The GB70 is a portable lithium-ion battery jump starter pack that delivers 2,000-amps (15,700 J3S) for jump starting a dead battery in seconds. It features a patented safety technology that provides spark-proof connections and reverse polarity protection making safe and easy for anyone to use. It's a powerful battery booster that doubles as a portable power source for recharging USB devices, like a smartphone, tablet and more, or powering 12-volt devices, like a tire inflator, power inverter and much more. Designed for a car, boat, RV, truck and more with gas engines up to 8 liters, and diesel engines up to 6 liters.