Aukey is authorized and certified by Qualcomm to use Quick Charge technology. Massive capacity: With 30,000 mAh, this power bank will accompany you on all your vacations and travels. The Quick Charge 3.0 output can charge compatible devices up to four times faster than conventional charging and is 45% more efficient than Quick Charge 2.0 technology. The AiPower output provides all devices with up to 2.4 A. You can charge the power bank via the Micro USB input with up to 5 V/2.4 A and via the Type-C input with up to 5 V/3 A.