Apparatus for recording and reproduction of sound, images or data; Apparatus for recording, transmission, processing and reproduction of sound, images or data; Audio cables; Batteries and battery chargers; Batteries and battery chargers for intravenous fluid delivery apparatus; Battery cables; Battery chargers; Battery chargers for use with telephones; Blank magnetic data carriers; Blank optical data carriers; Broadband power line communication systems for transferring broadband data over ele...