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 ...

Not so with battery-electrics.Their vigour is determined by the so-called State of Health (SoH). It is the key value for assessing the state of the most expensive component in an electric car.Battery ...

️ 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 ...

Your car’s battery might seem like a “set it and forget it” part, but when it fails, it can leave you stranded, potentially costing you hundreds of dollars in tow fees or a visit to the mechanic to ...

Batteries lose capacity over time. The process can be slowed down, but it’s inevitable, so after a few years, your EV won’t provide quite as much range as when it was new. The battery will lose about ...

Other warning signs include any corrosion or white or grey deposits around the battery's terminal, which should be cleaned ...

My “unicorn” Volvo V90 plug-in hybrid wagon is almost four years old. Here’s how healthy its high-voltage battery is.

Consumer Reports tests batteries for life, reserve capacity, and cold performance. Some batteries perform admirably, but these five aren't up to snuff.

F mornings can drain your car battery fast. A smart battery maintainer keeps it topped up, prevents no-starts, and dodges the ...

These are the best car batteries for cold weather, based on Consumer Reports' extensive tests. Plus, expert advice on car ...