Well, determining what is draining your battery is a process of elimination. Depending on how old your Razr is you could be experiencing an aging battery, but let's dismiss that possible cause for right now. If you have bluetooth, GPS or WiFi turned on but are not in an area where you can connect to any device/service to use those capabilities the phone may continue to "search" for a connection thus running down your battery. The other common culprit is a task killer...they will drain you battery and most often cause more problems than they are worth. Widgets that sync (via WiFi or data) can cause a drain if they are set to sync every minute or so. If you use Motocast or a cloud service like Google Drive, My Music etc, depending on your settings, your phone and that service can be syncing in the background without you knowing or realizing the constant exchange of information. If you stream video or music it will use significant battery over time. If none of the above fits then I recommend you download an app from Play Store like Watchdog (there are others) that will monitor and report what is running/using data on your phone. You'll need to install the app and let it monitor for several hours to get a good idea of the apps using battery and the data being sync'd. Hope this helps.
