> "So you can't call this an "iron battery", because you don't get electricity out of it, just heat." But add a fuel cell and the same reaction does give you a

> "So you can't call this an "iron battery", because you don't get electricity out of it, just heat." But add a fuel cell and the same reaction does give you an "iron-air battery": https://en.wikipedia.org/wiki/Metal–air_electrochemical_cell#Iron–air https://en.wikipedia.org/wiki/Metal–air_electrochemical_cell...