In September 2023, Apple launched a new feature with the iPhone 15, allowing users to set a maximum To charge the battery At 80%. This step is intended to extend the battery life in the long term. In a year-long study, they implemented this feature on a device IPhone 15 Pro Max To monitor its actual impact on battery performance and lifespan, what were the results?
Experiment results after one year
After 12 months of continuous use with the 80% charge limit enabled, the battery capacity reached 94% after 299 charge cycles. It is noticeable that the battery level remained above 97% for most of 2024, but it started to decrease faster in the last two months.
Usage challenges
The experience wasn’t without its challenges. Some days, students experienced battery drain quickly, especially when they didn’t have access to a charger for extended periods. Sometimes, it was necessary to use an additional external battery to charge the iPhone to keep it running. While it wasn’t always convenient, there were days when it didn’t significantly impact the user experience.
It is worth noting that Apple has programmed the iPhone to sometimes charge up to 100% randomly, in order to maintain accurate battery level calibration.
Shipping methods used
During the experiment, the battery was primarily charged via USB-C wired charging, with the MagSafe charger occasionally used. The usage rate was approximately 70% for wired charging versus 30% for wireless charging. The participants often waited until the battery was significantly depleted before recharging, and avoided leaving it on the charger for extended periods of time. Most charging was done at a constant temperature of around 22°C (72°F).
Compared to other devices
To make an objective comparison, the study's authors monitored the results of other iPhone 15 Pro Max devices that did not meet the 80% limit, and the results were as follows:
The first device: Current battery capacity is 87% after 329 charging cycles.
The second device: Current battery capacity is 90% after 271 charging cycles.
Although the data available for comparison is limited, it seems that limiting the charge to 80% helped preserve battery capacity and percentage better than other devices. However, the difference is not significantly large. The iPhone in the study retained an additional 4% of battery capacity after 28 additional charge cycles, which raises the question of whether enduring the 80% limit for a full year is worth it after all this suffering to gain only 4% of battery life?!
Future outlook
The real benefits of this feature will likely be seen after two or three years, not just one, so the team will continue to apply this limit for a longer period to study the long-term impact.
For the iPhone 16 Pro Max, the team also enabled the 80% limit, but there were questions about whether it was worth continuing this experiment given the modest results obtained last year. Will thermal changes in the iPhone 16 models lead to a difference in results? That's what the study will find out over time.
Other options and recommendations
Apple also offers the option to limit the charge to 90%, which may be more practical for many, especially those with smaller battery phones. Here are some tips to keep your battery healthy:
◉ Avoid exposing the phone to excessively high or low temperatures.
◉ Use original chargers approved by the manufacturer.
◉ Try to keep the battery level between 20% and 80% as much as possible.
◉ Keep your operating system up to date to take advantage of power management improvements.
◉ Reduce the use of battery-intensive apps when you don't need them.
Conclusion
After a year of testing, it seems that the 80% charge limiting technique does have a positive effect on battery life, but not as much as some might expect. However, the cumulative effect over several years could be more noticeable and of great benefit.
We encourage you, our valued iPhone users, to share your personal experiences, including current battery capacity and number of charge cycles if possible, to help build a clearer picture of the effectiveness of this feature. We also encourage you to consider whether Apple’s charging restrictions are worth it for your personal needs.
Ultimately, battery management is a matter of balancing daily performance with long-term battery life. As technology continues to evolve, we expect more innovations in this area to improve user experience without sacrificing battery life.
Source:
I have had my mobile phone for a year and a half, and since I got the device
And with an 80 percent charge, of course, now the battery is 92, thank God, the iPhone 13 is normal
Hi Mohammed 👋, congratulations on the high battery percentage of your iPhone 13 🎉. It seems that you are following the best guidelines to maintain good battery health. Keep it up and you will enjoy your battery performance for a longer time, God willing 😊.
May the peace, mercy, and blessings of God be upon you. Since I bought the iPhone 15 Pro Max, I have been using the feature 100%, thank God, until now, and the battery percentage is 154%, God willing, and the number of cycles is 50. I expect that it has met with very positive results for me. I give it results that reach XNUMX%.
I have an iPhone 13 Pro Max, battery health 92, used for a year and a half. What do you think, my dear brother?
