<PAGE>

                                                                   EXHIBIT 10.18

THE WARRANTS REPRESENTED BY THIS CERTIFICATE AND THE SECURITIES ISSUABLE UPON
EXERCISE THEREOF HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED (THE "ACT"), AND MAY NOT BE OFFERED OR SOLD EXCEPT (i) PURSUANT TO AN
EFFECTIVE REGISTRATION STATEMENT UNDER THE ACT, (ii) TO THE EXTENT APPLICABLE,
PURSUANT TO RULE 144 UNDER SUCH ACT (OR ANY SIMILAR RULE UNDER SUCH ACT RELATING
TO THE DISPOSITION OF SECURITIES), OR (iii) UPON THE DELIVERY BY THE HOLDER TO
THE COMPANY OF AN OPINION OF COUNSEL, REASONABLY SATISFACTORY TO COUNSEL FOR THE
COMPANY, STATING THAT AN EXEMPTION FROM REGISTRATION UNDER SUCH ACT IS
AVAILABLE.

                        EXERCISABLE UNTIL ON OR BEFORE
                   5:00 P.M., NEW YORK TIME, August 30, 2006



No.  G-1                                                        Warrants _______

                            CASH TECHNOLOGIES, INC.


                          SERIES G REDEEMABLE WARRANT

          This warrant certificate (the "Warrant Certificate") certifies that
___________________ or registered assigns, are the registered holders (the
"Holders") of Series G Redeemable Warrants to purchase, at any time until 5:00
P.M. New York City time on August 30, 2006 (the "Expiration Date"), up to
100,000 fully-paid and non-assessable shares, subject to adjustment in
accordance with Article 6 hereof (the "Warrant Shares"), of the common stock,
par value $.001 per share (the "Common Stock"), of Cash Technologies, Inc., a
Delaware corporation (the "Company"), subject to the terms and conditions set
forth herein.  The warrants represented by this Warrant Certificate and any
warrants resulting from a transfer or subdivision of the warrants represented by
this Warrant Certificate shall sometimes hereinafter be referred to,
individually, as a "Warrant" and, collectively, as the "Warrants."  This Warrant
Certificate is one of a series of Warrant Certificates being issued as part of a
private offering (the "Series F Preferred Private Financing") pursuant to the
Securities Purchase Agreement dated as of August 29, 2001 providing for the sale
of up to 5 shares of Series F Preferred Stock and 100,000 Series G Warrants
between the Company and the Holder.

          1.  Exercise of Warrants.  Each Warrant is initially exercisable to
              --------------------
purchase one Warrant Share at an initial exercise price of 125% of the average
of the closing bid prices of the Company's Common Stock for the twenty (20)
trading days immediately preceding the Closing Date, as that term is defined in
the Securities Purchase Agreement entered into between the
<PAGE>

Holders and the Company, per Warrant Share; provided that in no event shall the
exercise price be greater than $2.00 per share, subject to adjustment as set
forth in Article 6 hereof, payable in cash or by check to the order of the
Company, or any combination of cash or check. Upon surrender of this Warrant
Certificate with the annexed Form of Election to Purchase duly executed,
together with payment of the Exercise Price (as hereinafter defined) for the
Warrant Shares purchased, at the Company's principal offices (presently located
at 1434 West 11th Street, Los Angeles, California 90015), the registered holder
of the Warrant Certificate (the "Holder" or "Holders") shall be entitled to
receive a certificate or certificates for the Warrant Shares so purchased. The
purchase rights represented by this Warrant Certificate are exercisable at the
option of the Holder hereof, in whole or in part (but not as to fractional
shares). In the case of the purchase of less than all the Warrant Shares
purchasable under this Warrant Certificate, the Company shall cancel this
Warrant Certificate upon its surrender and shall execute and deliver a new
Warrant Certificate of like tenor for the balance of the Warrant Shares
purchasable hereunder.

          2.  Issuance of Certificates.  Upon the exercise of the Warrants, the
              ------------------------
issuance of certificates for the Warrant Shares purchased pursuant to such
exercise shall be made forthwith without charge to the Holder thereof including,
without limitation, any tax which may be payable in respect of the issuance
thereof, and such certificates shall (subject to the provisions of Article 3
hereof) be issued in the name of, or in such names as may be directed by, the
Holder thereof; provided, however, that the Company shall not be required to pay
any tax which may be payable in respect of any transfer involved in the issuance
and delivery of any such certificates in a name other than that of the Holder
and the Company shall not b e required to issue or deliver such certificates
unless or until the person or persons requesting the issuance thereof shall have
paid to the Company the amount of such tax or shall have established to the
satisfaction of the Company that such tax has been paid.

