Fuel cell regulator

Fuel Cell Regulator is a quest item in Fallout 2.

''Some car-owners installed this regulator, that doubles your car's mileage between charges, but most drivers didn't care how much juice their cars consumed, after all, power's cheap and plentiful so why worry. It can be found in Trapper town in Klamanth, in car above fence when you enter in area, which can be reached by navigating the rat-infested underground tunnels.''

It weighs 5 pounds.