FIG. 1 is a first perspective view of a solar power bank showing my new design;
FIG. 2 is a second perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top view thereof;
FIG. 8 is a bottom view thereof;
FIG. 9 is a perspective view of another state of the solar power bank thereof;
FIG. 10 is a perspective view of another state of the solar power bank thereof;
FIG. 11 is an enlarged view of the selected portion in FIG. 1; and,
FIG. 12 is an enlarged view of the selected portion in FIG. 2.
The broken lines shown in the drawings depict portions of the solar power bank in which the design is embodied that form no part of the claimed design.