Primary batteries - Part 3: Watch batteries (IEC 60086-3:2021)

This part of IEC 60086 specifies dimensions, designation, methods of tests and requirements
for primary batteries for watches. In several cases, a menu of test methods is given. When
presenting battery electrical characteristics and/or performance data, the manufacturer
specifies which test method was used.

Primärbatterien - Teil 3: Uhrenbatterien (IEC 60086-3:2021)

Piles électriques - Partie 3: Piles pour montres (IEC 60086-3:2021)

IEC 60086-3:2021 est disponible sous forme de IEC 60086-3:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

Primarne baterije - 3. del: Baterije za ročne ure (IEC 60086-3:2021)

General Information

Status
Published
Publication Date
20-Jul-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
21-Jun-2021
Due Date
26-Aug-2021
Completion Date
21-Jul-2021

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SLOVENSKI STANDARD
SIST EN IEC 60086-3:2021
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
SIST EN IEC 60086-3:2021 en

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

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SIST EN IEC 60086-3:2021
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SIST EN IEC 60086-3:2021
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
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SIST EN IEC 60086-3:2021
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

EN IEC 60086-3:2021.
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.
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SIST EN IEC 60086-3:2021
EN IEC 60086-3:2021 (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 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
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SIST EN IEC 60086-3:2021
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SIST EN IEC 60086-3:2021
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

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

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SIST EN IEC 60086-3:2021
– 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

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

voltage U (CCV) ......................................................................................... 16

7.2.5 Calculation of the internal resistance R ......................................................... 17

7.2.6 Measurement of the capacity ......................................................................... 17

7.2.7 Calculation of the internal resistance R during discharge in case of

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

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SIST EN IEC 60086-3:2021
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

Table 7 – Test method A for U (CCV) measurement .......................................................... 18

Table 8 – Storage conditions for the recommended test ........................................................ 20

Table 9 – Storage conditions for optional test ....................................................................... 20

Table 10 – Leakage levels and classification ........................................................................ 21

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SIST EN IEC 60086-3:2021
– 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 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 60086-3 has been prepared by IEC technical committee 35: Primary

cells and batteries, and ISO technical committee 114: Horology.

This fifth edition cancels and replaces the fourth edition published in 2016. This edition

constitutes a technical revision.
This publication is published as a double logo standard.

This edition includes the following significant technical changes with respect to the previous

edition:

a) reformatted Table 1 and Table 2. The reformatted tables are now divided by system.

Dimensional tolerances were changed when appropriate. Cell sizes were removed or added

based on the size prevalence in the market place;
were reformatted;
b) in Table 3 the minimum values of l
c) the minimum OCV for the S system in Table 5 was changed to 1,55 V.
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SIST EN IEC 60086-3:2021
IEC 60086-3:2021 © IEC 2021 – 5 –
The text of this International Standard is based on the following documents:
FDIS Report on voting
35/1467/FDIS 35/1470/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.
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/standardsdev/publications.

A list of all parts in the IEC 60086 series, published under the general title Primary batteries,

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.
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SIST EN IEC 60086-3:2021
– 6 – IEC 60086-3:2021 © IEC 2021
INTRODUCTION

This part of IEC 60086 provides specific requirements and information for primary watch

batteries. This part of IEC 60086 was prepared through joint work between the IEC and ISO to

benefit primary battery users, watch designers and battery manufacturers by ensuring the best

compatibility between batteries and watches.

This part of IEC 60086 will remain under continual scrutiny to ensure that the publication is kept

up to date with the advances in both battery and watch technologies.
NOTE Safety information is available in IEC 60086-4 and IEC 60086-5.
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SIST EN IEC 60086-3:2021
IEC 60086-3:2021 © IEC 2021 – 7 –
PRIMARY BATTERIES –
Part 3: Watch batteries
1 Scope

This part of IEC 60086 specifies dimensions, designation, methods of tests and requirements

for primary batteries for watches. In several cases, a menu of test methods is given. When

presenting battery electrical characteristics and/or performance data, the manufacturer

specifies which test method was used.
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 60086-1, Primary batteries – Part 1: General
IEC 60086-2, Primary batteries – Part 2: Physical and electrical specifications
IEC 60086-4, Primary batteries – Part 4: Safety of lithium batteries

IEC 60086-5, Primary batteries – Part 5: Safety of batteries with aqueous electrolyte

3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60086-1 and the

following apply.

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

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
capacitive reactance

part of the internal resistance that leads to a voltage drop during the first seconds under load

3.2
capacity

electric charge (quantity of electricity) which a cell or battery can deliver under specified

discharge conditions

Note 1 to entry: The SI unit for electric charge is the coulomb (1 C = 1 As) but, in practice, capacity is usually

expressed in ampere hours (Ah).
3.3
fresh battery
undischarged battery 60 days maximum after date of manufacture
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SIST EN IEC 60086-3:2021
– 8 – IEC 60086-3:2021 © IEC 2021
3.4
ohmic drop

part of the internal resistance that leads to a voltage drop immediately after switching the load

4 Physical requirements
4.1 Battery dimensions, symbols and size codes

Dimensions and tolerances of batteries for watches shall be in accordance with Figure 1,

Table 1 and T
...

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