Document:

<PAGE>

                                                                   EXHIBIT 10.25

Confidential materials omitted and filed separately with the Securities and
Exchange Commission pursuant to a request for confidential treatment. Asterisks
denote such omissions.

                          AMENDMENT TO SUPPLY CONTRACTS

This Agreement (the "Amendment") is entered into this __ day of July, 2001 by
and between Daramic, Inc. ("Daramic") and Exide Corporation and all of its
worldwide Affiliates ("Exide").

                                R E C I T A L S:
                                 ---------------

A. On December 15, 1999, Exide and Daramic entered into a North American Supply
Agreement for the supply of Separators (the "Exide-NA Agreement"). All
capitalized terms used but not defined in this Amendment shall have the meaning
described in the Exide-NA Agreement.

B. On January 1, 1997, Daramic entered into a worldwide Purchase and Sale
Agreement with GNB Technologies, Inc. ("GNB") for the supply of certain products
to GNB and its subsidiaries (the "GNB Agreement").

C. On January 1, 1996, Daramic and Exide entered into an Agreement for the
Supply of Battery Separators for Lead Acid Starter and Industrial Batteries to
Exide's facilities located outside of North America (the "Exide-Europe
Agreement"). On December 15, 1999, Exide and Daramic entered into a First
Amendment to Supply Agreement by which they extended the term of the
Exide-Europe Agreement through December 31, 2003. The Exide-NA Agreement, GNB
Agreement and Exide-Europe Agreement may be referred to collectively as the
"Supply Contracts."

D. On or about September 29, 2000, Exide acquired substantially all of the
assets and liabilities of GNB, including, without limitation, GNB's rights and
obligations under the GNB Agreement. Because of this acquisition, Exide and
Daramic now wish to clarify and amend certain of their obligations and rights
under the Supply Contracts.

NOW, THEREFORE, the parties agree as follows:

                              Golf Cart Separators

   1. GCS Supply Agreement. Exide and Daramic agree to enter into an
agreement, in the form attached as Attachment 1, for the supply of separators to
be used in golf cart batteries (the "GCS Supply Agreement").

                                  GNB Agreement

   2. Termination of GNB Agreement. The parties agree that the GNB Agreement
is cancelled as of the date of this Amendment. Automotive battery separator
(defined as polymeric, microporous separators) volume previously purchased under
the GNB Agreement is included in the new Minimum Purchase Requirement described
below for the amended Exide-NA Agreement.

<PAGE>

     3.  GNB Rebate.  Under the GNB Agreement, GNB would have been entitled to
certain rebates described in Section 4.3 of the GNB Agreement had they purchased
certain agreed volumes of separators under that Agreement in 2000. However,
GNB's actual purchases in 2000 did not reach these levels, and therefore neither
Exide nor GNB is entitled to claim any such rebate under the GNB Agreement.

                             Exide-Europe Agreement

     4.  Amendment  of Exide-Europe Agreement. The parties hereby agree that the
Exide-Europe Agreement will be terminated and replaced by the execution of a
revised Automotive and Industrial Supply Contract in the form attached hereto as
Attachment 2 (the "AI Supply Agreement").

                               Exide-NA Agreement

     5.  Title.  The title of the Exide-NA Agreement is hereby changed to "North
American, Australian and New Zealand Supply Agreement for Automotive
Separators".

     6.  2000 Deficit Amount.  The parties agree that the Deficit Amount due and
payable by Exide to Daramic under the Exide-NA Agreement for calendar year 2000
is [*****]. This amount was due and payable on or before February 15, 2001. On
February 28, 2001, Exide made a partial payment of [*****] towards satisfaction
of this Deficit Amount. The balance of the Deficit Amount will be repaid as
follows: Exide will amortize [*****](which amount includes the balance of the
2000 Deficit Amount, plus an interest charge of [*****]) by an up-charge of
[*****] per thousand lineal feet of Separators purchased in 2001, with a minimum
amortization of [*****] per month, beginning April 1, 2001. Daramic will invoice
Exide for these up-charge amounts over the balance of calendar year 2001. If for
any reason the full [*****] has not been paid on or before January 15, 2002,
Exide will make a lump sum payment to Daramic on or before that date to repay
this amount in full.

