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Fallout 3 Hints
Fission Battery
* Zone 9 underground metro: in Falls Church/Mason Dst Metro (1) & in Franklin Metro Utility (19)
* Rivet City (Zone 9/64): in Broken Bow (11)
* Fort Independence (Zone 8/4): in Fort Independence (3) & in Lower Level (6)
* Bethesda Ruins (Zone 6/8): in Offices West (3) & in Underworks (3)
* Robot Repair Center (Zone 6/3): in Robot Repair Center (3) & in Mechanist's Forge (3)
* Fort Constantine (Zone 1/4): in Personnel Offices (2) & in Launch Control Bunker (3)
* Hubris Comics (Zone 9/16): in Printing (5)
* National Guard Depot (Zone 6/12): in National Guard Depot (5)
NOTE: If you have the Point Lookout add-on game installed, you can get lots of fission batteries there. Due to a local misc. quest requiring fission batteries, most containers in the region have a good chance of randomly having them.
