Wheelchairs — Part 25: Lead-acid batteries and chargers for powered wheelchairs — Requirements and test methods

This document specifies requirements and test methods for lead-acid batteries and their chargers intended for use with electrically-powered wheelchairs and scooters. Requirements for chargers are applicable to those with a rated input voltage not greater than 250 V AC and a nominal output voltage not greater than 36 V.

Fauteuils roulants — Partie 25: Batteries au plomb et chargeurs pour fauteuils roulants motorisés — Exigences et méthodes d’essai

General Information

Status
Published
Publication Date
05-Oct-2022
Current Stage
6060 - International Standard published
Start Date
06-Oct-2022
Due Date
10-Sep-2022
Completion Date
06-Oct-2022
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ISO/CD 7176-25 - Wheelchairs
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DRAFT INTERNATIONAL STANDARD
ISO/DIS 7176-25
ISO/TC 173/SC 1 Secretariat: SABS
Voting begins on: Voting terminates on:
2021-04-06 2021-06-29
Wheelchairs —
Part 25:
Lead-acid batteries and chargers for powered wheelchairs
— Requirements and test methods
ICS: 11.180.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
This document is circulated as received from the committee secretariat.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 7176-25:2021(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2021

ISO/DIS 7176-25:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO/DIS 7176-25:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 3
5 Battery chargers . 5
5.1 Electrical safety . 5
5.1.1 General. 5
5.1.2 Risk analysis shall be carried out in accordance with ISO 14971.Requirements . 5
5.1.3 Test methods . 5
5.2 Performance-related safety. 6
5.2.1 General. 6
5.2.2 Charging connector . 6
5.2.3 Reverse polarity connection . 7
5.2.4 Battery discharge . 8
5.2.5 Battery charger options . 8
5.2.6 Charging a faulty battery set . 8
5.3 Charging capability . . 9
5.3.1 General. 9
5.3.2 Requirements . 9
5.3.3 Preparation for test .10
5.3.4 Test methods .10
5.4 Electromagnetic compatibility .11
5.4.1 General.11
5.4.2 Requirements .12
5.4.3 Test methods .12
5.5 Indicators .12
5.5.1 General.12
5.5.2 Requirements .12
5.5.3 Test method .12
6 Batteries .12
6.1 Performance Requirements .12
6.1.1 Cyclic Endurance .12
6.1.2 Charge Retention .13
6.2 Safety Requirements .13
6.2.1 Requirements .13
6.2.2 Test Methods .13
6.3 Marking .13
6.3.1 Test method .13
7 Test report .14
7.1 Test reports for battery chargers .14
7.2 Test reports for batteries .14
8 User manual .15
8.1 User manual for battery chargers .15
8.2 User manual for batteries .16
9 Disclosure .16
Annex A (informative) Recommendations for cyclic endurance .17
Bibliography .18
ISO/DIS 7176-25:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 173, Assistive products for persons with
disability, Subcommittee SC 1, Wheelchairs.
This second edition cancels and replaces the first edition (ISO 7176.25:2013), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— xxx xxxxxxx xxx xxxx
A list of all parts in the ISO 7176 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved

ISO/DIS 7176-25:2021(E)
Introduction
Since the reliability and performance of an electrically powered wheelchair depend on the operation,
performance and reliability of the battery set and the battery charger, it is important to ensure that
wheelchair batteries and chargers are suitable for the purpose and that the wheelchair, batteries and
charger are compatible. It is also important to ensure that risks arising from the use of wheelchair
batteries and their chargers are eliminated or reduced as far as is practicable. Consequently, it is
essential that performance requirements and safety requirements for wheelchair batteries and battery
chargers are available.
Battery chargers are divided into three types: off-board, carry-on and on-board. Operating, transport and
storage situations can differ for these types, so it is appropri
...


