Fusion core (Fallout 4)

Fusion core is an item type in Fallout 4.

Characteristics
Fusion cores are used to power and activate pre-War suits of power armor. The gatling laser also utilizes fusion cores, each core providing 500 shots. Each core provides roughly twenty minutes of power armor use based on activity; sprinting or utilizing V.A.T.S. causes the power to drain much faster, whereas walking consumes less power and remaining stationary drains none. Fusion cores have a total charge of 100.

Fusion core lifespan can be extended by 10% by collecting the Repair bobblehead, and by up to 100% by investing points in the Nuclear Physicist perk.

Locations

 * One can be found in the Museum of Freedom's lowest floor, Sturges asks the player character to retrieve it, but can be taken without getting the quest nonetheless.
 * Another is in ArcJet Systems in the room where the player character can restore power to the elevators.
 * One can also be found in the mole rat den under the Red Rocket truck stop.
 * Up to five can be found in Recon Bunker Theta, during the mission to recover the Brotherhood holotapes in "The Lost Patrol".
 * One can be found in the office of Cambridge polymer labs, either by picking the master lock or successfully finishing the laboratories research.
 * Four can be found inside a locked ammo box on the second floor of the Cambridge polymer labs.
 * One is located in Mystic Pines (Northeast of Lexington) in a room towards the back. The door to this room is locked (Advanced) and requires 1 point in Locksmith perk to pick.
 * One can be found at the Starlight Drive In in the building behind the screen, with a locked (Novice) door.
 * In College Square, inside trash bin behind the building by side some kind of big eletric power black box.
 * Up to five can be found in The Castle's armory (including from The Sarge sentry).
 * Three can be found at Greenetech Genetics on the top floor, two behind a security door locked at master level, and one behind a door further on locked at advanced level.
 * One can be found on the main road north of Poseidon Reservoir at a military checkpoint, in a power armor.
 * One can be found east of Finch Farm, in the pump station across the river. Pass code is written on the wall, below the door.
 * Erin Combes will give one for finding Ashes in the quest Here Kitty, Kitty.
 * Two can be stolen off suits in the The Prydwen's maintenance bay by sneaking behind them. Note if Paladin Danse is nearby - he will disapprove of this.
 * Four can be found in an ammo box in a master level locked trailer at Fiddler's Green Trailer Estates
 * Two can be found at the lake gift shop in a suitcase during the mission where you fight a group of raiders to liberate a village.
 * One can be found inside a waystation when following Dogmeat during the Reunions quest.
 * Four can be stolen inside an ammo box from Elder Maxson's chambers
 * One can be found in the church of the Quincy ruins.
 * One can be found inside the Wreck of the FMS Northern Star.
 * Two can be found on a sentry bot inside a cage, just a short walk N/W of Somerville Place
 * One can be found south of the elevator on the bottom level at Malden center
 * One can be found behind a mag-locked door (aka unpickable; unlocked via terminal right above it) in the Mass Fusion containment shed. The area is heavily irradiated, so be sure to bring plenty of Rad-X and RadAway.
 * One can be found in The Railroad's HQ escape tunnel near the exit behind a security gate.
 * Four can be found in the abandoned town of Forest Grove marsh, on the roof of bombed out building, look for a flashing red light, the light should be visible from pretty much anywhere outside the town.
 * One can be found under the Slocum Joe's where the Railroad's old HQ is. The fusion core is best accessible from the escape tunnel.
 * There are 3 fusion cores inside Four Leaf fishpacking plant, 2 inside (one of them behind a mag-lock door) and one on the roof of the building.
 * At least one can be bought from Proctor Teagan on The Prydwen
 * One can be found in chest near the robot in the center of the Robotics Disposal Ground
 * Four can be found at Hardware Town.
 * One can be found in the eastern hut at Weston water treatment plant.

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