EN 60086-3:2011

SLOVENSKI STANDARD
01-maj-2011
1DGRPHãþD
SIST EN 60086-3:2005
Primarne baterije - 3. del: Baterije za zapestne ure (IEC 60086-3:2011)
Primary batteries - Part 3: Watch batteries (IEC 60086-3:2011)
Primärbatterien - Teil 3: Uhrenbatterien (IEC 60086-3:2011)
Piles primaires - Partie 3: Piles pour montres (CEI 60086-3:2011)
Ta slovenski standard je istoveten z: EN 60086-3:2011
ICS:
29.220.10 3ULPDUQLþOHQLLQEDWHULMH 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 60086-3
NORME EUROPÉENNE
March 2011
EUROPÄISCHE NORM
ICS 29.220.10; 39.040.10 Supersedes EN 60086-3:2005

English version
Primary batteries -
Part 3: Watch batteries
(IEC 60086-3:2011)
Piles primaires -  Primärbatterien -
Partie 3: Piles pour montres Teil 3: Uhrenbatterien
(CEI 60086-3:2011) (IEC 60086-3:2011)

This European Standard was approved by CENELEC on 2011-03-02. 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 Central Secretariat 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 Central Secretariat 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60086-3:2011 E
Foreword
The text of document 35/1286/FDIS, future edition 3 of IEC 60086-3, prepared by IEC TC 35, Primary
cells and batteries, and ISO TC 114, Horology, was submitted to the IEC-CENELEC parallel vote and
was approved by CENELEC as EN 60086-3 on 2011-03-02.
This European Standard supersedes EN 60086-3:2005.
The major technical changes with respect to EN 60086-3:2005 are the drawings, a review of the table of
electrochemical systems and a harmonization of the marking clause with the other standards of the
EN 60086 series. Moreover, the table of the leakage levels was extended by adding drawings with better
visualization.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-12-02
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2014-03-02
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60086-3:2011 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60068-2-78:2001 NOTE  Harmonized as EN 60068-2-78:2001 (not modified).
__________
- 3 - EN 60086-3:2011
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

1)
IEC 60086-1 2011 Primary batteries - EN 60086-1 201X
Part 1: General
1)
IEC 60086-2 2011 Primary batteries - EN 60086-2 201X
Part 2: Physical and electrical specifications

IEC 60086-4 2007 Primary batteries - EN 60086-4 2007
Part 4: Safety of lithium batteries

1)
IEC 60086-5 2011 Primary batteries - EN 60086-5 200X
Part 5: Safety of batteries with aqueous
electrolyte
IEC 60410 - Sampling plans and procedures for inspection - -
by attributes
ISO 2859 series Sampling procedures for inspection by - -
attributes
ISO 3951 series Sampling procedures for inspection by - -
variables
1)
To be published.
IEC 60086-3
Edition 3.0 2011-01
INTERNATIONAL
STANDARD
Primary batteries –
Part 3: Watch batteries
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
U
ICS 29.220.10; 39.040.10 ISBN 978-2-88912-330-8

– 2 – 60086-3  IEC:2011(E)
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 . 10
4.3 Projection of the negative terminal (h ) . 10
4.4 Shape of negative terminal . 10
4.5 Mechanical resistance to pressure . 11
4.6 Deformation . 11
4.7 Leakage . 12
4.8 Marking . 12
4.8.1 General . 12
4.8.2 Disposal . 12
5 Electrical requirements . 12
5.1 Electrochemical system, nominal voltage, end-point voltage and open-circuit
voltage . 12
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 . 13
6.1 Sampling . 13
6.1.1 Testing by attributes . 13
6.1.2 Testing by variables . 14
6.2 Product quality indices . 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 . 20
7.3.1 Preconditioning and previous examination . 20
7.3.2 High temperature and humidity test . 21
7.3.3 Test by temperature cycles . 21
8 Visual examination and acceptance conditions . 22
8.1 Preconditioning . 22

60086-3  IEC:2011(E) – 3 –
8.2 Magnification . 22
8.3 Lighting . 22
8.4 Leakage levels and classification . 22
8.5 Acceptance conditions . 24
Annex A (normative) Designation . 25
Bibliography . 26

Figure 1 – Dimensional drawing . 8
Figure 2 – Shape of negative terminal . 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 . 21

Table 1 – Dimensions and size codes . 9
Table 2 – Dimensions and size codes . 10
Table 3 – Minimum values of l . 11
Table 4 – Applied force F by battery dimensions . 11
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 – Discharge resistance (values) . 20
Table 9 – Storage conditions for the recommended test . 21
Table 10 – Storage conditions for optional test . 21
Table 11 – Leakage levels and classification . 23

– 4 – 60086-3  IEC:2011(E)
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 third edition cancels and replaces the second edition (2004) and constitutes a technical
revision.
The major technical changes with respect to the previous edition are the drawings, a review of
the table of electrochemical systems and a harmonization of the marking clause with the other
standards of the IEC 60086 series. Moreover, the table of the leakage levels was extended by
adding drawings with better visualization.
This publication is published as a double logo standard.

60086-3  IEC:2011(E) – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
35/1286/FDIS 35/1289/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table. In ISO, the standard has been approved by 8 P members out of
8 having cast a vote.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60086 series, under the general title: Primary batteries, can be
found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

– 6 – 60086-3  IEC:2011(E)
INTRODUCTION
The technical content of this part of IEC 60086 provides specific requirements and information
for primary watch batteries. This part was prepared through joint work between IEC TC 35
and ISO TC 114 to benefit primary battery users, watch designers and battery manufacturers
by ensuring the best compatibility between batteries and watches.
This part 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 can be found in IEC 60086-4 and IEC 60086-5.

60086-3  IEC:2011(E) – 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 referenced documents are indispensable for the application 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 60086-4:2007, Primary batteries – Part 4: Safety of lithium batteries
IEC 60086-5:- , Primary batteries – Part 5: Safety of batteries with aqueous electrolyte
IEC 60410, Sampling plans and procedures for inspection by attributes
ISO 2859 (all parts), Sampling procedures for inspection by attributes
ISO 3951(all parts as applicable), Sampling procedures for inspection by variables
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60086-1 as well as
the following terms and definitions apply.
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 The SI unit for electric charge is the coulomb (1 C = 1 As) but, in practice, capacity is usually expressed in
ampere hours (Ah).
___________
To be published in 2011.
To be published in 2011.
To be published in 2011.
– 8 – 60086-3  IEC:2011(E)
3.3
fresh battery
undischarged battery 60 days maximum after date of manufacture
3.4
ohmic drop
part of the internal resistance that leads to a voltage drop immediately after switching the load
on
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 Table 2. The dimensions of the batteries shall be tested in accordance with 7.1.
The symbols used to denote the various dimensions in Figure 1 are in accordance with
IEC 60086-2, Clause 4.
Dimensions in millimetres
d
0,05
II   0,1
(–)
(+)
<10
0,05
d
d
≥10
0,1
d
IEC  155/11
Key
h  maximum overall height of the battery
h minimum distance between the flats of the positive and negative contacts
h minimum projection of the flat negative contact
d maximum and minimum diameter of the battery
d minimum diamete
...