Ltenzierl dutch VDE VERLAG Gran far VARTA Microbattery GmbH‘ Alla Reohta vorbehaltan.
`
`
`
`IEC 62133-2
`
`Edition 1.0 2017—02
`
`INTERNATIONAL
`
`STANDARD
`
`NORME
`
`INTERNATIONALE
`
`polpur
`If‘lSide
`
`Secondary .cells and batteries centaining alkaline Or other non-acid
`electrolytes - Safety requirements for portable sealed secondary cells, and'fbr
`batteries made from them, for use in portable. applications —.
`Part. 2:, Lithium systems
`
`Accumulateurs alcalins et autres accumulateurs a electrolyte non acide —
`Exigenees de sécurité pour les accumulateurs portables étanches, et pour les
`
`batteries qul en sont constituées. destinés a I'utiiisation dans des applications
`portables —
`Partie 2: Systemes au lithium
`
`
`
`IEC62133-2:2017-02(en-fr)
`
`VART 522025 Page 1 of 98
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`VARTA Ex. 2025 Page 1 of 98
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`IPR2020-01212
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`VARTA Ex. 2025 Page 2 of 98
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`VARTA Ex. 2025 Page 2 of 98
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`

`

`Lizenziert duroh VDE VERLAG GmbH fIIIr VARTA MiCrobaltery GmbH. Alle Rechto vorbohalten.
`
` LEI:
`
`IEC 62133-2
`
`Edition 1.0
`
`2017—02
`
`INTERNATIONAL
`
`STANDARD
`
`NORME
`INTERNATIONALE
`
`.W
`
`Secondary cells and batteries containing alkaline or other non-acid
`electrolytes — Safety requirements for portable sealed secondary cells, and for
`
`batteries made from them, for use in portable applications -
`Part 2: Lithium systems
`
`Accumulateurs alcalins et autres accumulateurs a electrolyte non acide —
`Exigences de sécuriié pour les accumulateurs portables étanches, et pour les
`
`batteries qui en sont constituées, destinés a l’utilisation dans des applications
`portables —
`Partie 2: Systemes au lithium
`
`INTERNATIONAL
`ELECTROTECHNICAL
`COMMISSION
`
`COMMISSION
`ELECTROTECI—INIQLJE
`
`NTERNATIONALE
`
`ICS 29220.30
`
`ISBN 9TB—2-3322-3910—0
`
`Warning! Make sure that you obtained this publication irom an authorized distributor.
`
`Attention! Veuillez vous assurer que vous airez obtenu cette publication via un distributeur agree.
`
`E) Registered lrademark 0| Illa InlemaLIurIHl tledrulechnlml Curnnnasmn
`Mwuue (1990569 de lo lemlss‘ion bledroledlnluue Inlemallunala
`
`VARTA Ex. 2025 Page 3 of 98
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`