              The Warrant Certificates and, upon exercise of the Warrants, the
certificates representing the Warrant Shares shall be executed on behalf of the
Company by the manual or facsimile signature of those officers required to sign
such certificates under applicable law.

              This Warrant Certificate and, upon exercise of the Warrants, in
part or in whole, certificates representing the Warrant Shares shall bear a
legend substantially similar to the following:

              "The securities represented by this certificate have not been
registered under the Securities Act of 1933, as amended ("Act"), and may not be
offered or sold except (i) pursuant to an effective registration statement under
the Act,  (ii) to the extent applicable, pursuant to Rule 144 under the Act (or
any similar rule under such Act relating to the disposition of securities), or
(iii) upon the delivery by the holder to the Company of an opinion of counsel,
reasonably satisfactory to counsel to the issuer, stating that an exemption from
registration under such Act is available."
<PAGE>

          3.  Restriction on Transfer of Warrants.  The Holder of this Warrant
              -----------------------------------
Certificate, by its acceptance thereof, represents and warrants to, and
covenants and agrees with the Company that the Warrants and the Warrant Shares
issuable upon exercise of the Warrants are being acquired for the Holder's own
account as an investment and not with a view to the resale or distribution
thereof and that the Warrants and the Warrant Shares are not registered under
the Act or any state securities or blue sky laws and, therefore, may not be
transferred unless such securities are either registered under the Act and any
applicable state securities law or an exemption from such registration is
available. The Holder of this Warrant Certificate acknowledges that the Holder
is an "accredited investor" within the meaning of Regulation D promulgated under
the Act who has been provided with an opportunity to ask questions of
representatives of the Company concerning the Company and that all such
questions were answered to the satisfaction of the Holder. In connection with
any purchase of Warrant Shares the Holder agrees to execute any documents which
may be reasonably required by counsel to the Company to comply with the
provisions of the Act and applicable state securities laws.

          4.  Registration Rights.  The Holder shall be entitled to all of the
              -------------------
rights and subject to all of the obligations set forth in the Registration
Rights Agreement of the Company, dated as of the initial closing date for the
Series F Preferred Private Financing.

          5.  Price
              -----

              5.1  Initial and Adjusted Exercise Price.  The initial exercise
                   -----------------------------------
price of each Warrant shall be 125% of the average of the closing bid prices of
the Company's Common Stock for the twenty (20) trading days immediately
preceding the Closing Date, as that term is defined in the Securities Purchase
Agreement entered into between the Holders and the Company, per Warrant Share;
provided that in no event shall the exercise price exceed $2.00 per share. The
adjusted exercise price shall be the price which shall result from time to time
from any and all adjustments of the initial exercise price in accordance with
the provisions of Article 7 hereof.

              5.2  Exercise Price.  The term "Exercise Price" herein shall mean
                   --------------
the initial exercise price or the adjusted exercise price, depending upon the
context.

          6.  Adjustments of Exercise Price and Number of Warrant Shares.
              ----------------------------------------------------------

              6.1  Dividends and Distributions.  In case the Company shall at
                   ---------------------------
any time after the date hereof pay a dividend in shares of Common Stock or make
a distribution in shares of Common Stock, then upon such dividend or
distribution, the Exercise Price in effect immediately prior to such dividend or
distribution shall be reduced to a price determined by dividing an amount equal
to the total number of shares of Common Stock outstanding immediately prior to
such dividend or distribution multiplied by the Exercise Price in effect
immediately prior to such dividend or distribution, by the total number of
shares of Common Stock outstanding immediately after such dividend or
distribution. For purposes of any computation to be made in accordance with the
provisions of this Section 6.1, the Common Stock issuable by way of dividend or
distribution shall be deemed to have been issued
<PAGE>

immediately after the opening of business on the date following the date fixed
for determination of shareholders entitled to receive such dividend or
distribution.

          6.2  Subdivision and Combination.  In case the Company shall at any
               ---------------------------
time subdivide or combine the outstanding Common Stock, the Exercise Price shall
forthwith be proportionately decreased in the case of subdivision or increased
in the case of combination.

          6.3  Adjustment in Number of Warrant Shares. Upon each adjustment of
               --------------------------------------
the Exercise Price pursuant to the provisions of this Article 7, the number of
Warrant Shares issuable upon the exercise of each Warrant shall be adjusted to
the nearest full shares of Common Stock by multiplying a number equal to the
Exercise Price in effect immediately prior to such adjustment by the number of
Warrant Shares issuable upon exercise of the Warrants immediately prior to such
adjustment and dividing the product so obtained by the adjusted Exercise Price.

