I've tried to use an old iPad as a wall-mounted control panel. The device has continuous power but will occasionally run down its battery anyway, especially when displaying the Home Assistant app. Not consistently reproducible and annoying, but makes the device a poor match for what I want to do with it. It's a shame because it could have had a good, long post-retirement career in this role if it could only run at peak use while charging without drawing down the battery.
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