I’ve mentioned PowerPot a couple of times in the past and at this past OR Winter Market they showed their new PowerPot X which offers twice the power of its predecessor the PowerPot V. This means you can charge two smartphones or one tablet (10w and up to 2a) via 2 USB ports, in a package that weighs in beginning at 20oz depending on whether you use the regular 2.4l or XL 3.8l model.
The concept is simple. You use the PowerPot to cook and the device converts heat into power which can be used directly or stored in a battery.
www.thepowerpot.com/power-pot-x