Abstract: A dual actuating shutter safety system for a power supply interface having a housing having a plurality of apertures that provide access to conductive contacts for a first conductive prong and a second conductive prong such that when the prongs contact the conductive contacts, an electrical connection is made therebetween. The system includes a first resilient member and second resilient member that are each rigidly affixed within the housing, and each resilient member has a proximal non-conductive segment that is resiliently held in an aperture and a distal conductive segment that is resiliently held within the housing, whereby the non-conductive segment must be forced aside before the conductive segment of the resilient can be contacted.

Abstract: This invention is a battery charger having a pocket for charging a battery. The pocket is covered by a door which has a battery retention latch. When the door is open, and a battery is inserted into the pocket, the battery retention latch of the door exerts force upon the battery in a direction towards the charging contacts located in the base of the pocket. In so doing the door and battery retention latch hold the battery against the charging contacts, thereby enduring a good electrical connection. The battery retention latch also has a convex detente which keeps the door closed when no battery is present. Additionally, the charger may have a pocket for charging a phone and battery combination as well.