The Dyconn XCharger 7800 is a portable 7800mAh battery bank for all your mobile devices and accessories. The XCharger 7800 charges two devices at the same time at 1 amp each port. For a super fast charge, use 1 USB port for a 2.1 amp boost (iPad rapid charge). As a measure of convenience, the XCharger 7800 features four bright LED lights that serve as a battery indicator to show the amount of charge left in the unit and shuts down when not in use to save power. Accessories include a synch cable for Apple devices, micro USB and mini USB cables.