Yeah, sure, I charge my iPad with USB-C.

I've had it with me for some time. It also works the other way round without any problems.

The test report from MacLife (see test reports) says usb c in / out. I can't remember 100% if I tried it or not. But I think so. But I am still very satisfied with the device even after years. Note the weight.

The closure also works for charging.

USB-C works as both input and output.