Folding 36v solar electric bicycle battery charging system 4

This is a video showing a small folding panel (30W) that is used to charge a 36V lithium ion battery for an electric bicycle. It has a fold out panel (3 x 12V), a small regulator and cables. It charges at approximately 0.5A when in good sun. This equates to approximately 1.5km of electric bicycling per hour of charge.