I've also thought about a Solio charger, but I'm leery of spending a bunch of money to solve a problem that really isn't much of a problem.

I carry 2 LED headlamps. One fits on a headstrap mount. The other is just "loose". I like to have a backup in case my headlamp fails, or if I need to change batteries after dark. The second headlamp is lighter than any other flashlight I have, and it's nice to have a backup headlamp. I read in bed every night, so I replace the batteries after a week-10 days. The headlamp takes 3 AAA's. I buy packs of 4, which leaves me wondering what to do with the 4th. ????

I have a blinky on the back of my bike. It runs off 2 AA's. I only use it in tunnels, dark stormy days, or fog, which are seldom, so one set of batteries will last the entire tour.

I carry a compact digital camera that uses 2 AA batteries. I carry an extra set, but one set will last 2 weeks.

I also carry a cell phone and an mp3 player. Both have internal, rechargeable batteries. I bring the chargers. When I'm in a restaurant I look for a table by plugs, and ask if I can plug in. I've never been refused. When I'm in a campground I look for plugs. I've found them in bathrooms and outdoor covered picnic areas. I don't like leaving my electronics unattended, so I have to stay close. It's a hassle, but I bring a book and sit and read while I'm waiting for my things to charge. I've also plugged in to the plugs at a full-service campsite that was unoccupied. I've plugged in at libraries while I was checking my email.

The easiest is plugging in at restaurants and libraries - I'm going to be sitting there anyway. It's more annoying to have to sit by a bathroom, or picnic area, or service post and wait, but not horribly so.

I keep my cell phone turned off unless I'm calling. My mp3 player has flash memory, which I think takes a lot less power than something like an Ipod with a spinning hard drive inside. It will last at least three days on a full charge. I don't always listen to music when I ride - probably more like 50-60% of the time, and I don't listen to music once I reach a campsite. I do dictate my journal, and if I'm close enough to a station for my FM radio to pick up NPR, I'll listen to that for awhile.

If I bought a Solio and no longer had to sit by bathrooms, picnic areas, and service posts, that would be helpful. But would it be worth the weight and expense, and how well would it work?