Secondary cells and batteries containing alkaline or other non-acid electrolytes - Vented nickel-cadmium prismatic rechargeable single cells

NEW!IEC 60623:2017 is available as IEC 60623:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60623:2017 specifies marking, designation, dimensions, tests and requirements for vented nickel-cadmium prismatic secondary single cells. When there exists an IEC standard specifying test conditions and requirements for cells used in special applications and which is in conflict with this document, the former takes precedence. This edition includes the following significant technical changes with respect to the previous edition: - optional characterization of cells designed for performances at very low and/or very high temperature; - optional characterization of cells tested with CCCV charge; - optional characterization of cells designed for rapid charge; - optional characterization of cells designed for high cycling.

Akkumulatoren und Batterien mit alkalischen oder anderen nicht-säurehaltigen Elektrolyten - Geschlossene prismatische wiederaufladbare Nickel-Cadmium-Einzelzellen

Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Eléments individuels parallélépipédiques rechargeables ouverts au nickel-cadmium

NEW!IEC 60623:2017 est disponible sous forme de IEC 60623:2017 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 60623:2017 spécifie le marquage, la désignation, les dimensions, les essais et les exigences applicables aux éléments individuels parallélépipédiques rechargeables, ouverts, au nickel-cadmium. En cas d'existence d'une norme IEC spécifiant des conditions d'essai et des exigences pour des éléments destinés à des applications particulières, et qui serait en contradiction avec le présent document, la publication particulière est appliquée en priorité. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - caractérisation facultative d'éléments conçus pour des performances à très basse et/ou très haute température; - caractérisation facultative d'éléments soumis aux essais avec des charges CCCV; - caractérisation facultative d'éléments conçus pour une charge rapide; - caractérisation facultative d'éléments conçus pour des cyclages élevés.

Sekundarni členi in baterije z alkalnimi ali drugimi nekislinskimi elektroliti - Oddušni nikelj-kadmijevi prizmatični polnljivi enojni členi

Standard IEC 60623 določa označevanje, poimenovanje, dimenzije, preskuse in zahteve za oddušne nikelj-kadmijeve prizmatične polnljive enojne člene.
OPOMBA: V tem kontekstu se izraz »prizmatičen« nanaša na člene s pravokotnimi stranicami in osnovo.
Če obstaja standard IEC, ki določa preskusne pogoje in zahteve za člene za posebno uporabo ter je v nasprotju s tem dokumentom, ima prednost prvi.

General Information

Status
Published
Publication Date
04-May-2017
Current Stage
6060 - Document made available
Due Date
05-May-2017
Completion Date
05-May-2017

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Akkumulatoren und Batterien mit alkalischem oder anderem nicht-säurehaltigen Elektrolyten - Geschlossene prismatische wiederaufladbare Nickel-Cadmium-EinzelzellenAccumulateurs alcalins ou autres accumulateurs à électrolyte non acide - Eléments individuels parallélépipédiques rechargeables ouverts au nickel-cadmiumSecondary cells and batteries containing alkaline or other non-acid electrolytes - Vented nickel-cadmium prismatic rechargeable single cells29.220.30EDWHULMHAlkaline secondary cells and batteriesICS:Ta slovenski standard je istoveten z:EN 60623:2017SIST EN 60623:2017en01-julij-2017SIST EN 60623:2017SLOVENSKI

STANDARDSIST EN 60623:20021DGRPHãþD
SIST EN 60623:2017
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 60623
May 2017 ICS 29.220.99
Supersedes
EN 60623:2001
English Version

Secondary cells and batteries containing alkaline or other non-acid electrolytes - Vented nickel-cadmium prismatic rechargeable single cells (IEC 60623:2017)

Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Eléments individuels parallélépipédiques rechargeables ouverts au nickel-cadmium (IEC 60623:2017)

Akkumulatoren und Batterien mit alkalischen oder anderen nicht-säurehaltigen Elektrolyten - Geschlossene prismatische wiederaufladbare Nickel-Cadmium-Einzelzellen (IEC 60623:2017) This European Standard was approved by CENELEC on 2017-02-27. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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: Avenue Marnix 17,

B-1000 Brussels © 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 60623:2017 E SIST EN 60623:2017

EN 60623:2017 2 European foreword The text of document 21A/610/FDIS, future edition 5 of IEC 60623, 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 60623:2017.

