Secondary cells and batteries containing alkaline or other non-acid electrolytes - Secondary lithium cells and batteries for portable applications - Part 4: Coin secondary lithium cells, and batteries made from them

IEC 61960-4:2020 specifies performance tests, designations, markings, dimensions and other requirements for coin secondary lithium cells and batteries for portable applications and backup power supply such as memory backup applications. The objective of this document is to provide the purchasers and users of coin secondary lithium cells and batteries with a set of criteria with which they can assess the performance of coin secondary lithium cells and batteries offered by various manufacturers. This document defines a minimum required level of performance and a standardized methodology by which testing is performed and the results of this testing reported to the user. Hence, users will be able to establish the viability of commercially available cells and batteries via the declared specification and thus be able to select the cell or battery best suited for their intended application. This document covers coin secondary lithium cells and batteries with a range of chemistries. Each electrochemical couple has a characteristic voltage range over which, during discharge, it releases its electrical capacity, a characteristic nominal voltage and a characteristic end-of-discharge voltage. Users of coin secondary lithium cells and batteries are requested to consult the manufacturer for advice. This document also provides guidelines for designers of equipment using lithium batteries.

Sekundärzellen und -batterien mit alkalischen oder anderen nicht-säurehaltigen Elektrolyten - Sekundäre Lithiumzellen und -batterien für tragbare Anwendungen - Teil 4: Sekundäre Lithium-Knopfzellen und daraus hergestellte Batterien

Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Accumulateurs au lithium pour applications portables - Partie 4: Éléments et batteries d’accumulateurs boutons au lithium

L'IEC 61960-4:2020 spécifie les essais de performance, les désignations, les marquages, les dimensions et autres exigences pour les éléments et batteries d'accumulateurs boutons au lithium destinés aux applications portables et d'alimentation de secours telles que les applications de sauvegarde de mémoire. L'objectif du présent document est de fournir aux acheteurs et aux utilisateurs d'éléments et batteries d'accumulateurs boutons au lithium un ensemble de critères au moyen desquels ils peuvent évaluer la performance des différents accumulateurs de ce type proposés par différents fabricants. Le présent document définit un niveau d'exigence minimale de performance et une méthodologie normalisée par laquelle sont réalisés les essais dont les résultats sont mis à la disposition de l'utilisateur. Les utilisateurs sont alors en mesure d'apprécier par eux-mêmes la viabilité des accumulateurs disponibles dans le commerce au moyen de la spécification déclarée et donc de sélectionner l'élément ou la batterie le ou la mieux adapté(e) à l'application prévue. Le présent document concerne les éléments et batteries d'accumulateurs boutons au lithium dans une large gamme de couples électrochimiques. Chaque couple électrochimique possède une plage de tension caractéristique dans laquelle il restitue, en décharge, sa capacité emmagasinée, une tension nominale caractéristique et une tension de fin de décharge caractéristique. Il est demandé aux utilisateurs d'éléments et batteries d'accumulateurs boutons au lithium de prendre conseil auprès du fabricant. Le présent document fournit également des lignes directrices pour les concepteurs d'équipements utilisant des batteries au lithium.

Sekundarni členi in baterije, ki vsebujejo alkalne ali druge nekislinske elektrolite - Sekundarni litijevi členi in baterije za prenosne naprave - 4. del: Gumbni litijevi sekundarni členi in baterije

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Status
Published
Current Stage
6060 - Document made available
Due Date
05-Jun-2020
Completion Date
05-Jun-2020

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SLOVENSKI STANDARD
SIST EN IEC 61960-4:2020
01-oktober-2020

Sekundarni členi in baterije, ki vsebujejo alkalne ali druge nekislinske elektrolite -

Sekundarni litijevi členi in baterije za prenosne naprave - 4. del: Gumbni litijevi

sekundarni členi in baterije

Secondary cells and batteries containing alkaline or other non-acid electrolytes -

Secondary lithium cells and batteries for portable applications - Part 4: Coin types

