If I recall correctly the answer is no... Not so much because the battery can't do it, but because a high draw DC output is not one of the supported output ports. You have a cigarette lighter, a couple of USB ports, and the 120v ac inverter Port. Neither the USB not cig port support high draw. To jump a car, you'd need to add a high draw dc circuit, likely an Anderson power pole connector to clamps on 12 gauge. Personally I keep a dedicated battery onboard for jumpstart duty and wouldn't replace it with a multi tasker like this. Its role is to be always charged, always in the car. For the purpose of high readiness posture, that means dedicated equipment, and a maintenance routine you stick to.