The alternator is a lightweight, high-performance machine that supplies electrical power for charging the battery and operating accessories in gasoline and diesel engine electrical systems. Featuring ...

(iSeeCars) – Your alternator is one of the hardest working parts on your vehicle. It’s a common misconception that the battery in your vehicle is what supplies your power while the vehicle is running.

The short answer here is that yes — in most cases — you should replace your car's serpentine belt when replacing the alternator. The issue isn't so much that the two components are part of the same ...