I was thinking about going with a dynamo wheel on my touring/camping bike when I realized that instead of building a $200-300 3 watt dynamo wheel I could use a

I was thinking about going with a dynamo wheel on my touring/camping bike when I realized that instead of building a $200-300 3 watt dynamo wheel I could use a 28 watt solar charger on the rear rack for $50. Not to mention batteries have gotten so big/cheap and places to charge are all over the place.