<SEC-DOCUMENT>0001209191-19-040227.txt : 20190702
<SEC-HEADER>0001209191-19-040227.hdr.sgml : 20190702
<ACCEPTANCE-DATETIME>20190702161520
ACCESSION NUMBER:		0001209191-19-040227
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190628
FILED AS OF DATE:		20190702
DATE AS OF CHANGE:		20190702

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KANE KERRY M
		CENTRAL INDEX KEY:			0001493257

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32253
		FILM NUMBER:		19937499

	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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        <issuerName>EnerSys</issuerName>
        <issuerTradingSymbol>ENS</issuerTradingSymbol>
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            <rptOwnerName>KANE KERRY M</rptOwnerName>
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            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19605</rptOwnerZipCode>
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            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP, Corporate Controller &amp; PAO</officerTitle>
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                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
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                    <value>5.6704</value>
                    <footnoteId id="F5"/>
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                    <value>0.00</value>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
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                    <value>16923.9074</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
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            <transactionDate>
                <value>2019-06-28</value>
            </transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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                <transactionShares>
                    <value>1.6477</value>
                    <footnoteId id="F7"/>
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                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
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                <sharesOwnedFollowingTransaction>
                    <value>16925.5552</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                <value></value>
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                <transactionShares>
                    <value>2.0739</value>
                    <footnoteId id="F8"/>
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                    <value>A</value>
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                <sharesOwnedFollowingTransaction>
                    <value>16927.629</value>
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                    <value>D</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 June 28, 2019 to stockholders of record as of June 14, 2019 (the &quot;Dividend&quot;), with respect to 1,413 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 868 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 RSUs, in connection with the Dividend, with respect to 1,736 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="F4">These shares were granted in the form of PSUs, in connection with the Dividend, with respect to 946 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 1,203 unvested RSUs granted to the reporting person on May 9, 2017. These RSUs will vest and are 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 2,661 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="F7">These shares were granted in the form of PSUs, in connection with the Dividend, with respect to 580 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 PSUs, in connection with the Dividend, with respect to 730 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>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Karen J. Yodis, by Power of Attorney</signatureName>
        <signatureDate>2019-07-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
