Secondary cells and batteries - Marking symbols for identification of their chemistry

IEC 62902:2019 specifies methods for the clear identification of secondary cells, batteries, battery modules and monoblocs according to their chemistry (electrochemical storage technology).
The markings described in this document are applicable for secondary cells, batteries, battery modules and monoblocs with a volume of more than 900 cm3.
The marking of the chemistry is useful for the installation, operation and decommissioning phases of battery life.
Many recycling processes are chemistry specific, thus undesired events can occur when a battery which is not of the appropriate chemistry enters a given recycling process. In order to ensure safe handling during sorting and recycling processes, therefore, the battery is marked so as to identify its chemistry.
IEC 62902:2019 defines the conditions of utilization of the markings indicating the chemistry of these secondary batteries.
The details of markings and their application are defined in this document.

Batteries et éléments d'accumulateurs - Symboles de marquage pour l'identification de leur caractéristique chimique

IEC 62902:2019 spécifie les méthodes permettant d'identifier clairement les batteries d'accumulateurs, batteries, modules de batteries et monoblocs selon leur caractéristique chimique (technologie de stockage électrochimique).
Les marquages décrits dans le présent document s'appliquent aux accumulateurs, batteries, modules de batteries et monoblocs ayant un volume supérieur à 900 cm3.
Le marquage de la caractéristique chimique sert à l'installation, au fonctionnement et à la mise hors service de la batterie.
Dans la mesure où de nombreux procédés de recyclage dépendent de la caractéristique chimique, des événements non désirés peuvent se produire lorsqu'une batterie dont la caractéristique chimique n'est pas appropriée est soumise à un procédé de recyclage donné. Par conséquent, afin d'assurer une manipulation sûre pendant les processus de tri et de recyclage, il est nécessaire de marquer la batterie afin d'identifier sa composition chimique.
IEC 62902:2019 définit les conditions d'utilisation des marquages indiquant la caractéristique chimique des batteries d'accumulateurs.
Les détails des marquages et leur application sont définis dans le présent document.

General Information

Status
Published
Publication Date
04-Feb-2019
Current Stage
PPUB - Publication issued
Completion Date
05-Feb-2019
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IEC 62902
Edition 1.0 2019-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Secondary cells and batteries – Marking symbols for identification of their
chemistry
Batteries d'accumulateurs – Symboles de marquage pour l'identification de leur
caractéristique chimique
IEC 62902:2019-02(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62902
Edition 1.0 2019-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
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 978-2-8322-6544-4

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62902:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 6

4 Application of markings ................................................................................................... 9

4.1 General ................................................................................................................... 9

4.2 Marking of electrochemical battery systems ............................................................ 9

4.3 Application of the markings on the battery ............................................................... 9

5 Markings........................................................................................................................ 10

5.1 Markings without recycling symbol ........................................................................ 10

5.1.1 General ......................................................................................................... 10

5.1.2 Lead acid batteries ........................................................................................ 10

5.1.3 Nickel cadmium batteries ............................................................................... 10

5.1.4 Nickel metal hydride batteries ........................................................................ 10

5.1.5 Lithium ion batteries ...................................................................................... 10

5.1.6 Lithium metal batteries .................................................................................. 10

5.2 Optional markings with recycling symbol ............................................................... 11

5.2.1 General ......................................................................................................... 11

5.2.2 Lead acid batteries ........................................................................................ 11

5.2.3 Nickel cadmium batteries ............................................................................... 11

5.2.4 Nickel metal hydride batteries ........................................................................ 11

5.2.5 Lithium ion batteries ...................................................................................... 12

5.2.6 Lithium metal batteries .................................................................................. 12

5.3 Background colours .............................................................................................. 12

5.4 Design of markings and symbols ........................................................................... 12

5.4.1 General ......................................................................................................... 12

5.4.2 Dimensions for symbols ................................................................................. 13

5.4.3 Dimensions for markings without recycling symbol ......................................... 13

5.4.4 Dimensions for markings with recycling symbol ............................................. 14

5.4.5 Design of the recycling symbol in accordance with ISO 7000-

1135:2004-01 ................................................................................................ 15

5.4.6 Design of the letters (characters) ................................................................... 15

6 Durability of markings with respect to chemical agents .................................................. 15

6.1 General ................................................................................................................. 15

