I claim the ornamental design for a battery powered sweeping machine, as shown and described.
FIG. 1 is a top left perspective view of the battery powered sweeping machine;
FIG. 2 is a rear view of the battery powered sweeping machine shown in FIG. 1;
FIG. 3 is a front view of the battery powered sweeping machine shown in FIG. 1;
FIG. 4 is a left side view of the battery powered sweeping machine shown in FIG. 1;
FIG. 5 is a right side view of the battery powered sweeping machine shown in FIG. 1;
FIG. 6 is a top view of the battery powered sweeping machine shown in FIG. 1; and,
FIG. 7 is a bottom view of the battery powered sweeping machine shown in FIG. 1.
The subject matter shown in broken lines, and any surfaces of the design not shown, including interior surfaces, form no part of the claimed invention.