SIST EN IEC 62902:2025

SLOVENSKI STANDARD
01-junij-2025
Nadomešča:
SIST EN IEC 62902:2019
Sekundarne celice in baterije - Simboli za označevanje identifikacije kemične
sestave
Secondary cells and batteries - Marking symbols for identification of their chemistry
Sekundärbatterien - Symbole für die Kennzeichnung zur Identifikation ihrer Chemie
Batteries et éléments d'accumulateurs - Symboles de marquage pour l'identification de
leur caractéristique chimique
Ta slovenski standard je istoveten z: EN IEC 62902:2025
ICS:
01.080.20 Grafični simboli za posebno Graphical symbols for use on
opremo specific equipment
29.220.01 Galvanski členi in baterije na Galvanic cells and batteries
splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62902

NORME EUROPÉENNE
EUROPÄISCHE NORM April 2025
ICS 29.220.20; 29.220.30 Supersedes EN IEC 62902:2019
English Version
Secondary cells and batteries - Marking symbols for
identification of their chemistry
(IEC 62902:2025)
Batteries d'accumulateurs - Symboles de marquage pour Sekundärbatterien - Symbole für die Kennzeichnung zur
l'identification de leur caractéristique chimique Identifikation ihrer Chemie
(IEC 62902:2025) (IEC 62902:2025)
This European Standard was approved by CENELEC on 2025-04-02. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62902:2025 E
European foreword
The text of document 21/1195/CDV, future edition 2 of IEC 62902, prepared by TC 21 "Secondary
cells and batteries" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-04-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-04-30
document have to be withdrawn
This document supersedes EN IEC 62902:2019 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62902:2025 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60622 NOTE Approved as EN 60622
IEC 61056 (series) NOTE Approved as EN 61056 (series)
IEC 61951-1 NOTE Approved as EN 61951-1
IEC 61951-2 NOTE Approved as EN 61951-2
IEC 62620:2014 NOTE Approved as EN 62620:2015 (not modified)
IEC 62675 NOTE Approved as EN 62675
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60896-21 2004 Stationary lead-acid batteries - Part 21: Valve EN 60896-21 2004
regulated types - Methods of test
IEC 60896-22 2004 Stationary lead-acid batteries - Part 22: Valve EN 60896-22 2004
regulated types - Requirements
IEC 61960-3 2017 Secondary cells and batteries containing alkaline EN 61960-3 2017
or other non-acid electrolytes - Secondary lithium
cells and batteries for portable applications - Part
3: Prismatic and cylindrical lithium secondary
cells and batteries made from them
ISO 7000 - Graphical symbols for use on equipment - - -
Registered symbols
IEC 62902 ®
Edition 2.0 2025-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Secondary cells and batteries – Marking symbols for identification of their

chemistry
Batteries d’accumulateurs – Symboles de marquage pour l’identification de leur

caractéristique chimique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.220.20; 29.220.30  ISBN 978-2-8327-0098-3

– 2 – IEC 62902:2025 © IEC 2025
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Application of markings . 12
4.1 General . 12
4.2 Marking of electrochemical battery systems . 12
4.3 Marking requirements for additional chemistry information of Li-ion batteries . 13
4.4 Application of the markings on the battery . 13
5 Markings. 13
5.1 Markings without recycling symbol . 13
5.1.1 General . 13
5.1.2 Lead acid batteries . 13
5.1.3 Nickel cadmium batteries . 13
5.1.4 Nickel metal hydride batteries . 14
5.1.5 Lithium ion batteries . 14
5.1.6 Lithium metal batteries . 14
5.2 Optional markings with recycling symbol . 14
5.2.1 General . 14
5.2.2 Lead acid batteries . 14
5.2.3 Nickel cadmium batteries . 15
5.2.4 Nickel metal hydride batteries . 15
5.2.5 Lithium ion batteries . 15
5.2.6 Lithium metal batteries . 16
5.3 Background colours . 16
5.4 Design of markings and symbols . 16
5.4.1 General . 16
5.4.2 Dimensions for symbols . 16
5.4.3 Dimensions for markings without recycling symbol . 17
5.4.4 Dimensions for markings with recycling symbol . 18
5.4.5 Adaptive size . 18
5.4.6 Design of the recycling symbol . 19
5.4.7 Design of the letters (characters) . 19
5.4.8 Exception for marking with a single colour . 20
6 Durability of markings with respect to chemical agents . 20
6.1 General . 20
6.2 Test procedure . 21
6.2.1 General . 21
6.2.2 Test with water and recommended cleaning agents . 21
6.2.3 Test with electrolyte . 21
6.2.4 Test with neutralizing solutions . 21
6.3 Criteria . 21
Annex A (informative) Colours for background . 22
A.1 General . 22
A.2 Colour definition for background . 22

