Can not use the original head, millet 55 watt wireless charger should be equipped with millet original 66 watts or 55 watts charging head, must be the same brand, otherwise the faction is incompatible, see does not support the 50 watt of an input, a fast charge of a protocol. Generally, fresh mobile phones should also be equipped with the same brand of chargers can be used, and they can formulate relevant agreements in it.