`

`General safety considerations
`5.1
`General.........
`
`i
`\.
`
`5.2
`5.3
`5.4
`5.5
`
`5.6
`5.6.1
`
`Insulation andwiring........................
`Venting ................................................................................................................. ‘1
`Temperature: voltage and current management.........‘1
`Terminal contacts
`‘1
`
`‘2
`Assembly of cells into batteries........
`General ......................................................................................................... ‘2
`
`\ADDED
`
`01wa
`
`8
`
`
`Lizanziert durch VDE VERLAG Gmbl—l
`
`for VARTA Microbattory Gmbl—l Alla Rschte vorbehalten.
`
`_2_
`
`
`
` EC 62133—22201? (9 EC 2017
`
`CONTENTS
`
`FOREWORD ___________________________________________________________________________________________________________________________ 5
`
`1 Scope7
`a
`
`Normative references _________________________________________________________________________________________
`
`Terms and definitions ______________________________________________________________________________________________________ 7
`Parameter measurement tolerances
`‘
`
`
`
`Design recommendation ................................................................................ ‘2
`5.6.2
`Mechanical protection for cells and components of batteries .......................... ‘3
`5.6.3
`Qualityplan
`5.7
`
`
`Battery safety components .......................................................................
`58
`
`Type test and sample size .............................................................................................
`
`Specific requirements and tests ..................................................................................... ‘4
`
`7.1
`7.1.1
`7.1.2
`7.2
`
`7.2.1
`7.2.2
`7.3
`7.3.1
`7.3.2
`7.3.3
`
`Charging procedures for test purposes‘4
`First procedure .............................................................................................. ‘4
`Second procedure
`‘4
`Intendeduse
`‘5
`
`5
`Continuous charging at constant voltage (cells)
`Case stress at high ambient temperature (battery)......................................... 5
`Reasonablyforeseeable misuse ............................................................................ ‘5
`External short-circuit (cell)........
`‘5
`External short-circuit (battery)...
`‘8
`Free fall ......................................................................................................... ‘6
`
`Thermal abuse (cells) .................................................................................... ‘6
`7.3.4
`Crush (cells) .................................................................................................. ‘7
`7.3.5
`Over—charging of battery ................................................................................ ‘7
`7.3.6
`Forced discharge (cells) ................................................................................ ‘7
`7.3.7
`Mechanical tests (batteries) ........................................................................... ‘8
`7.3.8
`Design evaluation — Forced internal short-circuit (cells) ................................. ‘9
`7.3.9
`Information for safety ..................................................................................................... 21
`8.1 General2‘l
`
`Small cell and battery safetyinformation...............................................................22
`8.2
`9 Marking .22
`
`9.1
`9.2
`9.3
`9.4
`
`22
`Cell marking
`Battery marking23
`Caution for ingestion of small cells and batteries23
`Otherinformation.............................23
`
`19 Packaging and transport...........................23
`
`Annex A (normative) Charging and discharging range of secondary lithium ion cells for
`safeuse24
`
`VARTA Ex. 2025 Page 4 of 98
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`VARTA Ex. 2025 Page 4 of 98
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`

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`Lizenziert duroh VDE VERLAG Gmbl—l for VARTA Micrcbattery Gmbl—l Alla Rsohte vcrbehalten.
`
`lEC 62133—272017 © IEC 2017
`
`— 3 —
`
`A1
`A2
`43
`4.3.1
`43.2
`A4
`441
`
`..24
`General.
`Safety oflithiumionsecondary battery...
`24
`Consideration on charging voltage...24
`General.
`. 24
`Upper lIrnIt charging voltage. 24
`Consideration oftemperature and charging current26
`General ......................................................................................................... 26
`
`442
`443
`444
`445
`446
`45
`4.5.1
`45.2
`45.3
`45.4
`45.5
`45.6
`46
`46.1
`4.6.2
`46.3
`46.4
`46.5
`46.6
`46.7
`46.8
`46.9
`A. 6. 1O
`A 6.11
`
`Recommendedtemperature range ................................................................. 26
`Hightemperature range ................................................................................. 2?
`Low temperature range ............................................................................ 28
`
`Scope of the application of charging current29
`Consideration ofdischarge.......29
`Sample preparation“ 30
`General.
`30
`insertion procedure for nickel paiticleto generate internal short.
`.............30
`Disassembly of charged cell .......................................................................... 31
`Shape ofnickel particle ................................................................................. 31
`Insertion of nickel particle in cylindrical cell31
`insertion of nickel particle in prismatic cell ..................................................... 34
`Experimental procedure of the forced internal short—circuit test36
`Material and tools for preparation of nickel particle........................................36
`Example ofa nickel particle preparation procedure........................................3?
`Positioning (or placement) of a nickel partlcle37
`Damaged separator precaution.38
`Caution for rewinding separator and electrode...............................................38
`Insulation filmfor preventing short-circuit39
`Caution when disassemblingacelk39
`Protective equipmentforsafety“ 39
`Caution in the case of fire during disassembling”
`39
`Caution for the disassembling process and pressingthe electrode core ......... 39
`Recommended specifications for the pressing device” 39
`
`
`
`Annex B (informative) Recommendations to equipment manufacturers and battery
`
`assemblers...
`
`42
`
`AnnexC(informative] Recommendationstothe end—users..................................................43
`
`Annex 3(normative) Measurement oftheinternaiAC resistance for coin cells.,.................44
`D.‘l
`General ................................................................................................................. 44
`D2
`Method ................................................................................................................. 44
`
`
`
`Annex E(informative} Packaging and transport45
`
`Annex : (informative) Component standards references46
`
`Bibliography .......47
`
`Figure 1 — Forced discharge time chart ................................................................................. 18
`
`Figure 2 — Jig tor pressing .................................................................................................... 21
`
`Figure 3 — Ingestion gauge ................................................................................................... 22
`
`Figure 41 — Representation of lithium ion cells operating region for charging...... ...............25
`..30
`Figure 42 — Representation of lithium ion cell operating region for discharging ......
`Figure 43 — Shape of nickel particle ..................................................................................... 31
`
`VARTA Ex. 2025 Page 5 of 98
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`VARTA Ex. 2025 Page 5 of 98
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`
`— 4 —
`
`
`
`
`EC 62133-21201? @ IEC 2017
`
`F'gure A4 — Nickel particle insertion position between positive and negative active
`material coated area of cylindrical cell31
`_|.| 'gure A.5 — Nickel particle insertion position between positive aluminium foil and
`egative active material coated area of cylindrical cell ...............32
`‘n: igure A.6 — Disassembly of cylindrical cell33
`_|.|
`'gure A? — Nickel particle insertion position between positive and negative (active
`aterial} coated area of prismatic cell ................................................................................... 34
`
`negative (active material) coated area of prismatic cell35
`
`q F'gure AB — Nickel particle insertion position between positive aluminium foil and
`
`F'gure A9 — Disassembly of prismatic cells 38
`
`F'gure A10 — Dimensions of a completed nickel particle37
`
`F'gure A11 — Positioning of the nickel particle when it cannot be placed in the
`specifiedarea38
`
`F'gure A12 — Cylindrical cell 38
`
`F'gure A13 — Distance I time ratio of several types of pressing devices ............................ 41
`
`Table1 —Sample size fortype tests ..................................................................................... 14
`
`Tab|e2 —Condition of charging procedure ............................................................................ 15
`Table 3 —Conditions for vibration test ................................................................................... 19
`
`Table 4—Shock parameters ................................................................................................. 19
`
`Table 5 — Ambient temperature for cell test ........................................................................... 20
`
`Table A.1— Examples of operating region charging parameters........_......_......_...._......._........25
`
`Table A2 — Recommended specifications of a pressing devicedlD
`
`Table F.1 —Component standard references £16
`
`VARTA Ex. 2025 Page 6 of 98
`
`VARTA Ex. 2025 Page 6 of 98
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`

