Related
Seems this is back again with ICS.
Anyone else having problems as well?
I hate to say it, but it seems so, at least based on my first measurements. Back last year, during the earlier round, I took quite a few measurements before and after having the dock updated. When it was over, I saw aggregate battery drain of the tablet and dock in idle as nominally around 0.2-0.3% per hour. A couple of nights ago, with ICS, I measured about 10 times that amount, approximately 2% per hour.
To be fair, I'm in the middle of dealing with the instability and reboot problem on ICS, and I'm hoping resolution of that problem will eliminate the new, apparent battery drain increase. My one night measurement didn't include a spontaneous reboot, but that night it showed about half time deep sleep, and some level of activity the rest of the night.
With me last night my tablet had about 10% battery and the dock had 85% battery.
Leave the tablet docked overnight (with Airplane mode and wifi policy set to never for keeping wifi on during sleep).
Check this morning and the tablet battery is reading 69% and the dock battery is down to 3%.....
I also have the MoblieDock power saving enabled.
Sometimes i leave my tablet with dock at home when i go to school and when I'm back the tablet is powered off and it won't turn on unless i plug in the charger. The battery completely drains out to 0% even though it was charged about 40-50% when left
Sent from my Transformer TF101 using Tapatalk
browngeek said:
With me last night my tablet had about 10% battery and the dock had 85% battery.
Leave the tablet docked overnight (with Airplane mode and wifi policy set to never for keeping wifi on during sleep).
Check this morning and the tablet battery is reading 69% and the dock battery is down to 3%.....
I also have the MoblieDock power saving enabled.
Click to expand...
Click to collapse
I'm not sure if you are pleased or concerned about your readings, but they look pretty good to me. I assume that you had been running the tablet separate from the dock earlier, so that it was able to run down to 10%, while the dock still had 85%. That condition should never have occurred if the tablet and dock were being used together.
As I see it, the tablet battery contains approximately 60% of the combined capacity, and the dock about 40%, so I would factor any change in the tablet battery by 0.6 and by 0.4 for the dock. The tab battery went from 10% to 69% overnight (drawing charge from the dock battery), for a net increase of 59%, or +35.4% of total capacity. The dock battery discharged from 85% to 3% for a net decrease of 82%, or -32.8% of overall capacity, so that combining the two (35.4%-32.8%) the overall battery somehow increased its charge by 2.6%, which is highly unlikely, but you are using approximations, so maybe the actual numbers were a few percent off, one way or another, and there most likely was a very small loss in battery power overnight.
Does that jibe with your conclusion, or did you interpret the results differently?
Sent from my Transformer TF101 using Tapatalk
I left my TF & dock overnnight in Airplane mode, and my battery depletion was about 0.2% per hour, back down to the pre-ICS level I had observed before. eboot Logger did show that I experienced a spontaneous, successful reboot in the middle of the night, so apparently having the radios disabled is no guarantee of protection from the reboot problem, but at least the battery loss was acceptable. I went ahead and set the Wi-Fi advanced setting to disable when screen is off, except when on charger, to see it that will keep the idle battery discharge in check.
I consider any of these actions as temporary workarounds, until ASUS fixes the underlying problems. We should not have to be gerrymandering our systems by trial and error to protect ourselves from dead batteries on idle systems.
Sent from my Transformer TF101 using Tapatalk
vicw said:
I'm not sure if you are pleased or concerned about your readings, but they look pretty good to me. I assume that you had been running the tablet separate from the dock earlier, so that it was able to run down to 10%, while the dock still had 85%. That condition should never have occurred if the tablet and dock were being used together.
