Goal Zero makes a line of great solar/battery chargers and the batteries for smart phones and tablets. You can charge their battery packs with AC or charge from your car. When all else fails their little solar panels (about the size of an iPad) will charge their batteries which in turn can be used to charge your device. The solar panel will charge your device directly as well, but since some smartphones and tablets don't like anything but perfect power, you plug the battery into the solar cell and plug your device into the battery. Sounds complicated, but it's not.
Their Guide 10 does the job quite nicely for me. http://www.goalzero.com/p/79/guide-10-plus-solar-kit It can be used to charge a variety of devices although for an iPad you need their Sherpa 50. It is quite a bit more, but works very well and in absence of regular power for several days and no car (no gas) to charge from it will do very nicely.
REI carries them and they do road shows at Costco frequently with special deals. You can buy direct from Goal Zero, but can usually find a little better prices elsewhere.
Tom in NM
From: iPad@yahoogroups.com [mailto:iPad@yahoogroups.com] On Behalf Of David Smith
Sent: Wednesday, January 01, 2014 6:15 PM
To: iPad@yahoogroups.com
Subject: Re: [iPad] iPad addiction and withdrawal - why Apple's tablet dominatesAppleTell
If you live where there are frequent power outages, it could be sensible to keep a good-sized backup battery fully charged. It could be used every day as a power conditioner for a laptop or desktop, then when the power grid fails, it could be used only to feed the iPad or iPhone.
How can I figure out how much backup capacity would give you me much iPad time? Must be a simple equation, but I'm clueless.
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