MM quite good in terms of batt life if i just touch my phone periodically, wifi running and did a few tweaks through LSpeed app, i also greenify quite a few background apps to save on batt. i did a full wipeout unintentionally when I flash the MM firmware, because of the CSC file >.<

though 1 thing, whenever battery hit 15% or lesser, battery will kong damn fast, and if I try my luck and restart the phone say at around 10% battery, confirmed phone restart and then immediately show me the 0% sign, auto shut down and I have to charge it.
during LL times I had no issues like this, wonder if anyone similar issue?