How to check your iPad’s battery health | Tom’s Guide
Knowing how to check your iPad’s battery health might sound easy, but it’s actually strangely hard information to find, despite how important that data is. Batteries degrade over time, so it’s handy to know how your long-serving tablet’s faring, or how healthy an iPad is if you’re trying to buy or sell it second-hand.
Be sure to read to the end to get the Shortcut which makes it much easier. Apple really should add the Battery health status to the settings app.