As I see it, the tablet battery contains approximately 60% of the combined capacity, and the dock about 40%, so I would factor any change in the tablet battery by 0.6 and by 0.4 for the dock. The tab battery went from 10% to 69% overnight (drawing charge from the dock battery), for a net increase of 59%, or +35.4% of total capacity. The dock battery discharged from 85% to 3% for a net decrease of 82%, or -32.8% of overall capacity, so that combining the two (35.4%-32.8%) the overall battery somehow increased its charge by 2.6%, which is highly unlikely, but you are using approximations, so maybe the actual numbers were a few percent off, one way or another, and there most likely was a very small loss in battery power overnight.
Does that jibe with your conclusion, or did you interpret the results differently?
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse
But I thought the whole idea of leaving the TF-101 on standby with the dock in is that the dock doesn't not draw battery charge to the tablet, its only supposed to do that when you are actually using the tablet (with it docked)? Please correct me if I am wrong.
I've even had my dock completely drain in 2 hours while the tablet is supposedly sleeping. Maybe that was a fluke though, the drain seems to be in line wit Honeycomb most of the time...
Sent from my Transformer TF101 using Tapatalk
According to some review, infinity should give 9.5 hours of play time with WIFI on. Different use results in different result for sure, but I feel like my battery life is less than that of Galaxy 10.1 and if I remember Xoom. Not matching up with iPad is understandable as no android tablet does as iPad does no multi-tasking and wifi turns off quickly after sleep. But worse than Xoom or 10.1 seems something potentially wrong with my unit.
Is there any official application that can test battery condition? In Mac, there is application called coconut battery which tells you how much of battery you can charge i.e. no battery is usually 100% of its maximal capacity and over time it loses capacity gradually but this application tells that. I wonder if there is similar for Android tablet.
By the way my usage is like reading book and comics, surfing net, not much of game. I'm in balance mode. I checked turn off WIFI while in sleep. I did 1GB+ file transfer over the WIFI. With this overall screen time of 5 hours and I only have 15% battery left. I probably won't make it to 6 hours..
Ehhh... as far as I can tell, the Prime (and consequently, the Infinity) should outrun any iPad as to battery life. What's your scree brightness?
I get like 6-7 browsing, 9-10 reading pdfs and much less gaming (balanced mode, brightness 30%). You can see some averages and estimates in the Battery HD app / widget.
---------- Post added at 01:23 AM ---------- Previous post was at 01:22 AM ----------
MartyHulskemper said:
Ehhh... as far as I can tell, the Prime (and consequently, the Infinity) should outrun any iPad as to battery life. What's your scree brightness?
Click to expand...
Click to collapse
Outrun iPad?? Maybe with the dock. Sorry...
Outrun iPad?? Maybe with the dock. Sorry...[/QUOTE]
On the crApple forums, loads of people report a consistent 7 hours of use for the iPad3 (or the new iPad, or whatever the thing is called). The TF700 should eat it alive with the dock attached, whereas they'd come out about equal when going face to face 'barehanded'.
EDIT: nice test: http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html of the OLD iPad2 vs. Transformer 101. Yes, agreed, it is old, but the iPad3 has double the power consumption and only 70% more battery capacity. You go figure.
MartyHulskemper said:
Outrun iPad?? Maybe with the dock. Sorry...
Click to expand...
Click to collapse
On the crApple forums, loads of people report a consistent 7 hours of use for the iPad3 (or the new iPad, or whatever the thing is called). The TF700 should eat it alive with the dock attached, whereas they'd come out about equal when going face to face 'barehanded'.
EDIT: nice test: http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html of the OLD iPad2 vs. Transformer 101. Yes, agreed, it is old, but the iPad3 has double the power consumption and only 70% more battery capacity. You go figure. [/QUOTE]
I agree with the table as I owned Xoom, Galaxy 10.1, and currently have iPad 2 and Infinity. I don't know about New Ipad. But in my experience iPad 2 always give solid 10 hours or so but again that's probably not fair comparison against Infinity which uses HD screen. So I was going off of http://www.engadget.com/2012/06/25/asus-transformer-pad-infinity-tf700-review/, which shows Infinity having superior battery than the most of newer versions of Xoom 2, Galaxy 2 10.1 etc. I have no doubt with Docking station, Infinity's battery life would be unbeatable except by transformer prime.
