Was wondering if anyone knew of a good solar based method for charging Lithium-ion batteries, like AA or AAA?? With the little bit of research I've done, it seems that while it's easy to recharge NiCad or NiMH batteries with solar panels, Li-ion batteries have their own special peculiarities for recharging, and may not be as easy to recharge with a solar panel. It seems that while Li-ion batteries charge well off of a stable power source (wall voltage, via charging block, or computer USB power), they don't do well with the fluctuating power that solar panels put out. In fact, most of the time, what I've seen is "use the solar to charge another battery, then use that to charge the Li-ion battery" type of response! The problem with that, of course, is that every time you go through a charging system, you're going to have losses (no system is 100% efficient), so why take a double-loss by charging one battery, then using it to charge another? While I have no problems with using NiMH batteries, the inherent stability of a charged Li-ion battery, plus their lack of charging "memory", makes them more attractive of a power source, for small electronics (flashlights, radios, etc.). Does anyone have any insight on this, or know of a good solar charger that can recharge both an installed battery pack AND small (AA/AAA) battery charging, straight off of the solar panel? Thanks, in advance!