Automatic 6/12V setting turns off at full charge and turns back on if battery needs more power LED digital display indicates charging voltage, amperage, charge time, and countdown for start function Polarity indicated and protected Automatic bad battery detection Automatic 6V position for lower voltage requirements Designed for standard Lead-Acid, AGM, Gel Cell batteries AC Cord - 6' 18/3 120VAC/60Hz DC Leads - 6' with insulated copper plated steel clamps