The Battery Tender 4 Bank Battery Charger is capable of charging four 12-volt batteries at 1.25 amps simultaneously. The unit's constant current charging is controlled by a microprocessor to prevent overcharging damage caused by trickle chargers. You can use this battery charger with AGM, sealed maintenance free and flooded batteries. You can charge and maintain the batteries of motorcycles, ATVs, jet skis, lawn mowers, and dirt bikes. The unit is capable of maintaining battery charge at the ideal storage voltage for cars, SUVs, pickup trucks, and boats. A 72-hour safety timer shutoff protects your batteries from overcharging. For further safety, the battery charger is spark proof and is equipped with reverse polarity protection. Includes alligator clips and 2 ring terminals for connection. The Battery Tender 4 Bank Battery Charger weighs less than 4 pounds and is designed to charge and maintain your batteries wherever you go.