someone (aracer probably 😉 ) will correct my electronmathmatics…
but USB is 5v usually?
my phone has a 2Ah battery, lets say 5v, which is 10Wh
so it would take at least 10 hrs to charge my phone. Not allowing for losses etc.
Ive used a peltier device to power a stove top fan, at it’s best it produces a pretty woeful current, I just cant see it being sensible way of generating electricty.
Id suggest it would make more sense turnign it round the other way and making solar panel driven chillers to keep food fresher longer in developing world.
[video]http://www.youtube.com/watch?v=zsE4YtzXZe8&feature=g-upl&context=G20f78d5AUAAAAAAAFAA[/video]