Luckily the other big benefit of solid-state batteries is they don't tend to catch fire (even when physically destructed). The flammable part of lithium-ion bat

Luckily the other big benefit of solid-state batteries is they don't tend to catch fire (even when physically destructed). The flammable part of lithium-ion batteries is usually the liquid electrolyte, but solid-state batteries don't have a liquid electrolyte.