But my concern was actually if my unit battery is semi-defective and not charging to full way.
I usually have my screen brightness turned all way down; whereas, above test is 50%... so I was surprised my result. Unless 1GB transfer consumed so much or overnight standby consumed a lot (despite turned off WIFI box checked..). Since we cannot really go off by battery screen on ICS with inifinity, which shows WIFI more than screen... I just have no good way to assess the condition of my battery...
HoushaSen said:
I agree with the table as I owned Xoom, Galaxy 10.1, and currently have iPad 2 and Infinity. I don't know about New Ipad. But in my experience iPad 2 always give solid 10 hours or so but again that's probably not fair comparison against Infinity which uses HD screen. So I was going off of http://www.engadget.com/2012/06/25/asus-transformer-pad-infinity-tf700-review/, which shows Infinity having superior battery than the most of newer versions of Xoom 2, Galaxy 2 10.1 etc. I have no doubt with Docking station, Infinity's battery life would be unbeatable except by transformer prime.
But my concern was actually if my unit battery is semi-defective and not charging to full way.
I usually have my screen brightness turned all way down; whereas, above test is 50%... so I was surprised my result. Unless 1GB transfer consumed so much or overnight standby consumed a lot (despite turned off WIFI box checked..). Since we cannot really go off by battery screen on ICS with inifinity, which shows WIFI more than screen... I just have no good way to assess the condition of my battery...
Click to expand...
Click to collapse
Are you sure that you Infinity is going into deep sleep? There are many cases where a "rogue" app will cause the tablet to never enter deep sleep, thereby draining the battery much faster in standby. You can check for deep sleep with CPU Spy...
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
I still need to do a scientific test but today at work my screen was on for 3.5 hours and the tablet was off the charger for 11.5 hours. My battery was down to 32%. My screen brightness is IPS off and fixed at around 90%. Looks lovely
I ran my xoom for 2 hours even and 2 hours off charger. During this time however I downloaded a bunch of apps, loaded up all the apps, ran weather bug looking at weather maps, and did some browsing. I was using it continuously to get the feel compared to my infinity.
Anyway after all that the xoom was around 77% batter remaining.
I know that when I tested my xoom soon after I got it I could get around 6.5 hours on the screen before it ran down. On standby it barely uses anything. I'm guessing I use it at work around 3-4 hours. Sometimes I'd forget to charge my xoom and the next day it would usually get me though most of the day... To maybe 1-2pm and I come in at 6:30 so thats almost my whole day.
So yes the battery is definitely less. Tomorrow I'm putting the screen brightness on auto. Thats how had the xoom so maybe it will be a better comparison. Certainly looking at battery usage the screen was using a lot of power. What looks REALLY odd however is that wifi is my number one battery usage.
That just doesn't look right does it? Now I do have it on wifi all day so in this case for 11.5 hours. But I don't on my phone wifi is like 3%... Maybe my tablet and problems are related to an issue with wifi?
Anyone else keep their wifi on notice a big power drain on wifi?
check to see if you have a battery leak with some app. turn gps off, dont use auto brightness lol. keep it down more like 65 % indoors you dont need more than that. use the app called juice defender and make sure you kill off anything your not using. google a list of top 10 thigns to do to android to make battery last longer
ethion said:
Maybe my tablet and problems are related to an issue with wifi?
Anyone else keep their wifi on notice a big power drain on wifi?
Click to expand...
Click to collapse
Yes - I do. My TF700, no dock, seemingly handles just about 4 - 5 hours of activity (not stand by but actual use, be it video, audio, browsing, etc), and when I look at the battery stats under settings - it shows that over 80% went into wi-fi.
I have heard that to make up for the weak Prime's reception ASUS overpowered Infinity wi-fi, so it sucks power out of the battery pretty fast.
