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 28, 2019 4:14 PM in response to mkmw5516

Took iPad Pro off charge Monday morning. Turned Bluetooth off. Left Apple Pencil 2 attached to case.


It is now Thursday night. I have had 3h screen on time. My iPad is at 71% battery.


Turned on Bluetooth to check battery level in Pencil. 90%.


So clearly, in standby mode, the Pencil does not need to draw huge amounts of battery from the iPad. 10% over 4 days is nothing and should not have any perceivable impact on iPad Pro battery life.


There is a bug here that is causing the Pencil to constantly communicate over Bluetooth even when it is docked to the side of the iPad Pro, and this is chewing up a lot of power.

Sep 15, 2019 9:29 AM in response to peterfromsarasota

I understand that it is designed to charge off the iPad battery. However, I highly doubt it is designed to go through 25-30% battery power in just 8 hours. I have left my pencil connected to my 11” pro over night several times and each time my battery is drained. On one instance it drained it from 65% down to 23%. Seems like poor design for it to be so power hungry with no use.

Oct 14, 2019 12:41 AM in response to peterfromsarasota

Hi,

I did not notice the discharge part of the IPad. However, I have been asking myself a similaire qestion. The one about the Pencil 2 battery lifespan. As we know keeping the device on the charger while it’s over 80% decreases the lifespan of the battery over time. I’ve decided to leave the pencil on the table next to the iPad - not clipped to the iPad just in case. I am sure that engineers working on this thought about this aspect however I am not sure what decision have been made regarding this. As earlier the battery quality decreases the higher the chance it will be replaced by the user. I would welcome the option to disable the charging manually.

Dec 29, 2018 6:55 PM in response to CaoJiayin

The amount of drain happening here (in my experience) is far beyond a few percent a night. If it were just 4 or 5 percent due to topping off the Pencil now and then, I’d be totally fine with that. But it’s anywhere from 15 to 20 percent per 12 hours of standby, and that’s just plain unacceptable. There is no way that much juice is needed to keep the Pencil topped off or at least reasonably charged. Apple needs to fix this ASAP. I’m really happy with my new iPad Pro so far, and I’m really happy with the Apple Pencil 2 as well. I’m just not happy with the way this charging solution is working.

Apr 15, 2019 11:34 AM in response to MichelPM

That all sounds great... other than the fact that if I leave my ipad idle for a few days.. say.. over the weekend.. with my pencil attached, the pencil drains to 0%.


So, I have the iPad on but "alseep" in my bag with the Pencil attached as it was meant to be, and the pencil drains power from the ipad while simultaneously loosing battery faster than it would if I just kept it unattached in a pocket somewhere in the bag.


That sounds like a problem to me. Nothing more annoying than grabbing the iPad for a meeting Monday morning just to have the pencil at 0% charge despite the fact that it was attached to the only thing that can charge it.. since Friday afternoon.


Makes no sense at all.

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Apple Pencil 2 draining iPad Pro battery

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