Yes, this is possible. From Page 6-2 of the D2 guide: ADJUSTING SETTINGS
You can adjust settings such as ground speed units (KTS / MPH / KPH), altitude units (feet /
meters), whether or not the D2 turns off when external power is removed/lost, and whether the
D2 automatically shuts down after a period of inactivity. To adjust settings on your D2:
[ch61623] Press and hold the Menu Button to enter the Settings Menu.
[ch61623] Press the Rocker to advance through different settings.
[ch61623] Move the rocker up and down to adjust a selected setting.
[ch61623] When you are finished, press the Menu Button again to exit the Settings Menu.
I know the D2 will start up when powered up from ships power. Can it be set to shutdown also when ships power is lost?
Thanks so much for getting back to me. I couldn't figure out how to get into the settings. Saw it in the manual but couldn't get it to work. Finally figured it out today. And see the settings.