a unitarily molded , snap - on heat shield for a standard automotive battery container having handle brackets extending from opposing side walls of the container , the heat shield having wedge - shaped coupling protrusions extending inwardly from cantilevered flaps in the heat shield side walls , the wedge - shaped protrusions riding along the handle brackets to cantilever the flaps away for the container side wall as the shield in moved downward over the container , the flaps snapping back inward toward the battery container as the protrusions pass the handle bracket to couple the heat shield to the battery container .