... and digital products with USB function,eg.iPhone, iPad,PDA,MP3,MPS4,PSP,GPS.3.Good hand-feeling ... battery3. Then use mobile power to charge the phones, iPad, iPhone etc:A. Switch on the button, B. ... 1A USB socket to connect by USB cable and iPad connector.C. Charge the iPhone and other phones, ... any digital device which the voltage is 5V, such as: ipad, iphone3G, 4G, mobile phones, MP3, MP4, PSP, etc ...