`

`
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`fur VARTA Miorobattery GmbH Alle Rouble vorbehalten
`
`lEC 62133—22017 {El lEC 2017
`
`— 5 —
`
`INTERNATIONAL ELECTROTECHNICAL COMMISSION
`
`SECONDARY CELLS AND BATTERIES CONTAINING
`ALKALINE OR OTHER NON-ACID ELECTROLYTES —
`SAFETY REQUIREMENTS FOR PORTABLE SEALED
`SECONDARY CELLS, AND FOR BATTERIES MADE
`FROM THEM. FOR USE IN PORTABLE APPLICATIONS —
`
`Part 2: Lithium systems
`
`FOREWORD
`
`1} The International Electrotechnical Commission (lEC) is a worldwide organization for standardization comprising
`all national electrotechnical committees
`(lEC National Committees). The object of IE:
`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,
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`Technical Reports, Publicly Available Specifications (PAS) and Guides {hereafter
`referred to as "lEC
`Publicationtsl"). Their preparation is entrusted to technical committees; any lEC National Committee interested
`in the subject dealt with may participate in this preparatory work.
`International, governmental and non—
`governmental organlzations liaising with the IEC also participate In this preparation.
`lEC 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 lEC 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 lEC National Committees.
`
`3]
`
`4i
`
`lEC Publications have the form of recommendations for international use and are accepted by lEC National
`Committees in that sense. While all reasonable efforts are made to ensure that the technical content of lEC
`Publications is accurate,
`lEC cannot be held responsible for the way in which they are used or for any
`mlslnterpretation by any end user.
`lEC National Committees undertake to apply lEC Publications
`In order to promote international uniformity.
`transparently to the maximum extent possible in their national and regional publications. Any divergence
`between any lEC Publication and the corresponding national or regional publication shall be clearly Indicated in
`the latter.
`
`5)
`
`lEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
`assessment services and. in some areas. access to IE: marks of conformity. IE0 is not responsible for any
`services carried out by independent certification bodies.
`6} All users should ensure that they have the latest edition otthis publication.
`it No liability shall attach to lEC 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 lEC Publication or any other lEC
`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 lEC Publication may be the subiect of
`patent rights. lEC shall not be held responsible for identifying any or all such patent rights.
`
`International Standard lEC 62133—2 has been prepared by subcommittee 21A: Secondary
`cells and batteries containing alkaline or other non-acid electrolytes. of
`lEC technical
`committee 21: Secondary cells and batteries.
`
`This first edition cancels and replaces the second edition of IEC 62133 published in 2012.
`constitutes a technical revision.
`
`It
`
`includes
`edition
`This
`lEC62133;20‘|2.
`
`the
`
`following
`
`significant
`
`technical
`
`changes with
`
`respect
`
`to
`
`— separation of nickel systems into a separate Part 1
`
`— inclusion of coin cell requirements;
`
`VARTA Ex. 2025 Page 7 of 98
`
`VARTA Ex. 2025 Page 7 of 98
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`

