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Genuine Volkswagen Audi - cddCS5Q5D - 5 Watt Solar Panel Battery Charger - (NO LONGER AVAILABLE) (cdd CS5 Q5D)
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Making an OBD-II Solar Trickle Charger – Kerry D. Wong
Sunway Solar Car Battery Trickle Charger & Maintainer 12Volt 8W Solar Panel | eBay