Is anyone else experiencing charging & battery problems w/their Motorola Droid Razr Maxx on ICS? I got it last night, and the first time I charged it I used the charger that came with the phone and it went up to 100%. I then unplugged it around 1:30 AM and went to sleep (the phone went to sleep, too). When I woke up at 8:30 AM, the battery had drained down to 20%. I haven't downloaded a task killer app yet, so I was thinking that that may be the problem: too many apps were running in the background and using power. Now I am trying to charge it with an old mini USB-cable I have at work, and it is not charging the phone at all, not even with it being turned off. The battery level indicator keeps showing 0%, and the USB cable is plugged into the wall, not a computer.
Should I only be using the charger that came with the phone. If so, then how does it explain the quick battery drainage overnight? Was it due to the lack of a Task Killer app? Please help!