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Re:Show HN: Build A Personal Power Plant for $200 by Faaak on Monday September 11, 2017 @10:58AM (#15218970)
Thats not true.

If you suppose a 12V 420Ah battery, its capacity will be of 5kWh. That would require at least 0.5l of fuel. But with a typical efficiency of 30%, it will require 1.6l, and not 0.1l.

Re:Show HN: Build A Personal Power Plant for $200 by donquichotte on Monday September 11, 2017 @11:13AM (#15219080)
My mistake, I meant 420Wh. Thanks.