<SEC-DOCUMENT>0001209191-19-062273.txt : 20191231
<SEC-HEADER>0001209191-19-062273.hdr.sgml : 20191231
<ACCEPTANCE-DATETIME>20191231162850
ACCESSION NUMBER:		0001209191-19-062273
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20191227
FILED AS OF DATE:		20191231
DATE AS OF CHANGE:		20191231

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Schmidtlein Michael J
		CENTRAL INDEX KEY:			0001345053

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32253
		FILM NUMBER:		191319753

	MAIL ADDRESS:	
		STREET 1:		2366 BERNVILLE ROAD
		CITY:			READING
		STATE:			PA
		ZIP:			19605

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
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
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        <issuerCik>0001289308</issuerCik>
        <issuerName>EnerSys</issuerName>
        <issuerTradingSymbol>ENS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
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            <rptOwnerName>Schmidtlein Michael J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2366 BERNVILLE ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>READING</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19605</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Executive Vice President &amp; CFO</officerTitle>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>7.922</value>
                    <footnoteId id="F5"/>
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                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>98880.2765</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
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            <transactionDate>
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                <value></value>
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                <transactionShares>
                    <value>9.2095</value>
                    <footnoteId id="F6"/>
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                <transactionPricePerShare>
                    <value>0.00</value>
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                <sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2019-12-27</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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                <transactionFormType>4</transactionFormType>
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                <value></value>
            </transactionTimeliness>
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                <transactionShares>
                    <value>11.5967</value>
                    <footnoteId id="F7"/>
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                <sharesOwnedFollowingTransaction>
                    <value>98901.0827</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        <nonDerivativeTransaction>
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                <value>Common Stock</value>
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                <value>2019-12-27</value>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>13.6167</value>
                    <footnoteId id="F8"/>
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                    <value>0.00</value>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
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                <sharesOwnedFollowingTransaction>
                    <value>98914.6994</value>
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    <footnotes>
        <footnote id="F1">These shares were granted in the form of Performance Share Units (&quot;PSUs&quot;), in connection with the cash dividend paid on December 27, 2019 to stockholders of record as of December 13, 2019 (the &quot;Dividend&quot;), with respect to 9,326 PSUs granted to the reporting person on May 16, 2016, and adjusted for vesting on May 16, 2019 and previously declared and paid cash dividends. These PSUs will be payable concurrently with the underlying PSUs.</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 1,432 unvested RSUs granted to the reporting person on May 16, 2016, and adjusted for previously declared and paid cash dividends. These RSUs will vest and are 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 1,984 unvested RSUs granted to the reporting person on May 9, 2017, and adjusted for previously declared and paid cash dividends. These RSUs will vest and are payable concurrent with the underlying RSUs.</footnote>
        <footnote id="F4">These shares were granted in the form of PSUs, in connection with the Dividend, with respect to 6,242 unvested PSUs granted to the reporting person on May 9, 2017, and adjusted for previously declared and paid cash dividends. These PSUs will vest and are payable concurrent with the underlying PSUs.</footnote>
        <footnote id="F5">These shares were granted in the form of RSUs, in connection with the Dividend, with respect to 3,292 unvested RSUs granted to the reporting person on August 13, 2018, and adjusted for previously declared and paid cash dividends. These RSUs will vest and are payable concurrent with the underlying RSUs.</footnote>
        <footnote id="F6">These shares were granted in the form of PSUs, in connection with the Dividend, with respect to 3,827 PSUs granted to the reporting person on August 13, 2018, and adjusted for previously declared and paid cash dividends. These PSUs will vest and are payable concurrent with the underlying PSUs.</footnote>
        <footnote id="F7">These shares were granted in the form of PSUs, in connection with the Dividend, with respect to 4,819 PSUs granted to the reporting person on August 13, 2018, and adjusted for previously declared and paid cash dividends. These PSUs will vest and are payable concurrent with the underlying PSUs.</footnote>
        <footnote id="F8">These shares were granted in the form of RSUs, in connection with the Dividend, with respect to 5,714 RSUs granted to the reporting person on August 12, 2019, and adjusted for a previously declared and paid cash dividend. These RSUs will vest and are payable concurrent with the underlying RSUs.</footnote>
        <footnote id="F9">These shares were granted in the form of PSUs, in connection with the Dividend, with respect to 5,318 PSUs granted to the reporting person on August 12, 2019, and adjusted for a previously declared and paid cash dividend. These PSUs will vest and are payable concurrent with the underlying PSUs.</footnote>
        <footnote id="F10">These shares were granted in the form of PSUs, in connection with the Dividend, with respect to 6,510 PSUs granted to the reporting person on August 12, 2019, and adjusted for a previously declared and paid cash dividend. These PSUs will vest and are payable concurrent with the underlying PSUs.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Karen J. Yodis, by Power of Attorney</signatureName>
        <signatureDate>2019-12-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
