It has happened to most of us hasn’t it? You sit in the car, turn the ignition and… *crickets*. Yup, the battery is dead. Yikes! You probably didn’t drive the car for the past few days or you ended up ...

How the system works varies between EVs, but generally speaking the 12V battery is trickled charged by the main traction battery when the vehicle is in use, but is not charged when the vehicle is off ...