Using the ATX 9801 is easy -- plug one end into a mains outlet, and it acts like a short extension lead with a digital display. The socket on the front accepts pretty much every power plug worldwide, ...

Despite their limited use for testing wall chargers and power banks, USB inline testers let you compare power sources. In three videos, we take you through their features, and we also try an inline ...

The best power meters will help you make the most of your cycling, enabling you to calculate efforts and training load, track your fitness and more. Once the reserve of professional riders, power ...