IEC 60571 Ed. 2.1 b:2006

Applies to all electronic equipment for control, regulation, protection, supply etc. associated with the accumulator battery of the vehicle or a low voltage power supply source with or without the direct connection to the contact system. Does not apply however to electronic power circuits which conform to IEC 61287-1. It covers the conditions of operation, design, construction and testing of electronic equipment as well as basic hardware and software requirements.