The 11,200mAh EXECUTIVE USB POWER BANK is a Li-ion Power Bank that will simultaneously charge your USB devices (iPhone, Android phone, iPad, tablet PC, camera, iPod,MP3/4, games, PDA, PSP, GPS, etc.) multiple times.  The Power Banks intelligent design correctly interprets and adjusts for your devices' voltage & current requirements and has built-in short circuit protection. The Power Bank can be recharged over 500+ times and features a 6 month shelf life.  The blue backlit digital LCD display indicates the power bank’s % of charge, the USB ports in use, and the power requirements for your device.  Automatic shutoff when power bank is fully charged.  The Pella logo is imprinted on the top of the battery.