A car battery is a crucial component that plays a vital role in the operation of a vehicle. Its primary function is to provide electrical energy to start the engine and power various electrical ...

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.

Noah is a long-time writer, editor, website developer, and creative based in the United States and currently focused on automotive writing. Electric and hybrid powertrains and battery specifications ...

️ 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 ...

The reality is that like almost every component under the hood, a car battery has a finite lifespan and will conk out on you eventually. Weather conditions, corrosion, electrical shorts, charging ...