What you'll spend on a battery tester depends less on the brand you buy and more on what type you need. While many sell for less than $100, some of the higher-powered testers, jump starters ...

You want to be sure that the tester is giving you an accurate reading of the battery’s remaining power. You don’t want to replace a battery unnecessarily, nor do you want to continue using a ...

For some of these, the primary test was seeing how long I could power a small refrigerator before fully draining the battery. A fridge is a high-end, but common, use case for these units that ...

we decided to put Topdon’s V4500 Plus jump-starter to the test, simply to see if it could put life back into the Mustang’s long-dormant battery. The V4500 Plus is a 4,500-amp power solution ...

A drone powered by an ultra-low-temperature high-energy-density lithium battery, developed by Chinese researchers, has ...

you want to build a small battery-powered sensor that wakes up every few minutes to do something, and you don’t want to delve into hardware too much for now. Well then, does [Mads Chr.