How much upgrade my battery health

Battery Health degrades as time elapses. It cannot be upgraded. Batteries are a consumable product.

You should change out the battery once your Battery Health reaches below 80% which will take over 2 years to reach under normal usage.

Here is some more reading on an iPhone battery and its performance ➔ iPhone Battery and Performance - Apple Support



Axel F.

Hello ~ Take a look here and what is the % of your battery?

Show the battery percentage on your iPhone, iPad, or iPod ...

Batteries - Maximizing Performance - Apple

~Katana-San~