Electric Vehicles (EV) of next generation are pushing the development of new battery technologies. To minimize cost and maximize efficiency of batteries, the vehicle system should have effective usable battery storage capacity. Remarkable progress has been achieved on battery technologies for EVs. Battery energy densities have steadily been increased, when batteries today can be reliably charged and discharged thousands of times. If designers effectively exploit, these advancements in energy capacity in EVs have the potential to be competitive with traditional vehicles in terms of cost, reliability and longevity.