The ornamental design for a batcover, as shown and described.
FIG. 1 is a left side elevational view of the bat cover showing my new design, the undisclosed right side being identical;
FIG. 2 is an enlarged rear view of the bat cover;
FIG. 3 is a bottom view of the bat cover;
FIG. 4 is an enlarged front view of the bat cover;
FIG. 5 is a top view of the bat cover; and,
FIG. 6 is a perspective view of the bat cover.
The broken line showing of the bat in FIG. 6 is included for the purpose of illustrating environmental structure and forms no part of the claimed design.