12V Automatic Battery Float Charger Indicator Trickle Charger Car Boat Battery Auto battery charger ; Battery float charger: 12V DC Input voltage: 110 Volts AC 60Hz ; Output: 12V DC 500ma ; Maximum output: 13.2 volt DC Automatic emergency shut-off ; Recommended for batteries of 5-125 AMPS hours Perfect for battery storage for cars, motorcycles, boats and etc. Quantity: 1 ; Weight: .70lbs