12 Volt Battery Float Charger Car Truck Boat RV Auto Automobile Motorcycle ATV WaterCraft Lawnmower for Winter Storage Battery Float Charger outputs 600mA max to keep you battery topped off during off use season The sensing electronic circuit "floats" to maintain a full charge without overcharging like some other automatic battery chargers. Sensing circuitry can detect an under-voltage battery and will shut the charger off. 3' long cables + 6' long power cord for 9' reach-ability .. 110-120V 60Hz TransformerCE UL Approved 13.6V @ 0.600 Amps