The Noco GB40 is a high-quality jump starter for a dead battery in seconds. It can also act as a power source for mobile devices. Noco GB40 - At A Glance Compact, yet powerful lithium jump starter rated at 1,000 Amps - up to 20 jump starts on a single charge An ultra-safe and mistake-proof design with spark-proof technology An ultra-bright 100 lumen LED flashlight Powerful Battery Jump Starter The Noco GB40 is an easy-to-use lithium-ion battery jump starter pack that delivers 1,000-amps for jump starting a dead battery up to 20 times in seconds on a single charge. It has an incorporated with a patented safety technology that delivers spark-proof connections and reverses polarity protection making it safe and convenient for anyone to use. This powerful battery booster can also serve as a portable power hub for recharging USB devices, like smartphones, e-watches, tablets, and more on the go. Mini Power Source If you find yourself in distress, you don't have to fret at all. The Noco GB40 has an extraordinarily bright 100 lumen LED flashlight with 7 light modes that you can use to charge your devices. Compared to the Noco GB70 Boost HD 2000A, the Noco GB40 is quite portable and could be your saving grace when your battery suddenly stops. The battery also has an SOS and emergency strobe that can come in handy if you get stranded. The Noco GB40 is most suitable for a car, boat, RV, lawnmowers, truck, and more with gas engines up to 6 liters, and diesel engines up to 3 liters.