[letuv]

Are these 500 Wh/kg batteries somehow available in powerbank (sub-500g) size?

So far the best I found are around 250 Wh/kg (for the whole powerbank).

[cperciva]

You'll have trouble finding powerbanks over 100 Whr, due to FAA regulations.

[jauntywundrkind]

I wonder when if ever we'll see this re-evaluated.

It's still a terrifying amount of energy, but I'd feel much much different about someone with a 300WH LFP pack sitting next to me than I would a lipo pack.

[martythemaniak]

It'll probably be a while before you see them widely available, much less in small consumer devices. eVTOL and other battery aircraft can't really work without this level of density so I imagine they'll consume all available supply (at premium prices) for a while.