[emeritus]

Just had another look through my 1940's book ("Accumulator Charging", W.S.Ibbotson, Pitman, 7th Edition, 1941). Confusingly, the Nickel-Iron cell is referred to as the "Edison Nickel-Iron Alkaline Cell", or Edison cell for short, while the Nickel-Cadmium cell is called the " "NIFE" Nickel-Cadmium Cell ", or "NIFE" cell for short. "NIFE" always appears in quotes, suggesting it might at that time have been used as a trade mark for Nickel-Cadmium batteries and not, as the letters in quotes suggest, Nickel-Iron batteries. It is therefore possible that the NIFE batteries that other posts have mentioned as having been used in electric vehicles were actually Nickel-Cadmium batteries. Externally, they seem to be pretty well identical.