
Excellent USB power, voltage and ammeter. Power goes in and out. For my Dell XPS 13, the USB-C port provides reverse power. Current goes to the output and goes to the input. In this case the meter will show the correct voltage but 0 for amps. After that, the meter will always read 0 for amps even if you power the input and turn off the output. To fix the problem you need to restart your device, after that it will work again. I still think it's a great counter, but I want a use case to make it work.

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