Exhibit 21.1

ENERSYS

Subsidiaries

EnerSys Argentina S.A.						Argentina
EnerSys Australia Pty Ltd.						Australia
ICS Industries Pty Ltd.						Australia
ICS Sheet Metal Pty Ltd.						Australia
International Communication Shelters Australasia Pty Ltd.						Australia
Lancord Pty Ltd.						Australia
Lenmic Pty Ltd.						Australia
National Infrastructure Pty Ltd.						Australia
National Infrastructure Services Pty Ltd.						Australia
Powercom (NSW) Pty Ltd.						Australia
Alpha Technologies Pty. Ltd.						Australia
EnerSys GmbH						Austria
EnerSys BVBA						Belgium
EnerSys Brasil Ltda.						Brazil
EnerSys Participacoes Ltda.						Brazil
Industrial Battery Holding Ltda.						Brazil
Alpha Innovations Industria e Comercio de Produtos Eletronicos Ltda.						Brazil
EnerSys AD (99.8%) *						Bulgaria
EnerSys Bulgaria EOOD						Bulgaria
EnerSys Canada Inc.						Canada
Alpha Technologies Ltd.						Canada
Argus Research Ltd.						Canada
Alpha Technical Services Ltd.						Canada
EnerSys Cayman Euro L.P.						Cayman Islands
EnerSys Cayman Holdings L.P.						Cayman Islands
EnerSys Cayman Inc.						Cayman Islands
YCI, Inc.						Cayman Islands
EnerSystem Chile Ltda.						Chile
EnerSys (Chaozhou) Huada Batteries Company Limited						China
EnerSys (China) Huada Batteries Company Limited						China
EnerSys (Chongqing) Huada Batteries Company Limited						China
EnerSys (Jiangsu) Huada Batteries Company Limited (94.7%) *						China
EnerSys (Yangzhou) Huada Batteries Co. Ltd.						China
Shenzhen Huada Power Supply Mechanical & Electrical Co. Ltd.						China
Alphatec Technologies (Shenzhen) Co. Ltd.						China
SiteTel Shanghai Co Ltd.						China
EnerSys, s.r.o.						Czech Republic
EnerSys A/S						Denmark
EnerSys Europe Oy						Finland
EnerSys SARL						France

EnerSys SNC						France
Hawker GmbH						Germany
Hawker Systems GmbH & Co. KG.						Germany
EnerSys AE						Greece
EnerSys Asia Limited						Hong Kong
Telecomponents & Supply (Hong Kong) Ltd.						Hong Kong
EnerSys Hungária Kft.						Hungary
EnerSys Battery Private Limited						India
EnerSys India Batteries Private Ltd.						India
Alpha Tech Energy Solutions India Private Limited						India
EnerSys S.r.l.						Italy
EnerSys Holdings (Luxembourg) Sarl						Luxembourg
EnerSys (Luxembourg) Finance Sarl						Luxembourg
DCPM Engineering Sdn Bhd						Malaysia
EnerSys Malaysia Sdn Bhd						Malaysia
MIB Energy Sdn Bhd						Malaysia
UTS Holdings Sdn Bhd						Malaysia
UTS Technology (JB) Sdn Bhd						Malaysia
UTS Technology (PG) Sdn Bhd						Malaysia
EnerSys de Mexico, S de R.L. de CV						Mexico
EnerSys de Mexico II, S de R.L. de CV						Mexico
Powersonic, S de R.L. de CV						Mexico
Yecoltd, S. de R.L. de CV						Mexico
Batterias Hawker de Mexico S. de R.L. de C.V.						Mexico
Alpha Mexico Network Power S.A. de C.V.						Mexico
Riverfront Holding S. de R.L. de C.V.						Mexico
Alpha Innovations Mexico S. de R.L. de C.V.						Mexico
ENAS Industrial Batteries Morocco Sarl						Morocco
EnerSys AS						Norway
EnerSys sp. z o.o.						Poland
EnerSys JSC						Russia
Battery Power International Pte Ltd.						Singapore
EnerSys Reserve Power Pte. Ltd.						Singapore
EnerSys South East Asia Pte. Ltd.						Singapore
NaviSemi Energy Pte Ltd.						Singapore
EnerSys, s.r.o.						Slovak Republic
Acumuladores Industriales EnerSys SA						Spain
EnerSys AB						Sweden
Purcell Systems International AB						Sweden
N Holding AB						Sweden
SiteTel Sweden AB						Sweden
EH Batterien AG						Switzerland
EH Europe GmbH						Switzerland
EH Global Holdings GmbH						Switzerland
EH Swiss Holdings GmbH						Switzerland

EnerSys BV						The Netherlands
Enersys Akü Sanaya Dis Ticaret Limited Sirketi						Turkey
EnerSys LLC						Ukraine
NorthStar Battery DMCC						United Arab Emirates
ABSL Power Solutions Ltd.						United Kingdom
EnerSys Holdings UK Ltd.						United Kingdom
EnerSys Ltd.						United Kingdom
NaviSemi Inc.						California
ABSL Power Solutions Inc.						Delaware
EnerSys Advanced Systems Inc.						Delaware
EnerSys Capital Inc.						Delaware
EnerSys Delaware Inc.						Delaware
EnerSys Delaware LLC I						Delaware
EnerSys Delaware LLC II						Delaware
EnerSys Delaware LLC III						Delaware
EnerSys Delaware LLC IV						Delaware
EnerSys Delaware LLC V						Delaware
EnerSys Energy Products Inc.						Delaware
EnerSys European Holding Co.						Delaware
EnerSys Mexico Holdings LLC						Delaware
EnerSys Mexico Management LLC						Delaware
Esfinco,LLC						Delaware
Hawker Powersource, Inc.						Delaware
Hawker Power Systems, Inc.						Delaware
Purcell Systems, Inc.						Delaware
Quallion LLC						Delaware
NorthStar Battery Company, LLC						Missouri
New Pacifico Realty, Inc.						Nevada
Alpha Technologies Services, Inc.						Nevada
Alpha Broadband Services Inc.						Nevada
Alpha Alternative Energy Inc.						Nevada
Coppervale Enterprises Inc.						Washington
Outback Power Technologies, Inc.						Washington

*    These entities are majority-owned by EnerSys with the remaining interests held by third parties.