INSTRUCTIONS
1)I flashed the latest Mokee rom (Release version-272 MB) on my Device.
2)Flashed the Powersaver thermal config Mod.You'll find it at the end of this post.
3)I installed Trickster Mod Kernel setting APK from the play store and I did below modifications to it
a)Set the CPU max and min frequency to 300MHZ and 1094 MHZ.Turned on the CPU frequency lock.
b)Governer set to ONDEMAND and schedular to ROW.
c)Turned on MP-Decision,Set Multicore Power saving mode to 2 and turned on temperature throttle.
d)Set the GPU max frequency to 320 MHZ and governor to ONDEMAND .
(Set it to 450MHZ if you game a lot however it donot cause serious battery changes as per my observations)
4)Install greenify from Play store and hibernate most of the apps That causes cpu wakes (I greenified all downloaded apps )
5) Thats it you are ready to get most out of your redmi's battery
DOWNLOAD LINKS
Trickster mod link : LINK
Greenify : LINK
Mokee rom (Chose latest Release version-271.91 MB) : LINK
Thermal Patch : LINK
PROOF
Credits : gpreetham (xda forums)