A power supply contact is mountable on a base of a device having a geometry for receiving a power supply and for surface installation of a printed circuit board. The power supply contact includes a base plate mountable on the base of the device, a rail extends upwardly from the base plate, a power supply terminal and an adaptor connecting the rail to the power supply terminal. The rail is in electrical contact with the printed circuit board and the power supply terminal is in electrical contact with the power supply when the printed circuit board and the power supply are installed in the device.