ProSport Generation 3 Onboard Marine Battery Chargers incorporate all-digital microprocessor control. Like no other, the new ProSport Series provides automatic installation feedback with its exclusive "System Check OK" and individual "Battery Bank Trouble" LED indicators and also has the most advanced energy saving mode. During short or long-term storage, ProSport automatically reconditions all batteries once a month for maximum battery life and performance. Digital LED and battery type selector indicates charging and conditioning modes. Compact and rugged extruded aluminum design with built in over-voltage, overload, over-temperature, reverse polarity, and ignition protection. Pre-wired for easy installation. Two-year warranty.