In general, under normal circumstances, 80w wireless fast charge can be used with 55w charging head, but the actual output power can not reach 80 watts, nor can it reach 55 watts. Under normal circumstances, 80 watts wireless fast charge requires a charging head greater than 80 watts to achieve the maximum output power, and the actual output power will be determined according to the charging device and the charging head. The fast charge agreement automatically adjusts according to the power of the charger and the power of the device being charged.