Secondary cells and batteries containing alkaline or other non-acid electrolytes - Sealed nickel-metal hydride rechargeable cells and modules for use in industrial applications - Part 2: Safety

IEC-63115-2:2021 specifies designations, tests and requirements for the safe operation of sealed nickel-metal hydride cells and batteries used in industrial applications excluding road vehicles. Since this document covers batteries for various industrial applications, it includes those requirements which are common and minimum to the various applications.

Sekundärzellen und -batterien mit alkalischen oder anderen nicht-säurehaltigen Elektrolyten – Gasdichte Nickel-Metallhydrid-Zellen und -Batterien für den Gebrauch in industriellen Anwendungen – Teil 2: Sicherheit

Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Accumulateurs étanches au nickel-métal hydrure destinés à l'utilisation dans les applications industrielles - Partie 2: Sécurité

L'IEC 63115-2:2021 précise les désignations, les essais et les exigences pour le fonctionnement en sécurité des accumulateurs étanches au nickel-métal hydrure destinés à une utilisation dans les applications industrielles, à l'exception des véhicules routiers. Lorsqu'une Norme internationale IEC spécifiant des conditions d'essai et des exigences pour des éléments destinés à des applications particulières est en contradiction avec le présent document, la publication particulière est appliquée en priorité (par exemple, l'IEC 62675). Le présent document inclut les exigences communes et minimales pour plusieurs applications dans la mesure où il traite des batteries destinées aux différentes applications industrielles.

Sekundarni členi in baterije z alkalnimi ali drugimi nekislinskimi elektroliti - Zatesnjeni nikelj-kovinski hidridni ponovno polnljivi členi in moduli za industrijsko uporabo - 2. del: Varnost

General Information

Status
Published
Publication Date
22-Mar-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
22-Feb-2021
Due Date
29-Apr-2021
Completion Date
23-Mar-2021

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SLOVENSKI STANDARD
SIST EN IEC 63115-2:2021
01-april-2021
Sekundarni členi in baterije z alkalnimi ali drugimi nekislinskimi elektroliti -

Zatesnjeni nikelj-kovinski hidridni ponovno polnljivi členi in moduli za industrijsko

uporabo - 2. del: Varnost

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

nickel-metal hydride rechargeable cells and modules for use in industrial applications -

Part 2: Safety
Ta slovenski standard je istoveten z: EN IEC 63115-2:2021
ICS:
29.220.30 Alkalni sekundarni členi in Alkaline secondary cells and
baterije batteries
SIST EN IEC 63115-2:2021 en

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

---------------------- Page: 1 ----------------------
SIST EN IEC 63115-2:2021
---------------------- Page: 2 ----------------------
SIST EN IEC 63115-2:2021
EUROPEAN STANDARD EN IEC 63115-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2021
ICS 29.220.30
English Version
Secondary cells and batteries containing alkaline or other non-
acid electrolytes - Sealed nickel-metal hydride cells and batteries
for use in industrial applications - Part 2: Safety
(IEC 63115-2:2021)

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

électrolyte non acide - Accumulateurs étanches au nickel- nicht-säurehaltigen Elektrolyten - Gasdichte Nickel-

métal hydrure destinés à l'utilisation dans les applications Metallhydrid-Zellen und -Batterien für den Gebrauch in

industrielles - Partie 2: Sécurité industriellen Anwendungen - Teil 2: Sicherheit

(IEC 63115-2:2021) (IEC 63115-2:2021)

This European Standard was approved by CENELEC on 2021-02-09. 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 63115-2:2021 E
---------------------- Page: 3 ----------------------
SIST EN IEC 63115-2:2021
EN IEC 63115-2:2021 (E)
European foreword

The text of document 21A/735/FDIS, future edition 1 of IEC 63115-2:2021, 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 63115-2:2021.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-11-09