The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2017-11-27 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2020-02-27

This document supersedes EN 60623:2001.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60623:2017 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 60051 (series) NOTE Harmonized as EN 60051 (series). IEC 61434 NOTE Harmonized as EN 61434.

SIST EN 60623:2017
EN 60623:2017 3
Annex ZA (normative)

Normative references to international publications with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When 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 2004

International Electrotechnical Vocabulary (IEV) -- Part 482: Primary and secondary cells and batteries - -

IEC 60417 -

Graphical symbols for use on equipment. Index, survey and compilation of the single sheets. - -

SIST EN 60623:2017
SIST EN 60623:2017

IEC 60623 Edition 5.0 2017-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Secondary cells and batteries containing alkaline or other non-acid

electrolytes – Vented nickel-cadmium prismatic rechargeable single cells

Accumulateurs alcalins ou autres accumulateurs à électrolyte non acide – Éléments individuels parallélépipédiques rechargeables ouverts au nickel-cadmium

INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE

ICS 29.220.99
ISBN 978-2-8322-3788-5
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale ®

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. SIST EN 60623:2017

– 2 – IEC 60623:2017  IEC 2017 CONTENTS FOREWORD ........................................................................................................................... 4 1 Scope .............................................................................................................................. 6 2 Normative references ...................................................................................................... 6 3 Terms and definitions ...................................................................................................... 6 4 Parameter measurement tolerances ................................................................................ 7 5 Designation and marking ................................................................................................. 7 5.1 Cell designation (mandatory) .................................................................................. 7 5.2 Cell designation (optional) ...................................................................................... 8 5.3 Cell termination ....................................................................................................... 8 5.4 Marking ................................................................................................................... 8 5.5 Safety recommendations ......................................................................................... 8 6 Dimensions...................................................................................................................... 9 7 Electrical tests ............................................................................................................... 10 7.1 General ................................................................................................................. 10 7.2 Charging procedure for test purposes ................................................................... 10 7.2.1 General ......................................................................................................... 10 7.2.2 Charge procedure based on constant current ................................................ 11 7.2.3 Charge procedure based on constant voltage at a given current .................... 11 7.2.4 Rapid charge current ..................................................................................... 11 7.3 Discharge performances ....................................................................................... 11 7.3.1 General ......................................................................................................... 11 7.3.2 Discharge performance at 20 °C .................................................................... 11 7.3.3 Discharge performance at +5 °C .................................................................... 12 7.3.4 Discharge performance at –18 °C .................................................................. 13 7.3.5 Discharge performance at low temperature .................................................... 13 7.3.6 Discharge performance at high temperature .................................................. 14 7.3.7 High rate current test ..................................................................................... 15 7.4 Charge retention ................................................................................................... 16 7.5 Endurance ............................................................................................................ 16 7.5.1 Test conditions .............................................................................................. 16 7.5.2 Endurance in cycles....................................................................................... 16 7.6 Charge acceptance at constant voltage ................................................................. 17 7.7 Vent plug operation ............................................................................................... 18 7.8 Electrolyte retention test ....................................................................................... 18 7.8.1 General ......................................................................................................... 18 7.8.2 Test procedure .............................................................................................. 18 7.8.3 Acceptance criteria ........................................................................................ 18 7.9 Storage ................................................................................................................. 18 8 Mechanical tests ............................................................................................................ 18 9 Physical appearance ..................................................................................................... 18 10 Conditions for approval and acceptance ........................................................................ 19 10.1 Type approval ....................................................................................................... 19 10.2 Batch acceptance ................................................................................................. 19 Annex A (normative)

CCCV charge methodology ................................................................. 21 Bibliography .......................................................................................................................... 24 SIST EN 60623:2017