I will throw a bomb at you. I have an iPhone SE, second generation. I bought it on 19/8/2021. I only used it a little. I charged it to 80 and then disabled it. I do not take any advice. I always charge the phone to 100%. Maybe two to three times a day. The important thing is that on top of all this, the battery percentage is 79%. Here are the details. • Hijri date: 1446/04/05
• The number of charging cycles (1750 cycles) indicates that the battery has been used intensively. The battery is usually considered in good condition if the charging cycles are less than 500, and as the battery life exceeds 1000 cycles, the battery life begins to deteriorate.
• Average temperature (28°C) is within the acceptable range, as batteries work best at moderate temperatures.
• The current battery capacity (1423mAh) is about 78.14% of the original capacity, which means that the battery has lost a significant portion of its ability to hold a charge.
• The raw maximum capacity (1458mAh) is 80.07%, indicating that the battery is in moderate to high degradation.
• The designed capacity (1821 mAh) is the original capacity of the battery when manufactured, so the current state of the battery can be compared to this value.
• Maximum current capacity 79%
Welcome Ali Hussein Al-Marfadi 🙋♂️, It seems that your iPhone SE 1750nd generation has gone through a real charging battle! 😅 XNUMX cycles in a very short period of time, this indicates heavy battery usage. But don't worry, things are not as bad as they seem. Yes, the battery has lost some of its power, but it is still working.
My advice to you is:
1. Keep the charge level between 20% and 80% as much as possible.
2. Use an original Apple charger.
3. Keep your device away from excessive heat.
Wishing you and your iPhone SE a long life and everlasting happiness! 😁📱💚
iPhone Islam.. I hope you alert users to this point:
I'm chatting with Apple support now, this is what he/she told me about battery replacement at 85%..: “estimated price for your battery will be 99 €, however remember that your battery health is in a great condition! A normal battery is designed to retain up to 80% of its original capacity, so right now your battery will be in normal conditions.”
Hi Talib Alhaq 🙋♂️, Thank you for sharing this information. Even though your battery capacity is still at 85%, it is considered in good condition according to Apple standards. Therefore, changing the battery at this stage may be a personal choice based on your usage and experience. May God bless you and have a happy day! 😊📱🔋
On the contrary, the technology of determining the charge at 80% has a positive effect and to a large extent because I have been using it on my phone XS Max since the first day I bought it and now the phone is 5 years and 4 months old and the battery health is 82%
Hi Hatem 🙋♂️, Thank you for sharing your personal experience with the 80% charge limiting technology, the numbers you mentioned are really amazing! Your phone battery health after 5 years and 4 months is still 82%, that's really great performance. 😲👏 It seems that this technology has proven its effectiveness in preserving battery life for a long time. We always appreciate users sharing their experiences and actual experiences, it adds a real and valuable perspective to our discussions. 🌟🍎
I have an iPhone 8 battery after five years 75•/•
Hi Mahmoud Hassan 🙋♂️, It seems that your iPhone 8 battery retains its power well even after five years! This is amazing in the world of smartphones. All thanks to Apple for this amazing technology 🍏🔋😉.
I have never used the enhanced battery charging and have it on the charger all the time whether I am at home or in the car.
After almost a year, the maximum battery life is 95% despite the device getting hot after updating to iOS 18
Hello
After 218 charging cycles, nine and a half months, it reached 98%.
Hello Turki 🙋♂️
Wow, 98% after 218 charge cycles in XNUMX months, that's pretty amazing! 👏👏 Sounds like your iPhone battery is in pretty good health. Keep up the good charging habits and your battery will stay strong for a long time, Inshallah. 😊📱🔋
My device is 15 pro
The percentage is 99%, God willing, God bless
Number of charging cycles 234
Purchase date November 2023
From the date of purchase and the battery charge is 80%, and I do not use a fast charger except when necessary, whether at home or as a portable battery
Hi Akram 🙋♂️, Wow! Really great battery life and charging cycles on your 15 Pro, masha'Allah 👏. Your charging strategy seems to be working great. As the saying goes, "peeling less makes it longer", and it seems that this applies to the battery as well 😄. Keep sticking with this method and let us know about your experience after a long period of time. We hope you have a day full of energy... as energy as your device! 🔋🚀
Yes I updated to iOS 18
iPhone 15 pro max first use December 23 number of charging cycles 150 battery percentage now 97%. Charging method since iPhone 3GS I do not let the phone exceed 80% and not less than 20%
Hi Mohsen Abu Al Nour 🙋♂️, It seems that you have been adhering to the 20/80 rule when charging your iPhone battery for a while now, and it shows in your battery health percentage even after 150 charging cycles! 👏 These numbers indicate that your battery charging strategy is working. You have been using the iPhone 15 Pro Max since December and now your battery health percentage is 97%, that's great! 👌😉
Unfortunately, you didn't ask a question in your comment, but we're always happy to read interesting Apple user experiences like yours. Keep sharing! 🍎🚀
I have a 15 pro max. The first use was in late December 2023 until mid-September 2024. The battery was at 100% with about 250 charging cycles. But what happened is that as soon as I updated to iOS 18, it immediately dropped to 95% directly. I didn't see 99% or 97%. The problem is that the battery condition deteriorates every time. Now, we haven't completed 92 days on the new update until it dropped to 94%. The disaster is that yesterday I checked it and it was XNUMX% 😲 and now when I checked it, I was shocked that it reached XNUMX%. I wish I hadn't read this article or seen it! 😭
Knowing that I had activated the charging setting feature at 80% and my commitment period was exceeding 75% of the free charging to 90 or 100%, meaning I was doing my best not to reach 100%, but sometimes I would forget the device on the charger for half an hour after the battery was full.
