Wireless charger

FIG. 1 is a perspective view of a wireless charger showing my design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings depict portions of the wireless charger in which the design is embodied that form no part of the claimed design.