• Convenient mounting eliminates the hassle of traditional portable chargers • Fully automatic 3-stage charging (bulk, absorption and maintenance) • New automatic temperature compensation delivers fast charging recovery, even in extreme temperatures, while protecting your batteries from overcharging • Low line voltage compensation delivers true-rated output even when input voltage drops • Waterproof, shock- and vibration-resistant construction • Short circuit, reverse polarity and ignition protected • For use with 12V/6 cell batteries (50-130 amp hour rating) that are flooded/wet cell, maintenance-free or starved electrolyte (AGM) only • FCC compliant • UL listed to marine standard 1236 • 3-year warranty