Fusion Core Locations

Fusion Cores are the Power Armor's batteries. They'll be drained as long as you use any power armor so make sure to treat them as rare valuables. This page will be updated on the location of fusion cores that you can find in the game. Take note that some ammo boxes might contain multiple fusion cores; these seem to be one-time loot only since if the area "resets" and its loot containers refilled, you'll get random ammo instead.

Mole Rat Den, Red Rocket Truck Stop

First things first! As early as now, you can get a Power Armor (one of the better armors in the game). First, we have to get a Fusion Core necessary to power up the suit. From your starting position in Vault 111, head southeast to reach the town of Sanctuary. From there, continue past the bridge and follow the road to reach the Red Rocket Truck Stop. (Dogmeat is there but you can ignore him for now). There should be a hole on the ground leading to the Mole Rat Den. Ready your weapon and enter it. Once inside, turn to the immediate right and look for the Fusion Core on the ground. Pick it up and leave the den immediately.

Fallout 4 Guide Video

Basement, Museum of Freedom, Concord

You can access the museum as part of the second main quest. You can get this by either lockpicking or hacking the nearby terminal.

Basement, USAF Satellite Station Olivia

Look for the generator in the basement of the area. It should be immediately visible near the middle of the room.

Perimeter, Federal Station Stockpile

There's a generator to the NW corner of the perimeter behind a guard house.

Basement, Federal Station Stockpile

This is behind the a Novice locked door in the second flooded room in the basement.

Trashcan Carla

Trashcan Carla is one of the regular traders that will visit Sanctuary after the People you rescued from the museum settles in there. (Or if you didn't kill her and robbed her) Her inventory gets updated once in a while but she'll have a fully charged Fusion Core in her inventory later on. Make sure to check it out and buy it so you can store it.

Diamond City Shops

Commonwealth Weapons and Diamond City Surplus are shops conveniently located beside the house you can purchase in Diamond City's Market Plaza. They sell fusion cores and seem to restock their inventory every once in a while.

Starlight Drive In

Found in one of the shelves in the storage room at the back.

ArcJet Systems, Engine Core Area

In ArcJet Systems' Engine Core area, you'll find the Fusion Core is installed in a generator at the back of the technicians room.

Recon Bunker Theta

This is found immediately as soon as you open the door in the bunker. However, you can only enter the bunker in the last part of the Brotherhood of Steel's quest "The Lost Patrol".

Atom Cats Garage

The generator is found at the back of the main garage. Also, NPCs Rowdy and Bluejay have fusion cores in their inventory as well.

FMS Northern Star's cargo hold

This marooned cargo ship is found near the southeast corner of the map. There's a running generator inside the damaged hull of the ship with a fusion core installed.

Generator outside Wilson Atomatoys Factory

There's a generator outside the Wilson Atomatoys Factory with an active fusion core.

Book Return Machine, Revere Beach Station

The raiders Revere Beach Station have Book Return Tokens. There’s a machine in the main building outside the station where you can exchange collected these tokens for various items, including a Fusion Core. The quantity of these items however, are limited. You can also collect Overdue Books and surrender them here to get 5 tokens (may pass as normal junk if you encountered them before) as you find the during your travels.

Alexis, Vault 81

Alexis is the only trader inside Vault 81. She has Fusion Cores for sale.

Alexis, Vault 81

Cricket, Vault 81 entrance

Cricket is a traveling weapons merchant who camps in the campsite in front of Vault 81. She has Fusion Cores in her inventory.

Generator, Boston Mayoral Shelter

There's a generator room in the bottom floor of the Boston Mayoral Shelter with a working fusion core.

Generator, Roadside Pines Hotel

There's also a generator in the back of the hotel with an active Fusion Core.

Basement, Suffolk County Charter School

Found in the basement of this feral-infested school.

Generator, Castle Tunnels

Once you've unlocked The Castle as a workshop, head to the general's quarters and clear the rubble blocking the doorway leading to the tunnels.

Generator, during the quest "The Big Dig"

During the quest "The Big Dig", you'll enter a tunnel past the utility room with destroyed Mr. Handys. In the end of the tunnel, there will be two exits. One leads to a room to a basement area to the SW with a Fusion Core behind an Expert security door.