In like 2010 there were pocket size fuel cells on the market. What happened to that? What happened to the Biolite thingie that turned heat into electricity for charging your phone? Nowadays everyone just uses folding solar panels and power banks for portable power. It's OP and sure I guess it's practical, but too simple and boring. I would buy a micro RTG if the government would let me. I want some true scifi shit, not a black rectangle and a battery. What are my options?