The battery starts your car, learn more about how it works and when to replace.

How Batteries Work

A battery stores energy in chemical form that can be released on demand as electricity. This electrical power is used by the cars ignition system for cranking the engine.

The car’s battery also may power the lights and other accessories. Should the alternator or fan belt fail, the battery might also need to power the vehicle’s entire electrical system for a short period of time.

Anatomy of a Car Battery

A battery is a heart of your vehicle, explore the internal components that make it tick.

The lead-acid battery in your car supplies the power to start your car.

How Your Car Starts

Your battery is an integral part of your car's starting.

READ MORE offers a complete glossary to commonly used battery terminology.

Car Battery Glossary

A complete guide to commonly used battery terminology.