Ignore Your iPhone's 'Service' Warning for Battery Replacements
Check Your iPhone Battery's Health—and if You've Been Throttled - WSJ
iOS 15.2 shows a service history of repaired parts in your iPhone - 9to5Mac
Apple is 'locking' some iPhone batteries in an attempt to discourage third-party replacements
iPhone Battery and Performance - Apple Support
Bug] Battery health says my battery is significantly degraded even though my battery is still at 100% capacity. I got it replaced from an Apple Service Provider in February. iPhone 6s iOS
The 'Your iPhone Battery May Need To Be Serviced' iOS Notice