In iOS 17.2, devices that support Qi wireless charging can still only reach a maximum power output of 7.5W. Although there are already 15W Qi chargers available on the market, this is related to the specifications of the device itself, and the current Apple wireless charging chip only supports a maximum power output of 7.5W. Therefore, no matter how high the power of the charger you use, the Qi wireless charging output power of the iOS device itself is still 7.5W and cannot exceed this value.