iPhone 6(S)(+) 90% battery wear after one year normal?

judino28

macrumors member
Original poster
Jul 29, 2008
56
12
My 6s battery was replaced free last December under the replacement program.

Now, Apple’s battery health is reporting the new battery as being at 90% health. This seems like it’s degrading faster than the original one as coconut battery had my old battery at around 82% health after two years of heavy use.

I also notice that sometimes it will drain faster than usual (down to 20% with less than 2 hours screen time and no background activity) and then charge very fast (from like 20% to 50% in 10mins). It then functions normally.

Is this normal or is there an issue? I plan to get a new battery next month anyway as I want to take advantage of the $29 replacement as I have no plans to get rid of my 6s. But, perhaps the old battery will be replaced under warranty due to these issues.
 

joeblow7777

macrumors 603
Sep 7, 2010
5,966
6,755
There's a lot of factors to consider, so it's difficult to say whether your battery is normal or not without knowing more about your usage.

In any case, Apple's rule of thumb is that it should take at least 2 years to reach 80% wear, so it sounds like you're within the norm.
 

BugeyeSTI

macrumors 68030
Aug 19, 2017
2,714
1,855
Arizona
80% is the threshold when considered faulty so it wouldn’t be covered under warranty. The first thing they do when you bring it in is run a device diagnostic that checks multiple system components and the battery will be considered good unless it reads 80% within one year of use..You can have it replaced regardless if you pay the $29 if you want a new battery..
 

Five_Oh

macrumors regular
Jan 7, 2017
230
201
Flyover Country, USA
I also experienced an issue with an Apple replacement battery in my son's SE.

About five months after receiving a new battery, the phone shut off and could not be started. My son said the battery had never performed as well as the original.

I noticed the case was slightly swollen. Apple replaced the phone.
 

AllergyDoc

macrumors 68000
Mar 17, 2013
1,549
3,386
Utah, USA
My wife’s 7 was at 82% at about 18-19 months. We could’ve touched it out another 2% but it was running poorly so we paid the $29 for an out-of-warrant replacement. Has run great since.

The behavior you mentioned is odd, but I don’t think Apple would do anything for you with your battery at 90%.
 

Ebok

Suspended
Aug 22, 2018
460
655
likely not defective but your usage could be the problem.

constantly leaving the phone plugged in constantly and charging multiple times per day not to a full charge (which will happen once it starts degrading) makes the battery health go down.
 

judino28

macrumors member
Original poster
Jul 29, 2008
56
12
likely not defective but your usage could be the problem.

constantly leaving the phone plugged in constantly and charging multiple times per day not to a full charge (which will happen once it starts degrading) makes the battery health go down.
I usually only charge it once per day, at night.
 

ACG12

macrumors 6502a
Jun 9, 2015
690
574
My wife’s 7 was at 82% at about 18-19 months. We could’ve touched it out another 2% but it was running poorly so we paid the $29 for an out-of-warrant replacement. Has run great since.

The behavior you mentioned is odd, but I don’t think Apple would do anything for you with your battery at 90%.
Mine was running poorly at 89% and one year of ownership. Luckily I didn’t have to pay for a new battery as I purchased Apple Care plus and I was having the speaker issue. Apple replaced my phone with a new white box.

I was actually shocked how poorly my battery wore out. My wife’s 7 plus was at 86% after two years.
 
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Closingracer

macrumors 68040
Jul 13, 2010
3,472
1,372
There's a lot of factors to consider, so it's difficult to say whether your battery is normal or not without knowing more about your usage.

In any case, Apple's rule of thumb is that it should take at least 2 years to reach 80% wear, so it sounds like you're within the norm.
Well my x is at 95% after 5 months so at this rate it would be around 75-80% maybe worse
 

karmatourer

macrumors 65816
Oct 18, 2011
1,006
151
In my house
My 6s battery was replaced free last December under the replacement program.

Now, Apple’s battery health is reporting the new battery as being at 90% health. This seems like it’s degrading faster than the original one as coconut battery had my old battery at around 82% health after two years of heavy use.

I also notice that sometimes it will drain faster than usual (down to 20% with less than 2 hours screen time and no background activity) and then charge very fast (from like 20% to 50% in 10mins). It then functions normally.

Is this normal or is there an issue? I plan to get a new battery next month anyway as I want to take advantage of the $29 replacement as I have no plans to get rid of my 6s. But, perhaps the old battery will be replaced under warranty due to these issues.
I had the battery replaced last month for $29 and the capacity of my mint 6S+ was 89% with 177 charging cycles in 3 years when they ran the diagnostics on it prior to damaging the camera and replacing it with a refurb that had a 90 day warranty. (Since traded for 10R,so yeah,wasted $29)
 

dazz87

macrumors 65816
Sep 24, 2007
1,329
1,337
Chances are apple are using used batteries for this $29.00 battery replacement
 

DJ_Smith

macrumors regular
Sep 13, 2018
142
99
Depends on charge cycles. The more the cycles the more wear level. Get it replaced under Apple’s $29 program which ends this December.
 

Closingracer

macrumors 68040
Jul 13, 2010
3,472
1,372
You just said it’s only been 5 months and gave a plus or minus of 2% based on a 5% change...

That’s not enough data to extrapolate a trend.
And yet I have ? I have already predicted my battery trend months ago with a plus or minus of 2%.
 

Kerry78

macrumors regular
Sep 14, 2016
167
43
My rose gold iPhone 7 was at 87% after 25mths it was getting those unexpected shutdowns, couldn’t be arsed getting battery replaced at apple it’s a 2 hour trip to Birmingham UK and I don’t trust Apple online care after they opened my partners brand new Matt black one and scratched it due to fault with it just weeks after he bought it launch day!

I sold my Rosie gold and swapped it for a Jet black one the battery was 94% on it when I got it but after 3 weeks it’s saying 90%

So it’s dropped quickly is there anywhere I can check how old the phone is or how many charge cycles it’s had?

Thanks
 

Knowlege Bomb

macrumors 604
Feb 14, 2008
6,515
2,243
Madison, WI
I seem to be an outlier with my battery health. Tomorrow at 4:45pm will mark a full year using my X and battery health is showing 88%. Seems from what I'm reading that this is pretty bad.

Would you all recommend I take advantage of the battery replacement program? I have no intention of upgrading this phone before next fall.
 

FeliApple

macrumors 65816
Apr 8, 2015
1,268
458
My rose gold iPhone 7 was at 87% after 25mths it was getting those unexpected shutdowns, couldn’t be arsed getting battery replaced at apple it’s a 2 hour trip to Birmingham UK and I don’t trust Apple online care after they opened my partners brand new Matt black one and scratched it due to fault with it just weeks after he bought it launch day!

I sold my Rosie gold and swapped it for a Jet black one the battery was 94% on it when I got it but after 3 weeks it’s saying 90%

So it’s dropped quickly is there anywhere I can check how old the phone is or how many charge cycles it’s had?

Thanks
If you have a Mac you can Download Coconut Battery for Mac here: https://www.coconut-flavour.com/coconutbattery/
(I have no affiliation to the company whatsoever. I'm just a happy user of it.)
 

boyzstuff

macrumors newbie
Dec 2, 2016
2
1
Had a similar experience, my 6s was experiencing unexpected shut downs after about a year (95% health) and got the battery replaced by Apple. The replacement battery started didn’t last 6 months before unexpected shutdowns. Took it back in and they replaced the device with a new one. It was out of warranty by that time.