Yeah, don’t pitch the current storage battery!
The batteries on electrics and hybrids are waaaaaaaaaaaaay different from the standard 12 volt ones you have on your gasoline driven car; longer cycle lifespan, much larger storage capacity, and tremendously higher output - like 300+ volts as opposed to 12.
If we’re going to end up with electrical systems on gasoline engines in-game, they REALLY need a separate battery component for that.