Yikes, I didn't mean to start an environmental debate. I should have never used the phrase "tree-hugging". I realize I'm not necessarily going to reduce my carbon footprint to zero or be as efficient as possible, that's not necessarily my goal. More for the pride of saying that I'm not reliant on any outside source (other than food) for my ability to get from Point A to Point B. I could do it without any crap-- excuse me, gadgets-- rely on reflectors, not taillights, live without the cellphone or GPS or even the Cyclocomputer, but since they exist and are useful, I'll use them. Relying on a power source other than myself, however efficient or inefficient that might be, just seems a bit like cheating go me. May as well get an e-bike or a motorcycle. I have nothing against anyone who does use batteries-- each to their own. I'd just rather not, simply to be able to say that it's all me.
Since there was a request for more information, the touring I'm thinking of doing (in about four years) is a coast-to-coast charity event, and so would want to have some way to blog about it. I don't plan on using a laptop (what I have now) or a tablet continuously, just figured I might be able to recharge it during the six hours or so of daily biking. I'd not normally take it with me for daily training runs. On the tour, I could use the AC outlet from a motel room, but it would be cool if I could write that even the power to post the blog was coming from me.
I want bright lights for daytime visibility, not for nighttime running. I'd likely just flash the headlight when oncoming traffic approaches, just to save power. The cellphone (I have a dumbphone, not a smartphone-- maybe I'll upgrade) is for emergencies; I haven't used the Garmin from my car yet, but figured for now I'd go for now with what I have. If I work up to 20 miles a day, I'd like to have a radio along for some tunes (no headphones)-- I ran into a guy who had a neat little radio strapped to his handlebars, and thought it would be nice to have. Cars have radios, why not bikes?
So I'm looking at a Luxos U and USB ports, maybe a second hub just for the taillight. Still wish I could figure out a way to handle the battery in the Cyclocomputer-- if it takes a battery, it takes a battery, I just need to figure out a way to substitute an external rechargeable battery and adjust the voltage and/or amperage. I haven't had a chance to read the Wayne Estes article, but thanks to 01 Cat Man Do for the link. Hopefully, my answers will be there. Thank you again for everyone who took the time to respond.