Mi is a good company in india .
It is a good power bank but not very best .I use it for a year.Its stock usb cable was damaged with in 1 month I dont know how .
I is looking so nice as a metal body but its performance is not satisfied .
I also have intex 10000mah li-polymar power bank and it has a better battery performance than mi power bank .
But overall it is a good power bank.