If you like your HF tenders that's fine, but no smart charger outputs a constant amperage, they all have variable outputs for different modes like float. The Battery Tender and Noco absolutely are chargers and tenders both, along with repair and other stuff.Battery chargers are not battery tenders and battery tenders are not chargers. Keep in mind the name on the one you are looking at is a "BRAND NAME" but that doesn't make it a tender it says right on it "BATTERY CHARGER" 4 amps is to much to "MAINTAIN" a charge. Believe it or not I have 6 battery tenders, I have bought from Harbor Freight that work excellent.