Portable Power Supply

FIG. 1 is a front perspective view of a portable power supply showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation 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; and,

FIG. 9 is an enlarged view of the area 9 shown in FIG. 1 .

The broken lines illustrate portions of the portable power supply and form no part of the claimed design.