ProMariner 25104 ProTechOne Digital Series On Board Battery Charger and Maintainer, AC Corded with 2.5' Power Cord - 4 Amp

All-digital charging technology with fully-automatic multi-stage digital charging Dedicated battery charging, sensing and control Push-to-test battery monitor LED fuel gauge status Waterproof DC safety fuse for maximum DC wire protection Ignition protected and FCC Class A for quiet operation and non-radio interference