This new Envia Company technology dramatically increased Li packing density. They developed electrode substrate at nano level (20nm) structure density. Time will tell how successful their technology would become. I hope that some new technology would come out from US. I prefer batteries versus supercaps which can rapidly discharge in explosion. Worldwide development of battery
technology is moving rapidly, so, let’s hope.
20 years ago no one would predict that new Nokia smartphone will have 41MP built in camera; as a matter of fact no one predicted a word “smartphone”.
Lithium Ion batteries at 40% discharged state in high temperature (airport parking) will self-discharge.