MacBook Pro 13" M2 Battery Health

It's not typical but once it's out of warranty there's pretty much nothing you can do about it other than just pay for a replacement battery service. My Mac was at about 94% after about 20 cycles and 8 months. I had one Mac that was about 94% right out of the box with 1 cycle (probably from testing).

80% after 1000 cycles is a design target but not a guarantee outside of the warranty. If it manages to go under 80% during the warranty period (can happen with catastrophic failure) then that can be a warranty claim for a complimentary replacement.

It seems to me that this is a common issue.

I would like to receive an official answer from Apple.

I have 40 cycles and the health is at 90%. How can this be possible?

The mac is covered by an Apple Care. I do want a battery replacement.

Apple is not here on these forums. We are just other regular users such as yourself who volunteer our own free time to assist people.

Keep in mind Apple only just recently showed the Battery Maximum Capacity in macOS so people have never seen how the Lithium Batteries degrade over time. In fact, the Maximum Capacity can fluctuate up & down. For example....a battery with a Full Charge Capacity of 4,315 mAh (battery for MBPro 13" 2017). A 200mAh fluctuation results in a fluctuation of 5%. A 200 mAh fluctuation is not unusual for an Apple Lithium Battery. I only begin to worry about the battery once the fluctuations get to 400 - 500 mAh.

Design Capacity = 4,315 mAh = 100%

Full Charge Capacity = 4,115 mAh = 95%

Before Apple exposed the Battery Maximum Capacity value, the only people who may even have noticed were the users utilizing a third party app such as Coconut Battery to monitor their batteries health.

Unfortunately even most Apple techs are not aware of these specific details. I only discovered it when I analyzed my organization's Apple laptops when people were complaining of battery related issues, but macOS showed the Battery Condition as Normal and the Apple Diagnostics reported no issues either. Apple only cares about when macOS shows the Battery Condition is "Service Recommended", or when the Battery Cycle Count is over 1,000 cycles, or the Apple Diagnostics report a battery failure.

You can take the laptop to an Apple Store to be examined, but they won't do anything unless one of those conditions I mentioned are met and as @y_p_w mentioned.

My recommendation to everyone is to ignore the battery information until the battery no longer performs to your expectations to see if it merits a replacement. Some people may be happy with the battery performance even when the Battery Maximum Capacity is below 80%....it all depends on a user's workload & expectations.