I am also assuming that as usual, based on latest update, serial number, QA, etc, the behavior will be different for different tablets, some will see it and some will not.
Good news is that these things are fixable by a soft patch, so we shall see something released by ASUS if many people complain.
So I still have to do more testing, but I guess my tablet is not defective (at least in regards to the battery). i do get pretty much the same result as others replied me back here. After checking the ASUS main site, 14 hours with Dock was measured in Power Saving mode, 720p movie, WIFI on.
So key here was indeed power saving mode, which I was not using. i just switched to Power Saving mode and just looking at 10% drop mark, it seems to go ~50 minutes, which equates similar to what 9.5 hours one site suggested. Application (as far as what I use) runs fine and seems as smooth BUT main thing noticed here is refresh rate of the screen in power save mode seems much lower so when I go back to main screen, i can see some flickering.
But it's great to be able to boost battery life by couple hours and more.
With the device off - - after a full charge, my battery says 97 percent....NEVER 100%. With the charger plugged in, while using the device, I get a max 98 percent charge. Anyone having a similar experience? Does the device actually use 2% of
the battery when turning it on? I'm befuddled.
xRevilatioNx said:
With the device off - - after a full charge, my battery says 97 percent....NEVER 100%. With the charger plugged in, while using the device, I get a max 98 percent charge. Anyone having a similar experience? Does the device actually use 2% of
the battery when turning it on? I'm befuddled.
Click to expand...
Click to collapse
Do you usually drain the battery all way down after each use or close to it?
Got my tab yesterday. After charging I did some I would say normal usage, browsing, installing some apps, transfering data, watching video and a cam chat for about 2 hours on skype, standby over night.
I used balanced mode, auto brightness, external speaker on highest volume, sometimes superips (but not for long), always had the external sdcard mounted, always wifi on, gps on, autorotate on.
I had >14h without the dock, should have made a screenshot.
I will do a drain test when I charged the battery 4 or 5 times.
---------- Post added at 01:48 PM ---------- Previous post was at 01:46 PM ----------
xRevilatioNx said:
With the device off - - after a full charge, my battery says 97 percent....NEVER 100%. With the charger plugged in, while using the device, I get a max 98 percent charge. Anyone having a similar experience? Does the device actually use 2% of
the battery when turning it on? I'm befuddled.
Click to expand...
Click to collapse
Also when the device is charged up to 80% disable everything, wifi, gps and so on.
Then suspend the device and do not turn it on for at least 1 hour.
I do it that way and get 100%.
HoushaSen said:
Do you usually drain the battery all way down after each use or close to it?
Click to expand...
Click to collapse
Got my replacement yesterday. That was my first full charge. I allowed it to charge to 75% then turned it on (while still charging) and set it all up. I had the charger plugged in for 10 hours while playing around with it. Went to bed, turned it off and let it charge for another 4 hours. When I turned it off . I noticed it was only at a 97% charge.
I'm using it now to let it drain to zero. Then will do another full charge. I've only had it on for 90 minutes on balanced setting and the battery is already showing a 40% drain.
For those worried about the battery only being charged to 97-98%: it's normal, and a way to conserve your battery. Li-ion batteries don't like going to 100% full charge since it increases the temperature a lot and in the long term reduces their capacity. So the battery gets (very shortly) charged to 100% (or very close to it), then it will decrease slightly to high 90s and the charger will go into maintenance charging, keeping it close to 100% charge.
Some manufacturers "masquerade" this by setting the percentage to show 100% even if it really isn't. Keeps users from losing sleep over trivial things like that
The batteries don't like deep discharges either, so there's no use emptying them completely. Top them off whenever you can. Anywhere in between 40% and 80% is good.
TL;DR: Don't worry, the battery is fully charged even though it says 97 or 98%. Don't empty the battery completely.
