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For an overview of the fusion core in the Fallout series, see fusion core.

The fusion core is an ammunition type in Fallout 76.


Standardized fusion cores are a high-grade, long-term nuclear battery used for military and commercial applications before the Great War.[1] Used by civilians to power a multitude of devices, from automobiles,[2] to generators,[3] the military instead used them for warfare, supplying power armor and some Gatling laser models with energy. Standard core interfaces were developed across the board to allow for power armor frames to use cores salvaged from weapons or generators.[4] The fusion core also can be hooked up to certain melee weapons via jumper cables.[5]

Another benefit is that cores can be set to overload, for use as improvised explosives or to deny a power armor suit to the enemy by destroying it.[6]


Fusion cores are used to power and activate suits of power armor and as ammo in certain weapons, such as the Gatling laser, which utilizes fusion cores as its ammunition; each core provides 500 shots.


Icon range
Icon level
Fusion core (1)
Fusion core (2)
Icon range
Icon level
Ultracite fusion core (2)

Weapon/armor using this ammunitionEdit


Fusion cores can be found or created. There are currently 5 ways to obtain them:

  • Scavenge for power armor: On every suit of power armor, one will find a fusion core at half charge.
  • Search for fusion generators: Every once in a while, player characters will stumble on a fusion generator, inside there may be a fusion core, if not, they may wait for one to spawn.
  • Craft them: Player characters can craft fusion cores at chemistry stations if they have the right components.
  • Create them: Providing 100 power to a fusion core processor found at one of the power plants generates 1 fully charged fusion core every 10 minutes.
  • Destroy robots: certain models of robot, such as sentry bots, will always drop a fusion core on death.


PCIcon pc Playstation 4Icon ps4 Xbox OneIcon xboxone Before patch, fusion cores would replenish to full charge upon joining another world.[verified]


  1. The Sole Survivor: "I'll help if I can."
    Preston Garvey: "What you'll need is an old pre-war F.C., a standardized Fusion Core. Your high-grade, long-term nuclear battery. Used by the military and some companies, way back when. And we know right where to find one..."
    Sturges: "But we can't get to the damn thing. It's down in the basement, locked behind a security gate. Look... I fix stuff. I tinker. Bypassing security ain't exactly my forte. You could give it a shot."
    (Preston Garvey's and Sturges' dialogue)
  2. Berkeley Springs terminals; Dr. Barnaby's Terminal, Medical Notes 10.31.77
  3. The Sole Survivor: "What're you looking for again?"
    Preston Garvey: "A Fusion Core. It's kind of a fancy battery. They used one here in the museum to power the exhibits, a long time ago. There's one in the basement, behind a security gate. You'll need to pick the lock or hack the computer to open it."
    (Preston Garvey's dialogue)
  4. Sturges: "That armor may be old, but it's got a standard interface. Just jack the Fusion Core in."
    (Sturges' dialogue)
  5. Electro-Fusion modification for the Hatchet
  6. The Sole Survivor: “The damage... it's deliberate. They set the fusion cores in their armor to overload. That's what caused the blast. But why?
    Spoken during The Lost Patrol

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