(button) lithium secondary cells and batteries
Ta slovenski standard je istoveten z: EN IEC 61960-4:2020
ICS:
29.220.30 Alkalni sekundarni členi in Alkaline secondary cells and
baterije batteries
SIST EN IEC 61960-4:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN IEC 61960-4:2020
---------------------- Page: 2 ----------------------
SIST EN IEC 61960-4:2020
EUROPEAN STANDARD EN IEC 61960-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 29.220.99
English Version
Secondary cells and batteries containing alkaline or other non-
acid electrolytes - Secondary lithium cells and batteries for
portable applications - Part 4: Coin secondary lithium cells, and
batteries made from them
(IEC 61960-4:2020)

Accumulateurs alcalins et autres accumulateurs à Sekundärzellen und -batterien mit alkalischen oder anderen

électrolyte non acide - Accumulateurs au lithium pour nichtsäurehaltigen Elektrolyten - Sekundäre Lithiumzellen

applications portables - Partie 4: Éléments et batteries und -batterien für tragbare Anwendungen - Teil 4:

d'accumulateurs boutons au lithium Sekundäre Lithiumknopfzellen und daraus hergestellte

(IEC 61960-4:2020) Batterien
(IEC 61960-4:2020)

This European Standard was approved by CENELEC on 2020-05-25. 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,

Turkey 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

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 61960-4:2020 E
---------------------- Page: 3 ----------------------
SIST EN IEC 61960-4:2020
EN IEC 61960-4:2020 (E)
European foreword

The text of document 21A/725/FDIS, future edition 1 of IEC 61960-4, prepared by SC 21A "Secondary

cells and batteries containing alkaline or other non-acid electrolytes" of IEC/TC 21 "Secondary cells

and batteries" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as

EN IEC 61960-4:2020.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-02-25

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-05-25

document have to be withdrawn

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.

Endorsement notice

The text of the International Standard IEC 61960-4:2020 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 standards

indicated:
IEC 60051 (series) NOTE Harmonized as EN 60051 (series)
IEC 60086-1 NOTE Harmonized as EN 60086-1
IEC 60086-2 NOTE Harmonized as EN 60086-2
IEC 60086-3 NOTE Harmonized as EN 60086-3
IEC 60086-4:2019 NOTE Harmonized as EN IEC 60086-4:2019 (not modified)
IEC 61434 NOTE Harmonized as EN 61434
IEC 61959 NOTE Harmonized as EN 61959
IEC 61960-3 NOTE Harmonized as EN 61960-3
IEC 62133 (series) NOTE Harmonized as EN 62133 (series)
IEC 62281 NOTE Harmonized as EN IEC 62281
IEC 62368-1 NOTE Harmonized as EN IEC 62368-1
---------------------- Page: 4 ----------------------
SIST EN IEC 61960-4:2020
EN IEC 61960-4:2020 (E)
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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050-482 2004 International Electrotechnical Vocabulary - - -
Part 482: Primary and secondary cells and
batteries
IEC 62133-2 2017 Secondary cells and batteries containing EN 62133-2 2017
alkaline or other non-acid electrolytes - Safety
requirements for portable sealed secondary
lithium cells, and for batteries made from
them, for use in portable applications - Part 2:
Lithium systems
---------------------- Page: 5 ----------------------
SIST EN IEC 61960-4:2020
---------------------- Page: 6 ----------------------
SIST EN IEC 61960-4:2020
IEC 61960-4
Edition 1.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE

Secondary cells and batteries containing alkaline or other non-acid electrolytes –

Secondary lithium cells and batteries for portable applications –
Part 4: Coin secondary lithium cells, and batteries made from them
Accumulateurs alcalins et autres accumulateurs à électrolyte non acide –
Accumulateurs au lithium pour applications portables –
Partie 4: Éléments et batteries d'accumulateurs boutons au lithium
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.220.99 ISBN 978-2-8322-8069-0

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: 7 ----------------------
SIST EN IEC 61960-4:2020
– 2 – IEC 61960-4:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope .............................................................................................................................. 5

2 Normative references ...................................................................................................... 5

3 Terms and definitions ...................................................................................................... 5

4 Parameter measurement tolerances ................................................................................ 7

5 Cell designation and marking ........................................................................................... 7

5.1 Cell designation ...................................................................................................... 7

5.2 Marking ................................................................................................................... 9