IEC 62902:2025 © IEC 2025 – 3 –
Annex B (informative) Calculation method for the battery volume . 23
Bibliography . 24

Figure 1 – Example of marking for lead acid batteries . 13
Figure 2 – Example of marking for nickel cadmium batteries . 13
Figure 3 – Example of marking for nickel metal hydride batteries . 14
Figure 4 – Example of marking for lithium ion batteries . 14
Figure 5 – Example of marking for lithium metal batteries . 14
Figure 6 – Example of marking with recycling symbol for lead acid batteries . 14
Figure 7 – Example of marking with recycling symbol for nickel cadmium batteries . 15
Figure 8 – Example of marking with recycling symbol for nickel metal hydride batteries . 15
Figure 9 – Example of marking with recycling symbol for lithium ion batteries . 15
Figure 10 – Example of marking with recycling symbol for lithium metal batteries . 16
Figure 11 – Size of marking without recycling symbol . 17
Figure 12 – Size of marking with recycling symbol . 18
Figure 13 – Design of recycling symbol . 19
Figure 14 – Design of letters . 19
Figure 15 – Examples for markings with frames of a contrasting colour . 20

Table 1 – Recycling and ecolabels regarding batteries . 7
Table 2 – List of dimensions for symbols . 17
Table 3 – Test matrix for durability test of markings . 20
Table A.1 – Colour references . 22

– 4 – IEC 62902:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SECONDARY CELLS AND BATTERIES –
MARKING SYMBOLS FOR IDENTIFICATION OF THEIR CHEMISTRY

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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 62902 has been prepared by IEC technical committee 21: Secondary cells and batteries. It
is an International Standard.
This second edition cancels and replaces the first edition published in 2019. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Addition of an Introduction;
b) Addition of exemptions and clarifications for the marking background colour requirement;
c) Addition of a calculation method for the battery volume;
d) Addition of a new note to the Scope;
e) Addition of a term and definition for the principal display panel;
f) Addition of further chemistry information for Li-ion batteries;

IEC 62902:2025 © IEC 2025 – 5 –
g) Addition of a new subclause on adaptive size;
h) Clarification of the test methods for durability and permanence of the marking.
The text of this International Standard is based on the following documents:
Draft Report on voting
21/1195/CDV 21/1208/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

