It actually does, these are batteries with solid rather than liquid or gel polymer electrode. Hard trick to pull off if you want low weight and high capacity -

It actually does, these are batteries with solid rather than liquid or gel polymer electrode. Hard trick to pull off if you want low weight and high capacity - as lithium-sulphur experiments showed. That's not even counting the entirely different manufacturing process causing very high prices. At least these batteries are much safer and have much better cycling performance.