We claim the ornamental design for a batting tee base, as shown and described.
FIG. 1 is a top front perspective view of the batting tee base showing our new design together with broken lines representing a batting tee mounted thereon;
FIG. 2 is a top front perspective view similar to FIG. 1 but shown without the batting tee;
FIG. 3 is a top, rear and right side perspective view showing the design together with a broken lines representing a mounting platform;
FIG. 4 is a top plan view of FIG. 3;
FIG. 5 is a rear elevational view of FIG. 3;
FIG. 6 is a front elevational view of FIG. 3;
FIG. 7 is a left side elevational view of FIG. 3; and,
FIG. 8 is a right side elevational view of FIG. 3.
The broken lines representing the tee and mounting base in FIGS. 1 and 3-8 are for illustrative purposes only and form no part of the claimed design. The broken lines shown in FIG. 2 are included for the purpose of illustrating elements of the batting tee base that form no part of the claimed design.