Boost star battery charger 1.quick change 2.quick start 3.compact 4.reasonable price Boost StarFeatures:1.Single phase battery changer&starters2.For changing lead-acid batteries with 12/24v,and starting all kinds of cars.Van light trucks,tractors and trucks.3.Automatical thermistor protectin.4.Choice of normal change,quick change(boost)and quick start.5.Timer for quick charge.