... means 30%, 70% and 100% of the power remaining inside of the battery3. Then use mobile power to charge the phones, iPad, iPhone etc:A ... USB socket to connect by USB and corresponding connector of the mobile phone. 3. The mobile power can charge any digital device which ... the voltage is 5V, such as: ipad, iphone3G, 4G, mobile phones, MP3, MP4, PSP, etc Portable power bank 5000mAh 2 ...