Your MacBook isn’t charging right and you can’t figure it where the problem is? Plugable’s USBC-VAmeter3 can help. Connect it to the power cable running to your Mac, iPad or iPhone to see the voltage, ...

So a few months ago, I stumbled upon a thing at Adafruit.com called a "Charger Doctor" which was really just a Multimeter designed to slip inline with your USB cable. It was $7.50 and I liked it.

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Fortunately, if you’ve ever needed to test the voltage on your USB-C devices, there is a tool for you. There are quite a few USB-C voltage meters on the market, including one from one of my favourite ...