FIG. 1 is a front, top, and right side perspective view showing our new design for a battery charger housing;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken line showings in FIGS. 1-5 are for illustrative purposes only and form no part of the claimed design.