WG 3 - TC 21/WG 3

IEC TS 61044:2021(E) covers opportunity charging of lead-acid traction batteries, i.e., the use of idle time during a working period to increase the state of charge (SoC) so as to extend the daily working period of a lead-acid traction battery while at the same time avoiding an excessive depth of discharge.
This document specifies requirements for the use of opportunity charging of lead-acid traction batteries of vented and valve regulated types when the battery manufacturer has not provided alternative specific operating procedures.

IEC 63193:2020 is applicable to lead-acid batteries powering electric two-wheelers (mopeds) and three-wheelers (e-rickshaws and delivery vehicles), and also to golf cars and similar light utility and multi-passenger vehicles.
The document specifies methods of tests tailored to batteries destined for the above‑referenced types of vehicles so as to ensure satisfactory and safe battery performance in the intended application.
This document does not apply for example to lead-acid cells and batteries used for:
vehicle engine starting applications (IEC 60095 series);
traction applications (IEC 60254 series);
stationary applications (IEC 60896 series);
general purpose applications (IEC 61056 series); or to
motorized wheelchairs and similar personal assist vehicles

IEC TR 61431:2020 is an informative document relating to aspects of automatic monitor systems as utilized in lead-acid traction battery applications. It lists the characteristics and features that need to be monitored and evaluated to properly assess the operative status of a traction battery. Guidance concerning the accuracy and reliability of the generated information is also provided.

This part of IEC 60254 is applicable to lead-acid traction batteries used as power sources for electric propulsion. The object of the present standard is to specify:
- the maximum external (overall) dimensions of traction battery cells, that is, the width, the height and the length;
- the form of the marking of traction battery cell polarity and dimensions of corresponding symbols;
- the basic dimensions of some commonly used traction battery terminals designed to connect output cables to the battery;
- the dimensions of cells commonly used in Asia and North America.
This fourth edition cancels and replaces the third edition published in 1997 and its Amendment 1 (2000). It constitutes a technical revision. The main modification concerns the introduction of new dimensions.

This part of IEC 60254 is applicable to lead acid traction batteries used as power sources for electric propulsion. The tests defined are relevant to all traction battery applications which include road vehicles, locomotives, industrial trucks and mechanical handling equipments. Tests which may be used specifically to test batteries developed for use in vehicles such as light passenger vehicles, motor cycles, light commercial vehicles, etc. may be found in alternative standards e.g. IEC 61982-2. The object of this standard is to specify certain essential characteristics of traction batteries or cells, together with the relevant test methods of those characteristics.