INTERNATIONAL ISO
STANDARD 7176-25
Second edition
2022-10
Wheelchairs —
Part 25:
Lead-acid batteries and chargers
for powered wheelchairs —
Requirements and test methods
Fauteuils roulants —
Partie 25: Batteries au plomb et chargeurs pour fauteuils roulants
motorisés — Exigences et méthodes d’essai
Reference number
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Test conditions and apparatus . .2
4.1 Test conditions . 2
5 Battery chargers . 4
5.1 Electrical safety . 4
5.1.1 General . 4
5.1.2 Requirements . 5
5.1.3 Test methods . 5
5.2 Performance-related safety . 5
5.2.1 General . 5
5.2.2 Charging connector. 6
5.2.3 Reverse polarity connection . 6
5.2.4 Battery discharge . 7
5.2.5 Battery charger options . 8
5.2.6 Charging a faulty battery set . 8
5.3 Charging capability . 9
5.3.1 General . 9
5.3.2 Requirements . 9
5.3.3 Preparation for test . 9
5.3.4 Test methods . 10
5.4 Electromagnetic compatibility (EMC) . 11
5.4.1 General . 11
5.4.2 Requirements . 11
5.4.3 Test methods . 11
5.5 Indicators . 11
5.5.1 General . 11
5.5.2 Requirements . 11
5.5.3 Test method . 12
6 Batteries.12
6.1 Performance requirements . 12
6.1.1 General .12
6.1.2 Charge retention .12
6.2 Safety requirements .13
6.2.1 Requirements .13
6.2.2 Test methods . 13
6.3 Marking . 13
7 Test report .13
7.1 Test reports for battery chargers . 13
7.2 Test reports for batteries . 14
8 User manual .14
8.1 User manual for battery chargers . 14
8.2 User manual for batteries . 16
9 Disclosure .16
Bibliography .17
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 173, Assistive products, Subcommittee SC
1, Wheelchairs.
This second edition cancels and replaces the first edition (ISO 7176-25:2013), which has been technically
revised.
The main changes are as follows:
— explanations and requirements have been revised;
— requirements for battery chargers have been revised and added in 5.1, 5.2 and 5.3;
— requirements for battery safety and performance have been revised in 6.1 and 6.2;
— the items in test report have been clarified in Clause 7;
— some notes in 4.2, 4.5, and 5.3 have been converted to body text.
A list of all parts in the ISO 7176 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
Since the reliability and performance of an electrically-powered wheelchair depends on the operation,
performance and reliability of the battery set and the battery charger, it is important to ensure that
wheelchair batteries and chargers are suitable for their purpose and that the wheelchair, batteries and
charger are compatible. It is also important to ensure that risks arising from the use of wheelchair
batteries and their chargers are eliminated or reduced as far as is practicable. Consequently, it is
essential that performance requirements and safety requirements for wheelchair batteries and battery
chargers be available.
Battery chargers are divided into three types: off-board, carry-on and on-board. Operating, transport
and storage situations can differ for these types, so it is appropriate to apply different requirements to
them.
v
INTERNATIONAL STANDARD ISO 7176-25:2022(E)
Wheelchairs —
Part 25:
Lead-acid batteries and chargers for powered wheelchairs
— Requirements and test methods
WARNING — This document calls for the use of procedures that might be injurious to health if
adequate precautions are not taken. It refers only to technical suitability and do
...


PROJET DE NORME INTERNATIONALE
ISO/DIS 7176-25
ISO/TC 173/SC 1 Secrétariat: SABS
Début de vote: Vote clos le:
2021-04-06 2021-06-29
Fauteuils roulants —
Partie 25:
Batteries au plomb et chargeurs pour fauteuils roulants
motorisés — Exigences et méthodes d’essai
Wheelchairs —
Part 25: Lead-acid batteries and chargers for powered wheelchairs — Requirements and test methods
ICS: 11.180.10
CE DOCUMENT EST UN PROJET DIFFUSÉ POUR
OBSERVATIONS ET APPROBATION. IL EST DONC
SUSCEPTIBLE DE MODIFICATION ET NE PEUT
ÊTRE CITÉ COMME NORME INTERNATIONALE
AVANT SA PUBLICATION EN TANT QUE TELLE.
OUTRE LE FAIT D’ÊTRE EXAMINÉS POUR
ÉTABLIR S’ILS SONT ACCEPTABLES À DES
FINS INDUSTRIELLES, TECHNOLOGIQUES ET
COMMERCIALES, AINSI QUE DU POINT DE VUE
Le présent document est distribué tel qu’il est parvenu du secrétariat du comité.
DES UTILISATEURS, LES PROJETS DE NORMES
INTERNATIONALES DOIVENT PARFOIS ÊTRE
CONSIDÉRÉS DU POINT DE VUE DE LEUR
POSSIBILITÉ DE DEVENIR DES NORMES
POUVANT SERVIR DE RÉFÉRENCE DANS LA
RÉGLEMENTATION NATIONALE.
Numéro de référence
LES DESTINATAIRES DU PRÉSENT PROJET
ISO/DIS 7176-25:2021(F)
SONT INVITÉS À PRÉSENTER, AVEC LEURS
OBSERVATIONS, NOTIFICATION DES DROITS
DE PROPRIÉTÉ DONT ILS AURAIENT
ÉVENTUELLEMENT CONNAISSANCE ET À
©
FOURNIR UNE DOCUMENTATION EXPLICATIVE. ISO 2021

