Battery case

FIG. 1 is a perspective view from above of a battery case showing my new design;

FIG. 2 is a perspective view from below thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a back view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines shown in FIGS. 2 and 3 illustrate portions of the battery case and form no part of the claimed design.