Light user here. Phone was off for a couple of hours. I keep my brightness around 9 percent. I also shut off my screen whenever I can. I use smart actions and I have an aggressive battery saver setting that turns off almost everything whenever the screen is not on.
Sent from my DROID RAZR using Android Central Forums
No. You need to get into recovery by first turning off your phone than holding the volume +/- rocker down while pressing the power button. Go down to recovery then volume + to select "recovery". I think you will get a droid lying on its back. Push both volume +/- then scroll down to wipe cache and select by pushing the power button.