LIMITED POWER OF ATTORNEY

Know all by these presents that the undersigned hereby constitutes and appoints
each of Karen J. Yodis, Barbara Weaver, and Joseph G. Lewis, signing
individually, as the undersigned's true and lawful attorney in fact to:

execute for and on behalf of the undersigned, in the undersigned's capacity as a
Director of EnerSys (the "Company"), Forms 3, 4, and 5 in accordance with
Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;

do and perform any and all acts for and on behalf of the undersigned which may
be necessary or desirable to obtain filing codes, complete and execute any such
Form 3, 4, or 5 and timely file such form with the United States Securities and
Exchange Commission and any stock exchange or similar authority; and

take any other action of any type whatsoever in connection with the foregoing
which, in the opinion of such attorney in fact, may be of benefit to, in the
best interest of, or legally required by, the undersigned, it being understood
that the documents executed by such attorney in fact on behalf of the
undersigned pursuant to this Limited Power of Attorney shall be in such form and
shall contain such terms and conditions as such attorney in fact may approve in
such attorney in fact's discretion.

The undersigned hereby grants to each such attorney in fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney in fact, or such attorney
in fact's substitute or substitutes, shall lawfully do or cause to be done by
virtue of this power of attorney and the rights and powers herein granted.  The
undersigned acknowledges that the foregoing attorneys in fact, in serving in
such capacity at the request of the undersigned, are not assuming, nor is the
Company assuming, any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.

The undersigned hereby authorizes each such attorney-in-fact to file any
original or copy of this Limited Power of Attorney with any institution or
person or in any public office, including the United States Securities and
Exchange Commission.

I hereby revoke any and all Powers of Attorney executed by me prior to the date
of this Limited Power of Attorney that cover the subject matter set forth
herein.

This Limited Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 with respect to the
undersigned's holdings or transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys in fact.

Any provision of this Limited Power of Attorney judicially determined to be
unenforceable or invalid for any reason shall be entirely disregarded and such
determination shall not affect or impair the other provisions hereof.

IN WITNESS WHEREOF, the undersigned has caused this Limited Power of Attorney to
be executed as of this 6th day of July, 2017.

Name:  /a/ Nelda J. Connors