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2024-02-09

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 63115-2:2021 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 60068-2-11 NOTE Harmonized as EN 60068-2-11
IEC 60068-2-60 NOTE Harmonized as EN 60068-2-60
IEC 60529 NOTE Harmonized as EN 60529
IEC 60664-1 NOTE Harmonized as EN IEC 60664-1
IEC 60730-1:2013 NOTE Harmonized as EN 60730-1:2016 (modified)
IEC 60812 NOTE Harmonized as EN IEC 60812
IEC 61025 NOTE Harmonized as EN 61025
IEC 61032:1997 NOTE Harmonized as EN 61032:1998 (not modified)
IEC 61434 NOTE Harmonized as EN 61434
IEC 61508 (series) NOTE Harmonized as EN 61508 (series)
IEC 61511-1 NOTE Harmonized as EN 61511-1
IEC 61513 NOTE Harmonized as EN 61513
IEC 61951-2:2017 NOTE Harmonized as EN 61951-2:2017 (not modified)
IEC 62061 NOTE Harmonized as EN 62061
IEC 62133-1:2017 NOTE Harmonized as EN 62133-1:2017 (not modified)
IEC 62675 NOTE Harmonized as EN 62675
IEC 62933-2-1:2017 NOTE Harmonized as EN IEC 62933-2-1:2018 (not modified)
IEC 62485-2:2010 NOTE Harmonized as EN IEC 62485-2:2018 (not modified)
ISO 9001:2015 NOTE Harmonized as EN ISO 9001:2015 (not modified)
---------------------- Page: 4 ----------------------
SIST EN IEC 63115-2:2021
EN IEC 63115-2:2021 (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 60050-482 - International Electrotechnical Vocabulary - -
- Part 482: Primary and secondary cells
and batteries
IEC 63115-1 2020 Secondary cells and batteries containing EN IEC 63115-1 2020
alkaline or other non-acid electrolytes -
Sealed nickel-metal hydride cells and
batteries for use in industrial applications
- Part 1: Performance
ISO/IEC Guide 51 - Safety aspects - Guidelines for their - -
inclusion in standards
---------------------- Page: 5 ----------------------
SIST EN IEC 63115-2:2021
---------------------- Page: 6 ----------------------
SIST EN IEC 63115-2:2021
IEC 63115-2
Edition 1.0 2021-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Secondary cells and batteries containing alkaline or other non-acid
electrolytes – Sealed nickel-metal hydride cells and batteries for use in
industrial applications –
Part 2: Safety
Accumulateurs alcalins et autres accumulateurs à électrolyte non acide –
Accumulateurs étanches au nickel-métal hydrure destinés à l'utilisation dans
les applications industrielles –
Partie 2: Sécurité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.220.30 ISBN 978-2-8322-9132-0

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 63115-2:2021
– 2 – IEC 63115-2:2021 © IEC 2021
CONTENTS

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

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

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

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

4 Parameter measurement tolerances ................................................................................ 9

5 General safety considerations ....................................................................................... 10

5.1 General ................................................................................................................. 10

5.2 Insulation and wiring ............................................................................................. 10

5.3 Venting ................................................................................................................. 10

5.4 Temperature, voltage and current management .................................................... 10

5.5 Terminal connectors ............................................................................................. 11

5.6 Assembly of cells into batteries ............................................................................. 11

5.7 Quality plan .......................................................................................................... 11

5.8 Type test conditions .............................................................................................. 11

5.9 Test items ............................................................................................................. 11

6 Specific requirements and tests ..................................................................................... 12

6.1 General ................................................................................................................. 12

6.2 Preliminary preparation for test purposes .............................................................. 13

6.3 Insulation .............................................................................................................. 13

6.4 Intended use ......................................................................................................... 13

6.4.1 Vibration ........................................................................................................ 13

6.4.2 Enclosure stress at high ambient temperature ............................................... 14

6.4.3 Temperature cycling ...................................................................................... 14

6.5 Reasonably foreseeable misuse ............................................................................ 15

6.5.1 External short-circuit test ............................................................................... 15

6.5.2 Drop test ....................................................................................................... 15

6.5.3 Mechanical shock (crash hazard) ................................................................... 16

6.5.4 Thermal abuse test ........................................................................................ 16

6.5.5 Crush ............................................................................................................ 16

6.5.6 Low pressure ................................................................................................. 17

6.5.7 Overcharge test ............................................................................................. 17

6.5.8 Reverse charge test....................................................................................... 18

7 Battery system safety (considering functional safety) ..................................................... 18

7.1 Battery management system (BMS) (or battery management unit) –

Requirements for the BMS .................................................................................... 18

7.2 Overheating control (battery system) .................................................................... 19

8 EMC .............................................................................................................................. 20

9 Information for safety ..................................................................................................... 20

10 Marking and designation ................................................................................................ 20

Annex A (informative) Battery system safety (considering functional safety) – General

requirements ......................................................................................................................... 21

Bibliography .......................................................................................................................... 22

Figure 1 – Temperature profile for 6.4.3 – Temperature cycling test ...................................... 15

Figure 2 – Examples of BMS locations and battery system configurations ............................. 19

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SIST EN IEC 63115-2:2021
IEC 63115-2:2021 © IEC 2021 – 3 –

Table 1 – Sample size for type tests ..................................................................................... 12

Table 2 – Level of accessibility test ....................................................................................... 13

Table 3 – Drop test conditions .............................................................................................. 16

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SIST EN IEC 63115-2:2021
– 4 – IEC 63115-2:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SECONDARY CELLS AND BATTERIES CONTAINING
ALKALINE OR OTHER NON-ACID ELECTROLYTES –
SEALED NICKEL-METAL HYDRIDE CELLS AND BATTERIES
FOR USE IN INDUSTRIAL APPLICATIONS –
Part 2: Safety
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 63115-2 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/735/FDIS 21A/743/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: 10 ----------------------
SIST EN IEC 63115-2:2021
IEC 63115-2:2021 © IEC 2021 – 5 –

A list of all parts in the IEC 63115 series, published under the general title Secondary cells and

batteries containing alkaline or other non-acid electrolytes – Sealed nickel-metal hydride cells

and batteries for use in industrial 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.

