I claim the ornamental design for a vehicle charger, as show and described.
FIG. 1 is a perspective view of a vehicle charger showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a right side elevation view thereof;
FIG. 4 is a top plan view thereof; and,
FIG. 5 is a bottom plan view thereof.
The rear elevation view is a mirror image of the front elevation view.
The left side elevation view is a mirror image of the right side elevation view.
The broken line showing of various regions in the Figures, including the unshaded areas therein, is for illustrative purposes only and forms no part of the claimed design.