The ornamental design for a solar powered illuminatedboatcleat, as shown and described.
FIG. 1 is a perspective view of a solar powered illuminated boat cleat showing my design;
FIG. 2 is a front side view thereof, the rear side view being identical to the front side view;
FIG. 3 is a right side view thereof, the left side view being identical to the right side view;
FIG. 4 is a top view thereof; and,
FIG. 5 is a bottom view thereof.
In the drawings, the broken lines depicting potential illumination structures in FIGS. 1, 2, & 4, and broken lines depicting potential securing structure areas in FIGS. 4 and 5 depict environmental subject matter that forms no part of the claimed design.