     7.  Exide-NA Agreement - Amendments  Exide and Daramic agree to the
following amendments to the Exide-NA Agreement:

     a.  Definitions  The following definitions and amendments are hereby added
     or made to the Exide-NA Agreement:

          The definition of "Contract Year" shall be revised to mean each
     calendar year during the Term of the Exide-NA Agreement.

         Exhibit A containing the "Prices" is amended to include the prices for
     Separators previously purchased by GNB. The revised Price list is attached
     to this Amendment as Attachment 3. Prior to the date of this Amendment,
     Daramic has incurred Substantial Changes in its Manufacturing Costs (all as
     defined in Section 4 of the Exide-NA

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     Agreement) which would have otherwise resulted in Price increases under the
     Exide-NA Agreement. However, as part of this Amendment, Daramic has agreed
     to hold in abeyance any such price increases and to retain pricing at the
     levels described in Attachment 3 until January 1, 2002. On or after January
     1, 2002, Daramic may adjust all Prices as described in Sections 4.2 and 4.3
     of the Exide-NA Agreement to reflect changes in its Manufacturing Costs
     incurred since January 1, 2001.

          "Separator" shall mean polymeric, microporous and/or similar battery
     separators for use in automotive (starting, lighting and ignition)
     batteries which were previously manufactured by Exide for its own use
     utilizing the manufacturing equipment and facilities currently located at
     the Corydon, Indiana facility, or by Daramic at its Owensboro, Kentucky
     facility. Current products which meet these requirements are listed in
     Exhibit A attached hereto and made a part hereof. New products with
     different widths, thicknesses, backweb thicknesses, etc. may be added to
     Exhibit A from time to time, but only upon the mutual written agreement of
     the parties.

          Exhibit B containing the "Specifications" is amended to include the
     specifications for Separators previously purchased by GNB. The revised
     Specifications are attached to this Amendment as Attachment 4. The parties
     will cooperate together and will use their reasonable commercial efforts to
     standardize the Specifications for both the Exide and former GNB Separators
     purchased under the Exide-NA Agreement as soon as practicable, provided
     that Exide shall have the final say as to the acceptability of the
     standardized Specifications.

          The "Term" of this Agreement shall be extended from the Effective Date
     through December 31, 2009.

     b.   Minimum Purchase Requirement

     Section 2 of the Exide-NA Agreement is amended to read as follows:

        2.     Purchase and Supply Commitments

          2.1  Each Contract Year during the Term of this Agreement, and subject
     to the terms and conditions set forth below, Exide shall purchase from
     Daramic, and Daramic agrees to supply to Exide,[*****] Separators listed on
     Exhibit A in Exide's North American, Australian and New Zealand
     manufacturing facilities, which requirements shall be no less than [*****]
     of Separators, of which no less than [*****] of such Separators will have
     [*****] (for a total of approximately [*****] of Separators) (hereinafter
     referred to as Exide's "Minimum Purchase Requirement"). Exide's purchases
     for use in producing batteries of any type outside of North America,
     Australia or New Zealand, or for producing non-automotive batteries within
     North America, Australia and New Zealand, shall not

                                       3

<PAGE>

     count towards this Minimum Purchase Requirement. If, at any time during the
     Term of this Agreement, Exide (a) acquires all or part ownership of any of
     Daramic's Customers (as defined below) or (b) establishes a partnership or
     other joint venture relationship with any of Daramic's Customers, then and
     in such event(s), any purchases of Separators by Exide or these partnership
     or joint venture entities up to but not in excess of the average annual
     purchases by such Customers from Daramic over the two years prior to
     Exide's purchase of or involvement with such entities shall not count
     toward the Minimum Purchase Requirement. If, at any time during the Term of
     this Agreement, Exide acquires substantially all of the assets of a battery
     manufacturing facility owned by any of Daramic's Customers and such
     facility, at the time of the acquisition thereof by Exide, was being
     supplied with Separators purchased from Daramic, then purchases by Exide
     for use at such facility shall not count toward the Minimum Purchase
     Requirement. For purposes of Sections 2.1 and 2.2, Daramic's "Customers"
     shall mean the customers listed on Exhibit C attached hereto or their
     successors; provided, however, that such customers are purchasing
     Separators from Daramic at the time of the applicable transaction with
     Exide. Exide warrants that it will not cause or influence any Customer of
     Daramic to stop purchasing from Daramic in anticipation of a potential
     acquisition by or of Exide with the objective of avoiding the intent of
     this section 2. Daramic acknowledges and agrees that Exhibit C attached
     hereto contains a complete and accurate listing of Daramic's current
     customers as of the date of this Amendment.

