How an Alternator Works (Quick Overview):Your alternator is a crucial part of the vehicle’s charging system. It converts mechanical energy from the engine (via a belt) into electrical energy to power your car’s electronics and recharge the battery. A healthy alternator typically produces 13.5 to 14.5 volts when the engine is running. Anything below that may point to a failing alternator. Also, read – Car Alternator Functions and Symptoms of Failure 1: Flickering or Dimming Headlights One of the first and most visible symptoms of a failing alternator is inconsistent headlight brightness. As the alternator struggles to provide steady voltage, headlights may flicker when you accelerate or dim when the engine is idling. This happens because the alternator isn’t maintaining … Continue reading 5 SIGNS OF A BAD ALTERNATOR