But from past 2 months i am having lots of battery drain due to mobile standy. So i cannot comment on battery
on my phone as of now. However I am currently running CM12 (5.0.2) with F4k kernel. It is superb.
CM12.1 (5.1.1) gives me bad perfomance in games and average battery life.
But CM12 (5.0.2) is really good. Using it since last tuesday.