6.2 Test procedure ...................................................................................................... 16

6.2.2 Test with water and recommended cleaning agents ....................................... 16

6.2.3 Test with electrolyte ....................................................................................... 16

6.2.4 Test with neutralizing solutions ...................................................................... 16

6.3 Criteria .................................................................................................................. 16

Annex A (informative) Colours for background ..................................................................... 17

A.1 General ................................................................................................................. 17

A.2 Colour definition for background ........................................................................... 17

Bibliography .......................................................................................................................... 18

Figure 1 – Example of marking for lead acid batteries ........................................................... 10

Figure 2 – Example of marking for nickel cadmium batteries ................................................. 10

---------------------- Page: 4 ----------------------
IEC 62902:2019 © IEC 2019 – 3 –

Figure 3 – Example of marking for nickel metal hydride batteries .......................................... 10

Figure 4 – Example of marking for lithium ion batteries ......................................................... 10

Figure 5 – Example of marking for lithium metal batteries ..................................................... 10

Figure 6 – Example of marking with recycling symbol for lead acid batteries ......................... 11

Figure 7 – Example of marking with recycling symbol for nickel cadmium batteries ............... 11

Figure 8 – Example of marking with recycling symbol for nickel metal hydride batteries ........ 11

Figure 9 – Example of marking with recycling symbol for lithium ion batteries ....................... 12

Figure 10 – Example of marking with recycling symbol for lithium metal batteries ................. 12

Figure 11 – Size of marking without recycling symbol ........................................................... 13

Figure 12 – Size of marking with recycling symbol ................................................................ 14

Figure 13 – Design of recycling symbol ................................................................................. 15

Figure 14 – Design of letters ................................................................................................. 15

Table 1 – List of dimensions for symbols .............................................................................. 13

Table 2 – Test matrix for durability test of markings .............................................................. 16

Table A.1 – Colour references .............................................................................................. 17

---------------------- Page: 5 ----------------------
– 4 – IEC 62902:2019 © IEC 2019
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

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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

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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

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Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

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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 62902 has been prepared by IEC technical committee 21:

Secondary cells and batteries.
The text of this International Standard is based on the following documents:
FDIS Report on voting
21/990/FDIS 21/994/RVD

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 6 ----------------------
IEC 62902:2019 © IEC 2019 – 5 –

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication 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.
---------------------- Page: 7 ----------------------
– 6 – IEC 62902:2019 © IEC 2019
SECONDARY CELLS AND BATTERIES –
MARKING SYMBOLS FOR IDENTIFICATION OF THEIR CHEMISTRY
1 Scope

This document specifies methods for the clear identification of secondary cells, batteries,

battery modules and monoblocs according to their chemistry (electrochemical storage

technology).

The markings described in this document are applicable for secondary cells, batteries, battery

modules and monoblocs with a volume of more than 900 cm .

The marking of the chemistry is useful for the installation, operation and decommissioning

phases of battery life.

Many recycling processes are chemistry specific, thus undesired events can occur when a

battery which is not of the appropriate chemistry enters a given recycling process. In order to

ensure safe handling during sorting and recycling processes, therefore, the battery is marked

so as to identify its chemistry.

This document defines the conditions of utilization of the markings indicating the chemistry of

these secondary batteries.
The details of markings and their application are defined in this document.

NOTE Nothing in this document precludes the marking of batteries with recycling and chemistry symbols required

by state, federal, national or regional laws or regulations or with a seal under license by a national recycling

program.
2 Normative references

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.

IEC 60896-21:2004, Stationary lead-acid batteries – Part 21: Valve regulated types – Methods

of test

IEC 60896-22:2004, Stationary lead-acid batteries – Part 22: Valve regulated types –

Requirements

ISO 7000, Graphical symbols for use on equipment (available at http://www.graphical-

symbols.info/equipment)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
---------------------- Page: 8 ----------------------
IEC 62902:2019 © IEC 2019 – 7 –
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
battery

one or more cells fitted with devices necessary for use, for example case, terminals, marking

and protective devices
[SOURCE: IEC 60050-482:2004, 482-01-04]
3.2
battery volume
displacement of the battery
3.3
battery module

group of cells connected together either in a series and/or parallel configuration with or

without protective devices (e.g. fuse or positive temperature coefficient, PTC) and monitoring

circuitry

[SOURCE: IEC 62620:2014, 3.8, modified – The word "battery" has been added to the term,

and "positive temperature coefficient" to the definition.]
3.4
cell

basic functional unit, consisting of an assembly of electrodes, electrolyte, container, terminals

and usually separators that is a source of electric energy obtained by direct conversion of

chemical energy

[SOURCE: IEC 60050-482:2004, 482-01-01, modified – Note to entry has been omitted.]

