The ornamental design for a batterychargingcase, as shown and described.
FIG. 1 is a front perspective view of a portion of a battery charging case according to my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a top side view thereof; and,
FIG. 5 is a rear view thereof.
The broken line showing of the remainder of the case, including the vents and ridge shown in FIGS. 1, 3 and 5, and the front and rear flat panels shown in all of the figures, are for illustrative purposes and form no part of the claimed design. The broken line immediately adjacent to the shaded area represents an unclaimed boundary of the design. The right side view is a mirror image of the left side shown in FIG. 3, and is not claimed. The bottom side is devoid of claimed ornamentation, and is omitted from the enclosed drawings.