Jump start systems jump starter 12 volt power A portable power unit that has a maintenance free, 18 ampere hour battery with a 12-Volt DC power source and #6 gauge, 28 inches cable that stays flexible in cold temperatures. It includes a convenient built-in charger transformer for automatic charging of the internal battery. Connect an extension cord to plug in the back to recharge - the charging LED will glow. The LED indicator helps to easily monitor the charging of the internal battery telling you when it is at full power, 75 percent charged or 50 percent or less. This portable unit is perfect for an auto or boat needs and is durable, rust and corrosion-proof, with a polypropylene case that resists fuels and solvents. 12 volt outlet, flex light. 300 CCA, 950 peak amps.