Spark proof during lead connection, reverse polarity protected and includes a 12-foot output cord and 5-year warranty * Perfect for charging all 12-volt lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell) * Complete 4-step charging program (Initialization, Bulk Charge, Float Mode) allows for optimization of battery power, without overcharging * Automatic charge cycle functionality switches to float mode after fully charging the battery * Solid state two color LED indicates stage of charger