Electric vehicles can benefit us in many ways. Comparing with the internal combustion engine, EVs don’t cause pollution when operating. They can run in a long period of time. Economically, because these vehicles using battery, they reduce the oil import and the imbalance trading in the US and also the users save a lot of money. The cells used for these vehicles are called Nickel metal hydride battery which are very high power, long life, quick charge and easy to maintain. CELL REACTION The NiMH battery stores hydrogen as a reaction product in the solid phase. The