Edit: Some useful information regarding Li-ion batteries here, http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries/
Thanks for this, but there was some discussion with these studies already. But probably it's right not to do anything extreme.
That being said, we probably have to admit that there is a reason to DISCHARGE and CHARGE FULLY a few times - so that all the apps/widgets that measure battery capacity, estimate life etc. could learn all they can by more (and more exact) data.
Einride said:
For those worried about the battery only being charged to 97-98%: it's normal, and a way to conserve your battery. Li-ion batteries don't like going to 100% full charge since it increases the temperature a lot and in the long term reduces their capacity. So the battery gets (very shortly) charged to 100% (or very close to it), then it will decrease slightly to high 90s and the charger will go into maintenance charging, keeping it close to 100% charge.
Some manufacturers "masquerade" this by setting the percentage to show 100% even if it really isn't. Keeps users from losing sleep over trivial things like that
The batteries don't like deep discharges either, so there's no use emptying them completely. Top them off whenever you can. Anywhere in between 40% and 80% is good.
TL;DR: Don't worry, the battery is fully charged even though it says 97 or 98%. Don't empty the battery completely.
Edit: Some useful information regarding Li-ion batteries here, http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries/
Click to expand...
Click to collapse
Thanks for the info! Good to know that you don't have have to do a complete battery drain, initially. Or ever for that matter.. :good:
Anyone else seem to have dock to tablet charging change in behavior after the V9.4.5.26 firmware update?
Before the current firmware I recall the dock topping off my tablet battery after the Infinity was left idle for a while. Now it seems the dock at best is only slowing the tablet's battery drain. If I reboot the tablet the dock seems to make more progress towards charging the tablet battery closer to full.
I don't quite know if I'm misremembering the old behavior, or this was a firmware change, or I should be concerned about a faulty dock to tablet connection.
sandymacjr said:
Anyone else seem to have dock to tablet charging change in behavior after the V9.4.5.26 firmware update?
Before the current firmware I recall the dock topping off my tablet battery after the Infinity was left idle for a while. Now it seems the dock at best is only slowing the tablet's battery drain. If I reboot the tablet the dock seems to make more progress towards charging the tablet battery closer to full.
I don't quite know if I'm misremembering the old behavior, or this was a firmware change, or I should be concerned about a faulty dock to tablet connection.
Click to expand...
Click to collapse
Mine beheaves just like yours, but I'm still on .22
When the tablet's battery is empty and I plug in the Dock it loads the tablet
but when I put the tablet with the dock together when both of them are about 70 % then the dock isn't loading the tablet
---------- Post added at 05:07 PM ---------- Previous post was at 04:17 PM ----------
I just found out that the dock has started to charge the tablet when the tablet's battery was going under about 60%
Same behavior here
no reason dock should have charge if tablet isn't full. charge in dock is pointless.
My unreliable understanding is a 0% empty or 100% full lithium battery will have a shorter usable life span than a lithium battery maintained around 75%. I can understand that trade off for the dock battery if that is what is happening.
gottahavit said:
no reason dock should have charge if tablet isn't full. charge in dock is pointless.
Click to expand...
Click to collapse
Last night I noticed that the tablet says "charging" while in the dock, and the dock depletes. It seemed pretty slow and the dock seemed to drain reasonably quickly. From what I've read, its supposed to drain both at a slower rate.
Personally, I like the idea to have the dock charge the tablet. It just makes more sense.
Mine was still not charging the tablet at 76%, now I docked it under 66% and it's charging, so I believe it goes on somewhere around 70. I think it was somewhat sooner under .21 and .22, but after installing SwiftKey (crypto-ad) I'm rarely using the dock when not using the shell (but hey, I'm on holiday!).
Edit: Stopped charging at 90% (the dock is 60% now, so ~25:40 ratio, btw), seems reasonable.
sandymacjr said:
My unreliable understanding is a 0% empty or 100% full lithium battery will have a shorter usable life span than a lithium battery maintained around 75%. I can understand that trade off for the dock battery if that is what is happening.
