-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 obnQvlyNJqRvSeXz4EdWMw==

<SEC-DOCUMENT>0001181431-04-007730.txt : 20040210
<SEC-HEADER>0001181431-04-007730.hdr.sgml : 20040210
<ACCEPTANCE-DATETIME>20040210153857
ACCESSION NUMBER:		0001181431-04-007730
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030901
FILED AS OF DATE:		20040210

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MAXWELL TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0000319815
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC COMPUTERS [3571]
		IRS NUMBER:				952390133
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		8888 BALBOA AVENUE
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92123
		BUSINESS PHONE:		8582795100

	MAIL ADDRESS:	
		STREET 1:		8888 BALBOA AVENUE
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92123

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MAXWELL LABORATORIES INC /DE/
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MONTENA SA
		CENTRAL INDEX KEY:			0001177386

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15477
		FILM NUMBER:		04581877

	BUSINESS ADDRESS:	
		STREET 1:		CH. DELA CORNACKE 1
		CITY:			MATRAN
		STATE:			V8
		ZIP:			1753
		BUSINESS PHONE:		01141223105858

	MAIL ADDRESS:	
		STREET 1:		CH. DELA CURNACKE 1
		CITY:			MATRAN
		STATE:			V8
		ZIP:			1753
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>rrd32404.xml
<DESCRIPTION>FORM 4A_ FEBRUARY 10, 2004
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2003-09-01</periodOfReport>

    <dateOfOriginalSubmission>2003-12-12</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000319815</issuerCik>
        <issuerName>MAXWELL TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>MXWL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001177386</rptOwnerCik>
            <rptOwnerName>MONTENA SA</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>CH. DE LA CORNACHE 1</rptOwnerStreet1>
            <rptOwnerStreet2>CH-1753 MATRAN</rptOwnerStreet2>
            <rptOwnerCity>MATRAN, SWITZERLAND</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>SWITZERLAND</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2003-09-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>464927</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>7.38</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2582927</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>Martin Schuett, CFO</signatureName>
        <signatureDate>2004-02-10</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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