@Narwat - armor crafting is meh, unless you improve power armor, but then fuel cells are not that common.
By mid / end game I was sitting on about 30+ fuel cells (by the last fight I had over 50). Combine that with the perk that would make them last 2x+ as long (if you wanted to go INT so you can get the science to craft better power armor) and you’re basically set for life. From my experience, if you avoid sprinting and using vats (which consumes power) too much a single cell will last 2-3 entire quests (or clearings of an area) without the perk. So by mid game without the perk I could probably do 60-120 areas and still have backups.
The most annoying part about it is wasting your fuel walking from one place to another, so you end up with this really weird strategy of “I walk to this new place, then teleport back home, get in my armor, and teleport to the new location to wreck some face, then teleport back home, get out, teleport BACK to the place I just cleared, and walk to the NEXT place.”
So in short, there’s actually plenty of fusion cells but using them is more annoying than anything else in the game Which made me sad. I ran a few missions like that then gave up, I could complete them on Very Hard without my armor, so why bother wasting time teleporting back and forth.