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Old 02-11-2012
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Originally Posted by Shark0311 View Post
FYI most devices that charge via USB cable charge at 5 watts (5V @ 1A). The exception is the Ipad that charges at 10 watts (5v @ 2A).

Converting DC to AC to DC is very inefficient and unnecessary in most cases. Just use a cigarette lighter adapter. There is no need to use an inverter for the devices that you have listed.
Yep! That's true. All the above listed devices usually come with small, DC adapters for charging and operating the device. I just didn't think about that until you mentioned it. (Guess my mind's starting to go--my wife said it was the second thing! )
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Old 02-12-2012
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Thanks all for the feedback. I've seen a few interesting looking devices on Amazon that have a solar charger and battery built in.

Anyhow, sounds like they're not quite up to the task yet.
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Old 02-12-2012
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Those packages are nice integrations, but, for instance, that one contains a lithium battery equal to two $25 "usb recharger" batteries, plus a tiny solar panel. Well...another $50 would buy you a lot more panel than that. Which of course wouldn't fit in your pocket.

But if you are going off-grid, don't plan to use a lot of power, but want a long-term way of topping it up IF you do...they probably would work well. Personally I just picked up a couple of the usb batteries on sale, I figure they'll give me a boost long enough to get me back to the grid, if I need one. There's also a little hand-crank gizmo for the same purpose, not expensive.
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Old 02-12-2012
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I bought a Suntactics solar charger back in 2010 and have never regretted it. It's a charger only - no battery. It's only 1 amp (5vdc) via USB and it charges my small electronics (iPod, Kindle, smart phone) at about the same speed as using their respective AC cords, and, since it has a USB plug, it works for all three. I've never gotten mine wet, but it advertised as being waterproof.

Amazon link: http://www.amazon.com/sCharger-5-Pow...ef=pd_cp_cps_2

My review on Amazon: Amazon.com: Daz's review of The sCharger-5 is a Powerful Compact Solar...

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