A Battery Electric Vehicle or BEV is a vehicle which uses a battery as the only method of energy storage for the propulsion of the vehicle. A BEV does not have a fossil fuel engine or generator. It is driven solely by an electric motor with battery energy storage.
Hybrid Electric Vehicles use a combination of both electric power and petrol or diesel power to propel the vehicle. They can be ‘plug-in’ or ‘non plug-in’.
Known as HEV’s, these vehicles have both an internal combustion engine and an electric motor. The electric battery is only charged by the ICE, the motion of the wheels or a combination of both. Meaning that there is no charging connector.
PHEV meaning: PHEV stands for Plug-in Hybrid and are like the HEV as they use both an internal combustion engine (ICE) and also an electric motor. PHEVs can be charged from an electricity source, while they also access cheaper and cleaner electric power. The battery's energy is recharged by the ICE, wheel motion, or by plugging into a charge point.
Another type of PHEV, is called a Range Extender Electric Vehicle (REEV). A REEV consists of a small petrol powered generator used to recharge the battery and to allow a larger range when the battery level is low. This is a more efficient method of propelling the vehicle as opposed to using the same fuel in a traditional engine.