ÿ LED indicates fully charged, charging, or recharge Multi-stage integrated charger provides a fast recharge up to 12.8 volts Automatic float mode is designed to provide a continuous charge without overcharging Activates trailer brakes upon separation of trailer and tow vehicle Weather/corrosion resistant, heavy-duty polymer case to protect battery and charger Breakaway switch with 7.5" lead wires 5 amp/hr battery Battery box dimensions - 5" x 4.125" x 4" Quick and easy to install NOTE: Make sure battery is fully charged prior to towing