$50 AC and solar. Launches this spring in Europe. Takes 20 hours to charge 2 AA batteries in bright sunlight. http://www.energizer.com - Robert Scoble from email

Not gonna be a nay-sayer here but... you kinda don't get 20 hours of bright sunlight in a row... Unless you are at the North or South Pole... Which then this would be useful... - Johnny

Not too bad, a bit of patience never hurt. I'm sure this could be tweaked to achieve a faster charge though - Mo Kargas

So in England it'll take from May-September ish to charge this :) - Patrick Jordan

Just if 20 hours is required for a full charge, how would a short charge (say 8 hours sunlight) effect the batteries memory etc? - Johnny