iOS 14.5 Will Recalibrate iPhone 11 Batteries to Fix Battery Health Bug

Apple's iOS 14.5 beta that's currently in testing introduces a new process for recalibrating the battery health reporting on the iPhone 11, 11 Pro, and 11 Pro Max.

battery health recalibration
As outlined in a support document, Apple says that the update will recalibrate the maximum battery capacity and peak performance capacity on the ‌iPhone‌ 11 models to address inaccurate estimates of battery health reporting that some users have encountered.

Symptoms of this bug include unexpected battery drain behavior or in some cases, reduced peak performance capability. Apple says that the inaccurate battery health reporting does not reflect an issue with actual battery health.

Once the update is installed, ‌iPhone‌ 11 users will see a message in Settings > Battery > Battery Health about the recalibration process, which Apple says might take a few weeks.

Recalibration of maximum capacity and peak performance capability happens during regular charge cycles, and this process might take a few weeks. The displayed maximum capacity percentage will not change during recalibration. Peak performance capability might be updated, but this might not be noticeable by most users. If a previous degraded battery message was displayed, this message will be removed after updating to iOS 14.5.

When the recalibration is complete, the maximum capacity percentage and peak performance capability information will be updated. If the recalibration indicates that battery health has indeed significantly declined, users will see a battery service message.

In some cases, recalibration may not be successful and a battery service message will pop up. Apple says that it will replace these affected batteries free of charge to restore full performance and capacity.

Related Forum: iOS 14

Popular Stories

maxresdefault

Five Features Coming to AirPods Pro 3

Friday June 27, 2025 10:52 am PDT by
Apple hasn't updated the AirPods Pro since 2022, and the earbuds are due for a refresh. We're counting on a new model this year, and we've seen several hints of new AirPods tucked away in Apple's code. Rumors suggest that Apple has some exciting new features planned that will make it worthwhile to upgrade to the latest model. Subscribe to the MacRumors YouTube channel for more videos. Heal...
iPhone Car Key WWDC 2025

Apple Announces 13 Automakers Planning to Offer iPhone Car Keys

Friday June 27, 2025 11:42 am PDT by
In 2020, Apple added a digital car key feature to its Wallet app, allowing users to lock, unlock, and start a compatible vehicle with an iPhone or Apple Watch. The feature is currently offered by select automakers, including Audi, BMW, Hyundai, Kia, Genesis, Mercedes-Benz, Volvo, and a handful of others, and it is set to expand further. During its WWDC 2025 keynote, Apple said that 13...
anker power bank recall

PSA: Anker Recalls Multiple Power Banks Due to Fire Risk

Friday June 27, 2025 4:16 pm PDT by
Popular accessory maker Anker this month launched two separate recalls for its power banks, some of which may be a fire risk. The first recall affects Anker PowerCore 10000 Power Banks sold between June 1, 2016 and December 31, 2022 in the United States. Anker says that these power banks have a "potential issue" with the battery inside, which can lead to overheating, melting of plastic...
Chase Sapphire Reserve Apple Perk Feature

Chase Sapphire Reserve Card Introduces New Perk for Apple Customers

Wednesday June 25, 2025 2:08 pm PDT by
Chase this week announced a series of new perks for its premium Sapphire Reserve credit card, and one of them is for a pair of Apple services. Specifically, the credit card now offers complimentary annual subscriptions to Apple TV+ and Apple Music, a value of up to $250 per year. If you are already paying for Apple TV+ and/or Apple Music directly through Apple, those subscriptions will...
A18 Pro Chip

New MacBook With A18 Pro Chip Spotted in Apple Code

Monday June 30, 2025 8:05 am PDT by
Apple is developing a MacBook with the A18 Pro chip, according to findings in backend code uncovered by MacRumors. Earlier today, Apple analyst Ming-Chi Kuo reported that Apple is planning to launch a low-cost MacBook powered by an iPhone chip. The machine is expected to feature a 13-inch display, the A18 Pro chip, and color options that include silver, blue, pink, and yellow. MacRumors...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching in a Few Months With These 12 New Features

