Doesn’t eliminate the problem of which charger [cell phone, ipod, flashlight, electric screwdriver, kitchen mixer, radiocontrolled car, camera, Dremel tool...] to plug into what.
I’ll buy a battery powered car when the last drop of oil is squeezed out of the Continental Shelf and Alaska.
If they can discharge as quickly as they charge ... then you could get electrocuted!!!! We’d have to ban batteries.