FIFTH AMENDMENT
                       TO FINANCING AND SECURITY AGREEMENT

     THIS FIFTH AMENDMENT TO FINANCING AND SECURITY AGREEMENT (this "Amendment")
is made as of this  26th day of  September,  1996,  by and among  CHARTER  POWER
SYSTEMS,  INC., a corporation organized and existing under the laws of the State
of Delaware  ("Charter Power"),  C&D CHARTER POWER SYSTEMS,  INC., a corporation
organized and existing under the laws of the State of Delaware ("C&D  Charter"),
INTERNATIONAL  POWER SYSTEMS,  INC., a corporation  organized and existing under
the laws of the State of Arizona ("International"), RATELCO ELECTRONICS, INC., a
corporation  organized  and  existing  under the laws of the  State of  Delaware
("Ratelco"),  C&D/CHARTER  HOLDINGS,  INC., a corporation organized and existing
under the laws of the State of Delaware ("Charter  Holdings"),  CHARTER POWER OF
CALIFORNIA,  a corporation organized and existing under the laws of the State of
California ("Charter California"), POWER CONVERTIBLES CORPORATION, a corporation
organized and existing  under the laws of the State of Arizona  ("PCC"),  PCC DE
MEXICO S.A. DE C.V. ("PCC  Mexico"),  POWER  CONVERTIBLES  IRELAND LIMITED ("PCC
Ireland") and LH RESEARCH,  INCORPORATED,  a corporation  organized and existing
under the laws of the State of Delaware  ("LH  Research")  (Charter  Power,  C&D
Charter,  International,  Ratelco, Charter Holdings and Charter California, PCC,
PCC Mexico, PCC Ireland and LH Research are herein  collectively  referred to as
the "Borrowers" and individually as a "Borrower"); NATIONSBANK, N.A., a national
banking association,  in its capacity as a lender  ("NationsBank"),  FLEET BANK,
NATIONAL  ASSOCIATION,  a national banking association and successor in interest
to NatWest  Bank N.A.,  being  formerly  known as National  Westminster  Bank NJ
("Fleet"),  CORESTATES BANK, N.A., a national banking association ("CoreStates")
(NationsBank,  CoreStates,  and Fleet are herein collectively referred to as the
"Lenders" and individually,  as a "Lender");  and NATIONSBANK,  N.A., a national
banking  association,  in its capacity as agent for the Lenders  (the  "Agent");
Witnesseth:

                                    RECITALS

     A. The  Lenders,  the  Borrowers  and the Agent are parties to that certain
Financing and Security Agreement dated September 26, 1994 (as amended, restated,
supplemented or otherwise modified,  the "Credit Agreement").  Under and subject
to the  provisions  of the Credit  Agreement,  the Lenders  agreed to  establish
jointly and severally in favor of the Existing  Borrowers (i) a revolving credit
facility in a maximum principal amount not to exceed SIXTY-FIVE  MILLION DOLLARS
($65,000,000) (the "Total Revolving Credit Committed Amount"),  (ii) a term loan
facility (collectively, the "Term Loans") in an original principal amount not to
exceed FIFTEEN  MILLION  DOLLARS  ($15,000,000)  (the "Total Term Loan Committed
Amount") and (iii) a letter of credit  facility as part of the Revolving  Credit
Facility (the "Letter of Credit  Facility") in a maximum principal amount not to
exceed EIGHT  MILLION  DOLLARS  ($8,000,000)  (the  "Letter of Credit  Committed
Amount").

     B. Fleet has requested that the Borrowers,  the Lenders and the Agent agree
to amend certain terms and conditions of the Credit


Agreement,  and subject to the provisions of this Amendment,  the Borrowers, the
Lenders and the Agent have so agreed;  provided, that the Lenders, the Borrowers
and the Agent execute and deliver this Amendment.

     NOW,  THEREFORE,  in  consideration  of the  premises  and  other  good and
valuable  consideration,  the  receipt  and  sufficiency  of  which  are  hereby
acknowledged, the Borrowers, the Lenders and the Agent hereby agree as follows:

     1. The  recitals  set forth  above are true and  accurate in each and every
respect and are  incorporated  herein by reference.  All capitalized  terms used
herein but not  specifically  defined herein shall have the respective  meanings
given such terms in the  Credit  Agreement,  unless  the  context  indicates  or
dictates a contrary meaning.

