NOCO GB40 jump starter: total safety. The GB40 is a portable lithium ion battery jump starter capable of resuscitating a battery in a matter of seconds - thanks to the 1000 A it delivers. It features a proprietary spark-proof and reverse polarity safety technology, making it safe for anyone to use. Jump starter with a delivery of 1000 A With spark-proof technology and protection against reverse polarity It has USB charging for mobile phones, tablets, etc. 100 lumens LED flashlight, with different modes (including SOS) With a single charge, starts the battery up to 20 times Also valid for car, boat, caravan or truck with a gasoline engine up to 6 liters - diesel up to 3.