Simacca

macrumors 65816
Original poster
Jul 31, 2008
1,162
427
UK, South East.
My launch day 8+ battery health is at 93%. Have I got anything to worry about or is the battery health section not that accurate? iOS 11.4
 

JPack

macrumors 604
Mar 27, 2017
7,339
12,493
Your phone is on the low side of battery health. Many people with iPhone 7 report 90-95%.
 
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aakshey

macrumors 68030
Jun 13, 2016
2,757
1,255
Not normal. Get it replaced by paying USD 29.

If you’re using fast charging then that’s the culprit.
 

NoBoMac

Moderator
Staff member
Jul 1, 2014
3,190
1,437
Not normal. Get it replaced by paying USD 29.

If you’re using fast charging then that’s the culprit.

No and no.

Again, the $29 battery replacement program is for out-of-warranty devices. An iPhone 8/8+ is still under warranty, so, ineligible.

https://support.apple.com/iphone/repair/battery-power

Through December 31, 2018, the out-of-warranty battery service fee is $29 for all eligible iPhone 6 or later models. Battery service at $29 may be limited to one repair per iPhone.

I fast charge once every day and my day one 8 is at 98%. That said, if OP is frequently running the battery down multiple times per day and fast charging multiple times a day and or heating up the device frequently (eg. really heavy use, sitting in a hot car), yes, the battery might be getting stressed more than most people. But since Apple supports USB-C charging on their devices, fast charge is a safe charging method.
 
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Ffosse

macrumors 68000
Nov 5, 2012
1,827
648
I'm surprised that both my 8 (bought Oct 17) and my X (January 18) both show 100%, although I'm not yet convinced of Apple's battery health accuracy.

Perhaps it is accurate and reflects that I've used both phones quite lightly.
 
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Simacca

macrumors 65816
Original poster
Jul 31, 2008
1,162
427
UK, South East.
No and no.

Again, the $29 battery replacement program is for out-of-warranty devices. An iPhone 8/8+ is still under warranty, so, ineligible.

https://support.apple.com/iphone/repair/battery-power



I fast charge once every day and my day one 8 is at 98%. That said, if OP is frequently running the battery down multiple times per day and fast charging multiple times a day and or heating up the device frequently (eg. really heavy use, sitting in a hot car), yes, the battery might be getting stressed more than most people. But since Apple supports USB-C charging on their devices, fast charge is a safe charging method.

My battery is usually between 40 and 50% by the end of the day, and then I will wirelessly charge in the evening, then switch off charger when it reaches 100%.
 

Simacca

macrumors 65816
Original poster
Jul 31, 2008
1,162
427
UK, South East.
I remember doing a hard reset which made the battery drop by about 3%. This was ages ago on iOS 11.

I still get really good battery life, so will most probably wait and see how it goes.
 

Petru246

macrumors newbie
Oct 12, 2018
1
0
Romania
Hi, bought my iPhone 8 in February 2018 and now I have 90% battery life. It is normal? I only charge it with the charger found in the box. I am still under one year warranty.
 

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