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iPad 2017 iPad Pro 10.5 Rapid Battery Drain

rytrunkie

macrumors newbie
Original poster
Feb 9, 2008
9
0
I am at my wits end.

I have spent hours on the phone with apple support - I am reaching out to the community to see if there is any assistance/input that others are willing to share.

My iPad's battery is discharging at a high rate. I first noticed this the morning of September 12, 2020 as I went to sleep that night with the battery around 70-80% and woke up with the battery around 20%. The iPad was on standby (screen off, apps still open in the background) and was not used at all that night. I was running iPadOS 13.7 since the day it was released.

Since September 12 I have tried the following:

  • erased iPad
  • restored iPad from iTunes
  • DFU restore from iTunes
  • Updated to iPadOS 14 and performed all the same operations listed above
It should be noted that in each of the above steps, I did not restore from backup nor did I sign into iCloud, nor did I download any apps to the device. None of the above actions changed the rapid drain on the battery. In the last 18 hours, my device went from 100% to 71% with 0 on screen time from me.

AppleCare informed me that my battery was at 97% capacity but received an error and could not tell me the cycle count (which I find strange and indicates that there is an actual problem with the battery, that is it not a software issue). iMazing reports that my battery level is at 87% and my cycle count is around 150.

iMazing also reports that my iPad Mini (retina) is at 93% battery with over 750 cycles.

I have downloaded the console logs from iMazing and I one of the consistent lines of code that is appearing is:

  • mDNSResponder[151] <Notice>: [Q0] mDNSCoreReceiveResponse ignoring <mask.hash

There are thousands of lines of code and I really have no idea what I am looking for nor what I am looking at.

My requests are:

  1. Anyone else experiencing/have experienced the same battery drain? I did a search and found that there were others but none in the last 90 days that appeared to have a similar experience that I am.
  2. Are there any resourced online to help me interpret the code? - is there a specific error message or syntax that I can search the lines of code for to indicate that there was some sort of failure?
  3. Anyone have insight as to whether or not the code posted above is anything that could cause the drain?
I just can't buy that the battery is in worse condition than my iPad mini which is 4+ years older than the Pro and has seen much more usage.

Any assistance is greatly appreciated.
 

sparksd

macrumors 68040
Jun 7, 2015
3,917
2,599
Seattle WA
I had run into strange battery drain on my 10.5 a while back and what fixed it for me was completely disabling Siri. It wasn't enough to just turn it off, I had to go through all of my apps and turn off Learn from this App for Siri and Search under each one. Worth a try.
 
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rytrunkie

macrumors newbie
Original poster
Feb 9, 2008
9
0
Thanks for the suggestion. I have done what you recommended (turned off every setting under Siri in the Settings app). I will continue to monitor.

@sparksd - what OS were you using when you made the change and what OS are you using now? I am curious of an update to the OS has helped you as in my situation, the drain was present under 13.7 and is present under 14.0.
 
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sparksd

macrumors 68040
Jun 7, 2015
3,917
2,599
Seattle WA
Thanks for the suggestion. I have done what you recommended (turned off every setting under Siri in the Settings app). I will continue to monitor.

@sparksd - what OS were you using when you made the change and what OS are you using now? I am curious of an update to the OS has helped you as in my situation, the drain was present under 13.7 and is present under 14.0.

It was under a version of 13 - don't recall which. No OS update helped, just the Siri change. And just turning it off didn't do, had to do the disabling under each app. Really strange.
 
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rytrunkie

macrumors newbie
Original poster
Feb 9, 2008
9
0
It was under a version of 13 - don't recall which. No OS update helped, just the Siri change. And just turning it off didn't do, had to do the disabling under each app. Really strange.
Interesting.

I have made the change as you suggested and will continue to monitor the drain. I used the iPad to post my responses to you replies, make the change with Siri and my battery has gone down by 8%. Incredible.

Do you happen to know what you battery cycle count is and remaining capacity?
 
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sparksd

macrumors 68040
Jun 7, 2015
3,917
2,599
Seattle WA
Interesting.

I have made the change as you suggested and will continue to monitor the drain. I used the iPad to post my responses to you replies, make the change with Siri and my battery has gone down by 8%. Incredible.

Do you happen to know what you battery cycle count is and remaining capacity?

247 cycles & 91.3%.
 
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MDinTV

macrumors newbie
Oct 5, 2020
2
0
Similar problems here. Thanks for looking into it so extensively! How do I easily read battery health?
 
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Markgnyc2

macrumors 6502
Nov 17, 2013
254
290
I have the same issues. I noticed that even though I have the Smart Keyboard cover attached when in standby, the battery is showing the home and lock screen is using battery power. Very strange. Also the battery drains excessively when in use. Was actually thinking of replacing it with the new base iPad, since I never used many of the pro features anyway. And then I can still use my current pencil and keyboard.
 
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Christopher Kim

macrumors regular
Nov 18, 2016
188
134
Unfortunately don't have experience with this (never had that problem with my 10.5 iPP, or my current 2018 11" iPP). But just throwing out an easy troubleshooting suggestion - maybe it's some battery calibration error? (And the battery isn't actually draining that amount of %).

Maybe try letting the battery drain fully down to 0% and actually shut-off on its own, then charge back up to 100% uninterrupted, and see if that changes? Probably a long shot, but seems like something easy to try when nothing else working?
 
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beBeker

macrumors newbie
Oct 31, 2020
1
0
I have the same issues. I noticed that even though I have the Smart Keyboard cover attached when in standby, the battery is showing the home and lock screen is using battery power. Very strange. Also the battery drains excessively when in use. Was actually thinking of replacing it with the new base iPad, since I never used many of the pro features anyway. And then I can still use my current pencil and keyboard
I have the same issues. I noticed that even though I have the Smart Keyboard cover attached when in standby, the battery is showing the home and lock screen is using battery power. Very strange. Also the battery drains excessively when in use. Was actually thinking of replacing it with the new base iPad, since I never used many of the pro features anyway. And then I can still use my current pencil and keyboard.
Exact same problem happened to my iPad Pro 10.5, since I upgraded to one of the latest iPadOs 13 version and I think is getting worse with iPadOs 14 versions. I also noticed that the home and lock screen is using battery power and noticed that when stand by or locked, the iPad reboot itself every minute or so, explaining why the home and lock screen is using almost all the power. As many in this forum, I also performed: hard reset, erase all my apps, DFU reset from my mac iTunes and setting as a new iPad and the problem still persists. I’m thinking in trading this 2017 machine for the new 2020 iPad air, until the new Pros will come next year to see if the cost worth the change
 
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