I started a new game completed a couple of quests and collected four fusion cores and stashed them away for later.
I then started the mission to clear the Corvega assembly plant I cleared the outside of the plant with a sniper rifle filled my inventory with loot and ran back to drop it off.
Then I picked up a couple of fusion cores and got into my power armor to go finish the mission, shortly after this I realized I had three more fusion cores in my inventory than I should have.
I thought I had accidentally picked up all four of my spare fusion cores, so I ran back to put the spares back to find that all four were still in the stash.
My question is are there four fusion cores at the Corvega assembly plant that the wiki doesn't know about or did i accidentally find a way to duplicate fusion cores?