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.

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SIST EN IEC 63115-2:2021
– 6 – IEC 63115-2:2021 © IEC 2021
SECONDARY CELLS AND BATTERIES CONTAINING
ALKALINE OR OTHER NON-ACID ELECTROLYTES –
SEALED NICKEL-METAL HYDRIDE CELLS AND BATTERIES
FOR USE IN INDUSTRIAL APPLICATIONS –
Part 2: Safety
1 Scope

This document specifies designations, tests and requirements for the safe operation of sealed

nickel-metal hydride cells and batteries used in industrial applications excluding road vehicles.

When an IEC International Standard specifying test conditions and requirements for cells used

in special applications is in conflict with this document, the former takes precedence (e.g.

IEC 62675).

Since this document covers batteries for various industrial applications, it includes those

requirements which are common and minimum to the various applications.
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, International Electrotechnical Vocabulary – Part 482: Primary and secondary

cells and batteries (available at www.electropedia.org)

IEC 63115-1:2020, Secondary cells and batteries containing alkaline or other non-acid

electrolytes – Sealed nickel-metal hydride cells and batteries for use in industrial applications

– Part 1: Performance
ISO/IEC Guide 51, Safety aspects – Guidelines for their inclusion in standards
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60050-482,

IEC 63115-1, ISO/IEC Guide 51, 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
safety
freedom from unacceptable risk
[SOURCE: IEC 60050-903:2013, 903-01-19]
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SIST EN IEC 63115-2:2021
IEC 63115-2:2021 © IEC 2021 – 7 –
3.2
risk

combination of the probability of occurrence of harm and the severity of that harm

[SOURCE: IEC 60050-903:2013, 903-01-07, modified – The note has been omitted.]
3.3
harm

physical injury or damage to the health of people, or damage to property or the environment

[SOURCE: IEC 60050-351:2013, 351-57-02]
3.4
hazard
potential source of harm
[SOURCE: IEC 60050-351:2013, 351-57-01, modified – The note has been omitted.]
3.5
intended use

use of a product, process or service in accordance with the specifications, instructions and

information provided by the supplier

[SOURCE: IEC 60050-903:2013, 903-01-13, modified – The words "specifications" and

"instructions" have been added and "for use" omitted.]
3.6
reasonably foreseeable misuse

use of a product, process or service in a way not intended by the supplier, but which may result

from readily predictable human behaviour
[SOURCE: IEC 60050-903:2013, 903-01-14]
3.7
cell
sealed nickel-metal hydride cell

cell containing a nickel hydroxide compound for the positive electrode, a hydrogen absorbing

alloy for the negative electrode, and potassium hydroxide or other alkaline solution as

electrolyte, and not releasing either gas or liquid when operated within the limits specified by

the manufacturer

Note 1 to entry: A sealed cell may be equipped with a safety device to prevent a dangerously high internal pressure

and is designed to operate during its life in its original sealed state. See IEC 60050-482:2004, 482-05-17.

3.8
cell block

group of cells connected together in parallel configuration with or without protective devices

(e.g. fuse or PTC (positive temperature coefficient)) and monitoring circuitry
3.9
monobloc

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

designed to house an assembly of electrodes, electrolyte, terminals or interconnections and

possible separators

[SOURCE: IEC 60050-482:2004, 482-02-17, modified – "battery" has been omitted from the

term and the note to entry deleted.]
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SIST EN IEC 63115-2:2021
– 8 – IEC 63115-2:2021 © IEC 2021
3.10
module

group of cells connected together either in series and/or parallel configuration with or without

protective devices (e.g. fuse or PTC) and monitoring circuitry
3.11
battery pack

energy storage device comprised of one or more cells, monoblocs or modules electrically

connected

Note 1 to entry: A battery pack may have a monitoring circuitry which provides information (e.g. cell voltage) to a

battery system.
3.12
battery system
battery

system which comprises one or more cells, cell blocks, monoblocs, modules or battery packs

Note 1 to entry: The battery system has a battery management system to cut off current in case of overcharge,

overcurrent, overdischarge, or overheating.

