Cranking Peak Amps • Cold Cranking Amps: 450A • Start Current Amps: 500A • Peak Current Amps: 900AHeavy duty jumper clamps Both the wires are pure copper to ensure the best conductivity and power transfer possible. Powerful 900 Amp Jump Starter Portable jump starter that can jump multiple vehicles on a single charge. Portable USB Charger 18,000mAh dual USB power bank is capable to fully charge most smartphones, tablets, phablets, bluetooth speaker, activity tracker, smart watches and other 5-volt USB devices. Ultra Compact Unlike traditional bulky jump starter packs, it's small enough to store in your glovebox and light enough to pack in your bag. Effortlessly roadside assistance Never spend too much money on calling a tow truck or time for roadside assistance, just use the portable jump starter to start the engine. You do not have to stuck in the parking lot for hours. ATTENTION • It may not be able to start your engine If the unit is below 25% battery life. • Do not connect the positive and negative polarity together when the unit is powered. • Please disconnect the jumper clamps within 10 seconds after successfully jump start the vehicle. Capable to jump most vehicles • Gasoline engine up to 6.5 Liter. • Diesel engine up to 4 Liter.