@daringfireball
iPhone 15 Pro Max.
80% limit since day one.
Heavy user.
Battery Manufactured July 2023
Battery First Use September 2023

Battery Health:
• 98% March 31, 2024 (215 cycles)
• 89% June 21, 2024 (321 cycles)

It dropped to 88% in early July where it has since stayed.

• 88% September 20, 2024 (457 cycles)

The 9% drop in 82 days was simply wild.
iPhone 16 Pro Max, Max Charge 95%
• 100% September 24, 2024 (5 cycles)

See you in a year.