The Noco GB20 400 Amp UltraSafe Lithium Jump Starter Power Bank is a portable lithium-ion battery jump starter pack that delivers 400-amps (4,650 J3S) for jump starting a dead battery in seconds.Lithium battery jump starter rated at 400 Amps (4,650 Joules3S)Spark-proof connections and reverse polarity protectionRecharges USB devices, like smartphones, tablets, and more100 lumen LED flashlight with multiple modes, including SOSJump starts petrol engines up to 4 litresProvides up to 20 jump starts on a single chargeThe Noco GB20 400 Amp UltraSafe Lithium Jump Starter Power Bank features a patented safety technology that provides spark-proof connections and reverse polarity protection making safe and easy for anyone to use. LED status indicators display the internal lithium batteries charge level and charging status. Error indicators show when connected in reverse polarity or temporarily disabled for thermal protection. The needle-nosed battery booster clamps are perfect for connecting th