3.5
lead acid battery

secondary battery with aqueous electrolyte based on dilute sulfuric acid, a positive electrode

of lead dioxide and a negative electrode of lead

[SOURCE: IEC 60050-482:2004, 482-05-01, modified – The term has been changed from

"lead dioxide lead battery" to "lead acid battery", and the note has been deleted.]

3.6
secondary lithium battery
lithium battery which is designed to be electrically recharged

Note 1 to entry: The recharge is accomplished by way of a reversible chemical reaction.

[SOURCE: IEC 60050-482:2004, 482-01-03, modified – The term has been changed from

"secondary cell" to "secondary lithium battery". In the definition, "cell" has become "lithium

battery".]
3.7
lithium ion battery

secondary battery with an organic solvent electrolyte and positive and negative electrodes

which utilize an intercalation compound in which lithium is stored
Note 1 to entry: A lithium ion battery does not contain lithium metal.
[SOURCE: IEC 60050-482:2004, 482-05-07]
---------------------- Page: 9 ----------------------
– 8 – IEC 62902:2019 © IEC 2019
3.8
lithium metal battery

battery which incorporates one or more lithium cells with an organic solvent electrolyte or a

solid electrolyte, a positive electrode and a negative electrode composed of lithium metal

3.9
monobloc battery

battery, with multiple separate but electrically connected cell compartments each of which is

designed to house an assembly of electrodes, electrolyte, terminals or intercell connections

and possible separators

[SOURCE: IEC 60050-482:2004, 482-02-17, modified –The word "interconnections" has been

replaced by "intercell connections" in the definition and the note has been deleted.]

3.10
nickel cadmium battery

secondary battery with an alkaline electrolyte, a positive electrode containing nickel oxide and

a negative electrode of cadmium

[SOURCE: IEC 60050-482:2004, 482-05-02, modified – The first preferred term "nickel oxide

cadmium battery" has been omitted.]
3.11
nickel metal hydride battery

secondary battery with an electrolyte of aqueous potassium hydroxide, a positive electrode

containing nickel as nickel hydroxide and a negative electrode of hydrogen in the form of a

metal hydride
[SOURCE: IEC 60050-482:2004, 482-05-08]
3.12
secondary cell
cell which is designated to be electrically recharged
[SOURCE: IEC 60050-482:2004, 482-01-03, modified – The note has been deleted.]
3.13
marking

line, shape, pattern, letter or symbol on the surface, which helps to identify features of the

marked product or material
3.14
symbol
written character or mark used to represent information

EXAMPLE: The recycling symbol represents the information that the battery is to be recycled.

3.15
label
sheet with an adhesive layer containing information for application on products
3.16
valve regulated lead acid battery
VRLA

secondary battery in which cells are closed but have a valve which allows the escape of gas if

the internal pressure exceeds a predetermined value

Note 1 to entry: The cell or battery cannot normally receive additions to the electrolyte.

---------------------- Page: 10 ----------------------
IEC 62902:2019 © IEC 2019 – 9 –
Note 2 to entry: This note only applies to the French language.
[SOURCE: IEC 60050-482:2004, 482-05-15, modified – Note 2 has been added.]
4 Application of markings
4.1 General

Markings defined in Clause 5 are applicable to all products according to their size and

configuration as defined in the scope of this document.

Each end product in accordance with this document shall be marked in accordance with this

Clause 4 before being placed on the market.

In case of dismantling the batteries into monoblocs and modules for the purpose of reuse of

the monoblocs and modules, additional marking of these monoblocs or batteries shall be

carried out in accordance with this document.

Single cells should not be marked in the event that they are fitted into batteries or modules.

