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JabroniCorleone

macrumors member
Original poster
Nov 8, 2022
58
12
Strange on Friday the battery health was 99,6% and now it’s 98,9%. Why is there so much up and down? When it came out of the box it was 98,4% if I remember correctly…. My battery is also from sunwoda…. Bad?
 

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Heat_Fan89

macrumors 68030
Feb 23, 2016
2,930
3,817
Strange on Friday the battery health was 99,6% and now it’s 98,9%. Why is there so much up and down? When it came out of the box it was 98,4% if I remember correctly…. My battery is also from sunwoda…. Bad?
I personally take those 3rd party apps with a grain of salt. I ran Coconut Battery a couple of days ago on my 6th gen iPad and it shows 91% health with over 161 cycles in 4 years of use. Today it shows 90% health and current charge capacity at 81% with 166 cycles. Except my iPad says the current charge capacity is at 95% and I don't recall doing 5 extra cycles in a few days. ;)
 

JabroniCorleone

macrumors member
Original poster
Nov 8, 2022
58
12
I found shortcut to directly read out the battery data on the iPad or iPhone. Seems more correct than coconut battery. Battery health is at 100% now. My iPhone shows 88% and 505 loadcycles
 

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SoYoung

macrumors 68000
Jul 3, 2015
1,545
956
I just swapped out my M2 iPad Pro because the battery never achieved a battery health > 97% after several weeks of using it. My new M2 Pro has a similar problem. Seems like most users are having similar experiences with the iPad battery. My current battery was made on 8.1.22 and both were made by Sunwoda. My iPhone 14 Pro Max over a 2 month period is still showing over 100% battery health. The battery was made by Desay on 9.5.22. I am using a combination of iMazing and Coconut Battery. Seems like the QC on the iPad is not as a good as the iPhone.
Mine was 96% out of the box and I have another « issue » with the battery of my M2 iPad. When I reboot the device, the battery % is never the same and can vary like 4% lower than before rebooting and I don’t have very good standby results as well. I’m on the fence if I return it or not because for the price I’ve paid, I don’t want to always worry about the battery. many people here said to forget about it and just use it but it’s many little issues that bring me a red flag about this because in my experience when batteries acted weird like this from the start there’s a good chance I’ll have real battery issues in the mid~long run range.
 

JabroniCorleone

macrumors member
Original poster
Nov 8, 2022
58
12
Mine was 96% out of the box and I have another « issue » with the battery of my M2 iPad. When I reboot the device, the battery % is never the same and can vary like 4% lower than before rebooting and I don’t have very good standby results as well. I’m on the fence if I return it or not because for the price I’ve paid, I don’t want to always worry about the battery. many people here said to forget about it and just use it but it’s many little issues that bring me a red flag about this because in my experience when batteries acted weird like this from the start there’s a good chance I’ll have real battery issues in the mid~long run range.
Could see this behavior also on my M2 12.9. had 92%. Restarted. 89%. Restarted 91%…. Strange isn’t it?
and look at my screenshots…. I’m no longer on 100% health anymore. After the first loadcycle I had 100 percent health and after another loadcycle I have only 99,79%….
 

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Mlrollin91

macrumors G5
Nov 20, 2008
14,172
10,187
Strange on Friday the battery health was 99,6% and now it’s 98,9%. Why is there so much up and down? When it came out of the box it was 98,4% if I remember correctly…. My battery is also from sunwoda…. Bad?
Batteries work in real-time, this is why Apple gives the average battery health and not the live battery health that Coconut does. Your battery will fluctuate hundreds of times a day depending on what is being done to the battery, e.g., standby, charging, heavy use, temperature, etc.

As long as the battery remains above 80% prior to hitting 1000 cycles, your battery is fine. Battery health is not linear either. It may drop to 85% after 100 cycles and remain there for 750 more cycles.
 
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tbeaumont

macrumors member
Nov 19, 2014
98
31
Atlanta
Batteries work in real-time, this is why Apple gives the average battery health and not the live battery health that Coconut does. Your battery will fluctuate hundreds of times a day depending on what is being done to the battery, e.g., standby, charging, heavy use, temperature, etc.

As long as the battery remains above 80% prior to hitting 1000 cycles, your battery is fine. Battery health is not linear either. It may drop to 85% after 100 cycles and remain there for 750 more cycles.
Best explanation about the battery...makes perfect sense....thanks Mirollin91 for sharing your thoughts!
 

H-L-T

Suspended
Oct 30, 2022
20
12
Kai-Tak
There's really no perfectly accurate method to measure battery health
Everyone here already understands that.

There are a variety of semi-accurate apps that provide a metric of where the battery is as a generalization. Most consumers don’t require an exact measurement, they simply want to know if the battery is nearing replacement or the overall condition, depending of the age of the device.
 
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