my experience with cig usb c chargers is that while all the ones I have tried do work only a few of them charged rapidly.
Seems like there are a few different standards for rapid charge or power delivery and if the charger doesn't support whatever your device does then it just charges very slowly.
Mines for charging a pixel 2 phone btw, and with the slow charging the phone would actually still lose battery whilst running with the screen on and navigation, where as with the right fast charging one it is as good as the 240v charger that came with the phone.
I think the best one I got in the end was from jaycar.
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