5.2.1 General ........................................................................................................... 9

5.2.2 Small cells or batteries .................................................................................... 9

6 Electrical tests ................................................................................................................. 9

6.1 General ................................................................................................................... 9

6.2 Charging procedure for test purposes ................................................................... 10

6.3 Discharge performance ......................................................................................... 11

6.4 Charge (capacity) recovery after long-term storage ............................................... 12

6.5 Endurance in cycles .............................................................................................. 12

6.6 Cell or battery internal resistance (AC resistance) ................................................. 13

6.6.1 General ......................................................................................................... 13

6.6.2 Test – General ............................................................................................... 13

6.6.3 Measurement ................................................................................................. 13

6.6.4 Acceptance criterion ...................................................................................... 14

7 Differentiation ................................................................................................................ 14

Annex A (informative) Guidelines for designers of equipment using lithium batteries ............ 15

Bibliography .......................................................................................................................... 16

Figure 1 – Dimensional characteristics .................................................................................... 8

Figure 2 – Sample sizes and sequence of tests .................................................................... 10

Table 1 – Electrochemical systems in current practical use ..................................................... 8

Table 2 – Examples of recommended upper limit charge voltage .......................................... 11

Table 3 – Recommended end-of-discharge voltage limit ....................................................... 11

Table 4 – Minimum number of cycles .................................................................................... 13

Table A.1 – Equipment design guidelines .............................................................................. 15

---------------------- Page: 8 ----------------------
SIST EN IEC 61960-4:2020
IEC 61960-4:2020 © IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SECONDARY CELLS AND BATTERIES CONTAINING ALKALINE OR
OTHER NON-ACID ELECTROLYTES – SECONDARY LITHIUM CELLS
AND BATTERIES FOR PORTABLE APPLICATIONS –
Part 4: Coin secondary lithium cells, and batteries made from them
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 61960-4 has been prepared by subcommittee 21A: Secondary cells

and batteries containing alkaline or other non-acid electrolytes, of IEC technical committee 21:

Secondary cells and batteries.
The text of this International Standard is based on the following documents:
FDIS Report on voting
21A/725/FDIS 21A/726/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: 9 ----------------------
SIST EN IEC 61960-4:2020
– 4 – IEC 61960-4:2020 © IEC 2020

A list of all parts in the IEC 61960 series, published under the general title Secondary cells and

batteries containing alkaline or other non-acid electrolytes – Secondary lithium cells and

batteries for portable applications, can be found on the IEC website.

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.
---------------------- Page: 10 ----------------------
SIST EN IEC 61960-4:2020
IEC 61960-4:2020 © IEC 2020 – 5 –
SECONDARY CELLS AND BATTERIES CONTAINING ALKALINE OR
OTHER NON-ACID ELECTROLYTES – SECONDARY LITHIUM CELLS
AND BATTERIES FOR PORTABLE APPLICATIONS –
Part 4: Coin secondary lithium cells, and batteries made from them
1 Scope

This part of IEC 61960 specifies performance tests, designations, markings, dimensions and

other requirements for coin secondary lithium cells and batteries for portable applications and

backup power supply such as memory backup applications.

The objective of this document is to provide the purchasers and users of coin secondary lithium

cells and batteries with a set of criteria with which they can assess the performance of coin

secondary lithium cells and batteries offered by various manufacturers.
This document defines a minimum required level of performance and a standardized

methodology by which testing is performed and the results of this testing reported to the user.

Hence, users will be able to establish the viability of commercially available cells and batteries

via the declared specification and thus be able to select the cell or battery best suited for their

intended application.

This document covers coin secondary lithium cells and batteries with a range of chemistries.

Each electrochemical couple has a characteristic voltage range over which, during discharge,

it releases its electrical capacity, a characteristic nominal voltage and a characteristic end-of-

discharge voltage. Users of coin secondary lithium cells and batteries are requested to consult

the manufacturer for advice.

This document also provides guidelines for designers of equipment using lithium batteries (see

Annex A).
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 60050-482:2004, International Electrotechnical Vocabulary (IEV) – Part 482: Primary and

secondary cells and batteries
IEC 62133-2:2017, Secondary cells and batteries c
...

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