          2.2  [*****]

          2.3  If Exide fails to meet its Minimum Purchase Requirement in any
     Contract Year, then Exide agrees to pay Daramic, (in accordance with
     Section 2.8 below), an amount calculated as follows (the "Deficit Amount"):

          ([*****] lineal feet minus the actual lineal feet purchased in that
          Contract Year)

               multiplied by

          [*****] (the "Base Multiplier")

               equals

          the Deficit Amount, provided, however, that in no event shall the
     Deficit Amount exceed [*****] in any Contract Year.

          2.4  The parties acknowledge and agree that the underlying intent of
     Sections 2.1 and 2.2 above is that Daramic should realize at least
     [*****]

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     [*****] (and approximately [*****]) of incremental Separator sales volume
     at contribution margins approximately equal to the Base Multiplier as a
     result of this Agreement. The addition of this incremental sales volume is
     an integral part of the consideration for the Purchase Agreement. This
     entire Agreement, and particularly Sections 2.1 and 2.2 above, shall be
     interpreted consistent with and in an effort to give effect to the parties'
     intent as described in this Section 2.4.

          2.5  By October 1 of each Contract Year (and April 1, 2000 for the
     first Contract Year), Exide shall provide Daramic with a written annual
     estimate of its Separator requirements for the next succeeding calendar
     year. The estimate shall indicate Exide's estimated requirements for
     Separators broken down by type for each of Exide's locations for that
     calendar year. Commencing April 1, 2000, Exide shall also provide Daramic
     with quarterly delivery forecasts for Separators broken down by type for
     each of Exide's locations with appropriate lead times. During the Term of
     this Agreement, Exide shall update such forecasts on a rolling basis at
     least once every month.

          2.6  When and if Exide begins purchasing a polymer based battery
     separator for golf cart batteries ("Golf Cart Separators") from Daramic
     pursuant to the GCS Supply Agreement, such purchases of Golf Cart
     Separators shall not count toward satisfaction of Exide's Minimum Purchase
     Requirement. However, [*****] of the actual, final net invoiced and
     collected sales price for all Golf Cart Separators purchased by Exide from
     Daramic under the GCS Supply Agreement at a minimum average price of
     [*****], will be treated as a credit to offset any Deficit Amount otherwise
     payable by Exide under this Agreement, up to a maximum setoff of [*****] in
     any calendar year (the "GCS Credit"). Exide will not receive any GCS Credit
     for Golf Cart Separators purchased at an average price less than [*****] or
     that are priced to match "Lower Priced Offers" as defined in section 3.4 of
     the GCS Supply Agreement. The GCS Credit is nonrefundable and must be used
     to offset Deficit Amounts that accrue within the same calendar year during
     which the Golf Cart Separators are purchased. It cannot be carried forward
     nor can it be carried back to offset previous Deficit Amounts. In no event
     will the GCS Credit have any cash value. Further, the GCS Credit is
     nonrefundable and results in no other cash benefit other than for use as a
     setoff against any Deficit Amount which might otherwise be payable by Exide
     under this Agreement that may have accrued during the same calendar year.
     If GCS Credits are unused because there is not a resulting Deficit Amount
     sufficient to absorb the credit amount, the credit is lost. The GCS Credit
     is only accrued for sales by Daramic to Exide of polymer based Golf Cart
     Separators.