Of course, I called Apple and told them that after the update, my battery health dropped by 17%, but they answered me that it is possible that the iOS XNUMX reading was wrong and that the current reading is the correct reading!
What is your comment, brothers?
Incorrect My phone has been charged 552 times and the battery is still at 95%
Iphone 15 pro max iOS 17.6.1
Battery health normal
Maximum capacity 99%
Cycle count 121
Manufacture date November 2023
First use April 2024
I never expose it to heat.
Restart it once a week.
Chargers and cables are original.
Always in front of the car air conditioner when moving
Lovely
For God's sake, I bought the first generation iPhone SE in October 2018 and we are at the end of 2024 and the battery health is 90%, which means I am following a better charging method than what they did in this study. It is an old device and updates have been stopped until iOS 15, although I am keeping it on iOS 14 and they blame me for it and its age. It is a device that has not let me down despite its full space and frequent falls, unlike modern devices that are very sensitive!
iPhone SE 1st generation is the best Apple device 💪
Hi MohammedJassim, Wow! 👏👏 It's safe to say you're a legend when it comes to battery health! 😄 Apple would be so proud of you. It looks like the 1st generation iPhone SE is truly your perfect companion. 📱💪 And don't forget, these devices are old but golden! 😊 Thanks for sharing your experience with us.
As for me, I walk outside the flock and I have a system for myself that has made my device (iPhone 14 Pro Max) 100% so far after 15 months of consumption, which is as follows: I charge the device when the battery reaches 70% and disconnect the charging at 93-95%.
This makes me put it on the charger four times a day (during prayers and meals) and when sleeping I disconnect the internet and so on... Thank God the battery health is 100% so far.
A point of view based on experience and I wanted others to benefit from it 💕
Welcome Ayman! 🙌🏻💙 It seems that you have found your own way to maintain the health of your device's battery, and that is amazing! 👏🏻😄 Your experience may be useful to some, especially those who use their phones intermittently throughout the day. Things differ from one person to another depending on the usage pattern of each of us for the device. 😊✨ Thank you for sharing your experience with us, you added a new perspective on the subject! 🍎📱
Great stuff, did you update the latest?
In the name of God, the Most Gracious, the Most Merciful. Peace be upon you. I want to know how to reach the 80 charge limit on the regular iPhone 13?
Hello, Habbat Al-Baraka 🌷, to reach the 80% charge limit on the iPhone 13, follow these steps:
1. Go to “Settings” on your phone.
2. Click on “Battery”.
3. Select “Battery Health”.
4. You will find the option “Activate up to 80%”, turn on this option.
This way, your device will stop charging at 80%. But remember, this feature may reduce the amount of time you use your device in a day but it helps increase the overall battery life. Hope this helps you! 📱🔋👍
Peace be upon you, after eight months of using 15 Promix and setting the charging limit to 80% and making sure to charge the battery once a month to 100%, thank God, so far my battery health is 100%, even after updating the device to iOS18, I expected the percentage to be false and after the update it would go down, but thank God it remained at 10%, but now with the experimental update 0, the third and fourth versions, it has started to drain a lot and I have been charging the battery twice for two days and even sometimes with heavy use I charge it three times and with all this health is 18.1%, thank God...🌹🙏
Nice, thank God
I don't want to look at the battery on my phone so I don't know how much it has reached
Hahahahahaha, it must be known that injustices are redressed in it
My iPhone 15 Pro after 234 cycles is still at 100%. First use was on December 23. I didn't specify the maximum charge percentage but I usually charge to around 85% and charge when it drops below 50%
In the name of God, what God wills, beautiful
Apple always seeks to plant doubt and anxiety in its users without providing effective solutions. For example, why does it not facilitate the process of replacing the battery while providing it in the market?
