Fully automatic chargingCharges and conditions batteries with a built in safe maintenance mode for long and short term storage Automatic charging for lead or gel batteriesOptimized charging output for lead or gel batteries Waterproof and shock resistantSaltwater tested for coastal boating Built-in protectionReverse polarity, ignition & temperature protection LED power and charge indicatorsAt-a-glance power and charging status Pre-wired for easy installation 1 Year Warranty