MT 6 - TC 21/MT 6

IEC 62485-4:2015 applies to the safety aspects associated with the accommodation, the arrangements of circuits and the operation of secondary valve-regulated lead-acid cells and batteries in portable appliances. Requirements are specified which oblige the manufacturers of appliances and secondary batteries to prevent the misuse of batteries in the course of operation to provide protective measures avoiding injury to persons in case of battery failure and to provide sufficient information to users. This standard does not apply to secondary cells and batteries containing alkaline or other non-acid electrolytes. This first edition cancels and replaces the first edition of IEC TR 61056-3 published in 1991. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the IEC TR 61056-3:
a) updating of the requirements, and harmonisation of the text for consistency with the IEC 62485 series.

IEC 61056-1:2012 specifies the general requirements, functional characteristics and methods of test for all general purpose lead-acid cells and batteries of the valve-regulated type:
- for either cyclic or float charge application;
- in portable equipment, for instance, incorporated in tools, toys, or in static emergency, or uninterruptible power supply and general power supplies.
This third edition cancels and replaces the second edition of IEC 61056-1 published in 2002. It constitutes a technical revision. The main changes consist in adding new battery designations and an update of the requirements like the one concerning the marking.

IEC 61056-2:2012 specifies the dimensions, terminals and marking for all general purpose lead-acid cells and batteries of the valve regulated type:
- for either cyclic or float charge application;
- in portable equipment, for instance, incorporated in tools, toys, or in static emergency, or uninterruptible power supply and general power supplies.
This third edition cancels and replaces the second edition of IEC 61056-2 published in 2002. It constitutes a technical revision. The main changes consist in adding new battery designations and an update of the requirements like the one concerning the marking.
The contents of the corrigendum of October 2012 have been included in this copy.

Specifies general requirements and the main characteristics together with the corresponding test methods.

Is applicable to lead-acid batteries of the valve regulated type for cyclic and standby application with the rated capacity not exceeding 25 Ah.