A battery pack device including a housing, a plurality of electrical contacts, a plurality of electrical connectors, a moveable control device, and a battery. The housing may have a chamfered edge. The plurality of electrical contacts may be carried by an outer surface of the housing. The plurality of electrical connectors may be carried within the housing. The moveable control device may be adapted to position at least one of the plurality of electrical connectors through an aperture located in the housing when activated. The battery may be contained within the housing and in electrical communication with each of the plurality of electrical connectors and the plurality of electrical contacts.