I claim the ornamental design for a packaging for retractable mobile charger, as shown and described.
FIG. 1 is an exploded perspective view of the packaging for retractable mobile charger, showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is an inverted top plan view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a front elevational view thereof; and,
FIG. 7 is a rear elevational view thereof.
The broken lines showing a retractable mobile charger in FIG. 1 are included for the purpose of illustrating the invention in use, and form no part of the claimed design. The other broken lines are included for the purpose of illustrating a portion of the packaging that forms no part of the claimed design.