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ZoFreX
on Sept 26, 2013
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FlameStower - USB charger powered by fire
For a given weight/volume surely a gas canister works out as more energy than a backup battery?
wtallis
on Sept 26, 2013
[–]
Liquid fuels are even better than compressed butane and propane, but whether they beat lithium-ion batteries depends a lot on how efficient the conversion is to electricity.
Consider applying for YC's W25 batch! Applications are open till Nov 12.
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