[x] it lacks the energy density to make it sufficiently portable. that only matters if you want a portable battery. there are alot of uses where it doesnt need

[x] it lacks the energy density to make it sufficiently portable. that only matters if you want a portable battery. there are alot of uses where it doesnt need to be portable at all. thats only for electric cars. same with crash resistance etc, and even affordability for average users. it literally says "satellites and industrial machinery." in the article, neither of which needs to be very cheap or portable. especially because other batteries arent good under extreme temps