Mobile Power Bank

FIG. 1 is a front, left and top perspective view of a mobile power bank, showing my new design; FIG. 2 is a rear, left and bottom perspective view thereof; FIG. 3 is a perspective view thereof, shown with the mobile power bank in a state of use; FIG. 4 is a front view thereof; FIG. 5 is a rear view thereof; FIG. 6 is a left side view thereof; FIG. 7 is a right side view thereof; FIG. 8 is an enlarged top plan view thereof; FIG. 9 is an enlarged bottom plan view thereof; and, FIG. 10 is an enlarged view of portion ‘ 10 ’ shown in FIG. 3 thereof. The dash-dash broken lines in the drawings illustrate portions of the article that form no part of the claimed design. The dot-dash broken lines in the drawings indicate the portions shown enlarged in the drawings and form no part of the claimed design.