Battery Housing Base

FIG. 1 is a perspective view of the ornamental design of a battery housing base, showing said design with shade lines and broken lines.

FIG. 2 is a front elevation view of the design of FIG. 1 .

FIG. 3 is a rear elevation view design of FIG. 1 .

FIG. 4 is a left side elevation view design of FIG. 1 .

FIG. 5 is a right side elevation view design of FIG. 1 .

FIG. 6 is a top view design of FIG. 1 ; and,

FIG. 7 is a bottom view design of FIG. 1 .

The broken lines shown in the drawings show portions of the battery housing base which form no part of the claimed design.