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uandme72

macrumors 68000
Original poster
Mar 2, 2015
1,809
572
My iPhone X (two month old) battery has dropped to 99% capacity after 53 cycles and then to 98% capacity after 64 cycles within one week.
However, iPhone 7 battery is still 87% even after 580 cycles over two years.
Is my iPhone X battery faulty?
 

simonsi

Contributor
Jan 3, 2014
4,850
734
Auckland
The battery is an analogue/chemical device. Its capacity as measured will vary day-to-day, your expectations re accuracy and especially over such a short timeframe/cycles is simply way off.

Your worry that it may continue to drop at the rate of 1% per 11 cycles is highly likely to be unfounded. On current data you don't have any basis to say the battery is faulty.
 

BigMcGuire

macrumors G3
Jan 10, 2012
8,002
9,768
the Alpha Quadrant
Battery loss is not like a gas tank, it is not linear. I've had 96% on my 6s+ for hundreds of cycles. Get out an excel file, take readings (consistently at 100% when device stops charging) via coconutBattery every week for a few months to get an accurate read.
 

BugeyeSTI

macrumors 603
Aug 19, 2017
5,077
3,412
Arizona
My iPhone X (two month old) battery has dropped to 99% capacity after 53 cycles and then to 98% capacity after 64 cycles within one week.
However, iPhone 7 battery is still 87% even after 580 cycles over two years.
Is my iPhone X battery faulty?
Nothing wrong with your phone or battery. If your averaging 10-15 cyles a week you’ll be at 520-780 cycles after 12 months. That’s heavy use. My X purchased December 2017 has under a hundred cycles and shows 98% for comparison
 

uandme72

macrumors 68000
Original poster
Mar 2, 2015
1,809
572
Nothing wrong with your phone or battery. If your averaging 10-15 cyles a week you’ll be at 520-780 cycles after 12 months. That’s heavy use. My X purchased December 2017 has under a hundred cycles and shows 98% for comparison
So does it mean that my 98% at 64 cycles and your 98% at over 100 cycles do not directly link together.
Also that even if I have 98% at 64 cycles, it may possibly continue at 98% for around 200 cycles (say).
 

BugeyeSTI

macrumors 603
Aug 19, 2017
5,077
3,412
Arizona
So does it mean that my 98% at 64 cycles and your 98% at over 100 cycles do not directly link together.
Also that even if I have 98% at 64 cycles, it may possibly continue at 98% for around 200 cycles (say).
I’m just saying my phone is almost a year old and has the same amount of cycles as your two month old phone. Apple expects there batteries should be around 80% or more after 500 cycles. Your battery will most likely stabilize and stay at a certain percentage for a long time. It actually could even go up a percent or two. I would not be concerned with your battery performance, it seems to be wearing normally..
 

ras113

macrumors member
Oct 23, 2017
90
6
im one 257 cyles on 253 days ...OS is showing 99capacity and coconut app on macbook shows me 98.4%
 

freakomac

macrumors 6502
Nov 21, 2014
330
178
My iPhone X sat 100% for 5 months, now its close to 11 months / 350+ cycles and battery health is down to 85%.
 

Yun0

macrumors 68000
Jun 12, 2013
1,541
821
Winnipeg, Canada
Weeks of use and over 50 charge cycles, you have 98% battery capacity left, and you're nearly complaining..?

Also battery reporting is more accurate on iPhone 8/X & newer cause of some hardware changes over the 7.
 

aakshey

macrumors 68030
Jun 13, 2016
2,773
1,270
Weeks of use and over 50 charge cycles, you have 98% battery capacity left, and you're nearly complaining..?

Also battery reporting is more accurate on iPhone 8/X & newer cause of some hardware changes over the 7.

Dude 98% with so few cycles isn't normal.

98% at 150-200 cycles is normal .
 

aakshey

macrumors 68030
Jun 13, 2016
2,773
1,270
No clue where you're getting that bull info from, imagine how long batteries would last before that magical 80% capacity mark if that was the case..

I doubt you even observe battery life of 10 iOS devices a year. Lol.

The drop to 99% takes the longest amount of time. You need to study your basics.
 

christarp

macrumors 6502
Oct 29, 2013
463
521
my god the amount of people that worry about their battery health is ridiculous, no wonder apple didn't show it for the longest time. It's not a linear drop, it happens relatively randomly within a long term linear trend
 

Jimmy James

macrumors 603
Oct 26, 2008
5,476
4,059
Magicland
I don’t believe battery health is an analyzed result of the chemical reaction occurring inside the battery. It’s only an estimation.
 

LoveToMacRumors

macrumors 68020
Feb 15, 2015
2,462
2,127
Canada
My iPhone X (two month old) battery has dropped to 99% capacity after 53 cycles and then to 98% capacity after 64 cycles within one week.
However, iPhone 7 battery is still 87% even after 580 cycles over two years.
Is my iPhone X battery faulty?
defective battery
mine is still at 99% after a year.
 
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