this items requires repair work for it to work or stripped for parts, please know this when buying Renogy DC to DC Battery Charger 12V 20A, Intelligent Converter for Flooded, Gel, AGM, and Lithium Batteries, for RVs, Truck, Motorhome, Commercial Vehicles, Boats and Yachts RBC20D1U / RBC40D1U 12V / 20A/40A
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