oSIST prEN IEC 62259:2025

Secondary cells and batteries containing alkaline or other non-acid electrolytes - Nickel-cadmium prismatic rechargeable cells with partial gas recombination and batteries for use in industrial applications.

Sekundärzellen und -batterien mit alkalischem oder anderen nichtsäurehaltigen Elektrolyten - Wiederaufladbare prismatische Nickel-Cadmium-Einzelzellen mit teilweiser Gasrekombination

Accumulateurs alcalins et autres accumulateurs à électrolyte non-acide - Batteries et éléments parallélépipédiques rechargeables au nickel-cadmium à recombinaison partielle des gaz pour application industrielle

Sekundarni členi in baterije z alkalnimi ali drugimi nekislinskimi elektroliti - Nikelj-kadmij prizmatični ponovno polnljivi členi z delno rekombinacijo plinov in baterije za industijsko uporabo

General Information

• Status: Not Published
• Public Enquiry End Date: 30-Sep-2025
• ICS: 29.220.99 - Other cells and batteries
• Technical Committee: ISCB - Secondary cells and batteries
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 30-Jul-2025
• Due Date: 17-Dec-2025
• Ref Project: prEN IEC 62259:2025 - Secondary cells and batteries containing alkaline or other non-acid electrolytes - Nickel-cadmium prismatic rechargeable cells with partial gas recombination and batteries for use in industrial applications.

Relations

• Revises: SIST EN 62259:2004 - Secondary cells and batteries containing alkaline or other non-acid electrolytes - Nickel-cadmium prismatic secondary single cells with partial gas recombination
• Effective Date: 23-Apr-2024

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2025
Sekundarni členi in baterije z alkalnimi ali drugimi nekislinskimi elektroliti - Nikelj-
kadmij prizmatični ponovno polnljivi členi z delno rekombinacijo plinov in baterije
za industijsko uporabo
Secondary cells and batteries containing alkaline or other non-acid electrolytes - Nickel-
cadmium prismatic rechargeable cells with partial gas recombination and batteries for
use in industrial applications.
Sekundärzellen und -batterien mit alkalischem oder anderen nichtsäurehaltigen
Elektrolyten - Wiederaufladbare prismatische Nickel-Cadmium-Einzelzellen mit teilweiser
Gasrekombination
Accumulateurs alcalins et autres accumulateurs à électrolyte non-acide - Batteries et
éléments parallélépipédiques rechargeables au nickel-cadmium à recombinaison
partielle des gaz pour application industrielle
Ta slovenski standard je istoveten z: prEN IEC 62259:2025
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/936/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62259 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-07-25 2025-10-17
SUPERSEDES DOCUMENTS:
21A/905/CD, 21A/911A/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):

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 t hey
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 - Nickel-cadmium
prismatic rechargeable cells with partial gas recombination and batteries for use in industrial
applications.
PROPOSED STABILITY DATE: 2026
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NOTE FROM TC/SC OFFICERS:
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IEC 62259 ED2 © DRAFT © IEC:2025 21A/936/CDV
IEC 2025
CONTENTS
CONTENTS . 1
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
3.1 Terms and definitions. 7
3.2 Abbreviated terms . 10
4 Parameter measurement tolerances . 10
5 Designation and marking . 11
5.1 Cell designation (mandatory) . 11
5.2 Cell designation (optional) . 11
5.3 Cell termination . 12
5.4 Battery designation . 12
5.4.1 Battery structure formulation . 12
5.4.2 Definitions of components of a battery system . 12
5.4.3 Classes of usage of battery system . 15
5.5 Marking . 16
5.6 Safety recommendations . 16
6 Dimensions . 16
7 Electrical tests for cells . 16
7.1 General . 16
7.2 Charging procedure for test purposes . 16
7.2.1 General . 16
7.2.2 Charge procedure based on constant current . 17
7.2.3 Charge procedure based on constant voltage at a given current . 17
7.2.4 Rapid charge current . 17
7.3 Discharge performance . 17
7.3.1 General . 17
7.3.2 Discharge performance at 20 °C . 18
7.3.3 Discharge performance at +5 °C . 18
7.3.4 Discharge performance at −18 °C . 19
7.3.5 Discharge performance at low temperature . 19
7.3.6 Discharge performance at high temperature . 20
7.3.7 High-rate current test . 21
7.3.8 Measurement of the internal DC resistance . 21
7.3.9 Pulse power calculation . 23
7.3.10 Constant power measurement test . 24
7.4 Charge retention . 25
7.4.1 Test method . 25
7.4.2 Acceptance criterion . 25
7.5 Endurance for cells . 25
7.5.1 Test conditions . 25
7.5.2 Endurance in cycles . 25
7.5.3 Final test after completion of endurance in cycles test . 26
7.5.4 Determination of durability parameters . 27
IEC 62259 ED2 © DRAFT © IEC:2025 21A/936/CDV
IEC 2025
7.5.5 Permanent charge endurance (optional) . 28
7.6 Charge acceptance at constant voltage. 29
7.6.1 Test method . 29
7.6.2 Acceptance criterion . 29
7.7 Vent operation . 29
7.7.1 Test method . 29
7.7.2 Acceptance criteria . 30
7.8 Electrolyte retention . 30
7.8.1 General . 30
7.8.2 Test method . 30
7.8.3 Acceptance criterion . 30
7.9 Storage . 30
7.9.1 Test method . 30
7.9.2 Acceptance criteria . 30
7.10 Overcharge . 30
7.11 Determination of gas recombination efficiency . 31
7.11.1 Test method . 31
7.11.2 Acceptance criterion . 32
8 Mechanical tests . 32
9 Physical appearance . 32
10 Requirements at battery level . 32
10.1 General . 32
10.2 Environmental conditions . 32
10.3 Operating voltage range of the battery system . 33
10.4 Optional additional components to battery systems . 33
10.4.1 General . 33
10.4.2 Battery information system . 34
10.4.3 Battery heater . 34
10.4.4 Thermostat or cut-off switch . 34
10.4.5 Mounting racks . 34
10.4.6 Deported components . 34
11 Performance requirement for the battery system . 34
11.1 Design energy and power calculation methodology . 34
11.1.1 General . 34
11.1.2 Requirements for battery capacity sizing . 35
11.1.3 Expected lifetime in years for the battery system . 36
11.1.4 Deep discharge of batteries . 36
11.1.5 Exceptional use case of the battery system . 36
11.1.6 Documentation .
...