Battery performance is low, can I replace it for free

There appears to be nothing wrong with your iPhone's battery. Apple does not consider an iPhone's battery requires replacement unless it cannot maintain, as a minimum, an 80% charge after 500 full recharging cycles.

• iPhone Battery and Performance - Apple Support

Hi there.

If you are covered by AppleCare+ or your phone is still under warranty, Apple will replace your iPhone's battery free of charge.

If you are not covered, see this page to see how much it will cost to get a replacement battery.

readtheflippinmanual wrote:

Hi there.

If you are covered by AppleCare+ or your phone is still under warranty, Apple will replace your iPhone's battery free of charge.

If you are not covered, see this page to see how much it will cost to get a replacement battery.

Apple will generally not replace a battery that has a capacity over 80%.

I tend to recommend people reach out to Apple for diagnostics if they are close to 80% (85 or so). The diagnostics Apple does are a bit more sophisticated than what the phone does onboard.

Also, if the battery is losing charge very rapidly, even with a reasonable battery health.

Best of luck!

Thanks for clearing this up.