Innergie mCube Mini 65 Watt Universal Auto and Air Adapter for Notebooks and Portable Devices (3 Year Warranty and Energy Star Certified) The most powerful revolutionary charging solution in the smallest profile possible. Charge your laptop on the move in cars and airplanes. Supporting range of 15-21 volts, the mCube Mini is able to support a wider range of laptops. With special design USB power port, it gives you the capability of charging all your standard USB devices. With extremely high power efficiency, you can reduce your energy costs and reduce your CO2 emission.