12v, 500 Amps 17Ah Battery Jump Starter Power Pack. Max Engine Size: 2.0L Polarity Protection. 2 x LED Worklight. Powerful Battery. 2 Amp USB Socket. Internal Battery: Sealed Lead Acid. Internal Battery Capacity: 17AH. DC Socket Maximum Continuous Load: 12 Amps. Jump Start Cables Length Approx: 1.0m. PLEASE NOTE: This power pack will not function correctly unless a residual voltage of 1.5v or more is detected from the vehicle battery.