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[–] BlowjaySimpson ago 

How small can solar panels be?

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[–] Improbablyanasshole ago 

They can increase flight time but not by a ton, micro drones only last 5-10 minutes afaik.

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[–] sore_ass_losers ago 

Not that I’m following the technology, but I haven’t heard of this. If it were feasible hobbyists would be doing it.

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[–] BlowjaySimpson ago 

Hobbyists have built on demand hydrogen combustion cars that run on water.

But it gets suppressed, and you don't see it in mass production.