On Wednesday, April 29, 2015 at 6:32:08 AM UTC-4, wrote:
Dynon has a very good answer: http://www.dynonavionics.com/docs/PocketPanel.html.

To meet Kirk's request for integration with moving map...
The D2 integrates wirelessly with several 3rd party apps so a programming API exists. Whether Dynon would make the API available to glider App developers (like the XCSoar team) is unknown.

On Wednesday, April 29, 2015 at 10:15:51 AM UTC-4, Tango Whisky wrote:
Until the main fuse blows.

The Dynon allows you to tie into the main DC supply, but it also contains an internal battery with 4-6 hours of juice. I suspect that there is a fail over mechanism.

The Stratus2 AHRS https://www.foreflight.com/products/stratus/ requires an 'Ipad' but it also offers Synthetic Vision and ADS weather (not offered on the D2.