<SEC-DOCUMENT>0001209191-18-053213.txt : 20181002
<SEC-HEADER>0001209191-18-053213.hdr.sgml : 20181002
<ACCEPTANCE-DATETIME>20181002164010
ACCESSION NUMBER:		0001209191-18-053213
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180928
FILED AS OF DATE:		20181002
DATE AS OF CHANGE:		20181002

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Vargo Ronald P
		CENTRAL INDEX KEY:			0001355666

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32253
		FILM NUMBER:		181101896

	MAIL ADDRESS:	
		STREET 1:		41 UNIVERSITY DRIVE, SUITE 202
		CITY:			NEWTOWN
		STATE:			PA
		ZIP:			18940

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EnerSys
		CENTRAL INDEX KEY:			0001289308
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-ELECTRICAL APPARATUS & EQUIPMENT, WIRING SUPPLIES [5063]
		IRS NUMBER:				233058564
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		2366 BERNVILLE ROAD
		CITY:			READING
		STATE:			PA
		ZIP:			19605
		BUSINESS PHONE:		(610) 208-1600

	MAIL ADDRESS:	
		STREET 1:		2366 BERNVILLE ROAD
		CITY:			READING
		STATE:			PA
		ZIP:			19605
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4 SUBMISSION
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        <issuerCik>0001289308</issuerCik>
        <issuerName>EnerSys</issuerName>
        <issuerTradingSymbol>ENS</issuerTradingSymbol>
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            <rptOwnerName>Vargo Ronald P</rptOwnerName>
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            <rptOwnerStreet1>C/O ENERSYS</rptOwnerStreet1>
            <rptOwnerStreet2>2366 BERNVILLE ROAD</rptOwnerStreet2>
            <rptOwnerCity>READING</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19605</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
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                <value></value>
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                    <value>0.1027</value>
                    <footnoteId id="F5"/>
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                    <value>A</value>
                </transactionAcquiredDisposedCode>
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                    <value>7215.6704</value>
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                </directOrIndirectOwnership>
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                <transactionFormType>4</transactionFormType>
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                <value></value>
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                <transactionShares>
                    <value>0.1205</value>
                    <footnoteId id="F6"/>
                </transactionShares>
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                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>7215.7909</value>
                </sharesOwnedFollowingTransaction>
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    <footnotes>
        <footnote id="F1">These shares were granted in the form of Deferred Stock Units (&quot;DSUs&quot;), in connection with the cash dividend paid on September 28, 2018 to stockholders of record as of September 14, 2018 (the &quot;Dividend&quot;), with respect to 5,836 vested DSUs granted to the reporting person on various dates, and adjusted for previously declared and paid cash dividends.  These DSUs are vested and payable concurrent with the underlying DSUs.</footnote>
        <footnote id="F2">These shares were granted in the form of Restricted Stock Units (&quot;RSUs&quot;), in connection with the Dividend, with respect to 1,187.9579 vested RSUs granted to the reporting person on various dates under the EnerSys Deferred Compensation Plan for Non-Employee Directors (the &quot;Plan&quot;), and adjusted for previously declared and paid cash dividends. These RSUs are vested and payable concurrent with the underlying RSUs.</footnote>
        <footnote id="F3">These shares were granted in the form of RSUs, in connection with the Dividend, with respect to 9.0666 unvested RSUs granted to the reporting person on October 10, 2017, under the Plan. These RSUs are vested and payable concurrent with the underlying RSUs.</footnote>
        <footnote id="F4">These shares were granted in the form of RSUs, in connection with the Dividend, with respect to 28.1365 unvested RSUs granted to the reporting person on January 16, 2018, under the Plan. These RSUs are vested and payable concurrent with the underlying RSUs.</footnote>
        <footnote id="F5">These shares were granted in the form of RSUs, in connection with the Dividend, with respect to 51.1196 unvested RSUs granted to the reporting person on April 10, 2018, under the Plan. These RSUs are vested and payable concurrent with the underlying RSUs.</footnote>
        <footnote id="F6">These shares were granted in the form of RSUs, in connection with the Dividend, with respect to 60 unvested RSUs granted to the reporting person on July 18, 2018, under the Plan. These RSUs are vested and payable concurrent with the underlying RSUs.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Karen J. Yodis, by Power of Attorney</signatureName>
        <signatureDate>2018-10-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
