Thread: Which portable AA->USB charger?
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Old 12-17-2012, 02:07 AM   #10
GeoffR
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This sort of solar charger might work for me: the solar panels charge 2x AA NiMH batteries which are used to power the usb device. If there is no sun then I could just insert precharged AA batteries to keep the reader going.

http://www.powerfilmsolar.com/produc...-remote/usb-aa
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