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 ...

Cold weather kills car batteries fast. If yours is 3+ years old, watch for these warning signs before you're stranded. Here's how to spot a failing battery ...

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 ...

️ 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 ...

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

Want to extend your car battery's lifespan? Switch off accessories, avoid long stationary periods, and protect your battery ...

One of the downsides of owning an EV is that you know your battery is degrading over time, but, you can't really know how much. There are ways to arrive at estimates, but until now, there hasn't been ...

Consumer Reports tests batteries for life, reserve capacity, and cold performance. Some batteries perform admirably, but ...