IEC 60623:2017  IEC 2017 – 3 –
Figure 1 – Example of a vented prismatic cell in steel container
with two terminals

and four lugs ........................................................................................................................... 9 Figure A.1 – Overview of charging characteristic of Ni-Cd ..................................................... 22

Table 1 – Dimensions for vented nickel-cadmium

prismatic cells in steel containers .............. 9 Table 2 – Dimensions for vented nickel-cadmium

prismatic cells in plastic containers .......... 10 Table 3 – Measurement tolerances in millimetres

(valid for widths and lengths) ................... 10 Table 4 – Maximum values for rapid charge current R ........................................................... 11 Table 5 – Discharge performance at 20 °C ............................................................................ 12 Table 6 – Discharge performance at +5 °C ............................................................................ 12 Table 7 – Discharge performance at –18 °C .......................................................................... 13 Table 8 – Discharge performance at low temperature ........................................................... 14 Table 9 – Discharge performance at high temperature .......................................................... 15 Table 10 – High currents values ............................................................................................ 15 Table 11 – Endurance in cycles ............................................................................................ 16 Table 12 – Constant voltage charging conditions .................................................................. 17 Table 13 – Charge time......................................................................................................... 17 Table 14 – Sequence of tests for type approval .................................................................... 19 Table 15 – Recommended test sequence for batch acceptance ............................................ 20 Table A.1 – Ni-Cd batteries charging characteristics ............................................................. 22

SIST EN 60623:2017

– 4 – IEC 60623:2017  IEC 2017 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________

SECONDARY CELLS AND BATTERIES CONTAINING
ALKALINE OR OTHER NON-ACID ELECTROLYTES –
VENTED NICKEL-CADMIUM PRISMATIC RECHARGEABLE SINGLE CELLS

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 60623 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. This fifth edition cancels and replaces the fourth edition published in 2001 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:

– optional characterization of cells designed for performances at very low and/or very high temperature; – optional characterization of cells tested with CCCV charge; – optional characterization of cells designed for rapid charge; – optional characterization of cells designed for high cycling. SIST EN 60623:2017

IEC 60623:2017  IEC 2017 – 5 –

The text of this standard is based on the following documents: FDIS Report on voting 21A/610/FDIS 21A/621/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. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website 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.
SIST EN 60623:2017
– 6 – IEC 60623:2017  IEC 2017 SECONDARY CELLS AND BATTERIES CONTAINING
ALKALINE OR OTHER NON-ACID ELECTROLYTES –
VENTED NICKEL-CADMIUM PRISMATIC RECHARGEABLE SINGLE CELLS

1 Scope IEC 60623 specifies marking, designation, dimensions, tests and requirements for vented nickel-cadmium prismatic secondary single cells. NOTE In this context, "prismatic" refers to cells having rectangular sides and base. When there exists an IEC standard specifying test conditions and requirements for cells used in special applications and which is in conflict with this document, the former takes precedence. 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 60050-482:2004, International Electrotechnical Vocabulary – Part 482: Primary and secondary cells and batteries IEC 60417, Graphical symbols for use on equipment (available from: http://www.graphical-symbols.info/equipment) 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-482 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

vented cell secondary cell having a cover provided with an opening through which products of electrolysis and evaporation are allowed to escape freely from the cell to the atmosphere Note 1 to entry: The opening may be fitted with a venting system. 3.2

nominal voltage suitable approximate value of the voltage used to designate or identify a cell or a battery Note 1 to entry: The nominal voltage of a vented nickel-cadmium rechargeable single cell is 1,2 V. 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. SIST EN 60623:2017

IEC 60623:2017  IEC 2017 – 7 –

[SOURCE: IEC 60050-482:2004, 482-03-31, modified – Replacement of the words "a battery or an electrochemincal system" by" "or a battery" and addition of Notes 1 and 2 to entry.] 3.3

discharge voltage closed circuit voltage DEPRECATED: on load voltage voltage between the terminals of a cell or battery when being discharged [SOURCE: IEC 60050-482:2004, 482-03-28] 3.4

