Battery Cover

FIG. 1 is a perspective view of a battery cover according to the present design; FIG. 2 is another perspective view of the battery cover according to the present design; FIG. 3 is a front view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a top view thereof; FIG. 8 is a bottom view thereof; and, FIG. 9 is a perspective view of the battery cover of FIG. 1 in an environment of use. The broken lines in FIGS. 1 and 3 depict portions of the battery cover that form no part of the claimed design. The broken lines in FIG. 9 depict environmental subject matter that forms no part of the claimed design.