How do you tell how good your battery is on iPad

Unlike recent versions of iOS for iPhone, iPad does not have a native Battery Health function. However, some third-party PC and Mac applications do provide the means to extract this information.

Two of the most popular are Coconut Battery (for Mac), or iMazing (Mac and PC).

https://coconut-flavour.com/coconutbattery/

https://imazing.com/

There is no battery health options on the iPad, not like on the iPhones

For me, I tell by seeing how fast the battery drops. But that is just me.