I have a Razr Maxx....
-From the home screen select the menu button
-Select manage apps
-In the all tab, ChargeOnlyMode was found (This was when I was using ICS, I no longer see this on JB) maybe it is the new code that got rid of it or maybe it is only
there if it is active?
In scanning through the ROM's file system, I do not see this file, although I suppose it could be a process by another application... Probably Motorola specific, I will check out my son's Bionic and see if I can make a comparison this weekend.