EN 61951-2:2017/A1:2022
(Amendment)Secondary cells and batteries containing alkaline or other non-acid electrolytes - Secondary sealed cells and batteries for portable applications - Part 2: Nickel-metal hydride
Secondary cells and batteries containing alkaline or other non-acid electrolytes - Secondary sealed cells and batteries for portable applications - Part 2: Nickel-metal hydride
No scope available
Sekundärzellen und -batterien mit alkalischen oder anderen nichtsäurehaltigen Elektrolyten - Tragbare wiederaufladbare gasdichte Zellen und Batterien - Teil 2: Nickel-Metallhydrid
Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Accumulateurs étanches pour applications portables - Partie 2: Nickel-métal hydrure
Sekundarni členi in baterije z alkalnimi ali drugimi nekislinskimi elektroliti - Sekundarni zatesnjeni členi in baterije za prenosne naprave - 2. del: Nikelj-kovinski hidrid - Dopolnilo A1
General Information
Relations
Overview
EN 61951-2:2017/A1:2022 (IEC 61951-2:2017/AMD1:2022) is the European amendment addressing secondary sealed nickel‑metal hydride (NiMH) cells and batteries for portable applications. The amendment updates normative references, terminology and specific test and marking requirements to support consistent safety, performance and chemistry identification for sealed NiMH cells used in consumer and professional portable devices.
This document is intended for manufacturers, test laboratories, compliance engineers and procurement specialists involved with NiMH rechargeable cells and packs.
Key Topics
- Normative references: Addition of IEC 62902 (marking symbols for chemistry identification) to the list of normative documents referenced by the standard.
- Marking and identification: Clarified marking expectations for small prismatic, cylindrical and button cells and batteries, including name/identification/registered trademark of manufacturer or supplier and chemistry identification symbols as per IEC 62902.
- Terminology: Introduction of the term "trickle charge" (small current supplied to compensate self-discharge while disconnected from load).
- Dimensional and performance tables: Revisions and replacements of example dimension tables and discharge performance tables for various NiMH cell designations (prismatic, cylindrical, jacketed cells) to reflect corrected and updated entries.
- Endurance and cycle‑life: Updated cycle endurance requirements and test termination criteria for specific cell sizes and designations to ensure reliable evaluation of service life.
- Safety features: Reworded requirements for the pressure relief feature (formerly safety device operation) and the associated verification tests to confirm gas escape at critical internal pressures.
- Internal resistance measurement: Clarified method and units for measuring internal AC resistance (measurement at 1.0 kHz ± 0.1 kHz) and updated presentation of the internal DC resistance calculation.
Applications
This amendment supports practical applications in:
- Product design and R&D for portable electronics that specify or integrate NiMH cells and packs.
- Quality assurance and type testing in accredited laboratories to verify compliance with European and international NiMH safety and performance expectations.
- Manufacturing and labeling processes to apply standardized chemistry marking and manufacturer identification for supply chain traceability.
- Procurement and regulatory assessment, where clear marking, verified cycle life and documented safety features (pressure relief, charging methods) are required for market entry.
Benefits include improved safety verification, harmonized chemistry identification (IEC 62902 symbols), clearer endurance testing methods and consistent internal resistance measurement procedures.
Related Standards
- IEC 61951-2 (base International Standard for NiMH sealed cells)
- IEC 62902 (marking symbols for identification of battery chemistry) - added by this amendment
- CENELEC/EN adoption references (EN 61951-2:2017/A1:2022) for national implementation
For detailed test procedures, tables and exact measurement formulas, consult the full EN 61951-2:2017/A1:2022 / IEC 61951-2:2017/AMD1:2022 publication and the referenced normative documents.
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2025
Sekundarni členi in baterije z alkalnimi ali drugimi nekislinskimi elektroliti -
Sekundarni zatesnjeni členi in baterije za prenosne naprave - 2. del: Nikelj-
kovinski hidrid - Dopolnilo A1
Secondary cells and batteries containing alkaline or other non acid electrolytes -
Secondary sealed cells and batteries for portable applications - Part 2: Nickel-metal
hydride
Sekundärzellen und -batterien mit alkalischen oder anderen nichtsäurehaltigen
Elektrolyten - Tragbare wiederaufladbare gasdichte Zellen und Batterien - Teil 2: Nickel-
Metallhydrid
Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Accumulateurs
étanches pour applications portables - Partie 2: Nickel-métal hydrure
Ta slovenski standard je istoveten z: EN 61951-2:2017/A1:2022
ICS:
29.220.30 Alkalni sekundarni členi in Alkaline secondary cells and
baterije batteries
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 61951-2:2017/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2022
ICS 29.220.30
English Version
Secondary cells and batteries containing alkaline or other non-
acid electrolytes - Secondary sealed cells and batteries for
portable applications - Part 2: Nickel-metal hydride
(IEC 61951-2:2017/AMD1:2022)
Accumulateurs alcalins et autres accumulateurs à Sekundärzellen und -batterien mit alkalischen oder anderen
électrolyte non acide - Accumulateurs étanches pour nichtsäurehaltigen Elektrolyten - Tragbare wiederaufladbare
applications portables - Partie 2: Nickel-métal hydrure gasdichte Zellen und Batterien - Teil 2: Nickel-Metallhydrid
(IEC 61951-2:2017/AMD1:2022) (IEC 61951-2:2017/AMD1:2022)
This amendment A1 modifies the European Standard EN 61951-2:2017; it was approved by CENELEC on 2022-12-01. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 amendment 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,
Türkiye 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
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61951-2:2017/A1:2022 E
European foreword
The text of document 21A/809/FDIS, future IEC 61951-2/AMD1, 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
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-09-01
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-12-01
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61951-2:2017/AMD1:2022 was approved by CENELEC as
a European Standard without any modification.
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.
The Annex ZA of EN 61951-2:2017 applies with the following changes:
Publication Year Title EN/HD Year
Add the following reference:
IEC 62902 - Secondary cells and batteries - Marking EN IEC 62902 -
symbols for identification of their chemistry
IEC 61951-2 ®
Edition 4.0 2022-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Secondary cells and batteries containing alkaline or other non-acid
electrolytes – Secondary sealed cells and batteries for portable applications –
Part 2: Nickel-metal hydride
Accumulateurs alcalins et autres accumulateurs à électrolyte non acide –
Accumulateurs étanches pour applications portables –
Partie 2: Nickel-métal hydrure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.220.30 ISBN 978-2-8322-5873-6
– 2 – IEC 61951-2:2017/AMD1:2022
© IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SECONDARY CELLS AND BATTERIES CONTAINING
ALKALINE OR OTHER NON-ACID ELECTROLYTES –
SECONDARY SEALED CELLS AND BATTERIES
FOR PORTABLE APPLICATIONS –
Part 2: Nickel-metal hydride
AMENDMENT 1
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 document may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to IEC 61951-2:2017 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
...
Frequently Asked Questions
EN 61951-2:2017/A1:2022 is a amendment published by CLC. Its full title is "Secondary cells and batteries containing alkaline or other non-acid electrolytes - Secondary sealed cells and batteries for portable applications - Part 2: Nickel-metal hydride". This standard covers: No scope available
No scope available
EN 61951-2:2017/A1:2022 is classified under the following ICS (International Classification for Standards) categories: 29.220.30 - Alkaline secondary cells and batteries. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 61951-2:2017/A1:2022 has the following relationships with other standards: It is inter standard links to EN 61951-2:2017, EN 61951-2:2017/A1:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 61951-2:2017/A1:2022 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CLC standards.
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...