Four NiMh batteries can be charged at a time, of AAA, AA, C, or D sizes (don’t mix them though); they’ll hit full capacity in as little as six hours, given a sunny day. There are also adapters for plugging your small electronics in directly. While batteries aren’t included, the unit itself runs for just $14 at present, so if you’ve got NiMh batteries lying around, it might be a handy alternative.
[via Red Ferret Journal ]