the terminator rpg T2 judgement day pg153

NUCLEAR POWER CELL: Late Model T-800s
switched from using hydrogen power cells to
full-blown nuclear batteries. These batteries
are mounted in pairs to ensure the loss of one
cell doesn’t cause a catastrophic event but this doesn’t stop a cell’s detonation being very
serious. A nuclear battery is still a radioactive
hazard even if it is a comparatively small one.