-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 MGvb5l6slelSJGNNYZjMrbCqySYXBmWtyJC9mEOdZgORS5dLV0GOUQUOjCCDN/2t
 MARMlI5AcmRK+v1ZAVNA6Q==

<SEC-DOCUMENT>0000808064-05-000002.txt : 20050104
<SEC-HEADER>0000808064-05-000002.hdr.sgml : 20050104
<ACCEPTANCE-DATETIME>20050104121005
ACCESSION NUMBER:		0000808064-05-000002
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20041231
FILED AS OF DATE:		20050104
DATE AS OF CHANGE:		20050104

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			VELKER JOHN
		CENTRAL INDEX KEY:			0001100090

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09389
		FILM NUMBER:		05505066

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		2156192700

	MAIL ADDRESS:	
		STREET 1:		C/O C&D TECHNOLOGIES INC
		STREET 2:		1400 UNION MEETING ROAD
		CITY:			BLUE BELL
		STATE:			PA
		ZIP:			19422

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			C&D TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0000808064
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		IRS NUMBER:				133314599
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0131

	BUSINESS ADDRESS:	
		STREET 1:		1400 UNION MEETING ROAD
		STREET 2:		PO BOX 3053
		CITY:			BLUE BELL
		STATE:			PA
		ZIP:			19422
		BUSINESS PHONE:		2156192700

	MAIL ADDRESS:	
		STREET 1:		1400 UNION MEETING ROAD
		STREET 2:		PO BOX 3053
		CITY:			BLUE BELL
		STATE:			PA
		ZIP:			19422
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-12-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000808064</issuerCik>
        <issuerName>C&amp;D TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>CHP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001100090</rptOwnerCik>
            <rptOwnerName>VELKER JOHN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O C&amp;D TECHNOLOGIES INC</rptOwnerStreet1>
            <rptOwnerStreet2>1400 UNION MEETING ROAD</rptOwnerStreet2>
            <rptOwnerCity>BLUE BELL</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19422</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP Corporate Development</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-12-31</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>58</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>17.17</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2004-12-31</value>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>58</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2131</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">1-for-1</footnote>
        <footnote id="F2">Shares of Phantom Stock are payable following termination of the reporting person's employment with C&amp;D Technologies or retirement.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>John Velker</signatureName>
        <signatureDate>2005-01-04</signatureDate>
    </ownerSignature>
</ownershipDocument>

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