Go to Settings > Battery > Battery Health to check the iPad battery health. If your iPad doesn't have that option, ...
There is battery health data stored on your iPad, but you won't find it in the Battery menu. Here's a couple of ways to check it manually.
Apple's new M4 iPad Pro and M2 iPad Air models feature a battery health setting that is new to iPads and when enabled prevents the devices from charging beyond 80% at all times, which can extend ...