This is a good product it has more capacity of charge and more capacity of battery backup I have also a power bank of mi 2i that is so good product my all class friends have also a power bank of mi 2i power bank so I advised you , you must buy a power bank of mi for mobile charge and better batter backup it is very useful and garunted product I can say it is not only a good product it is a excellent product I want to say you buy power banks only of mi which is very useful and easily removal and safety policy is available