The alternator is responsible for charging the battery and supplying electrical power to the car's electrical systems. If the alternator fails, the battery will not be able to be recharged and the car will eventually stall.
Some of the symptoms of a failing alternator include:
* Dimming headlights
* Flickering interior lights
* Difficulty starting the car
* Stalling
If you experience any of these symptoms, it is important to have your alternator checked by a qualified mechanic.