`

`
`Lisenzieit durch VDE VERLAG Gmbl—l
`
`for VARTA Microbattery GmbH Alle Reohie vorbehaiteri.
`
`— 6 —
`
`IEC 52133-22201? (52’) IEC 2017
`
`— update of assembly of cells into batteries (5.6);
`
`— mechanical tests [vibrationr shock] (7' 3 8.1, 7.3.8.2);
`
`— insertion of IEC TR 62914 within the Bibliography
`
`The text of this standard is based on the following documents;
`
`FDlS
`21AIBZDIFDIS
`
`Report on voting
`21NBZEIRVD
`
`Full information on the voting for the approval of this standard can be found in the report on
`voting indicated in the above table.
`
`
`
`This publication has been drafted in accordance with the iSOllEC Directives. 3art 2.
`
`The following different practices of a less permanent nature exist in the countries indicated
`below.
`
`13.9: Design evaluation — Forced internal short-circuit test only applies to litorea= Japan,
`Switzerland and France
`
`
`A list of all parts of the IEC 62133 series, published under the general title Secondary celis
`and batteries containing alkaline or other non-acid electrolytes — Safety requirements for
`portable seated secondary cell's, and for batteries made from them.
`for use in portable
`applications, can be found on the IEC website.
`
`The committee has decided that the contents of this publication will remain unchanged until
`
`the stabilityr date indicated on the IEC website under “httpiltwebstore.iecch" in the data
`related to the specific publication. At this date, the publication will be
`
`-
`
`reconfirmed.
`
`o withdrawn,
`
`I
`-
`
`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
`
`colour printer.
`
`understanding of its contents. Users should therefore print this document using a
`
`VARTA Ex. 2025 Page 8 of 98
`
`VARTA Ex. 2025 Page 8 of 98
`
`

`

`
`Lizenziert durch VDE VERLAG Gmbi—i
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`for VARTA Microbattery GmbH Alle Rechie vorbehalten.
`
`iEC 62133—22017 {fit IEC 2017
`
`— T —
`
`SECONDARY CELLS AND BATTERIES CONTAINING
`ALKALINE OR OTHER NON-ACID ELECTROLYTES —
`SAFETY REQUIREMENTS FOR PORTABLE SEALED
`SECONDARY CELLS, AND FOR BATTERIES MADE
`FROM THEM, FOR USE IN PORTABLE APPLICATIONS —
`
`Part 2: Lithium systems
`
`1
`
`Scope
`
`This part of IEC 62133 specifies requirements and tests for the safe operation of portable
`sealed secondary lithium cells and batteries containing non—acid electrolyte, under intended
`use and reasonably foreseeable misuse.
`
`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.
`
`international Eiectrotechnicai Vocabulary — Part 482' Primary and
`IEC 6005048212004,
`secondary ceiis and batteries (available at httpiiwwwelectrcpediacrg)
`
`iEC 61960. Secondary ceiis and batteries containing aikaiine or other non—acid eiectroiytes —
`Secondary iitnium ceiis and batteries for portable appiications
`
`[SOiIEC Guide 51, Safety aspects — Guidelines for their inciusion in standards
`
`3 Terms and definitions
`
`the terms and definitions given in
`this document]
`the purposes of
`For
`lSOiIEC Guide 51 and the following apply.
`
`lEC 60050—482,
`
`3.1
`safety
`freedom from unacceptable rlsk
`
`3.2
`risk
`
`combination of the probability of occurrence of harm and the severity of that harm
`
`3.3
`harm
`
`physical injury or damage to the health of people or damage to property or to the environment
`
`3.4
`hazard
`potential source of harm
`
`VARTA Ex. 2025 Page 9 of 98
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`VARTA Ex. 2025 Page 9 of 98
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`

