iPad Pro Randomly Crashes, Says Battery Dead (Since iOS 13 Updates?)

iPad at 13.1.3 has begun to crash at seeming random times.

Usually connected to launching an app (Firefox, App Store) or making a search in a browser.

Battery is at 100% and after crash will display 'battery dead, connect power' symbol.

Any thoughts or similar experiences?

(Will perform a restore to solve and report back.)