This tester is everything you need to test USB-C ports, chargers, and power banks, and at a price that's not going to break the bank.

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

Many smartphones have fast wired and Qi charging, but both are reduced by various optimizations to maintain your battery.

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.