A battery tester can serve this exact purpose. Battery testers come in various shapes and sizes and can be used for different types of batteries. However, when it comes to small batteries ...

The discharge subscore rates the speed of a battery’s discharge during a test, which is independent of the battery’s capacity. It is the ratio of a battery’s capacity divided by its autonomy. A ...

That's why we put every laptop we review to the test and run them through multiple instances of our battery test, which tasks the laptop with endlessly surfing the web via Wi-Fi with its screen ...

That's still pretty impressive, given that the Razr is a foldable device, and those phones have traditionally struggled with battery life. The test numbers we use in the above chart reflect the ...

I and other ZDNET experts went hands-on with several of the top MagSafe battery packs (including every pick on this list), spending time testing for charge speed, function, and other features ...

They can be used without battery power for basic measurements ... and it includes several of the same testing features as the Fluke for a fraction of the price. As cars get more and more ...

The Mazda 3 has long been celebrated as compelling and sporty among compact cars, and the 2025 Mazda 3 hatchback with the available manual transmission pushes those qualities to new heights.

It's already been a banner year for battery life, with newly released devices like the OnePlus 13 and OnePlus 13R producing impressive results in our battery testing. And soon, the new Galaxy S25 ...

He is in charge of developing and carrying out testing procedures for a wide variety ... to use them right out of the box. If you want a battery that lasts, we've done the research for you.