Get a Kensington 33362 Ultra Portable Power Inverter for $44.24 instead of $69.99. The Kensington 33362 Ultra Portable Power Inverter 150 plugs into your vehicle’’s power port or airline Empower port to provide AC power to mobile devices requiring up to 120 Watts of continuous power. From laptops to mobile phones, MP3s, PDAs even portable DVD players and many other small mobile devices, it’’s the most portable choice for power on the road or in the air.