Cap for Battery

FIG. 1 is a top front perspective view of a cap for battery, showing our new design; FIG. 2 is a front elevation view thereof; FIG. 3 is a rear elevation view thereof; FIG. 4 is a left side view thereof; FIG. 5 is a right side view thereof; FIG. 6 is a top plan view thereof; FIG. 7 is a bottom plan view thereof; FIG. 8 is a top bottom rear perspective view thereof; and, FIG. 9 is a top front perspective view thereof, shown in an environment of use. The broken lines of even length in FIG. 9 represent environmental structure that forms no part of the claimed design.