Check battery health on your iPhone. All rechargeable batteries are consumables and have a limited lifespan — eventually their capacity and performance decline so that they need to be replaced. To learn more about your iPhone battery health and if a battery replacement is recommended, go to Settings > Battery > Battery Health & Charging.
macrumors member Original poster Oct 3, 2015 31 4 May 28, 2022 #1 I have an iPhone 11 with 78% of battery health. IOS 15.4 is recommending the change of the battery. I don't feel it
The battery percentage was actually above 95% two months ago. It is a tad faster ageing than usual but Apple will only replace it if it drops to 79% inside the 12 month warranty. (24 months with AppleCare+) At that rate it could well get there within 12 months. As for the iPhone 8, 96% after 2.5 years is almost unheard of - you were very lucky.iPhone 15 provides more details on battery health and lets users limit charge to 80%. Right after Apple released iOS 17 RC to developers and beta users last week, 9to5Mac found code references to
Nabolahh. 2011-12-29 17:09:00. 1. Reset your iPhone by holding down the sleep/wake button and the Home button simultaneously until your iPhone resets. Ignore any pop-up messages and keep holding down both buttons until the screen turns black and the Apple logo appears. Now it’s ready to learn new values for the capacity of its battery.2.Number of charging sessions, charging rate and more generally speaking temperature could affect the reported battery health. For example charging 10 times a day and keeping your phone at 95% - 100% would wear out the battery faster than if you charged from 50% up to 100% once a day. JuES.