With the Mophie Wireless Charging Base, Apple's Qi enabled products like the Apple iPhone XS, iPhone X and iPhone 8 can take advantage of 7.5W wireless charging. The 7.5W wireless charger by Mophie, which is also an Apple accessory partner supports 7.5 watts through Qi Medium Power for the iPhone's 7.5W Qi power consumption needs.
The Qi logo on the Mophie Wireless Charging Base's packaging may indicate that it may have been Qi certified.
The Mophie Wireless Charging Base comes with its own AC power adapter and documentation.
The Mophie Wireless Charging Base states it supports input of 24.7 watts (19 volts @ 1.3 amps) which you will need to connect to its own power adapter in order to keep it charged using 24.7 watts.