Google play services bug!
I read a lot of people's suggestions about joining the beta program of play services. I did that and still nothing has happened. Battery life isn't bad but it drains a bit too fast. I haven't charged it to 100 and drained it completely though. But in day to day usage i have noticed battery has been quite a bit worse since this play service bug. ( Normally i charge it to 80-85% and then plug it in after it's less than 20)