Carbonfiber alufoil cell – building up a rollup cell
http://www.overunity.com/13282/carbonfiber-alufoil-selfmade-diy-battery-with-naco3-or-ashwater-electrolyte
In this video I finally show, how to build up such a rollup cell from carbon fiber and alufoil and roll them up, so you can store it easily in a plastic cup.
Regards, Stefan.