ProMariner 43012 ProSport 12 12-Amp 2-Bank Battery Charger The 12/24V, 12 Amp, 2 battery bank ProSport 12 waterproof battery charger delivers fast efficient charging in a lightweight design Distributed on Demand Technology utilizes 100% of the available charging amps and automatically distributes charge amongst all the batteries as needed . The result is faster, more efficient charging Advanced technology eliminates time consuming troubleshooting by clearly indicating system and battery connections are OK or if a fault is present on a specific battery bank During short or long-term storage, ProSport automatically reconditions all batteries on board once a month for maximum battery life and performance Compact and rugged aluminum design, dual in-line DC safety fuses for trolling motor and house battery banks. Built-in over-voltage, overload, over-temperature, reverse polarity and ignition protection Digital LED Display and Battery Type Selector: LED indicators for Charging, Conditioning and Auto Maintain modes in addition to AC power and selected battery type