Mi power bank 2i 20000 Mah is the best power bank I have ever use, I have started using it from 2017 oct till now 2019 sept.
But it is still good to use.I use Mi y2 phone and I can charge 5 times fully.
I love to use Mi Power Bank 2i 20000.
It is good, use it and know how comfortable it is.
I fully support Mi Power Bank 2i 20000.