Thursday June 26, 2025 2:00 am PDT by
Apple's next-generation iPhone 17 Pro and iPhone 17 Pro Max are around three months away, and there are plenty of rumors about the devices. Apple is expected to launch the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max in September this year. Below, we recap key changes rumored for the iPhone 17 Pro models:Aluminum frame: iPhone 17 Pro models are rumored to have an...
macbook air spacegray purple

Apple Planning to Launch Low-Cost MacBook Powered By iPhone Chip

Monday June 30, 2025 3:20 am PDT by
Apple is planning to launch a low-cost MacBook powered by an iPhone chip, according to Apple analyst Ming-Chi Kuo. In an article published on X, Kuo explained that the device will feature a 13-inch display and the A18 Pro chip, making it the first Mac powered by an iPhone chip. The A18 Pro chip debuted in the iPhone 16 Pro last year. To date, all Apple silicon Macs have contained M-series...
CarPlay Ultra Climate Controls

Here's Which Vehicle Brands Will and Won't Offer Apple's CarPlay Ultra

Friday June 27, 2025 9:52 am PDT by
Apple last month announced the launch of CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. There was news this week about which automakers will and won't offer CarPlay Ultra, and we have provided an updated list below. CarPlay Ultra is currently limited to newer Aston Martin vehicles in the U.S. and Canada. Fortunately, if you cannot...
apple watch ultra 2 new black

Apple Watch Ultra 3 Finally Coming After Two-Year Hiatus

Tuesday June 24, 2025 3:40 am PDT by
Apple will finally deliver the Apple Watch Ultra 3 sometime this year, according to analyst Jeff Pu of GF Securities Hong Kong (via @jukanlosreve). The analyst expects both the Apple Watch Series 11 and Apple Watch Ultra 3 to arrive this year (likely alongside the new iPhone 17 lineup, if previous launches are anything to go by), according to his latest product roadmap shared with...

Top Rated Comments

ApfelKuchen Avatar
56 months ago

So this is only for iPhone 11 and not 11 Pro models?
Skip the headline and read the first sentence of the article.
Score: 8 Votes (Like | Disagree)
now i see it Avatar
56 months ago
So that's why there's 10,000 "my battery health just dropped 5% in a day" threads in the iPhone forum
Score: 6 Votes (Like | Disagree)
subi257 Avatar
56 months ago
I am hoping this will be a good thing....can't make it worse...can it?
Score: 4 Votes (Like | Disagree)
JPack Avatar
56 months ago

I thought I had a bad battery with my XS as it was down to 84% capacity after 2.5 years, but then I checked cycle count and it was 850. Batteries are rated to 80% after 1000 cycles so it seems fairly close. I wish Apple would just show cycle count in the settings instead of having to find some debug tool on the computer. Apparently, though, iPhone 11 batteries should be better than that being a year newer. iPhone 12 is not supported with this, it seems, but they shouldn't have battery issues yet.
It's 500 cycles, not 1,000.
Score: 3 Votes (Like | Disagree)
thejadedmonkey Avatar
56 months ago
Is there a way to force this process to happen for non-iPhone 11 devices? At around 50% battery, my SE can drop 5% a minute, and then hang out at 13%-26% for hours.

But it still has 86% overall health.
Score: 3 Votes (Like | Disagree)
Ikertxo40 Avatar
56 months ago

My 11 Pro is down to 88% after a year and a half, which is shocking to me because I've never gotten below 95% on any previous phone after two years. I haven't changed my use or charging habits at all. Maybe this explains it.
Same here! My iPhone 11 pro, bought day 1, is at 88%. It was 92% before a couple of last updates, and dropped 4% in one shot!

My iphone x has 3 years and is at 86% using it the same way as the current 11 pro. I have warranty until september so if this continues dropping I hope I am at 80% before warranty is over, to ask for a free battery replacement!

I checked the cycles and the iphone x duplicates the 11 pro more or less, so i think my battery is deffective or so. Both iphones charged wirelessly at night with mophie 7,5w charger, sold by Apple.
Score: 2 Votes (Like | Disagree)