IVIC 10400mAh High Capacity Power Bank Portable External Battery Charger Pack for Cell Phones & Tablets(Black) A capacity of 10400 mAh can fully charge an iPhone 6 about 3.8 times or a Galaxy S6 around 2.7 times. High input of 5V 2A - LHJ10400 can be fully charged in 6 hours, taking only half the time an external battery with a 1A input would Built-in short circuit, over-charge and over-heat protection allows for safe, fast and reliable charge while on the go LED's light up and work as charge indicators to show the power banks current battery level or charging status Hard metal casing with a slim compact design edges make it more comfortable to hold, while its small size means that it can be put anywhere conveniently.