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 C5 Ah (ampere-hours) declared by the manufacturer which a single cell can deliver during a 5 h period when charging, storing and discharging under the conditions specified in 7.3.2. [SOURCE: IEC 60050-482:2004, 482-03-15, modified – Addition of the words "a cell or" in the definition, and of Note 1 to entry.] 3.5

CCCV charge method of charge consisting in a charge at Constant Current followed by a charge at Constant Voltage 4 Parameter measurement tolerances The overall accuracy of controlled or measured values, relative to the specified or actual values, shall be within these tolerances: a) ±1 % for voltage; b) ±1 % for current; c) ±2 °C for temperature; d) ±0,1 % for time; e) ±1 % for capacity. 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 any report of results. 5 Designation and marking 5.1 Cell designation (mandatory) Vented nickel-cadmium prismatic secondary single cells shall be designated by the letter "K" followed by a letter L, M, H or X which signifies: – low rate of discharge (L); – medium rate of discharge (M); – high rate of discharge (H); – very high rate of discharge (X). SIST EN 60623:2017

– 8 – IEC 60623:2017  IEC 2017 NOTE 1 These types of cells are typically but not exclusively used for the following discharge rates: – L up to 0,5 It A; – M up to 3,5 It A; – H up to 7,0 It A; – X up to and above 7,0 It A. NOTE 2 These currents are expressed as multiples of It A, where It A = C5 Ah/1 h (see IEC 61434). This group of two letters shall be followed by a group of figures indicative of the rated capacity of the cell in ampere-hours. Cells that have been tested at 20 °C and 5 °C but not at –18 °C shall carry an additional marking of T5: for example: KH 185 or KH 185 T5.

Cells in cases of plastic material shall be designated by the letter "P" after the figures: for example: KH 185 P. 5.2 Cell designation (optional) The additional marking shall be added to the mandatory marking. When the marking would exceed the available space on the cell, this information may be omitted on the cell but shall be provided in the documentation corresponding to the cell and in the type test report. If there is no mention concerning the marking for temperature, the cells shall have been tested at: –18 °C, 5 °C and 20 °C. Cells tested at other temperatures shall carry an additional marking of T followed by tested temperatures. In case the cell is characterized with both low and high temperature, they shall be indicated in increasing order with a solidus separating them: for example: KH 185 P T-35/+45. Cells tested with CCCV charges shall carry the marking of CCCV: for example, KH 185 P CCCV. Cells tested at rapid charge shall carry the marking R and the value of the tested rapid charge current, expressed in multiple of It A: for example, KH 185 P R1. High grade cycling cells shall carry an additional marking C followed by the number of cycles: for example, KH 185 P C1500. Cells having been tested with multiple types of tests shall carry the marking for the various tests performed: for example KH 185 P T-35/+45 CCCV R1 C1500. 5.3 Cell termination This document does not specify cell termination. 5.4 Marking Each cell or monobloc shall carry durable markings giving the following minimum information: • type of cell (designation as specified in 5.1 and 5.2; in addition, it is permissible for a manufacturer to use his own type designation); • name or identification of manufacturer or supplier; • positive terminal: either a red washer or an indented or raised symbol (see graphical symbol IEC 60417-5005:2002-10). 5.5 Safety recommendations The manufacturer shall provide recommendations for the safe handling of the cell. See also IEC TR 61438. SIST EN 60623:2017

IEC 60623:2017  IEC 2017 – 9 –

6 Dimensions Dimensions of cells, shown in Figure 1, are given in Tables 1 and 2.

NOTE 1 Cells in steel container can have two or more terminals and four or more lugs. NOTE 2 Cells in plastic container can have two or more terminals and no lugs. Figure 1 – Example of a vented prismatic cell in steel container

with two terminals and four lugs Table 1 – Dimensions for vented nickel-cadmium

prismatic cells in steel containers Width, b Maximum height, h Lengths, d mm mm mm 81 291 83 105 350 91, 130 131 409 36, 50, 56, 66, 78, 94 148 409 52, 76, 100 157 409 66, 84, 95, 116, 134, 143, 147, 166, 200, 225, 242, 410 188 409 128

