Apple Pencil 2 draining iPad Pro battery

Has anyone else found that leaving their Apple Pencil 2 attached to their iPad Pro 11 overnight drains the battery anywhere from 15%-25%. I did a test of leaving the pencil attached over night and saw a 17% loss in the iPad battery. The pencil was fully charged when I left it connected overnight. So it really had nothing to charge on the pencil. Then I charged the iPad to 100% and left overnight without the pencil attached and the next morning the iPad battery was still at 100%.


Seems like the Apple Pencil 2 is constantly drawing power from the iPad Battery. Was just wondering if anyone else is seeing this behavior. Would like to keep the pencil attached so I know where it is but not if it keeps draining the battery.

iPad Pro 11-inch, Cellular, iOS 12.1

Posted on Nov 21, 2018 5:33 AM

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Posted on Dec 29, 2018 5:38 PM

I have exactly the same problem.


After several experiments, I found that the iPad's battery won't be drained if I don't attach Apple Pencil 2 on my iPad pro (11 inch).

It is a clear proof that Apple Pencil keeps stealing battery from iPad.


And for your information, there is some energy loss when we talk about wireless charging, it is the cons of wireless charging tech itself, Apple product is no exception. That being said, when your iPad charges your Pencil, there is gonna be some percentage of battery lost during the process without going directly to the Pencil. Adding everything together, it is not hard to imagine the battery will drop so fast.


Short term solution would be finding a good dock or case for your Pencil, put it separately with your iPad. It worked for me.


Long term solution, I guess it is more of an Apple job, is simply not to charge Apple Pencil as long as the battery is not lower than a threshold, which could be exposed to the user. After separating my Pencil for a while, two or three days, I still have 92% battery in it. That said if iPad Pro doesn't automatically charges Apple Pencil before its battery goes lower than 80%, it could very likely save the day.

Of course, it is up to them to solve the problem.


To me, this gen iPad is good, but not perfect, it has a lot of flaws, this is just one of them you will have to bear with to enjoy your fullscreen experience, :)

86 replies

Feb 20, 2019 2:02 PM in response to deanocko

I think people are kind of missing the point here. The iPad Pro has a nearly 37 Wh battery. The Pencil on the other hand has a 0.4 Wh battery.


We know that when disconnected from the iPad Pro, the Pencil battery drops by maybe 5-10% per day. Therefore, if attached to the iPad, why do we see such huge drops in iPad battery life, considering the standby power consumption of the pencil when detached from the iPad is so low?


In my case, the iPad battery drops 10% in 12h with the Pencil attached. This equates to 3-4 Wh of power. The equivalent of 10 full discharge-recharge cycles of the Pencil battery.


Clearly, there is something going badly wrong here. Moreover, if the Pencil really is drawing the equivalent of 10 cycles in a 12h period, this must be crucifying the battery and massively shortening its life.


As for the weird drops to 70% and lower, I too have had this happen, and I believe it is a special mode designed to protect the battery from overcharging when it has spent a lot of time up at ~100%. It’s almost like a hibernation mode for a pencil that hasn’t been used in a while. When my pencil goes into this mode, I do not get iPad battery drain. Perhaps they could make this mode initiate sooner. Either way though, the amount the pencil is drawing when attached is so high that it simply must be a bug or a flaw. The pencil should be drawing only the same amount it would need to compensate for what it loses when deattached from the iPad, which is about 5-10% per 24h period.


I too have submitted a bug report. I just hope they take note.

Apr 10, 2019 11:30 AM in response to juddza

I literally cannot believe Apple.


On 12.1.4 they pushed the x60 firmware update to the Pencil. This totally fixed the problem.

Upon updating to 12.2, the firmware is still x60. But now the insidious ~10% per 24h drain has returned.


Can anyone else confirm what kind of standby drain they get per 24h? I am pretty much solidly on 10% now.


On 12.1.4 with the new Pencil firmware this drain was only 3-5% per 24h.


Get it together Apple!

Apr 10, 2019 3:02 PM in response to xenzo

Background tasks will always account for some battery usage whilst the iPad is idle - and the background activity will be heavily influenced by your individual setup of Apps, notifications, email configuration (such number of accounts, push/fetch intervals) etc. An attached Apple Pencil will also increase consumption.


On average, 10% battery depletion per day for an idle iPad is likely a reasonable expectation.

Dec 23, 2018 10:53 AM in response to stinky777

I’m noticing that if I have my Apple Pencil 2 attached to my iPad Pro for a while without using it, the Pencil starts discharging a little every day—maybe about 5% per day. For a while the iPad will continue topping it off, but then it stops. The Pencil shows as still attached and connected, just not charging. This will drain my iPad’s battery anywhere from 10-20% every 24 hours or so unless I remember to detach/attach the Pencil now and then to start the charge process over again.


I’m not really sure what to do about it. I’ve had the Pencil replaced thinking it was a faulty Pencil. I’m not going into the store again to get the iPad replaced and then run into the same thing. I feel like this is a software issue, as I’ve only been noticing it since 12.1.2.

Dec 31, 2018 5:27 AM in response to peterfromsarasota

Hello,


I have exactly the same symptoms with the iPad 11 version 12.1.1.


I just had my pencil and my iPad replaced in Apple store (France).


The result is the same, battery loss if the pencil is charging during a standby period of about 10% for 8h standby.


The defect is not recognized by the Apple store (only notes) or Apple care.


Do you think this defect will be corrected?


thank you in advance for your feedback...



[Image Edited by Host to Remove Personal Information]



Jan 30, 2019 9:19 AM in response to peterfromsarasota

I reported as suggested. I proposed a what I feel is a simple fix. Would require the following:


  1. ipad Pro should automatically turn off wireless charging when pencil reaches 100% for a period of time (guessing 30 minutes would be ok).
  2. iPad Pro should turn on wireless charging each time pencil is connected.


with those two it should never end up in charging for more than 30 minutes when not needed.

Feb 17, 2019 8:39 AM in response to oriffet

I understand the iPad’s battery draining, after all it is charging the pencil constantly. But a couple of weeks ago, I started noticing that after getting to 100%,, the pencil starts losing charge slowly. I left it untouched for a few days and it will get all the way down unless I dettach it and attach it again. Took it to the Apple store and they said it was very weird and it shouldn’t do that. They restored the settings and said if it keeps on doing that, I should restore from iTunes. of course it is still doing it, but I don’t see what restoring it from iTunes will do. They ordered a replacement pencil, but I’m wondering if anyone else has had this problem.

Feb 28, 2019 11:58 AM in response to mkmw5516

This is definitely an ongoing issue.

And you are right.

Doesn't make sense for both not to be charged up fully.


Go back a few pages ( page 2, I think ) and look for my Apple iPad feedback link reply post.

In the posting, I have included a link to call/reach Apple directly in Cupertino, California and you can talk with a customer service /technical supoort rep about this issue.


Best of Luck to You!

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Apple Pencil 2 draining iPad Pro battery

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