Portable Power Bank

FIG. 1 is a front, left, and top perspective view of a portable power bank, showing my new design;

FIG. 2 is a rear, right, and bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a front, left, and top perspective view showing the portable power bank in a position of use; and,

FIG. 10 is an enlarged view of an encircled area labeled “ 10 ” in FIG. 1 .

The broken lines depict portions of the portable power bank that form no part of the claimed design.

The dot-dash broken lines in FIGS. 1 and 10 depict framing portions of the claimed design that are illustrated for enlargements form no part of the claimed design.