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I do a lot of backpacking and have found my iPhone 4 is great as a multi-purpose device: GPS maps, video camera, music player, entertainment. The only problem is that the battery tends to die after a day out. I'm looking for the best solar charger device out there: something lightweight, simple, durable, that will charge an internal battery or the iPhone as quickly as possible and store as much extra juice as possible. Ideally, the device I'm looking for will not weight more than 12 oz. and will be able to fully charge the iPhone on 4-6 hours of sunlight (an average day).

asked May 25 '11 at 09:12

Samuel%20Kordik's gravatar image

Samuel Kordik

I'm a big fan of the Joos Pack


It's a battery that charges by solar so no matter what, if it's charged, it'll charge up your..whatever. if it doesn't have a stored up charge, it automatically starts charging from the cells. It also comes with a few connectors for different products.

I currently own 2!


answered May 25 '11 at 15:37

Achristocat's gravatar image


This isn't as straightforward as an out-of-the-box solution, but this Instructable provides instructions needed for making your own portable solar charger that incorporates a second battery. All the parts can be picked up at Adafruit and it seems like folks have been modifying the design to their needs (some are using Pelican cases). If you know how to wield a soldering iron this might be a good solution.


answered May 25 '11 at 10:52

oliver's gravatar image


I have found a really powerful 6w Pocket sized portable solar USB panel that is perfect for cellphones! Check it out and see what you think Solar iPhone Charger


answered Dec 02 '11 at 23:20

Ryan%20Brown's gravatar image

Ryan Brown

edited Dec 02 '11 at 23:21

Sweet I just found this! Best Solar iPhone 4/4s solar charger. Check it out...


answered Feb 11 '12 at 19:29

jerry's gravatar image


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Asked: May 25 '11 at 09:12

Seen: 11,322 times

Last updated: Feb 11 '12 at 19:29

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