There is something odd going on that I noticed the last 2 days. I work 12hr nights and just keep my phone on a charger while at work (streaming music). Two days ago I left work at 100% batt, went home slept, used the phone a couple of times, returned to work and noticed the battery was at 51% (horrible for virtually no use in 12 hrs). This is even worse when you consider I had the phone programmed to recognize that I sleep from the moment I leave work until I return to work. So to try to do something about the high drain for the same sleep cycle today, I shut off the phone briefly, turned it back on, put the GPS in normal location mode vs high accuracy, disabled a couple of meaningless apps from notifications, and went to sleep with the phone facing down instead of facing up like I did the previous night. Tonight the battery was at 91% when I arrived at work.
So, now I will change up a few of the variables (esp. the GPS and phone facing up vs down while I sleep) one at a time until I find which one(s) created the previous huge drain. I'll report back what I find...