Will replacing my iPhone battery effect the battery's health?

You will be rewarded with an iPhone with a new battery, which will start with 100%. But the ONLY way to get that, is to have Apple or an actual Apple Authorized Service Provider replace your battery. They are the ONLY ones who have authentic Apple Parts. DON'T let anyone else replace the battery in your iPhone.

You should only change your iPhone battery when the Battery Health reaches 80% or below. Once you replace the iPhone battery, the battery health will return to maximum capacity 100%.

Learn more about ⇢ iPhone Battery Replacement - Apple Support

-Zachyy ✌️

Danish0786 wrote:

If I will change my battery of my iPhone 13, what will effect in the battery health?

the effect(?)... a new battery.

iPhone Repair and Service / battery / cost - Apple Support

iPhone Repair & Service - Apple Support

≤ 80% "maximum capacity" is when Apple suggests the battery is eligible for replacement

Agreed, and you will receive a very persistent message on your iPhone ⇢