Believe it or not, not all USB ports yield the same amount of power, but here's a $10 gadget that can show you which ones you ...

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 ...

Have you ever tried charging your phone, laptop or headphones and, after a few hours, it still wasn’t charged? The answer is most likely “yes.” You’re then left wondering if there’s something wrong ...

Measuring your PC's power consumption is crucial for understanding your energy costs and optimizing your system's efficiency. Here are several methods to accurately determine how much power your PC ...