Learn how to make your car battery last longer with this expert advice from CR. These simple steps will catch any battery issues before they cause trouble.

Your car's 12-volt battery is one of its most vital components. It's responsible for sending electricity to the starter motor, which, in turn, sends power to the ignition system and cranks the engine.

A car battery is one of the most important components of any vehicle. It provides the necessary power to start the engine and ...

Just because your battery is flat, or a little low on power, doesn't mean you need to immediately dash out and buy a brand new one. The average price of a car battery is soaring these days, thanks in ...

️ Editor's note: This article was updated with new information in December 2025. Dead batteries are a predictable reality for any car that spends more time parked than driven. Battery discharge does ...