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.

This video covers the essential steps to properly test a car's alternator and diagnose common alternator issues. The guide demonstrates how to check the voltage regulator, diode rectifier, stator, and ...

When your car doesn’t start, often the battery is the culprit. Unfortunately, most vehicle owners do not check their battery until it fails. As preventative maintenance, the suggested best practice is ...

Using a Multimeter Pop the hood, locate the battery, and move any terminal caps out of the way. Clean the terminals, if necessary. Turn on your multimeter and turn it to DC voltage, then 20 volts.

Although this multimeter is tailored for the automotive market, it performs well on standard electrical measurements such as AC and DC voltage, DC amps, continuity, and resistance, among others.

As you may well know, Arduino’s analog inputs can be used to measure DC voltage between 0 and 5V (when using the standard 5V analog reference voltage) and this range can be increased by using two ...

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