The ornamental design for a rechargeablebattery, as shown and described.
FIG. 1 is a front, top, and left side perspective view of a rechargeable battery showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is an enlarged partial view of the rechargeable battery in the area of arrow lines 6-6 of FIG. 1;
FIG. 7 is an enlarged partial view of the rechargeable battery in the area of arrow lines 7-7 of FIG. 4; and,
FIG. 8 is an enlarged partial view of the rechargeable battery in the direction of reference arrow 8 of FIG. 1.
The dashed broken lines shown in the figures illustrate portions of the rechargeable battery that form no part of the claimed design, and the dot-dash broken lines shown in the figures represent unclaimed boundaries.