`
`Lizenziert durch VDE VERLAG Gmbl—l
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`
`— 8 —
`
`IEC 52133-22201? (9 IEC 201?
`
`3.5
`intended use
`
`use of a product, process or service in accordance with specifications,
`information provided by the supplier
`
`instructions and
`
`3.6
`
`reasonably foreseeable misuse
`use of a product, process or service in a way which is not intended by the supplier, but which
`may result from readily predictable human behaviour
`
`3.?
`secondary cell
`basic manufactured unit providing a source of electrical energy by direct conversion of
`chemical energy, that consists of electrodes, separators, electrolyte, container and terminals,
`and that is designed to be charged electrically
`
`3.8
`secondary battery
`assembly of secondary ceil(s) which may include associated safety and control circuits and
`case, ready for use as a source of electrical energy characterized by its voltage, size, terminal
`arrangement, capacity and rate capability
`
`Note I
`
`to entry:
`
`Includes single cell batteries.
`
`3.9
`leakage
`unplanned, visible escape of liquid electrolyte
`
`3.10
`venting
`release of excessive internal pressure from a cell or battery in a manner intended by design to
`preclude rupture or explosion
`
`3.11
`
`rupture
`mechanical failure of a cell container or battery case induced by an internal or external cause.
`resulting in exposure or spillage but not ejection of materials
`
`3.12
`
`explosion
`cell container or battery case opens violently and major
`failure that occurs when a
`components are forcibly expelled
`
`3.13
`fire
`
`emission of flames from a cell or battery
`
`3.14
`
`portable battery
`battery for use in a device or appliance which is conveniently hand-carried
`
`3.15
`
`portable cell
`cell intended for assembly in a portable battery
`
`3.16
`
`lithium ion polymer cell
`cell using gel polymer electrolyte or solid polymer electrolyte, not lquld electrofyte
`
`VARTA Ex. 2025 Page 10 of 98
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`VARTA Ex. 2025 Page 10 of 98
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`

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`Lizenziert durch VDE VERLAG Gmbl—l
`
`for VARTA Mlcrobattery GmbH Alle Reohle vorbehal‘ten
`
`lEC 62133—272017 {fit lEC 201?
`
`— 9 —
`
`3.1?
`
`rated capacity
`capacity value of a cell or battery determined under specified conditions and declared by the
`manufacturer
`
`the quantity of electricity C; Ah (ampere-hours} declared by the
`to entry; The rated capacity is
`Note 1
`manufacturer which a single cell can deliver when discharged at the reference test current of 0.2 {L A to a specified
`final voltage. after charging. storing and discharging under specified conditions.
`
`[SOURCE lEC 600504822004. 1182-03-15, modified — Note 1 to entry has been added]
`
`3.18
`reference test current
`
`Irt
`charge or discharge current expressed as a multiple of it A. where it A = {75 Ahi’l h, as defined
`in IEC 61434, and based on the rated capacity (C5 Ah) of the cell or battery
`
`3.19
`
`upper limit charging voltage
`highest charging voltage in the cell operating region. which is
`manufacturer
`
`specified by the cell
`
`3-20
`
`maximum charging current
`maximum charging current
`manufacturer
`
`in the cell operating region. which is specified by the cell
`
`3.21
`coin cell
`button cell
`coin battery
`small round cell or battery in which the overall height is less than the diameter
`
`In English, the term 'coin cell‘ or "com battery” is used for lithium batteries only while the term
`to entry:
`Note 1
`"button cell” or "button battery'
`is only used for non—lithium batteries.
`lrt languages other than English. the terms
`"coin' and "button" are often used interchangeably, regardless of the electrochemical system.
`
`
`[SOURCE lEC 600504822004 4182-02—40. modified — The term "coin battery" has been
`added. and the NOTE "In practice terms, the term coin is used exclusively for non-aqueous
`lithium cells." has been replaced with Note 1 to entry.)]
`
`3.22
`
`cylindrical cell
`cell with a cylindrical shape in which the overall height is equal to or greater than the diameter
`
`[SOURCE lEC 60050-4822004. 1482-02-39]
`
`3.23
`prismatic cell
`cell having the shape of a parallelepiped whose faces are rectangular
`
`Note 1 to entry: Prismatic cells may be provided with either a rigid metal case or flexible laminate film case
`
`[SOURCE lEC 600504822004, 4182—02—38. modified The source term ls "prismatic" (adij.
`in the definition. "qualifies a cell or a battery" has been replaced with "cell". Note1 to entry
`has been added]
`
`VARTA Ex. 2025 Page 11 of 98
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`VARTA Ex. 2025 Page 11 of 98
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`

