Fission battery

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A fission battery is a miscellaneous item in Fallout 3 and Fallout: New Vegas.


While the exact makeup of the fission battery is not canonically known, it can be inferred from the name that it is a portable power source that derives its energy from nuclear fission. While it may be tempting to assume that it is a tiny nuclear reactor derived from some miraculous, futuristic pre-war technology, the sheer technological difficulty of miniaturizing a fission reactor to such an extent is so tremendous that it renders this theory implausible. It is more likely that fission batteries are a form of RTG, although if this is true they must employ a material with an extremely long half-life as they continue to function more than 200 years after being manufactured. It may be that fission batteries are stocked with a stable isotope that is only incited to decay when it is required to generate power, perhaps by controlled neutron emission – not a true nuclear reactor, but still more sophisticated than a simple RTG. Fission batteries probably also contain some sort of acid, as they are an ingredient in moonshine.


In post-war society, the fission battery has taken on the role of an on-hand generator. Throughout the Mojave Wasteland, fission batteries can be found in New Vegas streets, remote shacks in the wastes, and reoccupied suburban homes. They are used for powering a wide range of devices, like street lamps, electronic signs, light-bulbs, and other household appliances and are easily scavenged from the common robot or appliance store, making it invaluable to the common wastelander in the absence of a reliable power grid.


Fallout 3Edit

Fission batteries are located throughout the Capital Wasteland, The Pitt, Point Lookout and Adams Air Force Base, usually in toolboxes or destroyed robots.

Fallout: New VegasEdit


Fallout 3Edit

  • Reilly's Rangers
    • A fission battery is required for fixing an access elevator during the quest, at the top of the Statesman Hotel. One can be found inside the hotel, but it is much easier to keep one extra in your inventory and bring it along for the quest.
  • A fission battery is used in the construction of the railway rifle.
  • A Spoonful of Whiskey
    • 6 fission batteries are required for the Point Lookout repeatable quest.

Fallout: New VegasEdit


  • Numerous oversized fission batteries can be found hooked up to streetlights in Fallout: New Vegas. These are apparently used to power their respective streetlights, and cannot be picked up or used for anything else, only as a component of appearance.
  • Another oversized battery can be seen in front of Doc Mitchell's house.
  • Many oversized batteries can be found attached to portable lamps in various dungeons, such as Vault 22. These may not be taken and only serve as a cosmetic effect.
  • The base price for fission batteries is 75 caps, so they can be sold for a large profit to vendors both in Fallout: New Vegas and Fallout 3.

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