Exhibit 21.1

ENERSYS

Subsidiaries

Subsidiary |  | Jurisdiction of Incorporation or Organization
EnerSystem de Argentina S.A. |  | Argentina
EnerSys Australia Pty Ltd. |  | Australia
EnerSys GmbH |  | Austria
EnerSys SPRL |  | Belgium
EnerSystem do Brazil Ltda. |  | Brazil
EnerSys Participacoes Ltda. |  | Brazil
Industrial Battery Holding Ltda. |  | Brazil
EnerSys AD * |  | Bulgaria
EnerSys Canada Inc. |  | Canada
EnerSys Cayman Euro L.P. |  | Cayman Islands
EnerSys Cayman Holdings L.P. |  | Cayman Islands
EnerSys Cayman Inc. |  | Cayman Islands
EnerSys Cayman L.P. |  | Cayman Islands
YCI, Inc. |  | Cayman Islands
EnerSystem Chile Ltda. |  | Chile
EnerSys (Chaozhou) Huada Batteries Company Limited |  | People’s Republic of China
EnerSys (People’s Republic of China) Huada Batteries Company Limited |  | People’s Republic of China
EnerSys (Chongqing) Huada Batteries Company Limited |  | People’s Republic of China
EnerSys (Jiangsu) Huada Batteries Company Limited * |  | People’s Republic of China
Shenzhen Huada Power Supply Mechanical & Electrical Co. Ltd. * |  | People’s Republic of China
EnerSys, s.r.o. |  | Czech Republic
EnerSys A/S |  | Denmark
EnerSys Europe Oy |  | Finland
EnerSys SARL * |  | France
EAS Germany GmbH |  | Germany
GAZ GmbH |  | Germany
Hawker GmbH |  | Germany
EnerSys AE |  | Greece
EnerSys Asia Limited |  | Hong Kong
EnerSys Hungária Kft. |  | Hungary
EnerSys Battery Private Limited |  | India
Energy Leader Batteries India Private Ltd. * |  | India
EnerSys S.r.l. |  | Italy
EnerSys Holdings (Luxembourg) Sarl |  | Luxembourg
EnerSys Luxembourg Finance Sarl |  | Luxembourg
EnerSys de Mexico, S.A. de CV |  | Mexico
Powersonic, S.A. de CV |  | Mexico
Yecoltd, S. de R.L. de CV |  | Mexico
ENAS Industrial Batteries Morocco Sarl |  | Morocco
EnerSys AS |  | Norway
EnerSys sp. z o.o. |  | Poland
Powersafe Acumuladores Industrialis Unipessoal, Lda. |  | Portugal
EnerSys CJSC |  | Russia
EnerSys Reserve Power Pte. Ltd. |  | Singapore
EnerSys, s.r.o. |  | Slovak Republic
Battech (Pty) Ltd. * |  | South Africa
Battery Technologies (Pty) Ltd. * |  | South Africa
Acumuladores Industriales EnerSys SA |  | Spain
EnerSys AB |  | Sweden
EH Batterien AG |  | Switzerland
EH Europe GmbH |  | Switzerland
EnerSys BV |  | The Netherlands

Subsidiary |  | Jurisdiction of Incorporation or Organization
EnerSys Assad Industrial Sarl |  | Tunisia
EnerSys Assad North Africa Sarl |  | Tunisia
EnerSys Assad Sarl * |  | Tunisia
Enersys Akü Sanaya Dis Ticaret Limited Sirketi |  | Turkey
EnerSys LLC |  | Ukraine
ABSL Power Solutions Ltd. |  | United Kingdom
AGM Batteries Limited |  | United Kingdom
EnerSys Holdings UK Ltd. |  | United Kingdom
EnerSys Ltd. |  | United Kingdom
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 Energy Products Inc. |  | Delaware
EnerSys European Holding Co. |  | Delaware
EnerSys Mexico Holdings LLC |  | Delaware
EnerSys Mexico Management LLC |  | Delaware
Esfinco, Inc. |  | Delaware
Esrmco, Inc. |  | Delaware
Hawker Powersource, Inc. |  | Delaware
New Pacifico Realty, Inc. |  | Nevada

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