It would be a good way to avoid the photos under the "Photos: sharing electricity" entry.
http://www.theguardian.com/world/2012/oct/31/superstorm-sandy-cleanup-liveFor a home/vehicle setup, there are a number of DIY chargers that use 4+ D-cell alkaline batteries (3-4 times the capacity of AA batteries) in series with a 5V regulator and a power resistor. Alkaline battery shelf lives have reached the point where they are now viable for extended storage.
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Hope for the best and prepare for the worst.
The object in life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane
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