It has as many as 2 USB charging sockets , thanks to which you can charge up to 2 devices at the same time. An ideal solution in an emergency when it is necessary to charge a smartphone and e.g. a tablet. Power Delivery and Qualcomm 3.0 are two fast charging technologies that guarantee that the connected mobile device will be charged very quickly. In a situation where your smartphone is discharged and you need to use it immediately, this solution is invaluable. 20000 mAh capacity is enough to charge approx. 8x battery in a smartphone, 3x battery in a 10 inch tablet and 4x battery in a 7 inch tablet. 20000mAh capacity provides up to 135 hours of extra power.