Opportunity charging of lead-acid traction batteries

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.

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IEC TS 61044

Edition 1.0 2021-08

Opportunity charging of lead-acid traction batteries
IEC TS 61044:2021-08(en)

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IEC TS 61044


Edition 1.0 2021-08



Opportunity charging of lead-acid traction batteries




ICS 29.220.20; 29.220.99 ISBN 978-2-8322-1006-7

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® Registered trademark of the International Electrotechnical Commission

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– 2 – IEC TS 61044:2021 © IEC 2021
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Planning the implementation of opportunity charging . 7
5 Operational procedures . 8
5.1 General . 8
5.2 Charging conditions . 8
5.3 Regular charges . 8
5.4 Ventilation. 9
5.5 Temperature . 9
5.6 Examples of discharge and charge profiles . 9
Bibliography .

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