Avoid alternator problems. Keep your alternator parts and charging system in peak condition. Advance Auto Parts will check your charging system at any time for no charge, and we offer quality parts like the Driveworks alternator or the ToughOne alternator for reliable starts every time. Read More

Your car alternator is an electrical generator. Your engine spins the alternator through a system of belts and pulleys. As the alternator spins, it makes electricity in the form of alternating current. Over time, the parts inside your alternator wear out and make less electricity. Alternators can also malfunction and make too much power. Too much power can cause your battery to overcharge and fail. The alternator and car battery must work together properly so your vehicle can make and store electricity.

When most drivers think about keeping their ride charged, they think battery. However, your car alternator is an important part of the electrical system.