Click to expand...
Click to collapse
Then no charger should ever charge past 75 %. Now if you want to argue not depleting the dock past 10% i would buy it.
sandymacjr said:
My unreliable understanding is a 0% empty or 100% full lithium battery will have a shorter usable life span than a lithium battery maintained around 75%. I can understand that trade off for the dock battery if that is what is happening.
Click to expand...
Click to collapse
It does make sense, switching charging off and letting the battery drain partly allows the battery in the tablet to have a longer life span. It usually let's it drop 20% or so and then charges it for a certain amount. If you keep charging from 90% to 100% over and over, it depletes the life span of the tablet's battery.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
KilerG said:
It does make sense, switching charging off and letting the battery drain partly allows the battery in the tablet to have a longer life span. It usually let's it drop 20% or so and then charges it for a certain amount. If you keep charging from 90% to 100% over and over, it depletes the life span of the tablet's battery.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Click to expand...
Click to collapse
With Lithium Ion though, that shouldn't be an issue from what I understand. NiCad's, and to a MUCH lesser degre NiMh's will get that memory effect, but Li-ion's are immune to it, in fact they do better when kept charged up.
californiarailroader said:
With Lithium Ion though, that shouldn't be an issue from what I understand. NiCad's, and to a MUCH lesser degre NiMh's will get that memory effect, but Li-ion's are immune to it, in fact they do better when kept charged up.
Click to expand...
Click to collapse
That is true, Li-Ions are much better off staying between 40 to 80% and don't have the dreaded memory effect of NiCd and NiMH. However, when you get close to 100% when charging the voltage is also very high, which can shorten the lifetime of the battery in the long run. That's also what KilerG is saying.
It's better for the battery to just let it discharge a bit, then charge it up again. Maintenance charging it at 100% will require a lot of juice from the dock when the tablet is in use. The charge efficiency is greatly lowered when above ~80% since you need to continue increasing the voltage, but decrease the current to avoid overheating and damaging it.
My dock is currently at 78% battery while the tablet is at 77%. It's been on battery power for about 2,5 days now, I've only used it for a short time lately as I've been busy with other things.
Last time I took it off AC and it was more actively used, the dock depleted more quickly while the tablet was being topped off by the dock every now and then. Gives the tablet a lot longer usage, although you could end up with an empty dock while the tablet is still running. That's fine with me, the dock isn't much use without the tablet.
Edit: Actually, the battery indicator wasn't updating it seems. I undocked and docked again and the numbers went from 78% and 77% (dock and tablet) to 63% and 85%. Not sure why the battery status isn't updating properly. Might just be a one-time thing.
From the Asus forum:
http://www.transformerforums.com/fo...attery-related-matters-transformer-range.html
Excerpt:
TF201/TF300/TF700
* The charger charges the docked combo all together.
* When fully charged, the tablet uses the charge first, then the dock charges the tablet. The idea being that the dock battery will be depleted while maintaining the tablet battery. See below...
The way the combo works is that the dock does not charge the tablet continuously. I believe the percentages are along the following lines..
Dock 100%
Tablet 100%
Tablet uses charge until the level is around 70%. At this point the dock will recharge the tablet back up to around 90%, if the tablet is not being used.
If the tablet is being used, then the dock "powers" the tablet, balancing the charge rate with a direct bias to ensure that the dock will eventually drop to 3-5% with the tablet at around 90%.
The dock shouldn't allow itself to become any more discharged than 3-5% & neither should the tablet. Android will warn you when the tablet drops to 14%.
The dock will still continue to function until the tablet shuts off.
