Editor's note: The modern alternator is a very sophisticated piece of equipment which has virtually replaced the generator because of its lighter weight, higher efficiency, longer life and lower ...

Your car only starts reliably because two electrical workhorses share the load. The battery delivers instant power on demand, while the alternator keeps that energy flowing once the engine runs.

The alternator is responsible for charging the car battery and powering all the car's onboard network consumers. If it fails or is unstable, the battery will either not be charged or start discharging ...

If your car or truck won’t hold a charge, or if you’re having signs electrical gremlins like dimming headlights, you probably need a new alternator. “If you keep a vehicle over 100,000 miles, chances ...

Even after changing out the battery and alternator at a neighborhood shop, the truck’s battery continued to fail. Something’s afoot with the other components involved in the system that charges the ...

We all expect our car to start every time we turn the key. And it usually will, as long as there’s enough electricity stored in the battery to do the job. That’s especially important when the ...