I have one Brand New Airplane & Auto Adapter never used still sealed in the package . The power Xtender adapter comes with a connector used on many Airplanes plus an adapter for standard cigarette lighters. Used on Major Airlines Including Delta Air Lines and United Airlines.  Output Voltage 5.0 to 24VDC, Output Power 60 W max, Input Voltage 12-16VDC, Input Current 6.5 max, Overload Protection Two Fuses, Weight 12 oz, Dimensions 1.3" x 2.3" x 4.8" . Complies with RTCA DO-160C Sections 18, 19, , 20,21 and FCC Part 15 Class B. Unlimited Power for Computing On The Go. Batteries make you mobile but unlimited power keeps you moving. So tap into power all around your world.