Lug d b h IEC SIST EN 60623:2017
– 10 – IEC 60623:2017  IEC 2017 Table 2 – Dimensions for vented nickel-cadmium

prismatic cells in plastic containers Width, b Maximum height, h Lengths, d mm mm mm 62 178 28 78 285 50 81 241 28, 36, 43, 48 87 273 47, 86 123 273 28, 40, 50, 61 138 406 48, 55, 61, 70, 77, 85, 105, 115, 265 147 285 53, 78, 102 165 406 42, 66, 75, 105, 110, 130, 160 173 375 122, 197, 287, 392, 517 195 406 29, 34, 40, 50, 64, 80, 94, 115

NOTE 1 The dimensions given in Tables 1 and 2 represent preferred values. For cells with deviating size, dimensions as per Figure 1 are indicated.

NOTE 2 The widths relate to the overall width dimension of the cell excluding the thickness of the lug flanges.

The values for widths and lengths given in Tables 1 and 2 are maximum values; their negative tolerances are given in Table 3. NOTE 3 The values for height given in Tables 1 and 2 relate to the maximum height over the terminals or the closed cell vent, whichever is the greater. No lower limits are stated. NOTE 4 The dimensions shown in Tables 1 and 2 are not associated to particular cell capacities. They apply to all kinds of vented nickel-cadmium prismatic cells, i.e. L, M, H and X types. Table 3 – Measurement tolerances in millimetres

(valid for widths and lengths) Up to and including 60 mm 0 to –2 Above 60 mm, up to and including 120 mm 0 to –3 Above 120 mm 0 to –4

7 Electrical tests 7.1 General Charge and discharge currents for the tests in accordance with 7.1 to 7.9 inclusive shall be based on the value of the rated capacity (C5 Ah). These currents are expressed as multiples of It A, where It A = C5 Ah/1 h.

7.2 Charging procedure for test purposes 7.2.1 General Prior to charging, the cells shall have been discharged at 20 °C ± 5 °C, at a constant current of 0,2 It A, down to a final voltage of 1,0 V.

Two charging methods are possible, to be selected by the cell manufacturers, in order to define their cells characteristics: – charge based on constant current; SIST EN 60623:2017

IEC 60623:2017  IEC 2017 – 11 –

– charge based on constant voltage, with a value of possible charging current (CCCV).

7.2.2 Charge procedure based on constant current Unless otherwise specified in this standard, the charge preceding the various discharge tests scheduled, shall be carried out in an ambient temperature of 20 °C ± 5 °C and at a constant current of 0,2 It A. The duration of the charge shall be 7 h to 8 h. 7.2.3 Charge procedure based on constant voltage at a given current This charge method is based on a constant current followed by constant voltage procedure (CCCV). The choice for the charge methodology for performance determination shall be defined before the start of the tests, and kept throughout all the testing procedures where indicated. For such charging methodology, two parameters are adjustable: current and voltage. They shall be clearly identified by the cell manufacturer in the description of the cell characteristics, as well as in the cell marking: for example KH 185 P CCCV R1. The charging methodology CCCV is described in Annex A. 7.2.4 Rapid charge current The charging current value for performance determination shall be selected before the start of the tests, and kept throughout all the tests where indicated. The design charge current value shall be indicated in the manufacturer’s documentation attached to the cell (e.g. 0,5 It A or 1 It A) which will be referred to as R in this standard, as well as in the approval documentation. This current is a maximum value. Table 4 shows preferred values for the rapid charge current: Table 4 – Maximum values for rapid charge current R Charge current for CCCV 0,5 It A 1,0 It A 2,0 It A 3,0 It A

In case no rapid charge current is defined, it shall be taken at 0,2 It A. Otherwise, the rapid charge current rate selected shall be clearly indicated in the report of test.

7.3 Discharge performances 7.3.1 General The following discharge tests shall be carried out in the sequence given. All cells s

...

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