The GB40 is a portable lithium-ion battery jump starter pack that delivers 1,000-amps (7,000 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. And designed for a car, boat, RV, truck and more with gas engines up to 6 liters, and diesel engines up to 3 liters.

• A lithium battery jump starter rated at 1,000 Amps (7,000 Joules3S)
• Spark-proof connections and reverse polarity protection
• Recharges USB devices, like smartphones, tablets, and more
• 100 lumen LED flashlight with multiple modes, including SOS
• Jump starts gas engines up to 6 liters, and diesel up to 3 liters
• Provides up to 20 jump starts on a single charge