Device battery charger

FIG. 1 is an isometric view of a bottom, back, and left side of an embodiment of an ornamental design for a device battery charger;

FIG. 2 is an isometric view of a top, front, and left side of the device battery charger of FIG. 1 ;

FIG. 3 is a top plan view of the device battery charger of FIG. 1 ;

FIG. 4 is a bottom plan view of the device battery charger of FIG. 1 ;

FIG. 5 is a right side elevational view of the device battery charger of FIG. 1 ;

FIG. 6 is a left side elevational view of the device battery charger of FIG. 1 ;

FIG. 7 is a front elevational view of the device battery charger of FIG. 1 ;

FIG. 8 is a rear elevational view of the device battery charger of FIG. 1 ;

FIG. 9 is an isometric view of a bottom, back, and left side of an alternative embodiment of the device battery charger of FIG. 1 ;

FIG. 10 is an isometric view of a top, front, and left side of the device battery charger of FIG. 9 ;

FIG. 11 is a top plan view of the device battery charger of FIG. 9 ;

FIG. 12 is a bottom plan view of the device battery charger of FIG. 9 ;

FIG. 13 is a right side elevational view of the device battery charger of FIG. 9 ;

FIG. 14 is a left side elevational view of the device battery charger of FIG. 9 ;

FIG. 15 is a front elevational view of the device battery charger of FIG. 9 ; and,

FIG. 16 is a rear elevational view of the device battery charger of FIG. 9 .

The broken lines are for the purpose of illustrating environmental structure and form no part of the claimed design.