Is iphone xr supports 22watt charger?
I have powerbank which gives output of 22.5 watt, is that safe to use for iphone xr
watt is not a spec of how much is output
its how much current one can draw from the charger while it can still output 5volt (in case of ios devices which charge by 5volt output)
the ios device will draw as much current as it was build to draw when charging, if a charger is able to provide more then that then it's of no importance.