          2.7  In addition to the GCS Credit, Exide shall receive an additional
     credit of [*****] for calendar year 2001, and a credit of [*****] per
     calendar year for 2002 through 2009 to offset any Deficit Amount otherwise
     payable by Exide under this Agreement ("Lump Sum Credits"). These Lump Sum
     Credits are nonrefundable and must be used to offset Deficit Amounts that
     accrue within the same calendar year during which the Lump Sum Credits
     accrue. They cannot be carried

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     forward nor can they be carried back to offset previous Deficit Amounts. In
     no event will these credits have any cash value. They are nonrefundable and
     result in no other cash benefit other than for use as a setoff against any
     Deficit Amount which might otherwise be payable by Exide under this
     Agreement that may have accrued during the same calendar year. If Lump Sum
     Credits are unused because there is not a resulting Deficit Amount
     sufficient to absorb the credit amount, the credit is lost.

          2.8  After application of the GCS and Lump Sum Credits, if there is a
     remaining Deficit Amount, this amount, up to a maximum of [*****], can be
     paid in arrears via an up-charge on Separator purchases in the subsequent
     Contract Year. Any Deficit Amount in excess of [*****] due after
     application of the GCS and Lump Sum Credits must be paid by Exide within
     [*****] after the close of the applicable Contract Year. Any Deficit Amount
     less than [*****], plus a [*****] installment fee, will be repaid ratably
     over Separator purchases in the next Contract Year. The actual up-charge
     will be ratably applied on the lower of: (i) Exide's actual purchases; or
     (ii) the first [*****] lineal feet of Separators purchased in the
     subsequent Contract Year. If Exide's actual purchases fall below the
     amounts necessary to fully amortize the remaining Deficit Amount plus the
     [*****] installment fee, then Exide must make whole this amount with a
     lump-sum payment within [*****] after the end of that same Contract Year in
     which payments were to be fully amortized. Upon expiration or termination
     of this Agreement, any Deficit Amounts then outstanding must be paid in
     full within [*****] after such termination or expiration. Any Deficit
     Amount payment that is not paid when due, other than amounts disputed by
     Exide in good faith, shall accrue interest at the rate of [*****] per
     month.

     c. Payment Terms. Section 5 of the Exide-NA Agreement is amended to read as
     follows:

        5.  Payment Terms

     Invoices are to be issued by Daramic upon shipment and are due and payable
     [*****] days after date of invoice. Any amounts due by Exide to Daramic,
     which amounts are not paid when due shall accrue interest at a rate of
     [*****] per month, or portion thereof, from the due date until the date
     paid. All invoices must reference applicable Exide purchase order/contract
     release numbers or the special terms of this Agreement, and shall be sent
     to:

                                Exide Corporation
                             12600 Deerfield Parkway
                              Alpharetta, GA 30004
                           Attention: Accounts Payable

     d. Research and Development. Section 7.4 of the Exide-NA Agreement is
     amended to read as follows:

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          7.4  [*****]

          8.   Miscellaneous Except as modified by this Amendment, the Exide-NA
     Agreement shall remain in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the
day and date first above mentioned.

     Exide Corporation, for itself, and on behalf of all of its present and
     future, direct and indirect, parent, subsidiary, and affiliated entities on
     a worldwide basis.

By:     [ILLEGIBLE SIGNATURE]
   -----------------------------------------

Title:
      --------------------------------------

Daramic, Inc.

By:     [ILLEGIBLE SIGNATURE]
   --------------------------------------------------

Title:
      -----------------------------------------------

                                       7<PAGE>

                                                                   EXHIBIT 10.26

Confidential materials omitted and filed separately with the Securities and
Exchange Commission pursuant to a request for confidential treatment. Asterisks
denote such omissions.

                       AMENDMENT NO. 2 TO SUPPLY CONTRACTS

     This Agreement ("Amendment No. 2") is entered into this 11th day of July,
2002 by and between Daramic, Inc. ("Daramic") and Exide Technologies (formerly
known as Exide Corporation) and all of its worldwide Affiliates ("Exide").

                                    RECITALS:

     A.   Exide and Daramic are parties to a Supply Agreement known as the North
American, Australian and New Zealand Supply Agreement for automotive separators
(the "NA Agreement"), the Automotive and Industrial Supply Agreement and the
Golf Cart Separator Supply Agreement. The NA Agreement was amended the first
time on the __ day of July, 2001 pursuant to an amendment agreement between the
parties.

