iPad Air 2 randomly shuts off
The iPad Air 2 has been known to randomly shut off, even when there is plenty of battery life remaining. This issue has been reported by users since the device was first released in 2014. Apple has not yet acknowledged the issue or released a fix.
Possible causes of the issue include
A software bug
A hardware problem
A third-party app
If you are experiencing this issue, you can try the following troubleshooting steps
Restart your iPad.
Update your iPad to the latest software version.
Reset your iPad.
Restore your iPad to factory settings.
Contact Apple Support for help.