There are three main types of electric cars; battery electric which are completely powered by batteries and charged with a unit, plug-in hybrid electric vehicles that have an electric motor and a conventional gas or diesel engine, and a fuel cell electric vehicle that converts hydrogen gas into electricity to power the battery and the electric motor (Union of Concerned Scientists, 2015). The most popular electric vehicle, battery electric vehicles, work by using stored electricity in a battery pack that powers an electric motor and turns the wheels (How Do All-Electric Cars Work, 2017). The batteries are then recharged using grid electricity from a wall or charging unit (Union of Concerned Scientists, 2015). Currently, all electric vehicles are using lithium-ion batteries (Delucchi, 2014). Since battery electric vehicles don’t have tailpipes, they automatically eliminate those pollutants that would be released. The way the electricity is produced to charge the car will determine if the electric vehicles are completely emission-free or if they still pollute, but obviously significantly less than gasoline-powered vehicles. Another cool aspect behind the technology of electric vehicles is that the, “electric motor can act as a generator, which permits the recovery of energy during the braking of the vehicle” Delucchi, 2014). This is something that is unique to electric vehicles, and quite intelligent because the car makes the most of its energy. Electric vehicles also get 80-90% of the output of battery to the wheels, whereas regular gasoline vehicles lose a lot of that output as the energy stored in the gas is being converted (Delucchi, 2014). The main components of an electric car are the battery, charge port, DC/DC converter, electric traction motor, onboard charger, power electronics controller, thermal system, traction battery pack, and the transmission (How Do All-Electric Cars Work, 2017). All of these components work together to allow the car to drive and operate properly.