IEC 61056-2:2012

General purpose lead-acid batteries (valve-regulated types) - Part 2: Dimensions, terminals and marking

IEC 61056-2:2012 specifies the dimensions, terminals and marking for all general purpose lead-acid cells and batteries of the valve regulated type:
- for either cyclic or float charge application;
- in portable equipment, for instance, incorporated in tools, toys, or in static emergency, or uninterruptible power supply and general power supplies.
This third edition cancels and replaces the second edition of IEC 61056-2 published in 2002. It constitutes a technical revision. The main changes consist in adding new battery designations and an update of the requirements like the one concerning the marking.
The contents of the corrigendum of October 2012 have been included in this copy.

Batteries d'accumulateurs au plomb-acide pour usage général (types à soupapes) - Partie 2: Dimensions, bornes et marquage

La CEI 61056-2:2012 spécifie les dimensions, les bornes et les marquages pour les éléments de batteries d'accumulateurs au plomb-acide pour usage général de types étanches à soupapes:
- dans le cadre d'applications soit cycliques, soit à charge flottante;
- inclus dans des équipements portatifs, par exemple, incorporés dans des outils, des jouets, ou dans des sources centrales pour éclairage de sécurité ou des alimentations de secours et générales. Cette troisième édition annule et remplace la deuxième édition de la CEI 61056-2 publiée en 2002. Elle constitue une révision technique. Les principales modifications consistent en l'ajout de nouvelles désignations de batteries et en la mise à jour des exigences, comme celles concernant le marquage.
Le contenu du corrigendum d'octobre 2012 a été pris en considération dans cet exemplaire.

General Information

• Status: Published
• Publication Date: 21-Feb-2012
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.220.20 - Acid secondary cells and batteries
• Technical Committee: TC 21 - Secondary cells and batteries
• Drafting Committee: MT 6 - TC 21/MT 6
• Current Stage: PPUB - Publication issued
• Start Date: 15-Feb-2012
• Completion Date: 22-Feb-2012

Relations

• Corrected By: IEC 61056-2:2012/COR1:2012 - Corrigendum 1 - General purpose lead-acid batteries (valve-regulated types) - Part 2: Dimensions, terminals and marking
• Effective Date: 05-Sep-2023
• Revises: IEC 61056-2:2002 - General purpose lead-acid batteries (valve-regulated types) - Part 2: Dimensions, terminals and marking
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61056-2 ®
Edition 3.0 2012-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
General purpose lead-acid batteries (valve-regulated types) –
Part 2: Dimensions, terminals and marking

Batteries d'accumulateurs au plomb-acide pour usage général (types à
soupapes) –
Partie 2: Dimensions, bornes et marquage

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les
microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

Useful links:
IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org
The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and
by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and
committee,…). definitions in English and French, with equivalent terms in
It also gives information on projects, replaced and additional languages. Also known as the International
withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.

IEC Just Published - webstore.iec.ch/justpublished Customer Service Centre - webstore.iec.ch/csc
Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication
details all new publications released. Available on-line and or need further assistance, please contact the
also once a month by email. Customer Service Centre: [e-mail].

A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.

Liens utiles:
Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org
La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes
publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000
référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que
Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.
publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique
International (VEI) en ligne.
Just Published CEI - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications de la CEI.
Just Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur
Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions
contactez-nous: [e-mail].
IEC 61056-2 ®
Edition 3.0 2012-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
General purpose lead-acid batteries (valve-regulated types) –

Part 2: Dimensions, terminals and marking

Batteries d'accumulateurs au plomb-acide pour usage général (types à

soupapes) –
Partie 2: Dimensions, bornes et marquage

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
M
CODE PRIX
ICS 29.220.20 ISBN 978-2-88912-894-5

– 2 – 61056-2 © IEC:2012
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Dimensions . 6
5 Terminals . 6
6 Marking . 6
6.1 Marking of polarity . 6
6.2 Marking items . 6
7 Classification of battery-shapes . 6
8 Classification of terminal types . 9
Bibliography . 12

Figure 1 – P-type batteries . 8
Figure 2 – C-type cells . 9
Figure 3 – F-contacts (flat contacts) . 9
Figure 4 – B-contacts (bolt and nut system) . 10
Figure 5 – Lead-type terminal . 10
Figure 6 – Screw contacts . 11
Figure 7 – K-contact (button-contact) . 11

Table 1 – Prismatic design (P-type) . 7
Table 2 – Cylindrical shape (C-type) . 8

61056-2 © IEC:2012 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GENERAL PURPOSE LEAD-ACID BATTERIES
(VALVE-REGULATED TYPES) –
Part 2: Dimensions, terminals and marking

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61056-2 has been prepared by IEC technical committee 21:
Secondary cells and batteries.
This third edition cancels and replaces the second edition of IEC 61056-2 published in 2002. It
constitutes a technical revision.
The main changes consist in adding new battery designations and an update of the
requirements like the one concerning the marking.

– 4 – 61056-2 © IEC:2012
The text of this standard is based on the following documents:
FDIS Report on voting
21/766/FDIS 21/773/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61056 series, published under the general title General purpose
lead-acid batteries (valve-regulated types), can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
The contents of the corrigendum of October 2012 have been included in this copy.

61056-2 © IEC:2012 – 5 –
GENERAL PURPOSE LEAD-ACID BATTERIES
(VALVE-REGULATED TYPES) –
Part 2: Dimensions, terminals and marking

1 Scope
This part of IEC 61056 specifies the dimensions, terminals and marking for all general purpose
lead-acid cells and batteries of the valve regulated type :
• for either cyclic or float charge application;
• in portable equipment, for instance, incorporated in tools, toys, or in static emergency, or
uninterruptible power supply and general power supplies.
The cells of this kind of lead-acid battery may either have flat-plate electrodes in prismatic
containers or have spirally wound pairs of electrodes in cylindrical containers. The sulphuric
acid in these cells is immobilized between the electrodes either by absorption in a microporous
structure or in a gelled form.
This standard defines the dimensions of the batteries in length, height and width, as well as the
shapes of the terminals.
The lead-acid cells and batteries which are described in this standard should be tested
according to the requirements of IEC 61056-1.
This part of IEC 61056 does not apply for example to lead-acid cells and batteries used for
• vehicle engine starting applications (IEC 60095 series),
• traction applications (IEC 60254 series) or
• stationary applications (IEC 60896 series).
Conformance to this standard requires that dimensions, terminals and marking correspond to
these requirements.
2 Normative references
The following documents, in whole or in part, are normatively referenced in thi
...