I am fully satisfied with this powerbank . When I charge my phone with its charger it will take 80 min to cover 100 % . But when I connected with this powerbank it just take 60 min to cover it. I can charge my phone 2 times with this mi power bank. It is light weight and we can easily handle it. It has a great battery backup. After purchasing this wherever I go I will take this powerbank. It is very helpful to iphone user’s as iphone has low battery backup. It is slim and has a stunning design. In my opinion it is the best powerbank at 100000 mah. This powerbank will take 2-3 hours for full charge. I bought it for my uncle. It’s quite amazing powerbank I ever use