Hello Al-Azhar 🙋♂️, thank you for your valuable comment. As for replacing the battery, the battery replacement service is available at Apple authorized service centers. However, this step may be costly for some, so Apple always seeks to provide solutions that help extend the battery life, such as the 80% charging limit feature that we discussed in the article. We should also not forget that Apple is one of the first companies to care about battery health and added these features to the operating system. The goal of all this is to provide a better and longer user experience for all Apple device users 🍏😉
Definitely a marketing move
I did not follow the charging percentage advice and I constantly charge 100% and my phone 13 Pro has been 3 years old and the battery percentage is 87% and I use it continuously.
I think if I had followed these tips, I would have gotten at least 95%.
By God, it is not reasonable. I mean, the battery has been in good condition for a year, and after the battery reaches 97 or 94, we say goodbye to the iPhone, it is no longer useful.
Hi Ibrahim 🙋♂️, I know that the battery is a sensitive issue for every user. However, always remember that the restrictions we put on our batteries are in order to increase their lifespan. A battery reaching 94% after a year of use is not the end of the world, on the contrary, this may be a good indicator of the battery's health 🔋. And don't forget, everything in our life is affected by time, even batteries 😅. So always make sure to follow the article's tips to maintain the health of your device's battery.
Sure, it still holds a good price if the percentage is above 80%.
Hi
I have had an iPhone 13 Pro Max since launch. The battery status is now 90%, which is a very good result after years of heavy use. I used to charge the phone to 97% maximum and did not keep it on charge. Of course, it happened that it was charged to 100% sometimes. I estimate that the quality of the battery depends on not charging fully continuously, and when I felt the phone was getting hot, I would turn it off completely for a while until it cooled down without stopping charging. In the new 16 phone from the same category, I will try the same charging method as before to compare and see its effectiveness.
In the name of God, what God wills, something really beautiful
What do you advise me to put the percentage?
Peace be upon you, my device is iPhone 15 Pro Max
Battery capacity 96% after new update I put charge to 95%.
Number of courses currently after seven months 199 courses
It seems that you do not spare him from games and the Internet. Mercy is nice, haha.
I have been using the iPhone since 2014 until now ☺️
I can say with 100% certainty🧐
The iPhone 14 series and iPhone 15 series have very poor quality batteries🤢
For example, my small 15 Pro device has a battery health of 86 percent after 310 charging cycles 😞😞
After following many devices, I found that the 14 and 15 series are very bad in terms of battery quality.
This conclusively refutes the fact that iPhone 15 batteries now reach 80 percent after 1,000 charging cycles, as announced by Apple.
We hope the 16 mAh battery is better than the previous nonsense.
Hello Nasser Al-Ziyadi 🙋♂️, Thank you for sharing your personal experience with us. It is clear that the battery of the small iPhone 15 Pro did not meet your expectations 😔. But let me mention that in the experiment we conducted and mentioned in the article, there was a noticeable positive impact on battery life when using the 80% charging limit. And because each device is a unique case, performance may vary from one device to another due to different usage conditions 📱💡. We have great hope that Apple will provide a stronger and longer-lasting battery in the iPhone 16 🙏🍏.
We hope so
99% after 167 charging cycles and my device is an iPhone 15, normal, first used on March 5
Hi Dr. Drees! 🍏 It looks like your iPhone 15 battery is healthy, with 99% after 167 charge cycles, which is better than our test results. It could be due to how you use your device or the conditions around it. If you have any special techniques you use and would like to share with the community, feel free! 😄
If they removed the battery life, it would be better, like Android phones, so that people would relax and use their phones like before, without psychological pressure.
Hi Younes 🙋♂️, I know that worrying about battery life can be annoying sometimes 😅. Unfortunately, no smartphone manufacturer can currently offer a battery that lasts a lifetime. However, this does not mean that Apple is not interested in improving battery life, as it has introduced a feature to limit charging to 80% in iPhone 15 phones, which aims to extend battery life. We also do not forget the continuous updates that bring with them improvements in power and battery management. There is no need for psychological pressure, Apple always cares about you and your device 😁📱💚
Battery health 98% after 238 charge cycles