Main Functions of the Alternator: 1. Generate Electricity: It converts mechanical energy from the engine into electrical energy using electromagnetic induction. It powers things like the headlights, radio, dashboard instruments, air conditioning, and all the other electronics when the car is running. 2. Charge the Battery: It keeps the car’s battery charged after starting the engine. Without the alternator, the battery would drain quickly because it would have to supply all the electricity on it