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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 nM3HGTtOtVx1FtfISaVkFg==

<SEC-DOCUMENT>0000891839-04-000039.txt : 20040312
<SEC-HEADER>0000891839-04-000039.hdr.sgml : 20040312
<ACCEPTANCE-DATETIME>20040312184059
ACCESSION NUMBER:		0000891839-04-000039
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040226
FILED AS OF DATE:		20040312

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CIRIN JULIUS M
		CENTRAL INDEX KEY:			0001245183

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20852
		FILM NUMBER:		04667366

	BUSINESS ADDRESS:	
		STREET 1:		2000 TECHNOLOGY PKWY
		CITY:			NEWARK
		STATE:			NY
		ZIP:			14513
		BUSINESS PHONE:		3153327100

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ULTRALIFE BATTERIES INC
		CENTRAL INDEX KEY:			0000875657
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		IRS NUMBER:				161387013
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2000 TECHNOLOGY PARKWAY
		CITY:			NEWARK
		STATE:			NY
		ZIP:			14513
		BUSINESS PHONE:		3153327100

	MAIL ADDRESS:	
		STREET 1:		2000 TECHNOLOGY PARKWAY
		CITY:			NEWARK
		STATE:			NJ
		ZIP:			14513
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2004-02-26</periodOfReport>

    <dateOfOriginalSubmission>2004-02-27</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0000875657</issuerCik>
        <issuerName>ULTRALIFE BATTERIES INC</issuerName>
        <issuerTradingSymbol>ULBI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001245183</rptOwnerCik>
            <rptOwnerName>CIRIN JULIUS M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2000 TECHNOLOGY PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEWARK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>14513</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP of Product and Industry Mkt</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>7.375</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-02-26</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4800</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2006-06-02</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock; $.10 par value</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4800</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3200</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This amendment is being filed solely to report the closing of this option in Table II.  The purchase of the underlying shares (and subsequent sale of such shares) was previously reported by Mr. Cirin in Table I of his Form 4 filed on 2/27/04.</footnote>
        <footnote id="F2">This option vests as follows:  1,600 shares on 6/2/01; 1,600 shares on 6/2/02; 1,600 shares on 6/2/03; 1,600 shares on 6/2/04; 1,600 shares on 6/2/05.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Robert W. Fishback by authority of Julius M. Cirin</signatureName>
        <signatureDate>2004-03-12</signatureDate>
    </ownerSignature>
</ownershipDocument>

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