Yes and no, the exothermic reaction ignites the electrolyte solvent, usually a blend of organic carbonates (depending on the type of battery). So it's almost a

Yes and no, the exothermic reaction ignites the electrolyte solvent, usually a blend of organic carbonates (depending on the type of battery). So it's almost a liquid fire, a chemical fire and an electrical fire all in one. It doesnt have an oxidizer, but the chemicals do contain oxygen. But ultimately there are 3 ingredients needed for a fire, fuel, oxygen and heat. An extinguisher targets two of these by cooling it down and limiting oxygen. The exothermic reaction will also slow down when cooled which will further help contain the problem