Never get caught with a dead battery! The Duracell 750 amp jump-starter restarts engines up to 8 cylinders with no "host" vehicle needed. Its internal rechargeable 9Ah battery delivers up to 750 peak amps of power. Charge smartphones, tablets and more with a built-in 2.1 Amp USB port, keeping your critical communications up and running. The Jump-Starter also features a tough weather-resistant housing with 12V auxiliary DC port, copper-clad 6 AWG jumper cables, LED battery fuel gauge, and a bright LED work light.