ProSport Generation 3 On-Board Marine Battery Chargers incorporate all-digital microprocessor control. After fully charging and conditioning batteries, ProSport's Energy Saver Mode will monitor and Auto Maintain batteries only when needed to maintain a full state of charge, resulting in maximum reserve power performance and lower AC power consumption and operating costs. ProSport incorporates Distributed-On-Demand Charging technology, taking 100 percent of the available charging amps and distributing them to any one or combination of all batteries as needed for faster charging. ProSport is 100 percent waterproof and shockproof, weighing 40 percent lighter than older technology epoxy filled chargers providing cooler operation and greater reliability.