Electric cars have been with us since the very beginning of the automobile age and from that time until now, its most important component has been the battery. It stores energy chemically until it is needed to create the electricity that powers a vehicle's motor. There have been different types of batteries over the years but none have had the practicality or popularity of the very first rechargeable one, the lead-acid battery.
While many other car-makers (with the notable exception of Toyota) are jumping on the lithium ion bandwagon for new hybrid models, Honda will stick with nickel metal hydride for now. Honda President Takeo Fukui told Automotive News that lithium ion batteries are not yet reliable or durable enough for high volume applications. When Honda debuts a new dedicated hybrid model early next year to take on the Prius, it will continue to use nickel metal hydride batteries.