Good EVs can heat up their battery pretty fast using only electricity. I know someone who was using a diesel heater in its Mitsubishi I-miev, an old EV that ha

Good EVs can heat up their battery pretty fast using only electricity. I know someone who was using a diesel heater in its Mitsubishi I-miev, an old EV that had a terrible factory heating system. It did sound a lot less convenient than electric heating.