Only about 10w of power, because of the function of wireless charging, the power of fast charging depends on the power supported by the mobile phone itself, and it must follow the charging protocol. The wireless charging power of the iPhone itself is not high, and it does not support Huawei's wireless charging protocol. So it can only be the lowest level of charging power, that is, about 10w.
As long as the charging protocol is the same, it supports the maximum power, such as the iPhone12 series, iPhone11, iPhone X and other series, which supports up to 18 watts.