Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

Djay_hr

Cancelled
Original poster
Feb 14, 2021
9
5
Hey, my iPhone 11's battery health is dropping by 1% every week, I follow the 20-80% charge-discharge cycle, I don't play games on my phone, neither does my phone heats and I am a moderate user.



everything was fine until January 2021 but from mid January to February 15th battery health has gone down from 89% to 84% (I have observed that its dropping 1% every week roughly speaking)



is this a serious problem?



I have purchased this iPhone on 18th October 2019 and its 1 year, 3 months, 28 days old

battery health has dropped from 100% to 89% in 1 year, 2 months and 89% to 84% in just 30 days.



what seems to be the problem?
 

BigMcGuire

Cancelled
Jan 10, 2012
9,832
14,029
You really can't tell what the problem is. Some batteries die rapidly, others take a long time to die. I would take your phone and plug it into a Mac and look at it with coconutBattery or something similar - to get a capacity reading on it - especially at 100% charge.

While most of the phones I've owned have kept within 6% of design capacity after 2 years - some others aren't so lucky or use their phones heavier.

Do you have AppleCare+? If that drops below 80% Apple may replace it under AppleCare+.

Otherwise:


"iPhone Owners
Your battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles. The one-year warranty includes service coverage for a defective battery. If it is out of warranty, Apple offers a battery service. Prices and terms may vary."
 
  • Like
Reactions: Djay_hr and LFC2020

macdogpro

macrumors 6502a
Jul 22, 2020
656
494
How’s your daily and 10 days battery usage pattern?
Any rouge app in the background maybe?

My previous iPhone 6 went down to 84% in 4 years (no 20-80% rules, 5W and 10W Apple charger alternately).
The second replacement battery went down to 91% in about 2 years (avoiding below 20% rules and same chargers).
Sometimes the phones heats up more often due to the aging hardware trying to keep up with newer updated app.
 
  • Wow
Reactions: Djay_hr

Spetsgruppa

macrumors 6502a
Feb 3, 2021
726
436
my wife's iPhone 11 Pro Max is also at 89% battery health after 1 year...But she is an extreme user(charges when almost dead and overcharges often) so its fine for her i guess...
 
  • Wow
Reactions: Djay_hr

Shadowbech

macrumors G3
Oct 18, 2011
9,038
5,894
my wife's iPhone 11 Pro Max is also at 89% battery health after 1 year...But she is an extreme user(charges when almost dead and overcharges often) so its fine for her i guess...
They don't overcharge per se. When it's fully charged to 100% it will stop charging and remain on power. They have a small chip in them so it will tell it to stop charging once it's full.
 

Djay_hr

Cancelled
Original poster
Feb 14, 2021
9
5
How’s your daily and 10 days battery usage pattern?
Any rouge app in the background maybe?

My previous iPhone 6 went down to 84% in 4 years (no 20-80% rules, 5W and 10W Apple charger alternately).
The second replacement battery went down to 91% in about 2 years (avoiding below 20% rules and same chargers).
Sometimes the phones heats up more often due to the aging hardware trying to keep up with newer updated app.
How’s your daily and 10 days battery usage pattern?
Any rouge app in the background maybe?

My previous iPhone 6 went down to 84% in 4 years (no 20-80% rules, 5W and 10W Apple charger alternately).
The second replacement battery went down to 91% in about 2 years (avoiding below 20% rules and same chargers).
Sometimes the phones heats up more often due to the aging hardware trying to keep up with newer updated app.
here’s my battery usage stats
 

Attachments

  • C3E7FD71-D25C-405B-8687-461525BB9D8F.png
    C3E7FD71-D25C-405B-8687-461525BB9D8F.png
    453.9 KB · Views: 285

cutienoua

macrumors regular
Sep 30, 2012
128
17
are you using wireless charger?
I have an iphone 11 , always used fast charger usb-c, still at 100%.
 
  • Like
Reactions: Djay_hr
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.