          6.4  Reclassification, Consolidation, Merger, etc.  In case of any
               --------------------------------------------
reclassification or change of the outstanding shares of Common Stock (other than
a change in par value, or from par value to no par value, or from no par value
to par value, or as a result of a subdivision or combination), or in the case of
any consolidation of the Company with, or merger of the Company into, another
corporation (other than a consolidation or merger in which the Company is the
surviving corporation and which does not result in any reclassification or
change of the outstanding shares of Common Stock, except a change as a result of
a subdivision or combination of such shares or a change in nominal value, as
aforesaid), or in the case of a sale or conveyance to another corporation of the
property of the Company as an entirety, the Holder shall thereafter have the
right to purchase the kind and number of shares of stock and other securities
and property receivable upon such reclassification, change, consolidation,
merger, sale or conveyance as if the Holder were the owner of the Warrant Shares
issuable upon exercise of the Warrants immediately prior to any such events at a
price equal to the product of (x) the number of Warrant Shares issuable upon
exercise of the Warrants and (y) the Exercise Price in effect immediately prior
to the record date for such reclassification, change, consolidation, merger,
sale or conveyance as if such Holder had exercised the Warrants.

          6.5  Determination of Outstanding Shares.  The number of shares of
               -----------------------------------
Common Stock at any one time outstanding shall include the aggregate number of
shares issued or issuable upon the exercise of outstanding options, rights,
warrants and upon the conversion or exchange of outstanding convertible or
exchangeable securities.

     7.   Exchange and Replacement of Warrant Certificates.  This Warrant
          ------------------------------------------------
Certificate is exchangeable without expense, upon the surrender hereof by the
registered Holder at the principal executive office of the Company, for a new
Warrant Certificate of like tenor and date representing in the aggregate the
right to purchase the same number of Warrant Shares in such denominations as
shall be designated by the Holder thereof at the time of such surrender.

          Upon receipt by the Company of evidence reasonably satisfactory to it
of the loss, theft, destruction or mutilation of this Warrant Certificate, and,
in case of loss, theft or destruction, of indemnity or security reasonably
satisfactory to it, and reimbursement to the
<PAGE>

Company of all reasonable expenses incidental thereto, and upon surrender and
cancellation of the Warrants, if mutilated, the Company will make and deliver a
new Warrant of like tenor, in lieu thereof.

     8.   Elimination of Fractional Interests. The Company shall not be required
          -----------------------------------
to issue certificates representing fractions of shares of Common Stock and shall
not be required to issue scrip or pay cash in lieu of fractional interests, it
being the intent of the parties that all fractional interests shall be
eliminated by rounding any fraction up to the nearest whole number of shares of
Common Stock.

     9.   Reservation of Shares. The Company covenants and agrees that it will
          ---------------------
at all times reserve and keep available out of its authorized share capital,
solely for the purpose of issuance upon the exercise of the Warrants, such
number of shares of Common Stock as shall be equal to the number of Warrant
Shares issuable upon the exercise of the Warrants, for issuance upon such
exercise, and that, upon exercise of the Warrants and payment of the Exercise
Price therefor, all Warrant Shares issuable upon such exercise shall be duly and
validly issued, fully paid, nonassessable and not subject to the preemptive
rights of any shareholder.

     10.  Notices to Warrant Holders. Nothing contained in this Agreement shall
          --------------------------
be construed as conferring upon the Holder or Holders the right to vote or to
consent or to receive notice as a stockholder in respect of any meetings of
stockholders for the election of directors or any other matter, or as having any
rights whatsoever as a shareholder of the Company. If, however, at any time
prior to the expiration of the Warrants and their exercise, any of the following
events shall occur:

     (a)  the Company shall take a record of the holders of its Common Stock for
the purpose of entitling them to receive a dividend or distribution payable
otherwise than in cash, or a cash dividend or distribution payable otherwise
then out of current or retained earnings, as indicated by the accounting
treatment of such dividend or distribution on the books of the Company; or

     (b)  the Company shall offer to all the holders of its Common Stock any
additional shares of Common Stock or other shares of capital stock of the
Company or securities convertible into or exchangeable for shares of Common
Stock or other shares of capital stock of the Company, or any option, right or
warrant to subscribe therefor;

     (c)  a dissolution, liquidation or winding up of the Company (other than in
connection with a consolidation or merger) or a sale of all or substantially all
of its property, assets and business as an entirety shall be proposed; or

