Does apple pencil 2 drain iPad pro battery while not in use?

appleaday1

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Original poster
Oct 15, 2018
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Hi,
I just got the new 11" iPad pro with apple pencil 2 and the keyboard folio case. I'm loving all of it so far. I was just wondering if I leave the apple pencil attached magnetically to the iPad pro with the case closed, is the pencil constantly using iPad battery? Does the pencil stop charging after its fully charged? Thanks for any information.
 

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bbplayer5

macrumors 68030
Apr 13, 2007
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Pretty sure the pencil goes into standby when it hits 100%. Shouldn't be draining battery once fully charged.
 
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1rottenapple

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Apr 21, 2004
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Pretty sure the pencil goes into standby when it hits 100%. Shouldn't be draining battery once fully charged.
Yes but very little. I don’t keep my on the iPad and I notice anywhere from 97-95% drop over a 24hr period.
[doublepost=1545338675][/doublepost]It maintains a 100% charge but a small little electrical trickle charge. It’s going to be sooooo negligible. It would be like the battery life of a AirPods drawing power. It’s small. The battery on the pencil is TINY. Like extremely smal it’s a wonder of engineering.
 

inghulent73

macrumors member
Jun 8, 2017
31
108
Before returning my iPad, I left the pencil connected to it over night and it drained the ipad battery all the way down to where the ipad turned off. I was under the assumption we could just leave the pencil attached so it would always be charged and we would never lose it. The next night I took the pencil off before going to sleep and the ipad only went down 1%. So I guess even if the pencil is at 100%, it is still constantly trying to charge until you take it off.
 

Aussi3

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Jun 3, 2012
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Before returning my iPad, I left the pencil connected to it over night and it drained the ipad battery all the way down to where the ipad turned off. I was under the assumption we could just leave the pencil attached so it would always be charged and we would never lose it. The next night I took the pencil off before going to sleep and the ipad only went down 1%. So I guess even if the pencil is at 100%, it is still constantly trying to charge until you take it off.
How could the Apple Pencil steal the charge of the iPad battery that badly lol obviously the iPad was low in battery it wouldn’t be possible for the pencil to steal that much even if the pencil wasn’t charged at all lol
 
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gixxerfool

macrumors 65816
Jun 7, 2008
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I left mine on all the time the first week I go it. I noticed siginificant drainage overnight on the iPad, about 30-40%. I started leaving it off and now it’s only about 2-7%. FWIW, I also noticed my pencil would never reach 100% charge either. So i don’t know if there is something there or not.
 

inghulent73

macrumors member
Jun 8, 2017
31
108
How could the Apple Pencil steal the charge of the iPad battery that badly lol obviously the iPad was low in battery it wouldn’t be possible for the pencil to steal that much even if the pencil wasn’t charged at all lol
It was at about 25%, so yeah it was pretty low, but I didn't expect to wake up with the ipad completely dead.
 

akil316

macrumors member
Dec 17, 2013
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I noticed there was a slightly higher battery drain over night with the pencil attached at the center so I usually leave it attached off center until I need to charge it.
 

spiderman0616

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Aug 1, 2010
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I’m noticing some battery drain issues when Apple Pencil is attached in standby. Thought I had a faulty Pencil 2 and had it swapped out for a new one, but the issue remains. It’s looking like an iOS update is needed to address this.
[doublepost=1545654157][/doublepost]
Pretty sure the pencil goes into standby when it hits 100%. Shouldn't be draining battery once fully charged.
Shouldn’t be, but it seems to be doing just that. My Pencil 2 not only doesn’t go into standby after being topped off to 100% but also stays active and actually starts draining. The replacement model I got is acting the same way. Meanwhile the iPad keeps thinking it needs to charge the Pencil, so it keeps sending it power, hence the drain on both devices. I really think there is some software stuff going on here that needs to be addressed. Right now, if I leave the Pencil detached after being charged, neither the iPad nor the Pencil seem to drain battery at all while in standby.
 
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ispcolohost

macrumors newbie
Nov 28, 2017
12
8
Just picked up a pencil 2 yesterday, left it connected overnight, and what would have normally been a morning where my iPad Pro 11" had lost a few percent, with the pencil attached but fully charged, my iPad was down to perhaps 90%. So, it would not surprise me if the pencil consumes 5-10% per day if left connected, since I'm thinking I lost about 4% charge attributed solely to the pencil over perhaps 12 hours.

