We are a long way from solid-state batteries being a thing. 20 years minimum. The one key problem is that you must put them under insanely large pressures to

We are a long way from solid-state batteries being a thing. 20 years minimum. The one key problem is that you must put them under insanely large pressures to make them work. Basically the solid components are far too diffuse and low density to work at 1 atm. Enough pressure is required for them to be potentially explosive if "opened" either intentionally or accidentally. And you thought lithium fires were a problem! This itself is a not-yet-solved element of the technology that is no where near to being scalable at production. The technology is overhyped if ANYONE says it's "just around the corner" - it's NOT.