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Charge CD player batteries without opening the lid
Easily recharge alkaline batteries!
Light Electric Vehicle: One-Passenger @ 15mph, 210# Curb Weight
Battery Voltage Indicator
DIY Portable USB Solar Charger ($20 - 4 Ports)
Solar-powered algae bioreactor
Make the Harbor Freight 45W Solar Panel Charge Controller useful with a simple mod.
Lithium Heavy Duty Solar USB Charger 2.0
How to extend the life of your laptop's battery charge
Bring Dead Lead Acid Battery To Live Again
Posted:Jan 25, 2010
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