FIG. 1 is a top, front, right side perspective view of a first embodiment of a battery charger;
FIG. 2 is a top, front, left side perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left-side elevational view thereof;
FIG. 6 is a right-side elevational view thereof;
FIG. 7 is a top plan view thereof; and
FIG. 8 is a bottom plan view thereof;
FIG. 9 is a top, front, right side perspective view of a second embodiment of a battery charger;
FIG. 10 is a top, front, left side perspective view thereof;
FIG. 11 is a front elevational view thereof;
FIG. 12 is a rear elevational view thereof;
FIG. 13 is a left-side elevational view thereof;
FIG. 14 is a right-side elevational view thereof;
FIG. 15 is a top plan view thereof; and,
FIG. 16 is a bottom plan view thereof.
The broken lines shown in the drawings depict portions of the battery charger that form no part of the claimed design.