Automatically recharge batteries to 100% with accurate current and voltage regulation. Functions as both a battery charger and power supply. DC loads such as lights or automatic bilge pumps can run off the charger if necessary. Ignition protected. Battery type switch to allow charging either lead acid, gell or AGM batteries. DC output voltage 12V or 24V. 3 banks. 2 year warranty. Dimensions 3.7" x 9.5" x 10.5".