For all of you who have a multimeter thrown in a drawer or toolbox but don’t know how to use it, these instructions will help in your search for missing voltage.

The power supply on a computer transforms the alternating current from the wall outlet into a direct current flow that the computer's components can use. Testing the DC voltage output of the power ...

Our Plugable USB-C Voltage and Amperage Meter review looks at a compact bidirectional USB-C meter with power pass-through and more.

This little gizmo gives you real-time stats on both your device's battery and the power output of your charger.