I claim the ornamental design for a battery powered toothbrush with cylindrical brush, as shown and described.
FIG. 1 is a perspective view of the battery powered toothbrush with cylindrical brush.
FIG. 2 is an enlarged top view thereof.
FIG. 3 is an enlarged bottom view thereof.
FIG. 4 is a right side view thereof, the left side being a mirror image.
FIG. 5 is a front view thereof.
FIG. 6 is a rear view thereof.
FIG. 7 is an enlarged perspective view of area 7 indicated in FIG. 1; and,
FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 7.
The broken lines along the bottom of the battery powered toothbrush with cylindrical brush in FIG. 3 depict portions of the article that form no part of the claimed design. The broken lines in FIGS. 1, 7 and 8 define the bounds of the enlarged detail view and cross sectional view, and form no part of the claimed design.