Accumulators being batteries; Batteries and cells; Solar batteries; Battery boxes; Chargers for electric batteries; Electric cables for chargers; electrical power supplies; Loudspeakers; Wearable speakers; Thin film speakers; Portable speakers; Wireless speaker microphones; inverters for power supply; Radios; Telecommunication machines and apparatus; Battery chargers; Power distribution or control machines and apparatus; Rotary converters; Phase modifiers