I do a lot of outdoor camping and other activities sometimes waaaay out of reach of my vehicle and a decent charging source. I am looking for a solar charger that will provide some serious charging and storage power for my 4S and other battery devices. I see a lot of chargers that take 12 hours of sun to reach full charge, and then they barely fill the phone up half way. I looked at the Joos solar charger, and it seems like it's one of the better ones out there, but it sure doesn't seem like it's got a lot of oomph. I see a lot of reviews out there, but they don't have some practical demos. Was wondering if anyone out there has experience with these kids of chargers and can recommend a good one for backpacking/bikepacking....
