Abstract: A removable battery pack is disclosed for a portable medical device, such as an automated external defibrillator. The removable battery pack interacts with the portable medical device using an electrical connector that creates a watertight connection. The connection is created by a gasket that is not compressed in the direction of movement of the removable battery pack. As a result, the gasket does not increase the force necessary to engage the removable battery pack in the portable medical device.

Abstract: Communication apparatus is disclosed that comprises a handset 100 that has an opening 182 in its lower end 180 and a base 200 that has a recess 220 that is shaped to accommodate the handset parallel to the base in either a face in or face out position, the recess having a securing element 300 in its lower end 225. The location of the opening in the lower end of the handset and the location of the securing element in the lower end of the recess is such that the securing element is in juxtaposition with the opening in the handset when the handset is placed in the recess in either the face in or face out positions.