Will the alternator drain my battery?

No, the alternator is not designed to drain the battery. Instead, the alternator is responsible for charging the battery while the engine is running. It does this by converting mechanical energy from the engine into electrical energy to power the vehicle's electrical system and charge the battery. If your battery is being drained, it could be due to a variety of factors, such as a faulty alternator, a bad battery, or a problem with the vehicle's electrical system. It's essential to have your vehicle inspected by a qualified mechanic to diagnose the issue and make any necessary repairs.