With the car off, it depends on the size of the battery, and how much you're using the inverter. Schumacher says their 410 watt inverter will provide 70 watts of power to the 110V household outlet for ...

To address the demand for electrons, carmakers have been busy stuffing their machines with USB ports and 120V “household” outlets. Not every car gets it right, with some offering up only a single USB ...