iPhone 8(+) Battery health 88% and the phone is 8 months old?

orangepeel2014

macrumors newbie
Original poster
Jul 4, 2018
18
12
i have a IPhone 8+ and I just checked my battery health and it’s down to 88% after 8 months is this considered normal?
 

alpi123

macrumors 65816
Jun 18, 2014
1,017
953
To be honest it's possible if you didn't take care of your battery at all. Still, these are only numbers. If you feel like your phone drains much quicker, you can contact Apple and see if they can fix it.
 

joeblow7777

macrumors 603
Sep 7, 2010
5,966
6,755
It's a bit last minute, but if you're concerned, Apple is still doing cheap battery replacements until the end of the year. I learned just yesterday that if you have Apple Care it's free, regardless of the health of your battery.
 

Kerry78

macrumors regular
Sep 14, 2016
167
43
Go into Apple Early tomorrow so they can replace your battery before the price goes up to £45

I had my battery replaced on my iPhone 7 yesterday that’s 11 months old when I got it a month ago it was 94% battery health but Wed this week it had gone down to 84% Apple ran diagnostics on it twice couldn’t tell me anything my guess bad battery or iOS 12
 

AppleHaterLover

macrumors 68000
Jun 15, 2018
1,900
1,907
To be honest it's possible if you didn't take care of your battery at all. Still, these are only numbers. If you feel like your phone drains much quicker, you can contact Apple and see if they can fix it.
It's possible if you use your phone a lot.

The 7+ I got as a replacement to my old broken one from Apple in February was down to 89% after less than 10 months - but I'm on my phone all day long, and probably put 400+ cycles on it in that time. So that's fair wear.
 

dazz87

macrumors 65816
Sep 24, 2007
1,331
1,338
88% after 8 months thats bad......4 months on my 8 plus it shows 100% and 99% on coconut battery
 

GP-SE

macrumors 6502
Feb 27, 2013
316
43
I was shocked, my launch day (15 months old) iPhone 8 plus shows 97% battery health. I'm not a heavy user, so I usually charge it every 2-3 days when it gets to 50%. I also have never let the battery drop below 30% as I know Li-Ion batteries doesn't like to be run down low.
 

dazz87

macrumors 65816
Sep 24, 2007
1,331
1,338
I was shocked, my launch day (15 months old) iPhone 8 plus shows 97% battery health. I'm not a heavy user, so I usually charge it every 2-3 days when it gets to 50%. I also have never let the battery drop below 30% as I know Li-Ion batteries doesn't like to be run down low.
shocked? You are barely using your phone.
 
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ImAnAgent

Suspended
Oct 11, 2018
273
209
My mind
I bought my 8+ in April and it's capacity is shown as 96% in the battery app and the charge cycles in coconut battery show as 98. Coconut battery shows my capacity as being 97.6% .

I chaerg my battery when it gets down to 5% and charge it all the way up to 100.
 

crashnburn

macrumors 6502
Nov 18, 2009
338
13
Go into Apple Early tomorrow so they can replace your battery before the price goes up to £45

I had my battery replaced on my iPhone 7 yesterday that’s 11 months old when I got it a month ago it was 94% battery health but Wed this week it had gone down to 84% Apple ran diagnostics on it twice couldn’t tell me anything my guess bad battery or iOS 12
Weird. Did they give an option or force you to update to latest iOS? I am trying to avoid an iOS Update for this Battery Replacement as the Partner Store insists they have to do it.

It's possible if you use your phone a lot.

The 7+ I got as a replacement to my old broken one from Apple in February was down to 89% after less than 10 months - but I'm on my phone all day long, and probably put 400+ cycles on it in that time. So that's fair wear.
I am currently on 92% / 204 cycles so I am wondering if the 29$ Battery Offer is worthy? Especially since I wish to avoid the Compulsive iOS update from 11 to 12.
 

gary77

macrumors member
Sep 23, 2017
53
11
London England
Got my iPhone 8 on December 1st battery dropped to 99% already abit surprised by that not sure if its something to worry about but it hasn't dropped since
 

BigMcGuire

Contributor
Jan 10, 2012
4,623
5,669
California
Got my iPhone 8 on December 1st battery dropped to 99% already abit surprised by that not sure if its something to worry about but it hasn't dropped since
Battery wear isn’t linear like a glass of water. I’ve had phones come from factory 108% to 96%. The 96% one kept its life best after 230 cycles. I wouldn’t worry about it. Use coconutBattery to find true capacity and monitor weekly over months.
 

crashnburn

macrumors 6502
Nov 18, 2009
338
13
Why? iOS 12 is great.
Blows my mind why anyone would wanna be on iOS 11 when iOS 12 is out.
Previous older apps compatability
Jailbreak- ability
lots of reasons..

Battery wear isn’t linear like a glass of water. I’ve had phones come from factory 108% to 96%. The 96% one kept its life best after 230 cycles. I wouldn’t worry about it. Use coconutBattery to find true capacity and monitor weekly over months.
Interesting. This 96 was on i8? I am currently at 204 cycles on an i7?
 
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