Multi-charging Base of POS

FIG. 1 is a front elevational view of a multi-charging base of POS showing our new design; FIG. 2 is a rear elevational view thereof; FIG. 3 is a left side elevational view thereof; FIG. 4 is a right side elevational view thereof; FIG. 5 is a top plan view thereof; FIG. 6 is a bottom plan view thereof; FIG. 7 is a front perspective view thereof; and, FIG. 8 is a rear perspective view thereof. The broken lines in the drawings illustrate portions of the multi-charging base of POS that form no part of the claimed design.