[iOS 11.3] Battery Health - Replaced Battery?!

"Hey guys,

I just installed an iFixit battery in my daughter's iPhone 7 with iOS 12.1.2 and the Battery Health feature works. Maybe apple corrected this or the battery is compatible with this feature now.

Update (03/30/2018)

I received this straight from iFixit support:

Thank you for contacting us about your battery health!

We are aware that Apple's iOS 11.3 update includes a beta release of the Battery Health feature. Some customers have already reported the same scenario with their device -- the battery is unable to determine it's current health state -- which has lead to them believing that their battery is defective. This is not indicative of a defective battery, simply iOS 11.3's lack of ability to read the diagnostic data from the battery at this time.

It is our current understanding that this feature may not operate with iFixit batteries as our batteries are not manufactured by Apple. That being said, iOS 11.3 is so new that it is possible there will be a patch coming soon that may enable your iFixit battery to work with this feature. We encountered a similar issue in the last Apple update, 11.2, where we saw a rise in users report sudden touch response issues after updating their phones to iOS 11.2 (which even affected users who had never replaced components on their device). Apple later rolled out an update that corrected this issue.

If the battery you have installed is not prematurely shutting down or otherwise behaving strangely, you can try rolling back your iOS to 11.2 and wait until Apple releases a patch to fix this issue.

Thanks!

iFixit Support

My response was:

I just hope they do, with iOS 11.3, the device will have performance management. I don’t have problems with the iFixit batteries but If its not working you can’t disable the slowdowns in the Battery Health screen under Peak Performance Capability since is not displaying anything.

Basically all phones with aftermarket batteries will start slowing down when battery starts loosing capacity while original battery users will have peak performance until is time to replace the battery.

Thanks for the detailed reply"

"So you know i just purchased a iPhone 8 brand new from apple updated the device to new iOS and my iPhone is already at 94% battery life. apple put this feature in because of there lawsuit a tried and true way to see if you have a bad battery is to check a few things.

1. is the battery swollen, lithium ion batteries do have life spans and will go bad just like your AA batteries swelling is a sign the battery is starting to go.

2. does the phone slow down and get laggy around 20% battery life, thats the phone attempting to slow down to keep the phone battery lasting longer its a sign battery could be replaced

3. the most annoying one do you charge your phone to 100% unplug it and it drop to something like 80% in a short time, thats a large sign that battery needs to be replaced

Lastly i would say that i wouldn't listen or worry to much about apples new battery life tracker its also just a beta model and apple is never good at being totally upfront about things so just because it says 80 or 0 if the phones working i wouldn't pay apple 100$ to replace it or replace it yourself with repair guide on ifixit"

"A friend of mine recently replaced the battery in my iPhone 6 Plus. Battery Health in Settings showed information on the battery pre-replacement but not after, even after a full charge-discharge cycle and reboot. It seems that this feature just will not get any information on third party replacement batteries.

But you can still get information on your battery. Aida64, free in the App Store, will show lots of detailed system information, including battery charge and wear level. My old battery showed about a 50% wear level (meaning it only held 50% of max charge) but the new one now shows a 0.51% wear level (meaning it holds 99.5% of max charge). I'm sure there are other apps out there that will show similar information, but Aida64 is basically my go-to on both iOS and Android."

This issue is not specific to ifixit batteries. In fact, I recently got my iPhone 6 battery replaced by Apple directly, and now I cannot view the battery health percentage, so it seems Apple has disabled the feature altogether if it's not a stock battery (or it's a bug). Really hope they fix/change it.

"I have similar problem with this new feature after replacing battery.

Mine is NOT SHOWING 100% capacity of new battery but 65% capacity and service status of previous very old battery...

Here is cross link [iOS 11.3] Battery Health Beta - No Change after Replacing Battery"

I have the same problem (unable to determine battery health) but on top of that, my iPhone 6 will also shut down and go into an endless power cycle loop once the battery charge drops to below 20%. iFixit should have given us a warning that their replacement batteries are proprietary and do not comply with Apple's specs (hardware and/or software wise). This really sucks!!!!!!!!!