Carrying cases, holders, protective cases and stands featuring power supply connectors, adaptors, speakers and battery charging devices, specially adapted for use with handheld digital electronic devices, namely, cell phones, MP3 players, personal digital assistants; Crystalline silicon solar cells; Headsets for cellular or mobile phones; Photovoltaic solar modules for production of electricity; Power supplies for lights, sirens and public address systems; Power supplies; Rechargeable electri...