Solid state batteries replace the flammable liquid electrolyte with nonflammable solid one. It isn't the lithium that is burning. Also, LiFePO4 are already non

Solid state batteries replace the flammable liquid electrolyte with nonflammable solid one. It isn't the lithium that is burning. Also, LiFePO4 are already nonflammable lithium batteries. They have lower power density when solid state are supposed to be equal or better to LiPo.