The NOCO Genius Boost Pro 4000A UltraSafe Li-ion Jump Starter, No. GB150, is a Li-ion jump starter for 12V batteries that offers spark-proof technology and reverse polarity protection. It can safely jump-start a dead battery in seconds and up to 80 times on a single charge, says the company. The GB150 integrates with a high-output 500 lm LED flashlight with seven light modes. It also features rapid charge technology that charges in three hours, plus a 12V auxiliary port for powering tire pumps, inverters, and lights. The GB150 is designed for use on gas and diesel engines up to 10L and more.