EmPower (aircraft power adapter)

Travelers in the 2000s bought EmPower adapters, frequently from duty-free shops at airports, to run laptops and other electronic equipment without using battery power.

EmPower is a trademark registered initially by Primex Technologies (VA) and assigned to Astronics Advanced Electronic Systems, Inc., in Kirkland, Washington, United States.

Subsequently, the trademark has been expanded to include not just the proprietary 15 V DC connector but also the 120 V 60 Hz AC in-seat power (and video entertainment) systems.

Modern laptop batteries, however, include a temperature sensor that should compensate for the reduced cooling at altitude.

EmPower is a 120-volt universal connector type found on many commercial airlines designed to provide power to travelers' electronic devices.