While the iPad has great battery life, battery life is like time and money: you can never have too much of it. This is especially true when you need to do something on your iPad and the battery is running low.
iPadOS 15: 14 Battery Tips You NEED to Know
There are several things you can do to avoid running out of power at a critical moment. The tips here aren’t meant to be used all the time — you don’t want to be without an internet connection in most cases, for example — but they’re good options if you want to extend your iPad’s battery life.
Your iPad’s Wi-Fi connection uses a lot of battery power, whether or not you’re using it while connected to the Internet. That’s because your iPad is constantly searching for networks. If you’re not connected and don’t need to use the Internet for a while, you can save your iPad’s battery by turning off Wi-Fi. Here’s how:
Tap the Settings app on your iPad's home screen.