The 12-volt system powers the starting circuit and the low-power computer systems that manage the high-voltage system. Pushing the start button activates a motor controller relay (or contactor ...

You may have asked yourself a very valid question about the need for a 12-volt battery in an EV built around a large battery pack. An electric vehicle’s largest, most important and most ...

A manufacturing defect in the vehicles' 12-volt batteries can cause them to stall at low speeds, or not restart after ...

Engineers have consistently predicted that cars would shift from 12-volt electrical systems to 48-volt systems for two decades. But cost and inertia have kept 12-volt electrics in place, with the ...