mobile

So I have android version 5.1 with the latest CyanogenMod nightly and my battery seems to drain extremely fast. About 5% a minute without the charger and 1-2% every 8-10 minutes with the charger. It over heats extremely fast even when I'm not using it for anything major I've checked my apps to see how much battery % they use I just don't get it I've had the phone for about 5 months and never had this isue . it started yesterday evening I had the viper one ROM installed so I thought that it was causing my issue so I flashed CyanogenMod and still have the same problem. I've tried letting it drain completely then charging it for 10 minutes then holding the volume up down and the power button for 2 minutes and even that didn't help. I just hope it isn't fried. Is there anything I can do or am I just completely 100% out of luck ?