`

`
`Lizenziert durch VDE VERLAG Gmbl—l
`
`for VARTA Microbattery GmbH Alle Reptile vorbehal‘ten.
`
`—10—
`
`IEC 62133—21201? ©|EC 201?
`
`3.24
`cell block
`parallel connection
`arrangement of cells or batteries wherein all
`terminals. respectively. are connected together
`
`the positive terminals and all
`
`the negative
`
`
`[SOURCE iEC 50050—48272004,
`added]
`
`3.25
`
`4812—03—39. modified — The term ”cell block" has been
`
`functional safety
`part of the overall safety that depends on functional and physical units operating correctly in
`response to their inputs
`
`[SOURCEI IEC 60050435112013, 351—57—05]
`
`3.26
`en d-of-dis ch arge voltage
`final voltage
`specified voltage of a battery at which the battery discharge is terminated
`
`[SOURCE IEC 6005041822004, 482—03—30, modified — The terms "cut—off voltage” and "end—
`point voltage" have been deleted]
`
`4 Parameter measurement tolerances
`
`The overall accuracy of controlled or measured values. relative to the specified or actual
`parameters. shall be within these tolerances
`fl!
`
`-- ‘i %
`
`for voltage;
`
`for current;
`
`for temperature;
`
`fortime,‘
`
`for dimension;
`
`for capacity.
`
`+ ‘i %
`i
`—n) : ‘l %
`
`the measuring instruments,
`These tolerances comprise the combined accuracy of
`measurement techniques used, and all other sources of error in the test procedure
`
`the
`
`The details of the instrumentation used shall be provided in any report of results.
`
`5 General safety considerations
`
`5.1 General
`
`The safety of secondary cells and batteries requires the consideration of two sets of applied
`conditions;
`
`1)
`2)
`
`intended use;
`reasonably foreseeable misuse.
`
`Cells and batteries shall be so designed and constructed that they are safe under conditions
`of both intended use and reasonably foreseeable misuse.
`It is expected that cells or batteries
`subjected to misuse may fail
`to function following such experience. They shall not however
`
`VARTA Ex. 2025 Page 12 of 98
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`i )
`
`_ ‘i %
`
`1 : 2 “C
`
`)
`
`-- 0,1 “/9
`
`
`
`U
`
`Ci
`
`0.
`f0
`
`VARTA Ex. 2025 Page 12 of 98
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`

`

`
`leanzieil durch VDE VERLAG Gmbl—l
`
`for VARTA Microbattery GmbH Alla Rouble vorbehalteri.
`
`lEC 62133—27201? {El IEC 2017
`
`— 11 —
`
`It may also be expected that cells and batteries subjected to
`present significant hazards.
`intended use shall not only be safe but shall continue to be functional in all respects.
`
`Potential hazards which are the subject of this document are:
`
`a
`
`-
`
`I
`
`-
`
`-
`
`-
`
`fire,
`
`burstiexplosion.
`
`leakage of cell electrolyte.
`
`venting,
`
`burns from excessively high external temperatures,
`
`rupture of battery case with exposure of internal components.
`
`Conformity with 5.2 to 5.? for cells and batteries other than coin cells: with an internal
`resistance greater than 3 Q,
`is checked by inspection. by the tests of Clauses T, and in
`accordance with the appropriate standard (see Clause 2 and Table '1). The internal resistance
`is to be measured in accordance with Annex D.
`
`5.2
`
`Insulation and wiring
`
`The insulation resistance between the positive terminal and externally exposed metal surfaces
`of the battery excluding electrical contact surfaces shall be not less than 5 Me: at 500 V DC:
`when measured 50 s after applying the voltage.
`
`to withstand the maximum anticipated
`internal wiring and insulation should be sufficient
`current, voltage and temperature requirements. The orientation of wiring should be such that
`adequate clearances and creepage distances are maintained between conductors. The
`mechanical integrity of internal connections should be sufficient to accommodate conditions of
`reasonably foreseeable misuse (Le. solder alone is not considere