainder of this Agreement and the application of any such invalid or
unenforceable provision to parties, jurisdictions, or circumstances other than
to whom or to which it is held invalid or unenforceable shall not be affected
thereby, nor shall same affect the validity or enforceability of any other
provision of this Agreement.

            (d) This Agreement shall be binding upon each Pledgor, and each
Pledgor's successors and assigns, and shall inure to the benefit of the Pledgee
and its successors and assigns.

            (e) Any notice or other communication required or permitted pursuant
to this Agreement shall be given in accordance with the Securities Purchase
Agreement and the Security Agreement.

            (f) This Agreement shall be governed by and construed and enforced
in all respects in accordance with the laws of the State of New York applied to
contracts to be performed wholly within the State of New York.

            (g) EACH PLEDGOR EXPRESSLY CONSENTS TO THE JURISDICTION AND VENUE OF
EACH COURT OF COMPETENT JURISDICTION LOCATED IN THE STATE OF NEW YORK FOR ALL
PURPOSES IN CONNECTION WITH THIS AGREEMENT. ANY JUDICIAL PROCEEDING INVOLVING,
DIRECTLY OR INDIRECTLY ANY MATTER OR CLAIM IN ANY WAY ARISING OUT OF, RELATED TO
OR CONNECTED WITH THIS AGREEMENT SHALL BE BROUGHT ONLY IN A STATE COURT LOCATED
IN THE COUNTY OF NEW YORK, STATE OF NEW YORK. EACH PLEDGOR FURTHER CONSENTS THAT
ANY SUMMONS, SUBPOENA OR OTHER PROCESS OR PAPERS (INCLUDING, WITHOUT LIMITATION,

                                       -9-
<PAGE>

ANY NOTICE OR MOTION OR OTHER APPLICATION TO EITHER OF THE AFOREMENTIONED COURTS
OR A JUDGE THEREOF) OR ANY NOTICE IN CONNECTION WITH ANY PROCEEDINGS HEREUNDER,
MAY BE SERVED INSIDE OR OUTSIDE OF THE STATE OF NEW YORK OR THE SOUTHERN
DISTRICT OF NEW YORK BY REGISTERED OR CERTIFIED MAIL, RETURN RECEIPT REQUESTED,
OR BY PERSONAL SERVICE PROVIDED A REASONABLE TIME FOR APPEARANCE IS PERMITTED,
OR IN SUCH OTHER MANNER AS MAY BE PERMISSIBLE UNDER THE RULES OF SAID COURTS.
EACH PLEDGOR WAIVES ANY OBJECTION TO JURISDICTION AND VENUE OF ANY ACTION
INSTITUTED HEREON AND SHALL NOT ASSERT ANY DEFENSE BASED ON LACK OF JURISDICTION
OR VENUE OR BASED UPON FORUM NON CONVENIENS.

            (h) This Agreement may be executed in one or more counterparts, each
of which shall be deemed an original and all of which when taken together shall
constitute one and the same agreement. Any signature delivered by a party by
facsimile transmission shall be deemed an original signature hereto.

                  [Remainder of Page Intentionally Left Blank]

                                      -10-
<PAGE>

      IN WITNESS WHEREOF, the parties have duly executed this Agreement as of
the day and year first written above.

                             GREENMAN TECHNOLOGIES, INC.

                             By: /s/ Robert H. Davis
                             Name: Robert H. Davis
                             Title: Chief Executive Officer

                             GREENMAN TECHNOLOGIES OF MINNESOTA, INC.

                             By: /s/ Charles E. Coppa
                             Name: Charles E. Coppa
                             Title: Treasurer

                             GREENMAN TECHNOLOGIES OF GEORGIA, INC.

                             By: /s/ Charles E. Coppa
                             Name: Charles E. Coppa
                             Title: Treasurer

                             GREENMAN TECHNOLOGIES OF IOWA, INC.

                             By: /s/ Charles E. Coppa
                             Name: Charles E. Coppa
                             Title: Treasurer

                             GREENMAN TECHNOLOGIES OF TENNESSEE, INC.

                             By: /s/ Charles E. Coppa
                             Name: Charles E. Coppa
                             Title: Treasurer

                             GREENMAN TECHNOLOGIES OF WISCONSIN, INC.

                             By: /s/ Charles E. Coppa
                             Name: Charles E. Coppa
                             Title: Treasurer

                                      -11-
<PAGE>

                             GREENMAN TECHNOLOGIES OF CALIFORNIA, INC.

                             By: /s/ Charles E. Coppa
                             Name: Charles E. Coppa
                             Title: Treasurer

                                      -12-
<PAGE>

                             LAURUS MASTER FUND, LTD.

                             By: /s/ Eugene Grin
                                 Name: Eugene Grin
                                 Title: Director

                                      -13-
<PAGE>

                    SCHEDULE A to the Stock Pledge Agreement

                                                    Pledged Stock
                                                    -------------

<TABLE>
<CAPTION>
--------------------------------------------------------------------------------------------------------------------------
          Pledgor                   Issuer          Class of Stock        Stock Certificate    Par Value      Number of
          -------                   ------          --------------        ------------------   ---------      ---------
                                                                                Number                         Shares
                                                                                ------                         ------
--------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>             <C>                   <C>                 <C>             <C>
   [Insert Pledgors and
      Pledged Stock]
--------------------------------------------------------------------------------------------------------------------------

--------------------------------------------------------------------------------------------------------------------------

--------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                      -14-

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00069-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00069-of-00352.parquet"}]]