NOCO Boost XL GB50 1500 Amp 12-Volt UltraSafe Portable Lithium Jump Starter - Car Battery Booster Pack and Jumper Cables for up to 7-Liter Gasoline and 4-Liter Diesel Engines. Start Dead Batteries - Safely jump start a dead car battery in seconds with this compact, yet powerful, 1500-amp portable lithium car battery jump starter pack - up to 30 jump starts on a single charge - and rated for gasoline engines up to 7 liters and diesel engines up to 4.5 liters. Multi-Function - It's a car jump starter, portable power bank, and LED flashlight. Recharge smartphones, tablets, and other USB devices. It's easily rechargeable from any powered USB port in 5 hours at 2.1-amps. Plus, an integrated 200-lumen LED flashlight with seven light modes, including emergency strobe and SOS.