prEN 62675:2025

Secondary cells and batteries containing alkaline or other non-acid electrolytes - Sealed nickel-metal hydride prismatic rechargeable cells and batteries for use in industrial applications.

Akkumulatoren und Batterien mit alkalischen oder anderen nichtsäurehaltigen Elektrolyten - Prismatische wiederaufladbare gasdichte Nickel-Metallhydrid-Einzelzellen für industrielle Anwendungen

Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Accumulateurs étanches parallélépipédiques au nickel-métal hydrure destinés à l’utilisation dans les applications industrielles

Sekundarni členi in baterije z alkalnimi ali drugimi nekislinskimi elektroliti - Zatesnjeni nikelj-kovinski hidridni prizmatični ponovno polnljivi členi in baterije za industrijsko uporabo

General Information

• Status: Not Published
• Publication Date: 10-Mar-2027
• ICS: 29.220.99 - Other cells and batteries
• Technical Committee: CLC/TC 21X - Secondary cells and batteries
• Current Stage: 4020 - Enquiry circulated - Enquiry
• Start Date: 22-Aug-2025
• Due Date: 19-Dec-2025
• Completion Date: 22-Aug-2025
• Ref Project: oSIST prEN 62675:2025 - Secondary cells and batteries containing alkaline or other non-acid electrolytes - Sealed nickel-metal hydride prismatic rechargeable cells and batteries for use in industrial applications.

Relations

• Revises: EN 62675:2014 - Secondary cells and batteries containing alkaline or other non-acid electrolytes - Sealed nickel-metal hydride prismatic rechargeable single cells
• Effective Date: 09-Jul-2024

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2025
Sekundarni členi in baterije z alkalnimi ali drugimi nekislinskimi elektroliti -
Zatesnjeni nikelj-kovinski hidridni prizmatični ponovno polnljivi členi in baterije za
industrijsko uporabo
Secondary cells and batteries containing alkaline or other non-acid electrolytes - Sealed
nickel-metal hydride prismatic rechargeable cells and batteries for use in industrial
applications.
Akkumulatoren und Batterien mit alkalischen oder anderen nichtsäurehaltigen
Elektrolyten - Prismatische wiederaufladbare gasdichte Nickel-Metallhydrid-Einzelzellen
für industrielle Anwendungen
Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Accumulateurs
étanches parallélépipédiques au nickel-métal hydrure destinés à l’utilisation dans les
applications industrielles
Ta slovenski standard je istoveten z: prEN 62675:2025
ICS:
29.220.99 Drugi členi in baterije Other cells and batteries
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

21A/943/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62675 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-08-22 2025-11-14
SUPERSEDES DOCUMENTS:
21A/904/CD, 21A/909A/CC
IEC SC 21A : SECONDARY CELLS AND BATTERIES CONTAINING ALKALINE OR OTHER NON-ACID ELECTROLYTES
SECRETARIAT: SECRETARY:
France Mr Jean-Marie Bodet
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

TC 21
ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of CENELEC,
is drawn to the fact that this Committee Draft for Vote (CDV) is
submitted for parallel voting.
The CENELEC members are invited to vote through the CENELEC
online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries” clauses to be
included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC clauses. (SEE
AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Secondary cells and batteries containing alkaline or other non-acid electrolytes – Sealed nickel-metal hydride
prismatic rechargeable cells and batteries for use in industrial applications.

PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
The compilation of comments has been analyzed and solved by the project team. The resolved comments have been
presented during IEC SC 21A WG 1 Virtual Meeting on 2025-04-07 and approved by the members of the WG1.
The revised draft (clean document) proposed for CDV will be onboarded on Online Standard Development (OSD). The
writing team will manage the comments from National Committees on CDV via OSD.
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You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

Link to Committee Draft for Vote (CDV) online document:

https://osd.iec.ch/#/editor/archive/38efc27b-2747-84ef-e063-b912000a4406/en/CCDV/1

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IEC CDV 62675 ED2 © IEC 2025
CONTENTS
CONTENTS . 1
FOREWORD . 3
Introduction. 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Parameter measurement tolerances . 7
5 Designation and marking . 8
5.1 Cell designation . 8
5.2 Cell termination . 8
5.3 Marking . 8
5.4 Safety recommendations . 9
6 Dimensions . 9
7 Electrical tests . 11
7.1 General . 11
7.2 Charging procedure for test purposes . 11
7.3 Discharge performance . 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 . 12
7.3.5 High rate current test . 13
7.4 Internal resistance . 13
7.4.1 General . 13
7.4.2 Measurement of the internal DC resistance . 14
7.4.3 Measurement of the internal AC resistance (optional) . 15
7.5 Pulse power calculation . 16
7.5.1 General . 16
7.5.2 Test method . 16
7.5.3 Acceptance criteria . 17
7.6 Constant power measurement test . 17
7.6.1 General . 17
7.6.2 Test method . 17
7.6.3 Test result . 17
7.7 Charge retention . 17
7.8 Endurance . 18
7.8.1 Endurance in cycles . 18
7.8.2 Final test after completion of endurance in cycles test . 19
7.8.3 General . 20
7.8.4 Permanent charge endurance . 21
7.9 Charge acceptance at constant voltage. 21
7.10 Overcharge . 21
7.11 Vent plug operation . 21
7.12 Safety device operation . 21
7.13 Gas leakage test . 22
IEC CDV 62675 ED2 © IEC 2025
7.14 Storage . 22
7.15 Power measurement Test . 22
8 Mechanical tests . 22
9 Physical appearance . 22
10 Conditions for approval and acceptance . 22
10.1 Type approval . 22
10.2 Batch acceptance . 23
Bibliography . 25

Figure 1 – Example of a sealed prismatic cell in steel container with two terminals and
four lugs . 9
Figure 2 – Example of a sealed prismatic cell in plastic container with two terminals . 10
Figure 3 – Pulsed Discharge graph showing the voltage behaviour under a current
pulse . 15

Table 1 – Dimensions for sealed nickel-metal hydride prismatic cells in steel containers . 10
Table 2 – Dimensions for sealed nickel-metal hydride prismatic cells in plastic
containers . 10
Table 3 – Measurement tolerances in millimetres (valid for widths and lengths) . 11
Table 4 – Discharge performance at 20 °C . 12
Table 5 – Discharge performance at +5 °C . 12
Table 6 – Discharge performance at −18 °C . 12
Table 7 – High currents values . 13
Table 8 – Discharge current and pulse current applied during the measurement of the
internal DC resistance . 14
Table 9 – Endurance in cycles . 18
Table 10 – Sequence of tests for type approval . 23
Table 11 – Recommended test sequence for batch acceptance . 23

IEC CDV 62675 ED2 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Secondary cells and batteries containing alkaline or other non-acid
electrolytes - Sealed nickel-metal hydride prismatic rechargeable cells
and batteries for use in industrial applications.

FOREWORD
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