Since we often rely on our mobile devices to shop, communicate, travel, and more, it's paramount to keep our phones' batteries charged. However, most of us can't stay tethered to a wall outlet.

Put a set of our Best Buy AA disposable batteries in your most power-hungry devices and they'll last more than three hours longer than the worst. For AAA batteries, our Best Buys last an hour and a ...

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources ...

So, what’s so special about H7 bulbs? Surely all headlight bulbs are basically the same, right? Well, you’d be surprised just how many types of headlights there are and how they perform differently.

Nearly everything else has changed with Absorbed Glass Mat (AGM) batteries taking the industry by storm. For a crash course on how car batteries work, check out this Youtube video. Invented in ...

What is the best solar battery overall? We've evaluated dozens of solar batteries over the years, and in 2025, the Bluetti EP900 Home Battery Backup is CNET's pick for the best solar battery ...

There are two main options that can help: home batteries and generators. We break down how to choose between these from various perspectives, including budget, longevity and convenience.