     B.   Exide and Daramic now desire to further amend the terms and conditions
of the NA Agreement.

     NOW, THEREFORE, the parties agree as follows:

     1.   Delivery Terms.

     (A)  Section 8.2 of the NA Agreement is amended by deleting that section
     and substituting the following subparagraph therefor:

          Daramic will use its commercially reasonable efforts to ensure that
          all domestic, North American, Austral-Asian, and European orders,
          scheduled for pick up or delivery, will be available for pick up or
          delivered on the dates reasonably requested by Exide. Further, Daramic
          will use its commercially reasonable efforts to continue to maintain
          inventories of Exide specific products in order to meet the delivery
          schedules reasonably requested by Exide. Exide shall make required
          forecasts and shall order product in amounts reasonably consistent
          with prior ordering volumes and Exide's business requirements.
          However, in no event shall the above standards be construed to be at a
          level greater than historically practiced by Daramic on behalf of
          Exide. Further, any inventory produced by Daramic on behalf of Exide
          which is reasonably consistent with Exide's prior ordering volumes and
          Exide's forecasts will be purchased by Exide pursuant to the payment
          terms of this Agreement, should Exide discontinue the need for any
          such specific product(s) maintained in inventory by Daramic on behalf
          of Exide. Exide shall promptly notify Daramic upon Exide's
          discontinuing the need for any such specific product(s). However, in
          no event shall Exide be required to purchase any inventory maintained
          by Daramic on Exide's behalf, after such notification by Exide, in
          excess of a [*****] supply of any product type, which shall be
          determined by taking the average [*****] actual purchases by Exide
          over the previous six-month period or the average forecasts by Exide
          over the previous six-month period, whichever is greater. If Daramic
          is unable to deliver product ordered by Exide pursuant to this
          Agreement, then Daramic will provide Exide with as much notice as
          possible of its inability to do so, and Exide will have the right to
          buy the affected volumes from an alternative source. These outside
          purchases will be counted toward satisfaction of Exide's Minimum
          Purchase Requirement. The parties agree that they shall work together
          in good faith to obtain for Exide battery separators which the parties
          mutually agree to be the best available substitute for the Separators
          to be provided by Daramic pursuant to this Agreement during such
          period as Daramic is

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          unable to deliver product ordered by Exide pursuant to this Agreement.
          [*****]. Once Daramic is again capable of producing and supplying the
          required volumes on a timely basis, Exide shall resume its purchases
          from Daramic in accordance with this Agreement.

     (B)  Section 10.2 of the Automotive and Industrial Supply Agreement is
     amended by deleting the first two sentences therein and substituting the
     following subparagraph therefor:

          Daramic will use its commercially reasonable efforts to ensure that
          all domestic, North American, Austral-Asian, and European orders,
          scheduled for pick up or delivery, will be available for pick up or
          delivered on the dates reasonably requested by Exide. Further, Daramic
          will use its commercially reasonable efforts to continue to maintain
          inventories of Exide specific products in order to meet the delivery
          schedules reasonably requested by Exide. Exide shall make required
          forecasts and shall order product in amounts reasonably consistent
          with prior ordering volumes and Exide's business requirements.
          However, in no event shall the above standards be construed to be at a
          level greater than historically practiced by Daramic on behalf of
          Exide. Further, any inventory produced by Daramic on behalf of Exide
          which is reasonably consistent with Exide's prior ordering volumes and
          Exide's forecasts will be purchased by Exide pursuant to the payment
          terms of this Agreement, should Exide discontinue the need for any
          such specific product(s) maintained in inventory by Daramic on behalf
          of Exide. Exide shall promptly notify Daramic upon Exide's
          discontinuing the need for any such specific product(s). However, in
          no event shall Exide be required to purchase any inventory maintained
          by Daramic on Exide's behalf, after such notification by Exide, in
          excess of a [*****] supply of any product type, which shall be
          determined by taking the average [*****] actual purchases by Exide
          over the previous six-month period or the average forecasts by Exide
          over the previous six-month period, whichever is greater.

