Razr to Razr
I see the same thing with my report on battery. I think it's the Super Amoled (I don't know how to spell it) screen that does it. I don't know why. My android OS takes up very little battery and so does everything else. The screen is a power glutton on the battery I guess.
I'm also having trouble with battery drain. I don't know If a FDR is necessary in my case because of the steps I had to take for the update to install on my phone. The update kept failing so I had to do a FDR to even get the update to install. Since I reset before the update, is a reset still needed after updating? My battery drain isn't bad but if im using a web browser I may only get 4hrs or so. If I just take calls and text moderately it will last all day.