Mar 4, 2025 · Learn how your car's alternator powers electrical components and charges the battery. Discover how it works, signs of a bad alternator, and when to get service.

In principle, any AC electrical generator can be called an alternator, but usually, the term refers to small rotating machines driven by automotive and other internal combustion engines. An …

May 9, 2022 · An alternator is a generator of electric power in a car and is a major component of the vehicle's charging system. All cars with an internal combustion engine except for some …

Find an alternator that fits your car and delivers the same performance as original equipment, or better. We carry long lasting replacements, like Duralast Gold alternators that come with a …

An alternator is referred to as a machine which is responsible for converting the mechanical electricity from the primary mover into the AC, while the generator is the one which is found …

Nov 18, 2025 · alternator, Source of direct electric current in modern vehicles for ignition, lights, fans, and other uses. The electric power is generated by an alternator mechanically coupled to …

Nov 18, 2025 · The alternator supplies electricity to the car while it’s running and recharges the battery. Because of how it works, it’s one of the main sources of a failing charging system and …

12 hours ago · A complete U.S.-focused guide to alternator failures—covering warning signs, diagnostics, belt-driven vs smart alternators, replacement steps, costs, safety considerations, …

Get an estimate today and take your vehicle to your local NAPA Auto Care center for alternator repair or replacement service by an ASE-certified technician.

Feb 24, 2012 · What is an Alternator? An alternator is defined as a machine which converts mechanical energy to electrical energy in the form of alternating current (at a specific voltage …