I have been consistently seeing higher than expected screen on as well as OS Keep Awake time, compared to my actual usage. I've been through about 70% standard battery in 6.5 hours with relatively light use, a few texts, check emails, light web browsing. I have screen timeout at 15 seconds and estimate I used the phone less than 30 minutes during this period. My screen shows 1 hr, 8 minutes on and my OS Awake time is 2 hour 25 minutes (CPU Totat 33 minutes).
Both of these seem to be drastically more than my actual usage. I have tried various applications, System Tuner, Watchdog and CPU spy over the last two weeks (period of poor battery) and I just don't know enough to effectively analyze what may be going on. The only takeaway I have that seems interesting is it shows my CPU in the 350MHz state for 24% of the time over the last 15 hours. Much of that was overnight when I wasn't doing anything. Something seems to be keeping the phone awake (albeit at the lowest CPU level).
"Where's my Droid Power" doesn't show any applications using more than about 3% (Nova Launcher and Swype). Big users are of course Screen 45% and OS 23%.
Phone is stock, unrooted 4.02. Any thoughts on how I diagnose what is going on. Keep in mind I'm 50 years old and probably more senile that I am tech savvy at this point.