The myCharge ADVENTURE ULTRA Rechargeable 13400mAh battery is up to 8X extra battery for the iPhone 7. It has 4 output ports: 1 AC, 1 USB-C, 2 USB-A; max output of 45 W; 2A, 20V input via DC 5.5mm. The intelligent display states what ports are on/off and when the max power is exceeded. 1) Smart-sense: ensures complete device compatibility, 2) Safe-cell: provides the highest level of battery safety, 3) Rapid-recharge: charges up to 50% faster than competitiors. Black/Gray