4.2 Marking of electrochemical battery systems

This marking is only applicable to secondary cells and batteries of the following chemistries:

a) lead acid (Pb),
b) nickel cadmium (Ni-Cd),
c) nickel metal hydride (Ni-MH),
d) lithium ion (Li-ion),
e) lithium metal (Li-metal).

Batteries or modules applying more than one of these chemistries shall be marked for all

applied chemistries.

This marking is not applicable for batteries of other chemistries and technologies such as:

f) flow batteries,
g) sodium-sulfur high temperature batteries,
h) Na-NiCl high temperature batteries, and
i) all other chemistries not listed here.
4.3 Application of the markings on the battery
The markings can be fixed on the battery either by:
a) printing, or
b) labelling, or
c) other methods.

The markings shall be applied on the battery or modules before these are placed on the

market.

The markings shall be visible, legible and indelible over the expected life of the batteries.

The markings with the design described in Clause 5 may be integrated into existing printings

or labels.
---------------------- Page: 11 ----------------------
– 10 – IEC 62902:2019 © IEC 2019

The marking shall be placed on the displayed side, which is the side on which the battery

information is placed, to achieve good visibility.

If, due to design reasons or customer requirements, the marking cannot be placed on the

displayed side, the size of the marking shall be as defined in 5.4.
5 Markings
5.1 Markings without recycling symbol
5.1.1 General

Markings shown in Figures 1 to 5 shall be used in the event that the recycling symbol is

applied in other markings or if a recycling symbol does not need to be declared or cannot be

declared.
5.1.2 Lead acid batteries
Figure 1 – Example of marking for lead acid batteries
5.1.3 Nickel cadmium batteries
Figure 2 – Example of marking for nickel cadmium batteries
5.1.4 Nickel metal hydride batteries
Figure 3 – Example of marking for nickel metal hydride batteries
5.1.5 Lithium ion batteries
Figure 4 – Example of marking for lithium ion batteries
5.1.6 Lithium metal batteries
Figure 5 – Example of marking for lithium metal batteries
---------------------- Page: 12 ----------------------
IEC 62902:2019 © IEC 2019 – 11 –
5.2 Optional markings with recycling symbol
5.2.1 General

The markings shown in Figures 6 to 10 with the recycling symbol in accordance with

ISO 7000-1135:2004-01 shall be used in the event that the recycling symbol is still not applied

in other markings and if a recycling symbol needs to be declared.
NOTE The applicability and meaning of the recycling symbol can vary by country.
5.2.2 Lead acid batteries
Figure 6 – Example of marking with recycling symbol
for lead acid batteries
5.2.3 Nickel cadmium batteries
Figure 7 – Example of marking with recycling symbol
for nickel cadmium batteries
5.2.4 Nickel metal hydride batteries
Figure 8 – Example of marking with recycling symbol
for nickel metal hydride batteries
---------------------- Page: 13 ----------------------
– 12 – IEC 62902:2019 © IEC 2019
5.2.5 Lithium ion batteries
Figure 9 – Example of marking with recycling symbol
for lithium ion batteries
5.2.6 Lithium metal batteries
Figure 10 – Example of marking with recycling symbol
for lithium metal batteries
5.3 Background colours

The following colours shall be used for the background and may be used for the label and/or

the casings or sleeves of battery blocks, battery modules, or cells.
a) Pb silver grey, grey, or white
b) Ni-Cd light green
c) Ni-MH orange
d) Li-ion blue
e) Li-metal blue

The background colour of the marking shall be different from the colour of the battery case.

A reference for the specified colours in accordance with established colour systems is listed in

informative Annex A.
5.4 Design of markings and symbols
5.4.1 General

The size of marking is defined by the largest side of the battery. If the battery manufacturer

and the device manufacturer are in agreement, the size of marking can be defined by the

displayed side which is defined in 4.3.
---------------------- Page: 14 ----------------------
IEC 62902:2019 © IEC 2019 – 13 –
5.4.2 Dimensions for symbols
The symbols used for the dimensions of the marking are listed in Table 1.
Table 1 – List of dimensions for symbols
Symbol Definition See
a Width of recycling symbol Figure 13
Figure 11
R Width of the marking Figure 12
Figure 13
h Height of marking without recycl
...

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