ISO/DIS 7176-25:2021(F)
ISO/DIS 7176-25:2021(F)
Sommaire Page
Avant-propos . v
Introduction . vi
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 2
4 Appareillage . 3
5 Chargeurs de batteries . 6
5.1 Sécurité électrique . 6
5.1.1 Généralités . 6
5.1.2 L’analyse des risques doit être effectuée conformément aux exigences de
l’ISO 14971. . 6
5.1.3 Méthodes d’essai . 6
5.2 Sécurité liée aux performances . 7
5.2.1 Généralités . 7
5.2.2 Connecteur de charge. 7
5.2.3 Connexion avec inversion de la polarité . 8
5.2.4 Décharge de la batterie . 9
5.2.5 Options du chargeur de batteries . 9
5.2.6 Charger un jeu de batteries défaillant . 10
5.3 Capacité de charge . 10
5.3.1 Généralités . 10
5.3.2 Exigences . 11
5.3.3 Préparation de l’essai . 12
5.3.4 Méthodes d’essai . 12
5.4 Compatibilité électromagnétique . 14
5.4.1 Généralités . 14
5.4.2 Exigences . 14
5.4.3 Méthodes d’essai . 14
5.5 Indicateurs . 14
5.5.1 Généralités . 14
5.5.2 Exigences . 14
5.5.3 Méthode d’essai . 14
6 Batteries . 15
6.1 Exigences de performances . 15
6.1.1 Endurance en cycles . 15
DOCUMENT PROTÉGÉ PAR COPYRIGHT
6.1.2 Conservation de charge . 15
6.2 Exigences de sécurité . 15
© ISO 2021
6.2.1 Exigences . 15
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en oeuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
6.2.2 Méthodes d’essai . 16
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
6.3 Marquage . 16
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
6.3.1 Méthode d’essai . 16
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
7 Rapport d’essai . 16
CH-1214 Vernier, Geneva
7.1 Rapports d’essai relatifs aux chargeurs de batteries . 16
Tél.: +41 22 749 01 11
Fax: +41 22 749 09 47
E-mail: copyright@iso.org
Website: www.iso.org
Publié en Suisse
ii © ISO 2021 – Tous droits réservés

ISO/DIS 7176-25:2021(F)
Sommaire Page
Avant-propos . v
Introduction . vi
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 2
4 Appareillage . 3
5 Chargeurs de batteries . 6
5.1 Sécurité électrique . 6
5.1.1 Généralités . 6
5.1.2 L’analyse des risques doit être effectuée conformément aux exigences de
l’ISO 14971. . 6
5.1.3 Méthodes d’essai . 6
5.2 Sécurité liée aux performances . 7
5.2.1 Généralités . 7
5.2.2 Connecteur de charge. 7
5.2.3 Connexion avec inversion de la polarité . 8
5.2.4 Décharge de la batterie . 9
5.2.5 Options du chargeur de batteries . 9
5.2.6 Charger un jeu de batteries défaillant . 10
5.3 Capacité de charge . 10
5.3.1 Généralités . 10
5.3.2 Exigences . 11
5.3.3 Préparation de l’essai . 12
5.3.4 Méthodes d’essai . 12
5.4 Compatibilité électromagnétique . 14
5.4.1 Généralités . 14
5.4.2 Exigences . 14
5.4.3 Méthodes d’essai . 14
5.5 Indicateurs . 14
5.5.1 Généralités . 14
5.5.2 Exigences . 14
5.5.3 Méthode d’essai . 14
6 Batteries . 15
6.1 Exigences de performances . 15
6.1.1 Endurance en cycles .
...

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