Just got this a few days back. Battery is amazing after optimizing every setting in miui, no backlit buttons, no keyboard vibration etc.. auto & moderate-low brightness, mostly on wifi connection. So impressive.

Performance also top notch to me. It's the dream phone turned reality for me. Cannot imagine what 820 in mi5 must be like...



P.S - Apparently don't do this (drain the battery) more than a few times or avoid it completely. Li-Po/li-ion batteries don't do well at full charge & full discharge, temperature dependent by quite a big margin too. The source might be outdated or over-exegerating with really lousy batteries. Source: http://batteryuniversity.com/learn/article...based_batteries

It seems Xiaomi has tuned the battery management according to Security app voltage report. But there may still be some situations you can try to avoid to further prolong long term battery life.

This post has been edited by andrew9292: Dec 7 2016, 12:29 AM