     (d)  the Company or an affiliate of the Company shall propose to issue any
rights to subscribe for shares of Common Stock or any other securities of the
Company or of such affiliate to all the stockholders of the Company;
<PAGE>

then, in any one or more of said events, the Company shall give written notice
of such event at least twenty (20) days prior to the date fixed as a record date
or the date of closing the transfer books for the determination of the
stockholders entitled to such dividend, distribution, convertible or
exchangeable securities or subscription rights, options or warrants, or entitled
to vote on such proposed dissolution, liquidation, winding up or sale.  Such
notice shall specify such record date or the date of closing the transfer books,
as the case may be.  Failure to give such notice or any defect therein shall not
affect the validity of any action taken in connection with the declaration or
payment of any such dividend or distribution, or the issuance of any convertible
or exchangeable securities or subscription rights, options or warrants, or any
proposed dissolution, liquidation, winding up or sale.

          Notwithstanding the foregoing, the Company agrees that it shall
promptly deliver to the Holder copies of all financial statements, reports and
proxy statements which the Company is required to send to its stockholders
generally.

     11.  Notices. All notices, requests, consents and other communications
          -------
hereunder shall be in writing and shall be deemed to have been duly made when
delivered, or mailed by registered or certified mail, return receipt requested:

     (a)  If to a registered Holder of the Warrants, to the address of such
Holder as shown on the books of the Company; or

     (b)  If to the Company, to the address set forth in Article 1 of this
Agreement or to such other address as the Company may designate by notice to the
Holders.

     12.  Successors. All the covenants and provisions of this Agreement by or
          ----------
for the benefit of the Company and the Holders inure to the benefit of their
respective successors and assigns hereunder.

     13.  Governing Law.
          -------------

          13.1  Choice of Law. This Agreement shall be deemed to have been made
                -------------
and delivered in the State of Delaware and shall be governed as to validity,
interpretation, construction, effect and in all other respects by the internal
laws of the State of Delaware.

          13.2  Jurisdiction and Service of Process. The Company and the Holder
                -----------------------------------
each (a) agrees that any legal suit, action or proceeding arising out of or
relating to this Warrant Certificate, or any other agreement entered into
between the Company and the Holder pursuant to the Series F Preferred Private
Financing shall be instituted exclusively in the Supreme Court of New York, New
York, New York, or in the United States District Court for the Southern District
of New York, New York (b) waives any objection which the Company or such Holder
may have now or hereafter based upon forum non conveniens or to the venue of any
such suit, action or proceeding, and (c) irrevocably consents to the
jurisdiction of the Supreme Court of New York, New York, New York, or in the
United States District Court for the Southern District
<PAGE>

of New York, New York in any such suit, action or proceeding. The Company and
the Holder each further agrees (a) to accept and acknowledge service of any and
all process which may be served in any such suit, action or proceeding in the
Supreme Court of New York, New York, New York, or in the United States District
Court for the Southern District of New York, New York and (b) agrees that
service of process upon the Company or the Holder mailed by certified mail to
their respective addresses shall be deemed in every respect effective service of
process upon the Company or the Holder, as the case may be, in any suit, action
or proceeding. FURTHER, BOTH THE COMPANY AND HOLDER HEREBY WAIVE TRIAL BY JURY
IN ANY ACTION TO ENFORCE THE TERMS OF THIS WARRANT CERTIFICATE AND IN CONNECTION
WITH ANY DEFENSE, COUNTERCLAIM OR CROSS-CLAIM ASSERTED IN ANY SUCH ACTION.

          IN WITNESS WHEREOF, the Company has caused this Warrant to be duly
executed, as of the 30th day of August, 2001.

                                             CASH TECHNOLOGIES, INC.


                                             By: _______________________________
                                                  Name:  Edmund King
                                                  Title: Chief Financial Officer
<PAGE>

                        [FORM OF ELECTION TO PURCHASE]


          The undersigned hereby irrevocably elects to exercise the right,
represented by this Warrant Certificate, to purchase ________ Warrant Shares and
herewith tenders in payment for such Warrant Shares cash or a certified check
payable to the order of Cash Technologies, Inc. in the amount of $_________, all
in accordance with the terms hereof.  The undersigned requests that a
certificate for such Warrant Shares be registered in the name of
___________________________________________, whose address is
_________________________________________________________________, and that
such certificate be delivered to ___________________, whose address is
_______________________________________________.


Dated: ______________              Signature:

                                                               (Signature
                                   must conform in all respects to name of
                                   holder as specified on the face of the
                                   Warrant Certificate.)


                       _________________________________

                       _________________________________
                       (Insert Social Security or Other
                         Identifying Number of Holder)