PCWorld explains how to calibrate smartphone and laptop batteries when they display inaccurate percentage readings or cause ...

Discover how to make a DIY hand-powered mobile phone charger using simple materials such as two small DC motors and a piece of cardboard. This step-by-step tutorial covers mounting the motors, wiring ...

Business trip, road trip, or just a trip across town? Our top tested travel printers will let you print photos, documents, and more on the spot, wherever you are. Most of my current work for PCMag is ...