The present invention relates to a charging technique used in a battery, a charging device, and an information-processing system. The assembly provides a catch member which is mechanically connected but a separate component from the drawer handle. The blade element helps define an aperture that allows access to the interior hollow portion of the tubular portion. Each of the image indication fields 53 shows a divided conceptual image that will form a complete conceptual image when the four cards are deployed in a predetermined layout.