wiring a generator and battery on my bike

Hello, A solar panel would be great to add on later, but I do alot of bike riding at night. The generator I have found is the same as the one here: [url]http://www.bikeworldusa.com/product_info.php/products_id/394[/url] Its 12v at 6watts, or 1/2 amp. The chargers I have for lead acid batterys take in a 6v at 1/2 amp, ( 3 watts ) so I figured I could charge both the batterys off of this. The batterys I am using I beleive are 2.5ah batterys. The GPS runs on its own batterys, but accepts a 250mah charger ( but can use the AA batterys in the AA charger ). And the AA Battery Charger I have takes 1/2 amp at 6v to charge. I guess I dident add all that up before. Maybe i'll just use the generator to top of the batterys, since I planned on having them plugged in to charge at home/work/gfs house. I never thought of the drag on the tire from the generator, I will through a switch in there, I'll take draining the batterys over draining my legs after a long day of cycling. ( if I run a light that is ). Im not sure if it is AC or DC, I always forget to check that, I make the stupid assumption that everything under 24v is DC, been wrong a couple times. If/when ( depends on how hard it is to pedal with generator ) I add a solar panel, can I wire that in par. with the generator to reduce the load in the sun? Oh, and last things last, me and a friend are doing a Techy kinda VidCast, and I am doing an episode on my bike stuff, so I'll give you guys all a shoutout, Cause Y'all are ausome. Thanks guys, Allan.