How to check is battery replace or not

Hi Musakhan01,

Thank you for using the Apple Support Communities! Depending on your iPhone model and iOS version, you can check by following the guidance below:

iPhone Battery and Performance

For iPhone 6 and later, iOS 11.3 and later add new features to show battery health and recommend if you need to replace the battery. You can find these in Settings > Battery > Battery Health (with iOS 16.1 or later, find these in Settings > Battery > Battery Health & Charging).

Hope this helps!

Have a great day.