The ornamental design for an endcap for a battery pack, as shown and described.
FIG. 1 is a perspective view of an end cap for a battery pack showing our
new design.
FIG. 2 is a side elevational view of the end cap shown in FIG. 1. In side
elevation, the pack is symmetrical about its longitudinal axis. All side
elevational views of the cao regardless of the line of sight are
identical; and,
FIG. 3 is a top plan view of the end cap of FIG. 1.
In the above Figures, the use of broken lines is for illustrative purposes
only to show the environment of the invention. The material shown in
broken lines does not form part of the claimed design.