electrical contacts 111 114 can be spaced apart from the central electrical contact 115 by a sufficient distance to prevent the device side portion from tipping and thereby becoming disconnected from the interface portion of the base portion not shown in preferred embodiments the center of the central electrical contact 115 separated from the center of each of the radial electrical contacts 111 114 by u00be u2033 of an inch or greater the spacing is most advantageously u00be u2033 or 1 u2033 or greater although other spacings including spacings of less than u00be u2033 will also provide the benefits of this invention the mating electrical contacts of the interface portion 120 can have a corresponding spacing the device side portion 110 can be part of the chassis or main body of an electronic device alternatively the device side portion 110 can be part of a case for an electrical device in embodiments of the invention where the device side portion 110 is part of a case for an electrical device the electrical contacts 111 115 can connect to a port of the electronic device such as a charging port of the electronic device in embodiments where the device side portion 110 is part of the chassis of the main body of an electronic device the electrical contacts 111 115 can be directly connected to the circuitry of the electronic device such as a charging circuit for a battery of the electronic device fig5 is an isometric view of an inside surface of a device side.