portable battery charger for iPhone 4 4S 1.2000mAh,5000mAh available 2.Fit for all devices with USB charging,such as iPod,MP3 ... 2000mAh 5000mAh portable battery charger for iPhone 4 4S,iPod,PSP,GPS,MP4...Number:MA8323Main ... automatically sleep,to prevent power lossA machine can be fit for all devices with USB charging,such as mobile phone,iPhone 4G 4S,PSP ...