This issue is actually what resulted in my searching around and finding this thread; I had hoped it would fully charge and then the iPad stops trying, so I was surprised to find the battery drain. Perhaps the inductive charging circuit is physically activated by the magnets, so it's energized regardless of whether it has any work to do.
 

UrbanExtant

macrumors member
Sep 29, 2018
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Next to The Great Marsh
I, too, can confirm that if I leave my Apple Pencil attached to my 12.9' iPad Pro, my battery takes a beating overnight. If I leave the pencil sitting on my desk, unattached to the pad, there is minimal loss to my iPad's battery overnight. My pencil, sitting on my desk, without use for three days, went from 100% charge, to around 85% charge. It seems that the pencil doesn't retain its charge as well as the first version of the pencil, at least in my experience.
 
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spiderman0616

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Aug 1, 2010
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I, too, can confirm that if I leave my Apple Pencil attached to my 12.9' iPad Pro, my battery takes a beating overnight. If I leave the pencil sitting on my desk, unattached to the pad, there is minimal loss to my iPad's battery overnight. My pencil, sitting on my desk, without use for three days, went from 100% charge, to around 85% charge. It seems that the pencil doesn't retain its charge as well as the first version of the pencil, at least in my experience.
In my experience, both the 11" iPad Pro and the Apple Pencil 2 RETAIN their charge just fine once they're charged up. I can charge both up to 100% and then let them sit for days at a time and they barely lose any of their charge at all. It's when I have the Pencil magnetically attached for more than about a day without use that I run into issues. The Apple Pencil starts gradually losing charge and not allowing itself to be topped off, and the iPad Pro is constantly trying to top it off and losing charge. It's a losing battle for the iPad, because for some reason the Pencil doesn't flip over into whatever mode it needs to take the charge. It still shows as connected, but the little lightning bolt charging icon is not there, and it stops allowing itself to accept the charge from the iPad.

For me, simply taking the Pencil off for a few seconds and putting it back on makes it so that the Pencil tops off to 100% and stays there for about a day. But then after that, it starts gradually decreasing again and not taking the charge from the iPad again, while the iPad is trying and trying and trying to top it off. THAT is where the iPad's battery loss is coming from.

I am 100% convinced that this is an Apple Pencil 2 firmware issue, an iOS 12 issue, or a combination of both. It needs to be fixed ASAP. Some have said "Of course this is how it works! The charge dock was not meant to be a storage solution! You should take the Pencil off when it's done charging!" That is BS. The magnetic charge dock is convenient BECAUSE the Pencil is always supposed to be there and ready to go when you need it, unlike the original that had no storage options at all.
 
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UrbanExtant

macrumors member
Sep 29, 2018
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Next to The Great Marsh
In my experience, both the 11" iPad Pro and the Apple Pencil 2 RETAIN their charge just fine once they're charged up. I can charge both up to 100% and then let them sit for days at a time and they barely lose any of their charge at all. It's when I have the Pencil magnetically attached for more than about a day without use that I run into issues. The Apple Pencil starts gradually losing charge and not allowing itself to be topped off, and the iPad Pro is constantly trying to top it off and losing charge. It's a losing battle for the iPad, because for some reason the Pencil doesn't flip over into whatever mode it needs to take the charge. It still shows as connected, but the little lightning bolt charging icon is not there, and it stops allowing itself to accept the charge from the iPad.

For me, simply taking the Pencil off for a few seconds and putting it back on makes it so that the Pencil tops off to 100% and stays there for about a day. But then after that, it starts gradually decreasing again and not taking the charge from the iPad again, while the iPad is trying and trying and trying to top it off. THAT is where the iPad's battery loss is coming from.

I am 100% convinced that this is an Apple Pencil 2 firmware issue, an iOS 12 issue, or a combination of both. It needs to be fixed ASAP. Some have said "Of course this is how it works! The charge dock was not meant to be a storage solution! You should take the Pencil off when it's done charging!" That is BS. The magnetic charge dock is convenient BECAUSE the Pencil is always supposed to be there and ready to go when you need it, unlike the original that had no storage options at all.
I agree this is most likely a software issue. My iPad Pro 12.9” holds a charge just fine. I can get it to 100%, unplug it, and it’ll lose, maybe at most, 1% of its charge as it sits for a few days. My pencil, on the other hand, that loses a fair bit of charge over a few days. I’ve never paid it much mind, but I believe it lost about 15% of its charge over 3-4 days of sitting by itself on my desk. I’ve noticed, by watching Bluetooth connections, that the pencil is motion activated for connections, and sensitive. In my iPad, the pencil will show as not connected, but if I pick it up, it immediately shows as connected on the iPad. So, it’s possible, in my case, bumping the desk, etc. activates my pencil, and it uses some battery power until it hibernates again.

