Ideal for the recreational boater looking for fast charge times and superior durability, these waterproof chargers use the latest charging and maintenance technology. Distributed-On-Demand Multi-Stage charging insures all charging amps are used by automatically distributing 100% of the available charging amps to any one battery bank or combination of all banks. These new Gen 2 ProSport Chargers have a 3-charge profile digital battery type selector for use with flooded (lead acid), GEL, and high-performance AGM batteries. Chargers also feature an expanded LED status center, dynamic thermal output control, and built-in reverse polarity and ignition protection. Provide fast charge times from 8 to 10 hours. Pre-wired with 5' cables. Two-year warranty.