Batteries, electric; Cell phones; Cellular phones; Chargers for electric batteries; Headphones; Mobile telephones; Portable media players; Power supplies; Renewable battery system to provide backup power; Telephone apparatus; Telephone sets; Telephones; Computer hardware for communicating audio, video and data between computers via a global computer network, wide-area computer networks, and peer-to-peer computer networks; Computer network adapters, switches, routers and hubs; Electric wires a...