     2. The Credit Agreement is hereby amended as follows:

        a. Section  2.1.7 on page 38 of the Credit  Agreement is hereby  deleted
in its entirety and the following is substituted in its place:

               2.1.7  REVOLVING  CREDIT  UNUSED LINE FEE.  The  Borrowers  shall
          jointly and  severally pay to the Agent,  in arrears,  for the ratable
          benefit of the Lenders,  a quarterly  revolving credit unused line fee
          (collectively,   the   "Revolving   Credit   Unused   Line  Fees"  and
          individually, a "Revolving Credit Unused Line Fee") in an amount to be
          determined  based  upon the  ratio of Funded  Debt to  EBITDA  for the
          rolling four (4) quarter month period  covered by the then most recent
          financial  statements  furnished  or required to be  furnished  to the
          Agent  pursuant to and in the form  required by Section  6.1.1(a)  and
          Section  6.1.1(c).  Within  three  (3)  Business  Days of the  Agent's
          receipt of such financial  statements in the form required,  the Agent
          shall  calculate  the  ratio of  Funded  Debt to  EBITDA  for the then
          rolling four (4) quarter period covered by such financial  statements,
          and  shall  notify  the  Borrowers  and  the  Lenders  of the  Agent's
          determination.  If such financial  statements are not furnished as and
          when required,  the Borrowers may not be permitted to select or change
          an  Interest  Rate  or an  Interest  Period.  Following,  the  Agent's
          determination of the Funded Debt to EBITDA ratio, the Revolving Credit
          Unused  Line  Fee  shall be equal  to the per  annum  "Fee  Percentage
          Amount" as set forth below  multiplied by the  difference  between (a)
          the Total  Revolving  Credit  Committed  Amount in effect from time to
          time and (b) the sum of (i) the average  daily  outstanding  principal
          balance of the  Revolving  Loan  during the then  preceding  quarterly
          period and (ii) the average daily face amount

                                      -2-

          of all Letters of Credit outstanding during such quarterly period:

            FUNDED DEBT TO EBITDA RATIO                 FEE AMOUNT
            ---------------------------                 ----------

            Less than 1.0 to 1.0                        .125%

            Greater than or equal to                    .15%
            1.0 to 1.0, but less than
            1.75 to 1.0

            Greater than or equal to                    .18%
            1.75 to 1.0, but less than
            2.25 to 1.0

            Greater than or equal to                    .22%
            2.25 to 1.0, but less than
            2.75 to 1.0

            Greater than or equal to                    .25%
            2.75 to 1.0, but not more
            than     3.0 to 1.0

            Greater than or equal to
            3.0 to 1.0                                  .50%

          b. Section 8.11 on page 128 of the Credit  Agreement is hereby amended
     to  require  that no  amendment,  modification,  change or waiver  shall be
     effective  to increase or decrease  the amount of, or extend,  any Lender's
     Committed Amount,  without the prior written consent of all Lenders and the
     Agent.

          c.  The  Credit  Agreement  is  hereby  amended  to  require  that  no
     amendment, modification, change or waiver as to Section 6.1.14 (Net Worth),
     Section 6.1.15  (Liabilities  to Tangible Net Worth Ratio),  Section 6.1.16
     (Current  Ratio),  Section 6.1.17 (Fixed Charge  Coverage  Ratio),  Section
     6.1.18  (Funded  Debt  to  EBITDA),   Section  or  Section  6.2.7  (Capital
     Expenditures)  shall be effective without the prior consent of the Required
     Lenders and the Agent.

          d. The Credit Agreement is hereby amended to require that no waiver of
     any Event of  Default  or  Default  shall be  effective  without  the prior
     consent of the Required Lenders and the Agent.

     3. Nothing  contained herein shall be interpreted to limit any rights which
the Required Lenders already have under the Credit Agreement.

     4. The terms "this Agreement" as used in the Credit Agreement and the terms
"Credit  Agreement"  as used in any of the  Financing  Documents  shall mean the
Credit  Agreement as modified  

                                      -3-


herein unless the context clearly indicates or dictates a contrary meaning.

     5. The Borrowers and the Lenders will execute such confirmatory instruments
with respect to the Credit  Agreement  and/or any of the Financing  Documents as
the Agent may reasonably require.

     6.  This  Amendment  may not be  amended,  changed,  modified,  altered  or
terminated  without in each instance the prior written consent of the Agent, the
Lenders and the Borrowers. This Amendment shall be construed in accordance with,
and governed by, the laws of the State of Maryland.

