I'm a new player of Fallout 3 and having a great time with this game. But I got stuck because I can't find the Fission Battery to repair the elevator on the roof of the Statesman Hotel. It should be in a maintenance room on the third floor, I searched the hotel for a very long time but with no luck. The fact that there is nowhere a sign telling me on which Floor I am doesn't help. Hope that one of you can guide me to the location of that battery.
Thanks in advance,
Willem