Apple 8p supports up to 7.5w wireless fast charging.
The iPhone 8plus, Apple's flagship product released in 2017, features an A11 processor, a new glass back design and wireless charging. The Apple 8plus is also the first generation to support wireless fast charging mobile phones, supporting 7.5w full load charging, but it is not as fast as magnetic charging 15w
The Apple 8p supports wireless fast charging up to 7.5 watts. However, it must be the official version of iOS 11.2 to support 7.5W wireless fast charging.