The GB150 is a compact, yet powerful lithium-ion jump starter for 12-volt batteries. With it, you can safely jump start a dead battery in seconds - up to 80 times on a single charge. It's mistake-proof, making it safe for anyone to use and features spark-proof technology, as well as reverse polarity protection. The GB150 lithium jump starter integrates with a high-output 500 lumen LED flashlight with seven light modes, holds its charge for up to one year and features a USB battery pack for recharging personal devices on the go - up to 12 smartphone recharges. The GB150 features rapid charge technology that charges in just over three (3) hours, plus a 12-volt auxiliary port for powering tire pumps, inverters, lights and more. It's rated at 4, 000 Amps (22, 500 Joules3S), and suitable for use on gasoline and diesel engines up to 10 Liters and more, such as a car, boat, truck, diesel pickup, tractor and more. Includes the GB150, HD battery clamps, USB charging cable, XGC male plug, XGC female plug, XGC cable, microfiber storage bag, our 1-year hassle-free limited warranty, and free lifetime customer support. Other commonly used search terms include: jump starter, jumper cables, car jump starter, battery jumper, car starter, car battery jump starter, car jumper, jump pack, car jump, jump starter power bank, battery booster, battery jump, jumper pack, jumper battery, battery jump pack, portable jump starter, jumpstart, jumper starter, battery jump box, jump starters, genius boost, booster pack, portable car battery jump starter, jump starter pack, jumper box portable power, jumper box, jump starter kit, jump battery, noco genius boost, lithium jump starter, jumper starter diesel, diesel jump starter, and battery jump starter." Other commonly used search terms include: jump starter, jumper cables, car jump starter, battery jumper, car starter, car battery jump starter, car jumper, jump pack, car jump, jump starter power bank, battery booster, battery jump, jumper pack, jumper battery, battery jump pack, portable jump starter, jumpstart, jumper starter, battery jump box, jump starters, genius boost, booster pack, portable car battery jump starter, jump starter pack, jumper box portable power, jumper box, jump starter kit, jump battery, noco genius boost, lithium jump starter, jumper starter diesel, diesel jump starter, and battery jump starter. LED Flashlight - 500 Lumens It's not always the battery jump starters fault. There is a myriad of reasons why your car won't start (e.g. starter problems, worn-out battery cables). But with a built-in digital voltmeter, you can quickly determine if it's a discharged battery or something else. If the voltmeter shows a good battery at 12.7-12.8 volts, it is most likely another problem