Fission Batteries can be found all over the wastes, usually in Tool Boxes or destroyed Robots.
- 9 are located in Horace Pinkerton's lab in the broken bow of Rivet City.
- 2 are located next to a First Aid Box on a table, directly to the right of Vault 92's vault door.
- 2 can be found on a shelf near Protectron's desk.
- 1 can usually be found in the Mechanist's Forge in the Robot Repair Center.
- 5 are located in Hubris Comics Printing on the lower level, 1st room on your right at the bottom of the SE corner stairs.
- 2 can be found in a crate by Dr. Lesko's desk in the the Marigold Ant Queen's chamber
- 2 Can be found Next to the VAPL-84 Power Station in the truck guarded by 1 or 2 Yao Guai
- 1 Can be found in the kitchen in Zane House