I have an iPhone 11 for 3 years and its battery has 800 cycles. The battery health is 82%. What primarily contributes to that: the age (3 years) or wear and tear (800 cycles)? Would the battery health be the same if the battery had only 200 cycles?
[Re-Titled by Moderator]
iPhone 11, iOS 17
Both battery age and number of charge and discharge are important when it comes to Li-ion batteries. Battery calendar degradation start on very first day and it gets worse if battery stays idle without any charge and discharge cycles. Charge and discharge also cause cycle degradation effects on batteries at the same time.
The best battery performance achieves by keeping battery state of charge( SOC) between 20% to 80%.
"Batteries of iPhone 14 models and earlier are designed to retain 80 percent of their original capacity at 500 complete charge cycles under ideal conditions.* Batteries of iPhone 15 models are designed to retain 80 percent of their original capacity at 1000 complete charge cycles under ideal conditions.*", Apple says.
AppleBoy123 wrote:
I’d like to replace the battery on the 12, at least, while I can still use AppleCare to replace the battery, but Apple uses that battery health indicator to determine when one qualifies for replacement under AppleCare - you have to drop under (or reach) that magic 80%. Since that’s the case, I believe Apple should be more transparent about how it calculated my batteries health levels. I’d love to see that algorithm. I’m not sure how to check how many cycles they’ve through , either, it doesn’t appear in the Battery settings.
Apple runs their own diagnostics to determine battery health. My iPhone actually said 82% on the phone but Apple got a different number and replaced it (for the standard fee).
IdrisSeabright wrote:
Apple runs their own diagnostics to determine battery health. My iPhone actually said 82% on the phone but Apple got a different number and replaced it (for the standard fee).
That's good to know. I'll take the iphone 12 down to the store and see what they say.
宝宝82 wrote:
I will not replace the battery. I will use my XR as longest possible & when it gets slow I’ll get a new phone
That's up to you. But, Apple considers the batteries not fit for use once they drop below 80%. At that point the phone's software will start throttling performance to avoid sudden shut downs. Your phone will become less and less fun to use.
My battery has been at 80% forever. My phone is an apple 12 and by midday every day it's in the single digits for battery. I basically have to charge it twice a day. I have been stuck at 80% forever. Does it ever go under 80%? Has anyone ever seen a number lower than 80%? I'm doubting it will ever go below in order for me to qualify for a free battery under AppleCare which I have been paying for for three years.
Phuketmom wrote:
My battery has been at 80% forever. My phone is an apple 12 and by midday every day it's in the single digits for battery. I basically have to charge it twice a day. I have been stuck at 80% forever. Does it ever go under 80%? Has anyone ever seen a number lower than 80%? I'm doubting it will ever go below in order for me to qualify for a free battery under AppleCare which I have been paying for for three years.
Yes, they do go below 80%. However, if it's at 80%, you should contact Apple. Their diagnostics are more accurate than the number on the phone.
I did contact Apple, they did the diagnostics remotely, they told me that I was eligible for a new battery so they made an appointment at the Apple Store. My husband took my phone in and within five minutes they told him that it was at 80% and they could not replace the battery. This thing is lagging and I feel it will never go below 80%. I hope I'm wrong. Not sure what the online diagnostics showed that the in-store diagnostics didn't show. But it was a waste of an apple visit.
alacrity288 wrote:
I have an iPhone 12
battery cycle count of 867
battery health at 86%
So are you saying it’s not accurate?
What I said is, "Their (Apple's) diagnostics are more accurate than the number on the phone."
Thank you for sharing your experience! I found this really helpful.
I bought my iPhone XR in October 2019. Battery health is now at 81% & charge cycles are 1021
I will not replace the battery. I will use my XR as longest possible & when it gets slow I’ll get a new phone
My iPhone 11 Apple battery has had 661 cycles . What does that mean and what would be the battery percentage?
I have an iPhone 12
battery cycle count of 867
battery health at 86%
So are you saying it’s not accurate?
Battery cycle's impact on battery health