I don’t find either of the above mentioned scenarios concerning. What I do find frustrating is the inability to leave the pencil attached to the iPad, without it crippling my battery storage overnight. To me, part of why Apple designed this new charging method was so one could leave the pencil attached to the pad, so it would be right there, always ready to go, whenever one wanted to use it. Apple even mentions this convenience in their marketing. I do hope this issue is addressed in a not too distant software update.
 
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ispcolohost

macrumors newbie
Nov 28, 2017
12
8
Yep, the issue with leaving it attached is fairly annoying to me too because once someone makes a good keyboard case for the thing (that includes drop protection), I figured the pencil will spend a lot of time connected, simply because that's the most convenient place for it to be.

As far as the pencil itself, I haven't used it today, and have had it disconnected since this morning, and it's lost about 10% doing absolutely nothing. That seems fairly steep for not being used and sitting on a desk for nine hours, but even so, would still make it several days I assume, so not a huge deal.
 

spiderman0616

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Aug 1, 2010
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Yep, the issue with leaving it attached is fairly annoying to me too because once someone makes a good keyboard case for the thing (that includes drop protection), I figured the pencil will spend a lot of time connected, simply because that's the most convenient place for it to be.

As far as the pencil itself, I haven't used it today, and have had it disconnected since this morning, and it's lost about 10% doing absolutely nothing. That seems fairly steep for not being used and sitting on a desk for nine hours, but even so, would still make it several days I assume, so not a huge deal.
My Pencil does lose some charge just sitting there on my desk doing nothing, but I do expect that to an extent. It has a tiny battery, and it probably does wake up here and there during the day due to me bumping the surface its on, or sometimes just picking it up to fidget with it. (I've found both versions fun just to hold for some reason.)

In theory though, this shouldn't be a big deal because the Pencil is supposed to be able to be attached to the iPad at all times being topped off when needed and ONLY when needed--not constantly being charged or constantly sucking un-needed juice from the iPad's battery. I have never had work I'm doing on a project, with either version of Pencil, outlast the Pencil itself. In other words, even when I'm working on a drawing in Procreate for an hour or two, I never come anywhere near depleting the Pencil's battery. So this slight drain in standby isn't what bothers me.

I think if my iPad's battery was draining around 5% a night just from having the Pencil attached, I would figure that to be an acceptable amount considering the benefit. But when I wake up in the morning and it's 10-15% (sometimes more) lower than when I went to bed, that's a problem. The funny thing about all this is that I can see the stretches of time where this is happening by looking at the battery usage stats in Settings--it seems to spend about 3 hours at a time trying to charge the Pencil, then levels off for a few hours (I'm assuming at that point it's given up trying to charge the Pencil), and then at some random time later it drains quickly for another 2 or 3 hours and then levels off again. Rinse wash repeat. And during all this, the Pencil isn't even really charging. It's like it's ignoring what the iPad is trying to do, but still staying active as if it's being used.
 
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spiderman0616

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Aug 1, 2010
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Over the last two iOS updates my issues have been completely solved. Two updates ago the Pencil battery started acting as expected and one update ago the iPad Pro battery stopped draining excessively. I can leave my Pencil attached to the iPad for however long I want now.
 

gixxerfool

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Jun 7, 2008
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Over the last two iOS updates my issues have been completely solved. Two updates ago the Pencil battery started acting as expected and one update ago the iPad Pro battery stopped draining excessively. I can leave my Pencil attached to the iPad for however long I want now.
This is good news. I hope others chime in with their stories. I haven’t had to leave mine on lately to find out. I should try it.
 

aevan

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Feb 5, 2015
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It used to, for me, but one of the latest iOS/firmware updates fixed it and now there is almost no extra drain in standby with the Pencil attached.
 

spiderman0616

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Aug 1, 2010
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It used to, for me, but one of the latest iOS/firmware updates fixed it and now there is almost no extra drain in standby with the Pencil attached.
I think it happened over the last two. My iPad used to drain 15-20% overnight with the Pencil attached, and the Pencil would stop charging at some point and begin actually draining. I’d wake up to it at 85% and no longer being topped off by the iPad.

Two updates ago the iPad itself stopped draining excessively and was back to normal but Pencil was still being weird. Latest update made it so Pencil stays topped off without hammering on the iPad battery all night.

I use my iPad Pro and Pencil daily so I am so happy to see this fixed.