Document:

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                                                                 Exhibit 10.34.1
                                                                 ---------------

                                 PROMISSORY NOTE

  $354,979                                                         New York, NY
                                                                 January 3, 1998

FOR VALUE RECEIVED, Yehuda Harats hereby promises to pay to the order of
Electric Fuel Corporation (EFC) with its principal place of business at 885
Third Avenue, New York, New York, the principal sum of Three Hundred and Fifty
Four Thousand Nine Hundred and Seventy Nine Dollars, on December 31, 2007.

Yehuda Harats further promises to pay to EFC interest on the outstanding
principal sum as follows:

Interest will accrue on the loan until maturity and will be calculated at the
higher of:

1.   1%, over the Federal Fund Rate of 5.5% compounded on December 31, 1998 and
     thereafter on an annual calendar year basis (using a 365 day year).

                                       OR

2.   The percentage increase in the Israeli consumer price index between the
     date of the loan and the date of the annual interest calculation,
     calculated in New Israeli Shekels based on the original shekel amount of
     the loan NIS 1,259,465.

          The calculation under this option will at every annual accrual date be
          executed by taking the original NIS amount multiplied by the CPI
          increase to date and divided by the current exchange rate.

This Note is secured by a pledge to EFC of 719,000 shares of EFC.

At any given calculation date, the interest for the current period will be
charged by taking the higher of the two ending balances (principal and interest)
less the previously calculated balances.

This Note shall be deemed to have been made under and shall in all respects be
governed by the internal laws of the State of Delaware without reference to
conflicts of laws.

IN WITNESS WHEREOF, this Note has been duly executed and delivered by

   /s/  Yehuda Harats
------------------------<PAGE>

                                                                 Exhibit 10.34.2
                                                                 ---------------

               AMENDMENT TO PROMISSORY NOTE DATED JANUARY 3, 1998

                                                                    New York, NY
                                                                   April 1, 1998

The Promissory Note dated January 3, 1998 between Yehuda Harats and Electric
Fuel Corporation (EFC) is hereby amended as follows:

Mr. Harats will bear no personal liability on the principal and accrued interest
of this Note, unless he is Terminated by EFC for Cause, as defined in Section
6(c) of the Amended and Restated Employment Agreement ("Employment Agreement"),
dated October 1, 1996.

The Company will have recourse only to Compensation due Mr. Harats upon
Termination as per Section 7(b) of the Employment Agreement, and excludes the
release of Mr. Harats' Manager's Insurance and Education Fund as per Sections
4(a) and 4(b) of the Employment Agreement.

All stock pledged to the Company under this Promissory Note is hereby released.

This Note shall be deemed to have been made under and shall in all respects be
governed by the internal laws of the State of Delaware without reference to
conflicts of laws.

IN WITNESS WHEREOF, this Note has been duly executed and delivered by

    /s/   Yehuda Harats
 ----------------------

AGREED AND APPROVED

    /s/   Robert Ehrlich
 -----------------------
Robert Ehrlich, Chairman of the Board
Electric Fuel Corporation<PAGE>

                                                                 Exhibit 10.35.1
                                                                 ---------------

                                 PROMISSORY NOTE

$206,805                                                           New York, NY
                                                                 January 3, 1998

FOR VALUE RECEIVED, Robert Ehrlich hereby promises to pay to the order of
Electric Fuel Corporation (EFC) with its principal place of business at 885
Third Avenue, New York, New York, the principal sum of Two Hundred and Six
Thousand Eight Hundred and Five Dollars, on December 31, 2007.

Robert Ehrlich further promises to pay to EFC interest on the outstanding
principal sum as follows:

Interest will accrue on the loan until maturity and will be calculated at the
higher of:

1.   1%, over the Federal Fund Rate of 5.5% compounded on December 31, 1998 and
     thereafter on an annual calendar year basis (using a 365 day year).

                                       OR

2.   The percentage increase in the Israeli consumer price index between the
     date of the loan and the date of the annual interest calculation,
     calculated in New Israeli Shekels based on the original shekel amount of
     the loan NIS 733,744.

          The calculation under this option will at every annual accrual date be
          executed by taking the original NIS amount multiplied by the CPI
          increase to date and divided by the current exchange rate.

At any given calculation date, the interest for the current period will be
charged by taking the higher of the two ending balances (principal and interest)
less the previously calculated balances.

