The panel is too small to generate a reasonable amount of power, even if you were by some chance to spend all your walking/cycling time in direct sunlight, with your back to the sun, leaning forward to keep the panel at right angles to the sun. You can get flexible fold-up panels that could be strapped to the outside of a backpack or paniers, but they work much better when you're stationary and they can be pointed at the sun. For a worthwhile power output they aren't cheap.
If you want something effective for emergencies or extended periods away from power a mechanical device is probably more effective. For cycling a good dynamo will provide more, and more reliable, power than any bike-mounted solar panel. Other than that there are some good quality hand cranked generators available, along with a lot of bad ones. There are even a few devices that will take energy from irregular movement, a bit like a self-winding watch. On Thursday 21 May 2009, Daniel.Li wrote: > Dear All, > > Solar backpack absorbs solar energy and turns it into electric energy > storing in storage battery. It can charge different specification mobile > phones through corresponding connectors. > > I'm really interested in this. And I think solar backpack is much more > suitable for emergency situation when there is no electricity > outdoors.This product is easy to operate ,safe to use ,convenient to > take and fashionable. > > Solar backpack is an ideal product for living and traveling. It's much > more convenient than solar charger, as I don't wanna hold solar charge > when I'm biking or mountain climbing :) > > What do u think? Any idea or comment on this? > > > http://jdhysm.cn.alibaba.com/athena/offerdetail/sale/jdhysm-1037354-1609592 >15.html _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
