Battery Charging Device

FIG. 1 is a top perspective view of the battery charging device. FIG. 2 is a top view thereof. FIG. 3 is a bottom view thereof. FIG. 4 is a right-side view thereof. FIG. 5 is a left-side view thereof. FIG. 6 is a front view thereof. FIG. 7 is a rear view thereof; and, FIG. 8 is a top perspective view of the battery charging device indicating an intended manner in which the battery charging device is to be used. The broken lines in the drawings depict portions of the battery charging device that form no part of the claimed design.