Yep, I remember seeing that product posted before. Wish it didn't cost so much. I'm confused though, I thought a typical hub dynamo could only supply about 500ma.@ 6volts. (?)

Interestingly while reading about the Sinewave charger it looks like it will work in parallel with a solar unit to run/charge a device. That is an interesting option if you have the money and don't mind the extra weight.