These tend to be powered by lead acid batteries but car manufacturing companies are working to find alternatives to the inefficient and relatively short lived acid type. For example, the Lithium-Ion battery has a much longer travelling range before it needs recharging and this may revive the manufacture of electric vehicles.
Nickel Metal Hydride batteries are now used in the petrol/electric hybrid cars manufactured by Ford, Honda and Toyota. These contain no cadmium and are less environmentally damaging.
Advantages of electric cars
Disadvantages of electric cars