A charged battery is a happy battery. Keeping your car’s battery properly charged is essential to long life and reliability. When you drive, your car’s charging system keeps your battery topped up.

This article was updated with new information in December 2025. A vehicle’s performance starts–no pun intended–with its power source, making battery care one of the most important—yet ...

Not all cars are meant to be driven every day. If you own a special vehicle, such as a classic or sports car, you probably keep it tucked away somewhere until you're in the mood to take it for a spin.