Also, Section 10.2 of the Automotive and Industrial Supply Agreement is further
amended by deleting the fourth sentence therein (beginning with "If Daramic is
unable....") and substituting the following therefor:

          If Daramic is unable to deliver Qualified Products ordered by Exide
          pursuant to this Agreement, then Daramic will within 24 hours provide
          Exide with notice of its inability to do so.

     (C)  Section 9.2 of the Golf Cart Separator Supply Agreement is hereby
     amended by deleting the first two sentences therein and substituting the
     following subparagraph therefor:

          Daramic will use its commercially reasonable efforts to ensure that
          all domestic, North American, Austral-Asian, and European orders,
          scheduled for pick up or delivery, will be available for pick up or
          delivered on the dates reasonably requested by Exide. Further, Daramic
          will use its commercially reasonable efforts to continue to maintain
          inventories of Exide specific products in order to meet the delivery
          schedules reasonably requested by Exide. Exide shall make required
          forecasts and shall order product in amounts reasonably consistent
          with prior ordering volumes and Exide's business requirements.
          However, in no event shall the above standards be construed to be at a
          level greater than historically practiced by

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          Daramic on behalf of Exide. Further, any inventory produced by Daramic
          on behalf of Exide which is reasonably consistent with Exide's prior
          ordering volumes and Exide's forecasts will be purchased by Exide
          pursuant to the payment terms of this Agreement, should Exide
          discontinue the need for any such specific product(s) maintained in
          inventory by Daramic on behalf of Exide. Exide shall promptly notify
          Daramic upon Exide's discontinuing the need for any such specific
          product(s). However, in no event shall Exide be required to purchase
          any inventory maintained by Daramic on Exide's behalf, after such
          notification by Exide, in excess of a [*****] supply of any product
          type, which shall be determined by taking the average [*****] actual
          purchases by Exide over the previous six-month period or the average
          forecasts by Exide over the previous six-month period, whichever is
          greater.

Also, Section 9.2 of the Golf Cart Separator Supply Agreement is further amended
by deleting the fourth sentence therein (beginning with "If Daramic is unable .
.. .") and substituting the following therefor:

          If Daramic is unable to deliver Separators ordered by Exide pursuant
          to this Agreement, then Daramic will within 24 hours provide Exide
          with notice of its inability to do so.

     2.  Lump Sum Credits.  Section 2.7 of the NA Agreement is amended as
follows: The Lump Sum Credit for calendar year 2002 shall be [*****]. The Lump
Sum Credits for each of calendar years 2003 through 2009 shall be [*****]. The
balance of Section 2.7 shall remain unchanged.

     3.  Payment Terms.  Section 5 of the NA Agreement shall be amended by
adding the following: Exide's total global worldwide credit limit for all
products purchased and other sums due to Daramic under both the NA Agreement and
any other supply relationship, including without limitation, the Golf Cart
Separator Supply Contract dated __ day of July, 2001 between Daramic and Exide
(the "Golf Cart Agreement") and the Automotive and Industrial Supply Contract
dated __ day of July 2001 by and between Daramic and Exide (the "AI Agreement"),
shall not exceed [*****] U.S. Dollars ("Credit Line Cap") during the period that
Exide is operating pursuant to and under Title 11 of the United States
Bankruptcy Code. [*****] Once Exide is no longer operating pursuant to and under
Title 11 of the United States Bankruptcy Code, the Credit Line Cap shall be
increased from [*****] U.S. Dollars to [*****] U.S. Dollars.

     [*****]

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<PAGE>

     4.  Miscellaneous. Capitalized forms used in this Amendment but not defined
herein shall have the meanings set forth in the NA Agreement, the Automotive and
Industrial Supply Agreement and the Golf Cart Separator Supply Agreement. Except
as modified by this Amendment No. 2, the NA Agreement, the Automotive and
Industrial Supply Agreement, and the Golf Cart Separator Supply Agreement shall
remain in full force and effect as modified previously.

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

EXIDE TECHNOLOGIES, for itself                       DARAMIC, INC.
and on behalf of all of its present and
future, direct and indirect, parent,                 By: [Illegible]
subsidiary, and affiliated entities on a                 --------------------
worldwide basis                                      Its: ___________________

By: [Illegible]
    ----------------------------
Its: ___________________________

                                       4

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