fwiw, Wikipedia says "The lifetime of supercapacitors depends mainly on the capacitor temperature and the voltage applied." [ 1 ] This picture shows a 10x decr

fwiw, Wikipedia says "The lifetime of supercapacitors depends mainly on the capacitor temperature and the voltage applied." [ 1 ] This picture shows a 10x decrease in life when the temp varies from 25C to 65C: https://en.wikipedia.org/wiki/File:EDLC-Life_time_curves.png https://en.wikipedia.org/wiki/File:EDLC-Life_time_curves.png [ 1 ] https://en.wikipedia.org/wiki/Supercapacitor https://en.wikipedia.org/wiki/Supercapacitor EDIT: I'm not trying to inject bad feelings here or contradict Ohm. I'm just clarifying the effect of temperature on supercap life. There is some effect on cap lifetime at high temps. I hope the product succeeds. I know sailors have using lithium batteries for a while now, but as mentioned elsewhere, they are shockingly expensive (like $6k).