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Discussion in 'Energy, Environment, and Policy' started by ggies07, Dec 4, 2013.
I think this is a neat idea.
Eco Special - USBCELL C02 Saver Pack - usbcell.com
Neat. But the charging circuit is a resistor and diode, which means the battery won't last if left continuously to charge. The capacity is also rather limited (1300mAh; typically AA NiMH achieve 2000~2500mAh.) I just use a twin-AA smart NiMH charger (USB powered), plus you're not stuck with buying a specific battery when one of the NiMH die.