For this power bank, currently with quite good feedback from customers, for this model, 5V/2A input, power bank could be fully charged around 4.5 hours with 10050mAh, output: 1 with QC3.0, the other is 5V/2.4A, could be a good selling point, we also passed the Qualcomm 3.0 testing. Based on this model, you could choose the version without QC3.0. For your better reference, here attached the ecatalogs for your better checking.