Battery shuts down after a few minutes

[MichaMMA]

I assume you mean the displays, not the battery ? ( press Pos1 to check ATC )

If so, then sounds like topics similar to this:

Garmin G1000 black screens on C172 & DA62

Hi, MSFS works fine and I normally fly with CRJ and PA28 Justflight. Today, after a long time, I wanted to try the Cessna 172 with Garmin G1000 again and found both screens black. To try to solve: Community emptied Uninstalled and reinstalled all Cessna 172 with Garmin G1000 Tested with “ready to fly” start on the runway. The above did not change the situation: always black G1000 screens. The same occurs with the Diamond DA62. Other aircraft on which other Garmins such as G3000 are instal…