6.250-amps 12/24 Volt jump starter pack for lithium-ion battery. Spark-proof connections and reverse polarity protection. Power source for recharging USB and 12V devices. LED light with 7 modes. Jump starts both gas and diesel engines up to Class 8+/CE Built-in voltmeter shows the voltage of the vehicle's battery for extensive diagnostics and troubleshooting Power 12V devices anywhere, like tire inflators, power inverters, and more The GB500+ is a portable 12/24 Volt lithium-ion battery jump starter pack that delivers 6,250-amps (80,000 J3S) for jump starting a dead battery in seconds (24 Volt, 3,000-amps 40,000 J3S). It features a patented safety technology that provides spark-proof connections and reverse polarity protection making safe and easy for anyone to use. It's a powerful battery booster that doubles as a portable power source for recharging USB devices, like a smartphone, tablet and more, or powering 12-volt devices, like a tire inflator, power inverter and much more. Designed for a car, boat, RV, truck and more with both gas and diesel engines up to 10 liters and more. * Protects against reverse polarity, sparks, overcharging, overloading, open circuits and overheating. * Switchable 12V and 24V modes. * Built-in voltmeter shows the voltage of the vehicle's battery for extensive diagnostics and troubleshooting. * 2200 lumen ultra-clear LED work lamp for extreme visibility. 7 light modes, including SOS and emergency flashing light. * Recharges USB devices, like smartphones, tablets, and more. * Power 12V devices anywhere, like tire inflators, power inverters, and more. * Jump starts both gas and diesel engines up to Class 8+/CE.