What is a Battery Electric Vehicle (BEV) and how does it differ from other vehicle types?

A Battery Electric Vehicle uses only an electric motor powered by a rechargeable battery pack, with no internal combustion engine. It differs from hybrids (which have both engine and motor), plug-in hybrids (larger battery but still have engine), and fuel cell vehicles (generate electricity from hydrogen). BEVs produce zero direct emissions, have lower operating costs, and offer instant torque delivery.