I have a Droid X running Android version 2.3.3. My battery run-time has gone down about 50% over the last week. I have three batteries and this drop occurs with all three. Now, I get about 6 hours of run-time per battery before I have to switch to a new battery or charge the battery in the phone. I have not changed any of my settings or added any apps in the last week. Blue-tooth, WiFi and GPS are off. The brightness on my display is set for about 30%.
Main Battery Usage is as follows:
Phone idle 19%
Cell standby 14%
Android OS 4%
What could be causing this sudden decrease in battery run-time and how do I correct it?