The charging system is responsible for providing power to your heavy-duty vehicle’s electrical components, including all the lights, the stereo, power steering and windows, windshield wipers, and more. This system is composed of three major components: the battery, voltage regulator, and alternator. The alternator is probably among the least understood parts of a truck relative to the amount of work it does, so read the guide below to learn more about it.

What Is an Alternator?

While it may seem like the battery provides power to a vehicle’s electrical components, the alternator actually does this. The battery is simply there to start the truck. Once the engine is running, the alternator generates energy to power the electrical system and recharge the battery at the same time. It functions like a mini-generator inside your heavy-duty vehicle, and the principle behind it is basically the same. Its rotor is spun by the engine using a serpentine belt, generating energy that is converted into alternating current.

How Long Does It Usually Last?

Compared to cars, modern trucks are equipped with significantly more electrical devices, from GPS navigation systems to televisions and even microwaves or coolers for long-haul rigs. As such, your alternator also has to work extra hard to produce sufficient power, which could stress some of its parts. Other factors can also affect an alternator’s life span, including heat generated by the engine. On average, your alternator will probably last around 100,000 miles before it has to be replaced. If you notice a loss of power to electrical components or dimming lights while your engine is running, you should have it checked immediately.

If you need excellent repair services for your truck’s alternator or starter, look no further than Eubanks Auto Electric in De Kalb, TX. This company has expert technicians who have been handling domestic and foreign cars, trucks, ATVs, and even lawnmowers since 1954. They also specialize in winch repair. Call (903) 667-2081 for inquiries or visit their website for more information about the services they offer.