– 6 – IEC 62902:2025 © IEC 2025
INTRODUCTION
This document introduces uniform marking symbols for the identification of the secondary
battery chemistries prevailing on the market. A primary reason is that lead smelters around the
world are reporting increasing numbers of lithium ion batteries finding their way into the lead-
acid battery waste stream. Because the shape and design of these batteries sometimes is very
similar, it can be difficult for sorting facilities and battery smelters to distinguish one technology
from the other if there is no clear identification of the battery chemistry by marking symbols.
Processing lithium ion batteries within a lead smelter, e-waste facility, or municipal waste
sorting facility, can result in fire or explosions, with numerous accidents or near-accidents
already reported in European and US recycling facilities.
Besides lead-acid and lithium ion batteries, the labelling scheme should also apply to other
battery chemistries with a significant market share, such as nickel metal hydride and nickel
cadmium. Other batteries, such as sodium ion batteries, should be included in the marking
scheme when their market share becomes significant.
A clear identification of the battery chemistry would be helpful throughout the entire battery
lifetime, i.e. from the selection and purchase of a new battery (e.g. by economic operators as
well as end users), to transportation, installation and use of the battery and then to waste battery
collection, sorting, storage and treatment.
The following standards and recommendations were considered during the development of this
document.
The Battery Association of Japan (BAJ) has issued "Guidelines for Recycle Mark on
rechargeable cells and batteries for portable applications" which include an optional colour code
system for identifying major (rechargeable) battery chemistries: Pb, Ni-Cd, Ni-MH, and Li-ion.
These guidelines also distinguish different cathode materials as well as important impurities
(mostly from the anode material) .
Call2Recycle has introduced in Canada and the United States of America a licensed labelling
program for batteries. It is a non-profit organization that collects and recycles batteries on behalf
of companies that pay a fee to license the label.
The recycling symbol required on batteries within the scope of this document is the general
symbol for recovery/recyclable as standardised in ISO 7000-1135:2004-01, see item 1 in
Table 1. It is worth noting the information that ISO provides for this symbol: Function/description:
to indicate that the marked item or its material is part of a recovery or recycling process.
Additional information: the symbol is applicable only to those products or materials for which at
the end of life there is a well-established collection route and recycling process, and which does
not significantly impair the effectiveness of other recycling schemes.
Battery marking can also be subject to regional legislation. One example being the crossed-out
wheeled bin used in the European Union (EU) and in some other countries to make consumers
aware of their obligation to make their batteries available for separate collection. Some other
regulations, e.g. Regulation (EU) 2023/1542 on batteries and waste batteries, can require the
use of additional symbols for substances of very high concern (SVHC), namely cadmium (Cd)
and lead (Pb) exceeding certain concentration levels .
___________
For more information see the document referred to under "Source reference" for item 5 in Table 1.
Regulation EU 2023/1542 does not require the addition of the Hg symbol to the separate collection symbol.
However, there is a requirement for max. 0,0005 % Hg for all batteries in Annex I Restriction on substances of
the Batteries Regulation.
IEC 62902:2025 © IEC 2025 – 7 –
In a comment submitted by Battery Council International (BCI) on a request by the
Environmental Protection Agency (USA) for information regarding the development of best
practices for the collection of batteries to be recycled and voluntary battery labelling guidelines,
it was suggested that battery labels should have a consistent and simple marking (e.g. a colour
code) across all battery chemistries to encourage and aid appropriate handling which should,
at a minimum, address three primary goals – in descending order of priority:
1) inform and educate consumers to keep batteries out of the trash and curbside recycling,
and direct batteries to dedicated battery recycling networks where available;
2) provide consumers and recycling network employees with human-readable information to
enable sorting of used batteries among major chemistry families (e.g. Pb, Li-ion, Ni-Cd, Ni-
MH, and Li-metal);
3) if appropriate within a chemistry family, inform recyclers of the unique features, components
or constituents or both, for recovery (e.g. cathode material).
Table 1 contains a list of recycling and ecolabels that can be expected on batteries.
Table 1 – Recycling and ecolabels regarding batteries
No. Symbol Official name Alternative Purpose Source reference
information
1 General symbol for Möbius loop, To indicate that the ISO 7000-1135:2004-01
recovery/recyclable three curved marked item or its
www.iso.org/obp
arrows material is part of a
recovery or recycling
process.
2 4 in 1 symbol The white interior Environmental Protection
shows 4 arrows Administration of Taiwan
pointing outwards (Province of China)

3 Crossed-out wheeled To indicate "separate Regulation (EU)
bin collection" for all 2023/1542
batteries and
accumulators
4 Call 2 Recycle battery Private recycling Battery recycling
seal program in the USA and
Seal usage standards
Canada
5 Recycling symbol and Guidelines for Compliance with the Tecchio, P. el al.,
a
recycle mark on Japanese Law for the Analysis of material
chemistry for batteries
batteries Promotion of Effective efficiency aspects of
Utilization of Resources personal computer
...