Xiaomi India — Complaint is about battery

Address:

Cuttack, Odisha, 754025

My redmi note 3/ 16 GB battery drains fast even as in staby mode like 1% in 5minute which was bought on 22.10.2016. So please reply me what to do. It is 7.5.3 version. When I bought it, drained the battery and made full charge and also repeated 2 times, but still happens the same problem. Where as my another mobile of other brand having same capacity battery (without battery saving mode) operates best as 300% more than redmi note 3 battery. I think you may got the problems. Please suggest or resolve.