Battery health
i bought my iphone 3 months ago and my battery health has dropped from 100% to 94%. Is it normal?
iPhone 12 Pro Max, iOS 16
That does seem a little high, however it would depend where you bough the phone. The iPhone 12 came out in 2020, if it has been sitting on the self for a year or so, this could explain why it's dropped to 94%.
Batteries degrade over time with usage due to chemical aging, that's just how they work.
You can expect about a 1% drop per month with average use on an iPhone. This is an approximation, that is why it may be plus or minus a few percent on a month to month basis.
Apple recommends replacing it when it reaches 80%.
About Lithium Ion Batteries
iPhone battery and performance - Apple Support (IN)
Here are some tips on maximizing battery life.
Batteries - Maximizing Performance - Apple