nostr:npub10agh7hm20ydq9t9xgyfexhhvfzyvg2gl9ujypfr4tkj2uytmpvlqtrtdly
Those battery fires are a chemical exothermic reaction because of overheating. Like Tesla's actually have a battery cooling system, besides heating in winter. I don't know about other EV's, but probably also. Once it starts, it keeps igniting because of the heat itself produces. They put them in containers with water to cool it and it may take a week or longer to finally quit igniting. See the example pictures from the Dutch fire department.
