Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We consent to the incorporation by reference in the Registration Statement on Form S-8 pertaining to the EnerSys 2006 Equity Incentive Plan of our reports dated June 9, 2006, with respect to the consolidated financial statements and schedule of EnerSys, EnerSys management’s assessment of the effectiveness of internal control over financial reporting and the effectiveness of internal control over financial reporting of EnerSys, included in the Annual Report (Form 10-K) for the year ended March 31, 2006.
/s/ Ernst & Young
Philadelphia, Pennsylvania
May 22, 2007
