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 ...

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

We may receive a commission on purchases made from links. There's nothing more annoying than checking the time on your wall clock and realizing the battery's already dead, or plopping down on your ...

While there's a lot to love about the Yale Assure Lock 2, its short battery life is undoubtedly one of its weak points. When it's connected to a Wi-Fi network, you'll need to replace its batteries ...

Total battery capacity is only one factor influencing actual device longevity. Lab tests demonstrate how different hardware components impact power consumption rates. Efficient processors and screen ...

We've tested the best phones you can buy in the US alongside many popular mid-range and budget models. One of the most important and objective tests we conduct is a standardized battery test. We're ...