[Animats]

It's not enough to charge a car fully.

[skeledrew]

Then charge the car partially.

[kaelwd]

How often do you discharge a car fully?

[tialaramex]

I think this is another of those weird "Electricity as fuel" metaphors where non-owners don't understand that an EV, like their phone, isn't a thing you specifically "fill up" like you would a petrol car.