     7. The  Borrowers  agree that  neither the  execution  and delivery of this
Amendment nor any of the terms,  provisions,  covenants, or agreements contained
in this  Amendment  shall in any  manner  release,  impair,  lessen,  waive,  or
otherwise  adversely  affect the joint and several  liability and obligations of
the Borrowers under the terms of the Credit Agreement.

     8. This  Agreement may be executed in any number of duplicate  originals or
counterparts,  each of such duplicate  originals or counterparts shall be deemed
to be an original and all taken together  shall  constitute but one and the same
instrument.

     IN WITNESS  WHEREOF,  the Borrowers,  the Agent and the Lenders have caused
this Amendment to be executed under seal as of the date first above written.

ATTEST:                             CHARTER POWER SYSTEMS, INC.


 /s/ ROBERT T. MARLEY               By:/s/ STEPHEN E. MARKERT, JR.(Seal)
Name:                               Name:
Title:   Treasurer                  Title:


ATTEST:                             C&D CHARTER POWER SYSTEMS, INC.


 /s/ ROBERT T. MARLEY               By:/s/ STEPHEN E. MARKERT, JR.(Seal)
Name:                               Name:
Title:   Treasurer                  Title:  V. Pres.


ATTEST:                             INTERNATIONAL POWER SYSTEMS, INC.


 /s/ ROBERT T. MARLEY               By:/s/ STEPHEN E. MARKERT, JR.(Seal)
Name:                               Name:
Title:   Treasurer                  Title: V. Pres.

                                      -4-

ATTEST:                             RATELCO ELECTRONICS, INC.


 /s/ ROBERT T. MARLEY               By:/s/ STEPHEN E. MARKERT, JR.(Seal)
Name:                               Name:
Title:   Treasurer                  Title: V. Pres


ATTEST:                             C&D/CHARTER HOLDINGS, INC.


/s/ STEPHEN E. MARKERT, JR.         By: /s/ ROBERT T. MARLEY     (Seal)
Name:                               Name:
Title: Director                     Title: Vice President


ATTEST:                             CHARTER POWER OF CALIFORNIA


 /s/ ROBERT T. MARLEY               By:/s/ STEPHEN E. MARKERT, JR.(Seal)
Name:                               Name:
Title:   Treasurer                  Title: V. Pres


ATTEST:                             POWER CONVERTIBLES CORPORATION


 /s/ ROBERT T. MARLEY               By:/s/ STEPHEN E. MARKERT, JR.(Seal)
Name:                               Name:
Title:                              Title:  Treasurer


ATTEST:                             PCC DE MEXICO S.A. DE C.V.


 /s/ ROBERT T. MARLEY               By:/s/ STEPHEN E. MARKERT, JR.(Seal)
Name:                               Name:
Title:                              Title:


ATTEST:                             POWER CONVERTIBLES IRELAND LIMITED


 /s/ ROBERT T. MARLEY               By:/s/ STEPHEN E. MARKERT, JR.(Seal)
Name:                               Name:
Title:                              Title:


ATTEST:                             LH RESEARCH, INCORPORATED


 /s/ ROBERT T. MARLEY               By:/s/ STEPHEN E. MARKERT, JR.(Seal)
Name:                               Name:
Title:   Treasurer                  Title:  V. Pres
                                      -5-


WITNESS:                            NATIONSBANK, N.A.
                                    in its capacity as Agent


 /s/ DEBORAH LLOYD                  By: /s/PATRICK M. MOORE      (Seal)
                                    Name:  Patrick M. Moore
                                    Title: Vice President


WITNESS:                            NATIONSBANK, N.A.
                                    in its capacity as a Lender


 /s/ DEBORAH LLOYD                  By: /s/ PATRICK M. MOORE     (Seal)
                                    Name:  Patrick M. Moore
                                    Title: Vice President


WITNESS:                            CORESTATES BANK, N.A.
                                    in its capacity as a Lender


 /s/ EDMUND GREEN                   By: /s/ KARL F. SCHULTZ      (Seal)
     A.V.P.                         Name:Karl F. Schultz
                                    Title:Vice President


WITNESS:                            FLEET BANK, NATIONAL ASSOCIATION
                                    (formerly known as NatWest Bank
                                    N.A.) in its capacity as a Lender


_________________________           By: /s/ GARY P. KEARNS       (Seal)
                                    Name:  Gary P. Kearns
                                    Title: SVP

                                      -6-