They’re rarely talked about, but they should be! An EV’s 12-volt battery is just as essential as its high-voltage battery. When speaking to technicians about EV 12-volt batteries, I’ve heard ...

For EVs, the battery is kept at full charge by the high-voltage (HV) 400- or 800-volt system via a converter. The 12-volt battery system is separate from the HV batteries that power the EV’s ...