The ornamental design for an electronic keyrechargingbox, as shown and described.
FIG. 1 is a perspective view of an electronic key recharging box showing my new design, with the door of the key box in an open position;
FIG. 2 is a front elevation view thereof, with the door of the key box in a closed position;
FIG. 3 is a right side elevational view thereof, the left side being a mirror image of that shown, and with the door of the key box in a closed position;
FIG. 4 is a top plan view thereof; with the door of the key box in a closed position;
FIG. 5 is a rear elevational view thereof; and,
FIG. 6 is a bottom plan view thereof, with the door of the key box in a closed position.
The broken line disclosure in the views is understood to represent portions of the article in which the claimed design is embodied, but which form no part of the claimed design.