iPad Pro My 13” M4 Pro not charging over 52% with 80% rule enabled unless rebooted first

[MTShipp]

I am wondering if this is just me or a known issue?

I have a 13” M4 Pro charging issue that I have replicated twice in a matter of a few days. It only started showing this symptom when I allow the battery to drop below 15% with usage. If I don’t go that low, the problem does not occur. If I enable 80% battery limit, run down below 15%, put onto charge, it will not go above 52% charge unless you power off/on first even if left on charge for 12 hours. I have done this twice and it happened both times. If I power off and then on, it will then charge to 80%. I tried disabling the 80% rule without rebooting and that does not make it charge beyond 52%. I do not have another M4 Pro to test if specific to my device only.

Steps I perform:

1. Set 80% rule and charge to 80%
2. Use iPad until battery goes below 15%
3. Plug in and wait overnight (up to 12 hours) - it does the charging ding
4. Battery shows 52% the next day (the lightning bolt is still shown on screen)
5. Disable 80% rule and plug in - it again makes the charging ding and the lightning bolt shows
6. 1 hour later, still shows 52%
7. Unplug, power off, and then plug in so it powers up again and leave alone
8. About 2 hours later it has reached or is nearing 100%

I would expect with so many others with my same model and usage situation, we would see this reported by others. But I have yet to see it reported anywhere else. I wonder if my device or a bug in the 17.5.1 build for the M4 iPads.

 

[Bigwaff]

Are you using the 20W USB-C Power Adapter that came w/ the device?

 

[MTShipp]

Are you using the 20W USB-C Power Adapter that came w/ the device?

Yes; and the black braided USB-C cable too.

 

[MTShipp]

Came back to close this out. Went to the AS yesterday and they replaced my device. I took it in showing the 52% level and she plugged it in for a few minutes to their charger. It stayed at 52% but she only watched it for 2-3 minutes. It passed all of their diagnostics.

They claim to be sending it into Apple for them to look over it but they may just be blowing smoke. Regardless, they replaced it. If indeed it is an iPadOS bug it will come back. If it was hardware, it should be resolved.

 

[Jackbequickly]

“It does the charging ding”

It should only “ding” when you first plug it in. Is that what is happening?

 

[darkvoyager]

Came back to close this out. Went to the AS yesterday and they replaced my device. I took it in showing the 52% level and she plugged it in for a few minutes to their charger. It stayed at 52% but she only watched it for 2-3 minutes. It passed all of their diagnostics.

They claim to be sending it into Apple for them to look over it but they may just be blowing smoke. Regardless, they replaced it. If indeed it is an iPadOS bug it will come back. If it was hardware, it should be resolved.

Has the issue come back with the replacement iPad? I have similar issues but not the exact same. If the battery gets low, the iPad just doesnt recognize that it is plugged into a charger... Granted I have been running 18.1 beta so it could be chalked up to that... Reverting to 17.7 now to see if that permanently fixes the issue.

 

[MTShipp]

Has the issue come back with the replacement iPad? I have similar issues but not the exact same. If the battery gets low, the iPad just doesnt recognize that it is plugged into a charger... Granted I have been running 18.1 beta so it could be chalked up to that... Reverting to 17.7 now to see if that permanently fixes the issue.

Nope. It must have been hardware related. The replacement worked fine.