... , 5000mah, to make sure 500 times above charging cycle..2. Two USB output socket, can also charge iPhone , iPad ... li-ion polymer core, rechargeable, 500times above charging cycle,2. Hard plastic shell, white color,3. The battery capacity ... light , and will switch off when it is filled.2. How to know the mobile power electricityPress the buttons ... as: ipad, iphone3G, 4G, mobile phones, MP3, MP4, PSP, etc