Steve brought an excellent website to our attention. A great resource for us in the realm of electrical circuits. The only problem? Now we know what won’t work.
Each LED group of three = .72 watts and 12 of these groups require 8.64 watts. An average casual biker around 153 lbs outputs about 210 watts. Though it might not sound that much, it is actually almost 3x’s the usual output of the hub generator. And of course, stealing that much from a rider is fatiguing after a while. Not to say it is completely out of the picture, a battery is looking better and better.