If you can't check the battery health of the iPad, it may be due to the following reasons:
IPad system version does not support battery health function.
First of all, you need to make sure that your iPad system version supports the battery health function. The battery health function first appeared in the IOS version 1 1.3. If your iPad version is lower than 1 1.3, then you can't check the battery health information.
To view your iPad system version, you can open Settings > General > About this computer, which can be found in the "Software Version" column.
The IPad battery health feature is turned off.
If your iPad version supports the battery health function, but you still can't view the battery health information, it may be because you have turned off the battery health function.
To turn on the battery health function, you can turn on Settings >; "battery" > "battery health", turn on the battery health function in the column of "optimizing battery charging".
IPad battery health has been damaged.
If your iPad version supports the battery health function, and the battery health function is not turned off, but you still can't view the battery health information, it may be because your iPad battery health has been destroyed.
When the battery health is damaged, iPad cannot read the battery health information. If the battery health of your iPad has been damaged, I suggest you replace the battery as soon as possible.
Pay attention to protect the health of iPad battery in daily use, and avoid frequent charging and excessive discharge. If you can't check the battery health of the iPad, you can first check whether the system version and the battery health function are turned on. If the problem still exists, it may be because the battery health has been damaged and the battery needs to be replaced.