HyperJuice 1.5 222Wh (61,000mAh) External Backup Battery for MacBook/iPad/USB Devices HyperJuice Expand is an expandable battery pack system that consists of a main HEAD unit that can magnetically connect to battery CELL units of various sizes (1-4 cells, 3000-12000mAh). Capacity: 6000mAh, Battery Chemistry: Lithium Ion, Output Power: 18W (5V, 3.6A) shared across 3 USB ports, Input Power: 10W (5V, 2.1A), Time to full charge: 2-3 hours. Compatibility: iPad 1st/2nd/3rd/4th/Mini/Air, iPhone 3/3S/4/4S/5/5c/5s, any USB Device. HyperJuice Expand comes with 3 USB ports that can recharge up to 3 USB devices (2 x iPad/tablets and 1 x iPhone/smartphone) at the same time. HyperJuice Expand can be recharged quickly via fast 10W micro USB and comes with a 5 stage LED battery indicator.