POWER BACK BATTERIES

portable electrical power supplies marketed to individual consumers for charging and powering mobile electronic devices, electronic tablet devices, MP3 audio players, E-readers, cellular telephones, laptop computers, digital cameras, CPAP machines for treating sleep apnea, display monitors, digital televisions, miniature refrigerators, low-wattage appliances, low-voltage appliances, and electric fans; portable audio entertainment systems comprised of an audio amplifier, speakers, and a rechargeable power supply