Motorola Droid 3

When I use the testing menu to get there (as you describe) it says "CDMA auto (PRL)" as yours. The only change I made to mine was in the mobile network off of the setting menu. Setting that to CDMA only made a world of difference. Everything else is pretty much stock...you CAN change background data and some things like that. You CAN go in and add things to the auto-kill list in the moto task manager that ships with it (works a LOT different than the auto kill in most task managers, though), but I haven't bothered to do any of that.

Oh, I did turn off wifi. It does attempt to auto-connect if it sees an open wifi (because wifi is less battery intensive than 3G, but constantly scanning for wifi is a drain, and that can cause data connectivity problems if the "open" wifi isn't really open after all (at work we have an open wifi that doesn't ask for a password until you open a browser. So your phone thinks it's on wifi, and can't get any data...) On the other hand, I turned bluetooth on, and I do use bluetooth for most of my calls, but that still turns on the display for caller ID purposes when a call comes in, so that shouldn't be any different than the display usage without bluetooth. (since it uses the proximity sensor to turn off the display when it's against your face).

Are you running some sort of task killer? I know on Froyo, those are pretty universally regarded to have a detrimental effect on battery life, and I can't imagine that Gingerbread is that different, in its core garbage collection (if anything, it should be MORE efficient than Froyo) (just as an aside, the recent apps which shows you running apps, on froyo would only show you 8 (although I guess it depends on your launcher), but on the D3, it just keeps showing more and more, I've seen more than 12....)

I did notice that after the initial charge, when it dropped to 15%, it stayed there for like 3 hours before it dropped to 10%....I let the battery completely die before putting it back on the charger, and after than, it seemed to have a much better idea where the percentage actually was. Even that feels a lot like I'm grasping at straws though....I guess I just have to say, your mileage may vary, but that's my experience....