... IC from Japan , Passed DROP test, a real safety product4.High quality baterry cells to Protection board PCM5. Exclusive design with piano ... iPhone 4S , iPhone 4 , iPhone 3GS, ipod touch,classic,nano, iPad,iPad 2 HTC Sensation XE XL ,Thunderbolt , EVO 3D ,EVO 4G ... °C7. Storing temperature: -20~50°C 2 in 1 mobile Power bank for iPad and iPhone