Accumulators; Accumulators and batteries; Acidimeters for batteries; Aerial cables for heavy currents; Amplifier for wireless communications; Anode batteries; Antennas for wireless communications apparatus; Apparatus for wireless transmission of acoustic information; Audio cables; Batteries; Batteries and battery chargers; Batteries and battery chargers for intravenous fluid delivery apparatus; Batteries for lighting; Batteries for pocketlamps; Batteries for use in hearing aids; Batteries for...