Note 2 to entry: Overdischarge cut off is not mandatory if there is an agreement on this between the cell

manufacturer and the customer.
Note 3 to entry: The battery system may have cooling or heating units.
Note 4 to entry: The battery system may be enclosed in a battery box.
3.13
battery enclosure
enclosure

physical construction which separates the battery or battery system from its external

environment
3.14
battery management system
BMS

electronic system associated with a battery which has functions to cut off in case of overcharge,

overcurrent, overdischarge, and overheating

Note 1 to entry: The BMS monitors and/or manages its state, calculates secondary data, reports that data and/or

controls its environment to influence the battery's safety, performance and/or service life.

Note 2 to entry: The function of the BMS can be assigned to the battery pack or to equipment that uses the battery

(see Figure 2).

Note 3 to entry: The BMS can be divided and it can be found partially in the battery pack and partially on the

equipment that uses the battery (see Figure 2).

Note 4 to entry: The BMS is sometimes also referred to as a BMU (battery management unit).

3.15
final voltage
specified voltage of a battery at which the battery discharge is terminated

[SOURCE: IEC 60050-482:2004, 482-03-30, modified – The synonyms "end-of-discharge

voltage", "cut-off voltage" and "end-point voltage" have been omitted.]
3.16
nominal voltage

suitable approximate value of the voltage used to designate or identify the voltage of a cell or

battery

Note 1 to entry: The nominal voltage of a sealed nickel-metal hydride rechargeable single cell is 1,2 V.

---------------------- Page: 14 ----------------------
SIST EN IEC 63115-2:2021
IEC 63115-2:2021 © IEC 2021 – 9 –

Note 2 to entry: The nominal voltage of a battery of n series connected cells is equal to n times the nominal voltage

of a single cell.

[SOURCE: IEC 60050-482:2004, 482-03-31, modified – The words "the voltage of" have been

added; the notes to entry have been added and the reference to electrochemical systems has

been omitted.]
3.17
rated capacity

capacity value of a cell or battery determined under specified conditions and declared by the

manufacturer

Note 1 to entry: The rated capacity is the quantity of electricity in C Ah (ampere-hours) declared by the

manufacturer which a single cell can deliver when discharged at the reference test current of 0,2 I A to a specified

final voltage, after charging, storing and discharging under specified conditions.

[SOURCE: IEC 60050-482:2004, 482-03-15, modified – "cell" has been added to the definition,

along with a note to entry.]
3.18
explosion

failure that occurs when a cell, module, or monobloc container opens violently as a result of a

sudden increase of pressure and temperature in cell due to exothermic reaction and major

components are forcibly expelled
3.19
rupture

mechanical failure of a cell, monobloc or battery induced by an internal or external cause,

resulting in exposure or spillage but not ejection of materials
3.20
leakage
unplanned, visible escape of liquid electrolyte
[SOURCE: IEC 62133-1:2017, 3.9]
3.21
venting

release of excessive internal pressure from a cell, monobloc or battery in a manner intended

by design to preclude rupture or explosion
4 Parameter measurement tolerances

The overall accuracy of controlled or measured values, relative to the specified or actual values,

shall be within the following tolerances:
a) ± 1 % for voltage;
b) ± 1 % for current;
c) ± 1 % for capacity;
d) ± 2 °C for temperature;
e) ± 0,1 % for time;
f) ± 1 % for dimension.

These tolerances comprise the combined accuracy of the measuring instruments, the

measurement techniques used and all other sources of error in the test procedure.

The details of the instrumentation used shall be provided in each report of results.

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SIST EN IEC 63115-2:2021
– 10 – IEC 63115-2:2021 © IEC 2021
5 General safety considerations
5.1 General

The safety of sealed nickel-metal hydride cells or batteries requires the consideration of two

sets of applied conditions:
a) intended use;
b) reasonably foreseeable misuse.

The manufacturer can use "cell block(s) or monobloc(s)" instead of "cell(s)" for any test that

specifies "cell(s)". The manufacturer can use "battery pack" instead of "battery" as the test unit

in this document. The cell manufacturer shall clearly declare the test unit for each test.

Cells or batteries shall be so designed and constructed that they are safe under conditions of

both intended use and reasonably foreseeable misuse. It may also be expected that cells or

batteries subjected to intended use shall not only be safe but shall continue to be functional in

all respects.

It is expected that cells or batteries subjected to misuse may fail to function. However, even if

such a situation occurs, they shall not present any significant hazards.
Potential hazards which are the subject of this document are:
a) fire,
b) explosion,
c) electrical shock hazards,
d) venting (such as H gas),

e) rupture of the casing of a cell or battery with exposure of internal components,

f) leakage.
5.2 Insulation and wiring

The insulation resistance between the positive terminal and externally exposed electrically

active surfaces of the battery shall protect against shock hazard.

Internal wiring and insulation should be sufficient to withstand the maximum anticipated current,

voltage and temperature requirements. The orientation of wiring should be such that adequate

clearances a
...

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