For removing a stuck (AA) battery - from my camera - this worked like a charm and was least intrusive.
* I put the camera on it’s side so the stuck battery was facing the ceiling and was COMPLETELY LEVEL.
* I smeared a little super glue onto the top of the stuck battery but not close to the battery’s edge!!!
* I placed a thick metal nut on top of and in the center of the battery. The nut must be smaller than the battery.
* I added extra super glue into the center region of the metal nut.
* I let it set until the next day. Then, simply used a wrench on the nut to move it until it was free; then could simply extract the battery.