ProMariners newest line of full featured, waterproof on-board Marine Battery Chargers. Ideal for the recreational boater and sport fisherman, the ProSport incorporates the latest in battery charging and maintenance technology. ProSports Distributed-On-Demand Multi Stage Charging insures all charging amps are used by automatically distributing 100 percent of the available charging amps to any one battery bank or combination of all banks. ProSport features a one time lead acid / gel battery selector, providing a performance charge of either battery type. Boasting an Aluminum Amplifier Style case, ProSport offers more charging amps for faster charging. The ProSport Maintenance mode is fully automatic and is great for long or short term storage. On-Board LED Power and Charge Indicators, Dynamic Thermal output control, built in Reverse Polarity and Ignition Protection. Pre-wired for fast and easy installation. FCC Class A. For 12, 24, and 36V Systems.