> What's the energy density of current batteries and how much lighter would equivalent batteries be using this technology? Not my area, but the best info I can

> What's the energy density of current batteries and how much lighter would equivalent batteries be using this technology? Not my area, but the best info I can find around is somewhere in the region of 200-250Wh/kg at the top end for current typical lithium ion batteries. I'm not sure if that's the type they're using. https://batteryuniversity.com/learn/article/types_of_lithium_ion https://batteryuniversity.com/learn/article/types_of_lithium... https://arxiv.org/pdf/1803.04317.pdf https://arxiv.org/pdf/1803.04317.pdf https://en.wikipedia.org/wiki/Lithium-ion_battery https://en.wikipedia.org/wiki/Lithium-ion_battery