RecPro
An RV converter changes 120V campground power into 12V power for lights and pumps and charges the house battery. If your current converter works and suits your batteries, you do not need a new one.
RV owners replacing a failed converter or changing battery type.
RecPro 65 Amp RV Power Converter & Battery Charger | 4-Stage Charging (ASIN B092W886Y6). Amazon's page has the current price, specs and reviews.
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Check current Amazon listing (ASIN B092W886Y6).
Fine print: The Dude has not personally tested this product. The details on this page come from the Amazon listing and can change; check the listing for the current specs, price and availability.