EN IEC 60086-3:2021

SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN 60086-3:2016
Primarne baterije - 3. del: Baterije za ročne ure (IEC 60086-3:2021)
Primary batteries - Part 3: Watch batteries (IEC 60086-3:2021)
Primärbatterien - Teil 3: Uhrenbatterien (IEC 60086-3:2021)
Piles électriques - Partie 3: Piles pour montres (IEC 60086-3:2021)
Ta slovenski standard je istoveten z: EN IEC 60086-3:2021
ICS:
29.220.10 Primarni členi in baterije Primary cells and batteries
39.040.10 Zapestne, žepne ure Watches
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60086-3

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2021
ICS 29.220.10; 39.040.10 Supersedes EN 60086-3:2016 and all of its amendments
and corrigenda (if any)
English Version
Primary batteries - Part 3: Watch batteries
(IEC 60086-3:2021)
Piles électriques - Partie 3: Piles pour montres Primärbatterien - Teil 3: Uhrenbatterien
(IEC 60086-3:2021) (IEC 60086-3:2021)
This European Standard was approved by CENELEC on 2021-06-01. 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60086-3:2021 E

European foreword
The text of document 35/1467/FDIS, future edition 5 of IEC 60086-3, prepared by IEC/TC 35 "Primary
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) 2022-03-01
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-06-01
document have to be withdrawn
This document supersedes EN 60086-3:2016 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.
Endorsement notice
The text of the International Standard IEC 60086-3:2021 was approved by CENELEC as a European
Standard without any modification.
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 60086-1 - Primary batteries - Part 1: General EN IEC 60086-1 -
IEC 60086-2 - Primary batteries - Part 2: Physical and EN IEC 60086-2 -
electrical specifications
IEC 60086-4 - Primary batteries - Part 4: Safety of lithium EN IEC 60086-4 -
batteries
IEC 60086-5 - Primary batteries - Part 5: Safety of EN 60086-5 -
batteries with aqueous electrolyte

IEC 60086-3
Edition 5.0 2021-04
INTERNATIONAL
STANDARD
Primary batteries –
Part 3: Watch batteries
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.220.10; 39.040.10 ISBN 978-2-8322-9686-8

– 2 – IEC 60086-3:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Physical requirements . 8
4.1 Battery dimensions, symbols and size codes . 8
4.2 Terminals . 11
4.3 Projection of the negative terminal (h ) . 11
4.4 Shape of battery . 11
4.5 Mechanical resistance to pressure . 12
4.6 Deformation . 12
4.7 Leakage . 12
4.8 Marking . 12
4.8.1 General . 12
4.8.2 Disposal . 13
5 Electrical requirements . 13
5.1 Electrochemical system, nominal voltage, end-point voltage and open-circuit
voltage . 13
5.2 Closed circuit voltage U (CCV), internal resistance and impedance . 13
cc
5.3 Capacity . 13
5.4 Capacity retention . 13
6 Sampling and quality assurance . 14
7 Test methods . 14
7.1 Shape and dimensions . 14
7.1.1 Shape requirement . 14
7.2 Electrical characteristics . 14
7.2.1 Environmental conditions . 14
7.2.2 Equivalent circuit – Effective internal resistance – DC method . 14
7.2.3 Equipment . 15
7.2.4 Measurement of open-circuit voltage U (OCV) and closed circuit
oc
voltage U (CCV) . 16
cc
7.2.5 Calculation of the internal resistance R . 17
i
7.2.6 Measurement of the capacity . 17
7.2.7 Calculation of the internal resistance R during discharge in case of
i
method A (optional) . 19
7.3 Test methods for determining the resistance to leakage . 19
7.3.1 Preconditioning and initial visual examination . 19
7.3.2 High temperature and humidity test . 20
7.3.3 Test by temperature cycles . 20
8 Visual examination and acceptance conditions . 20
8.1 Preconditioning . 20
8.2 Magnification . 21
8.3 Leakage levels and classification . 21
8.4 Acceptance conditions . 22

IEC 60086-3:2021 © IEC 2021 – 3 –
Annex A (normative) Designation . 23
Bibliography . 24

Figure 1 – Dimensional drawing . 8
Figure 2 – Shape of battery. 11
Figure 3 – Shape requirement . 14
Figure 4 – Schematic voltage transient . 15
Figure 5 – Curve: U = f(t) . 16
Figure 6 – Circuitry principle . 16
Figure 7 – Circuitry principle for method A . 18
Figure 8 – Circuitry principle for method B . 19
Figure 9 – Test by temperature cycles . 20

Table 1 – Zinc systems L and S dimensions and size codes . 9
Table 2 – Lithium systems B and C dimensions and size codes . 10
Table 3 – Values of l . 11
Table 4 – Applied force F by battery dimensions . 12
Table 5 – Standardised electrochemical systems . 13
Table 6 – Test method for U (CCV) measurement . 17
cc
Table 7 – Test method A for U (CCV) measurement . 18
cc
Table 8 – Storage conditions for the recommended test . 20
Table 9 – Storage conditions for optional test . 20
Table 10 – Leakage levels and classification . 21

– 4 – IEC 60086-3:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PRIMARY BATTERIES –
Part 3: Watch batteries
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
...