This Note is secured by a pledge to EFC of the shares of EFC acquired with the
promissory note dated January 3, 1993.

This Note shall be deemed to have been made under and shall in all respects be
governed by the internal laws of the Sate of Delaware without reference to
conflicts of laws.

IN WITNESS WHEREOF, this Note has been duly executed and delivered by

    /s/   Robert Ehrlich
 ---------------------------<PAGE>

                                                                 Exhibit 10.35.2
                                                                 ---------------

               AMENDMENT TO PROMISSORY NOTE DATED JANUARY 3, 1998

                                                                    New York, NY
                                                                   April 1, 1998

The Promissory Note dated January 3, 1998 between Robert S. Ehrlich and Electric
Fuel Corporation (EFC) is hereby amended as follows:

Mr. Ehrlich will bear no personal liability on the principal and accrued
interest of this note, unless he is Terminated by EFC for Cause, as defined in
Section 6(c) of the Amended and Restated Employment Agreement ("Employment
Agreement"), dated October 1, 1996.

The Company will have recourse only to Compensation due Mr. Ehrlich upon
Termination as per Section 7(b) of the Employment Agreement, and excludes the
release of Mr. Ehrlich's Manager's Insurance and Education Fund as per Sections
4(a) and 4(b) of the Employment Agreement.

All stock pledged to the Company under this Promissory Note is hereby released.

This Note shall be deemed to have been made under and shall in all respects be
governed by the internal laws of the State of Delaware without reference to
conflicts of laws.

IN WITNESS WHEREOF, this Note has been duly executed and delivered by

    /s/   Robert Ehrlich
 --------------------------

AGREED AND APPROVED

    /s/   Yehuda Harats
 -------------------------
Yehuda Harats
President and CEO<PAGE>

                                                                   Exhibit 10.36
                                                                   -------------

                                 PROMISSORY NOTE
                                 ---------------

                                December 3, 1999

     FOR VALUE RECEIVED, the undersigned ("Maker") hereby promises to pay to the
order of Electric Fuel Corporation, a Delaware corporation ("EFC"), ten years
from the date of this note, the principal sum of One Hundred Sixty-Seven
Thousand and Nine Hundred Seventy-Five dollars (U.S. $167,975), together with
simple interest from the date hereof on the principal amount from time to time
unpaid at a per annum rate equal to the federal funds rate announced by the Wall
Street Journal on the last business day preceding the date of the note, plus 1%
until the principal sum is paid in full. The Maker will pay such interest semi-
annually until the principal has been paid in full, except that all accrued but
unpaid interest shall be due and payable at the stated or accelerated maturity
hereof. This note may be prepaid in whole or in part at any time, without
premium, penalty or prior notice.

     In the event that (a) the Maker fails to make any payment of interest on
this note as provided herein and such failure continues for a period of 30 days
or (b) the Maker files or has filed against the Maker any petition under any
bankruptcy or insolvency law or for the appointment of a receiver or makes a
general assignment for the benefit of creditors, then the entire unpaid
principal of this note, together with accrued interest thereon, shall
automatically become immediately due and payable. No failure by the holder to
take action with respect to any default hereunder shall affect its subsequent
rights to take action with respect to the same or any other default. In the
event of default the Maker agrees to pay all reasonable costs of collection,
including reasonable attorneys' fees, to the extent allowed by law.

     This note is secured by a pledge to EFC of the 125,000 shares of EFC's
common stock, par value $.01 per share (the "Common Stock"), acquired with this
note, plus an additional 125,000 shares of Common Stock previously acquired by
the Maker (the "Pledged Shares"). The recourse under this note shall only be to
the Pledged Shares.

     To perfect EFC's security interest in the Pledged Shares, the Maker shall
deliver to EFC the stock certificate or certificates representing the Pledged
Shares, together with stock powers duly endorsed in blank. EFC shall release its
security interest in the Pledged Shares when all principal and interest owed
hereunder have been paid in full.

     The Maker hereby waives presentment, demand, notice of nonpayment, protest
and all other demands, notices and defenses (other than payment) in connection
with the delivery, acceptance, performance and enforcement of this note.

     This note shall be governed by and construed in accordance with the laws
(other than the conflict of law rules) of the State of New York.

     IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of
December, 1999.

                                    /s/ Yehuda Harats
                                    -----------------------
                                    Yehuda Harats

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