Exhibit 31.1

Certification of Principal Executive Officer

Pursuant To Rule 13a-14(a)/15d-14(a) Under the Securities Exchange Act Of 1934

I, David M. Shaffer, certify that:

1.I have reviewed this Amendment No. 1 to the Quarterly Report on Form 10-Q of EnerSys; and

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

By	/s/ David M. Shaffer
	David M. Shaffer
	Chief Executive Officer

Date: August 11, 2022