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<title>Prepared By R.R. Donnelley Financial -- Form 8-K</title>
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<b>UNITED STATES </b></font></div>

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<b>SECURITIES AND EXCHANGE COMMISSION </b></font></div>

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<b>Washington, D.C. 20549 </b></font></div>

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<b>Form 8-K </b></font></div> <div><font Size="1">&nbsp;</font></div>

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<b>Current Report </b></font></div>

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<b>Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 </b></font></div>

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<b>Date of Report (Date of earliest event reported):&nbsp;&nbsp;05/23/2006 </b></font></div>




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<b>EnerSys </b></font></div>

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<b>(Exact name of registrant as specified in its charter)</b></font></div>

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<b>Commission File Number:&nbsp;&nbsp;1-32253</b></font></div>

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<div Align="center"><font Face="times New Roman" Size="3" Color="#000000"><b>Delaware</b></font>
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<b>(State or other jurisdiction of</b></font>
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<div Align="center"><font Face="times New Roman" Size="2" Color="#000000"><b>(IRS Employer</b></font>
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<b>incorporation)</b></font>
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<b>Identification No.)</b></font>
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<b>2366 Bernville Road, Reading, Pennsylvania 19605</b></font></div>


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<b>(Address of principal executive offices, including zip code)</b></font>
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<b>(610) 208-1991 </b></font>
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<b>(Registrant&#146;s telephone number, including area code)</b></font>
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<b> </b></font>
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<b>(Former name or former address, if changed since last report) </b></font>
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<b>Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:<BR><BR>
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<b>[&nbsp;&nbsp;]&nbsp;&nbsp;
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<BR><BR>

[&nbsp;&nbsp;]&nbsp;&nbsp;
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR><BR>


[&nbsp;&nbsp;]&nbsp;&nbsp;
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR><BR>


[&nbsp;&nbsp;]&nbsp;&nbsp;
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
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Information to be included in the report</b>
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<b>Item 2.02.&nbsp;&nbsp;&nbsp;&nbsp;Results of Operations and Financial Condition</b></font>
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On May 23, 2006, EnerSys issued an earnings press release discussing the Company's expected fourth quarter results.  The press release, attached as Exhibit 99.1 hereto and incorporated herein by reference, is being furnished to the SEC and shall not be deemed to be "filed" for any purpose.</font>
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<b>Item 9.01.&nbsp;&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits</b></font>
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(a) Not applicable.</div><div align="left" style="text-indent:4%">(b) Not applicable</div><div align="left" style="text-indent:4%">(c) Exhibits</div><div align="left" style="text-indent:4%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 99.1 Press Release, dated May 23, 2006, of EnerSys regarding expected fourth quarter results.</font>
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<b>Signature(s) </b></font>
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Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto
duly authorized. </font>
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	EnerSys</font>
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	Date: May 23, 2006</font>
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	By:</font>
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	/s/&nbsp;&nbsp;&nbsp;&nbsp;Michael T. Philion</font>
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	Michael T. Philion</font>
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	<div><font Face="times New Roman" Size="2" Color="#000000">Executive Vice President - Finance and Chief Financial Officer</font>
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<b>Exhibit Index </b></font>
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	<b>Exhibit&nbsp;No.</b></font>
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	<b>Description</b></font>
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	EX-99.1</font>
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	Press Release, dated May 23, 2006, of EnerSys regarding expected fourth quarter results.</font>
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Prepared By R.R. Donnelley Financial -- Form 8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 8-K
Current Report
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported):  05/23/2006
EnerSys
(Exact name of registrant as specified in its charter)
Commission File Number:  1-32253
Delaware
23-3058564
(State or other jurisdiction of
(IRS Employer
incorporation)
Identification No.)
2366 Bernville Road, Reading, Pennsylvania 19605
(Address of principal executive offices, including zip code)
(610) 208-1991
(Registrant's telephone number, including area code)
(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
[  ]  
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[  ]  
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[  ]  
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[  ]  
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Information to be included in the report
Item 2.02.    Results of Operations and Financial Condition
On May 23, 2006, EnerSys issued an earnings press release discussing the Company's expected fourth quarter results.  The press release, attached as Exhibit 99.1 hereto and incorporated herein by reference, is being furnished to the SEC and shall not be deemed to be "filed" for any purpose.
Item 9.01.    Financial Statements and Exhibits
(a) Not applicable.
(b) Not applicable
(c) Exhibits
99.1 Press Release, dated May 23, 2006, of EnerSys regarding expected fourth quarter results.
Signature(s)
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto
duly authorized.
EnerSys
Date: May 23, 2006
By:
/s/    Michael T. Philion
Michael T. Philion
Executive Vice President - Finance and Chief Financial Officer
Exhibit Index
Exhibit No.
Description
EX-99.1
Press Release, dated May 23, 2006, of EnerSys regarding expected fourth quarter results.