----------------------------
However, this is not my experience, which is why I was researching it in the first place. Dock charging behavior is inconsistent. I started seeing that the dock was no longer fully charging the pad w/o a cold boot recently (I'm still on ICS, rooted). Then it would develop the problem again after a short time, even when plugged into AC. Right now I'm plugged into AC. At start my dock had no charge and the tablet had about 60%. The AC charged the dock and the dock passed charge to the tablet until the tablet had 100% charge - correct behavior, I believe, since this is what it did when brand new (it's still quite new). Many have posted about the dock not charging the pad over time. I think there's a hardware issue of some kind, or system software problem since it temporarily will correct after a cold reboot. Or maybe there's a software conflict. I've been uninstalling stuff to free memory.
Einride said:
Edit: Actually, the battery indicator wasn't updating it seems. I undocked and docked again and the numbers went from 78% and 77% (dock and tablet) to 63% and 85%. Not sure why the battery status isn't updating properly. Might just be a one-time thing.
Click to expand...
Click to collapse
I'm having this problem, too. After charging both batteries to 100%, I unplugged from AC, and I've been using the pad for a couple of hours. The battery indicators still say 100%. I think this may be a hardware problem (or an API problem) because Dual Battery Widget reports the same. Undocking and redocking did not help. I suspect only a cold reboot will help. Perhaps my prior problem was a battery indicator problem, and not a charging problem, as it seemed.
Hi Guys,
I remember reading a post about this before but can't bloody well find it
With my tablet docked, they keyboard battery is draining much faster than my tablet resulting in a useless dock fairly quickly i.e. 0% in dock vs 80% in tablet. This seems quite a gap - I'm running stock, not rooted. Is there anything I can do to improve this? I don't remember the charge gap being so vast in my first TF700.
Any advice/suggestions are most welcome.
Thanks.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Been discussed before. Dock still operates at 0%, no need to keep a charge in there. It acts as the sacrificial battery, making the tablet use that power first, so if you so choose, you can continue using the tablet w/o dock or with dock and get the maximum battery life both ways.
Thanks Nick, I thought I noticed my keyboard wasn't working before when at 0% but will give it another whirl tonight. If it does work then bravo on Asus
i recently bought the dock and i also find the battery drain rather strange. i always turn off wifi over night and the battery of the tablet usually stays exactly the same, e.g. if i fully load the tablet before going to bed, i have like 99% in the morning without any drain.
yesterday i went to bed with dock 80% and tablet 85% and wifi off. today i find the dock left with only 40% and the tablet with 82%? is this normal? i guess i have to take them apart all the time over night otherwise it just drains too much
Definitely is not normal - I leave mine docked overnight with wifi *on* and I only get a percentage or two drain...
To start with, 'd look (with CPU Spy) to make sure you tablet is deep-sleeping properly.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
That's odd. Maybe some process kept running overnight.
Check that the following are set:
- GPS to OFF
- IPS+ OFF (set it to IPS mode. + drains 10% or some overnight, even when off.)
- Mode to Power Saving!
- Shut down all active processes (taskmanager has this convenient one click clean.)
- Check that media players have shut down properly in the Settings/Apps/Running apps menu. Also make sure they're not still cached (VLC tends to do that...)
I think that this is normal behavior. I notice that after using the device for a while, when I shut it off the dock battery actually charges the tablet battery. The charge light on the tablet even indicates that this is the case. I believe that is by design.
Dub Tech said:
Hi Guys,
I remember reading a post about this before but can't bloody well find it
With my tablet docked, they keyboard battery is draining much faster than my tablet resulting in a useless dock fairly quickly i.e. 0% in dock vs 80% in tablet. This seems quite a gap - I'm running stock, not rooted. Is there anything I can do to improve this? I don't remember the charge gap being so vast in my first TF700.
Any advice/suggestions are most welcome.
Thanks.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Click to expand...
Click to collapse
The charge light is indicating the tablet is (primarily) running off the dock battery. EDIT: although this is in essence a correct statement, I have paid more attention to it and noticed the dock does indeed charge the tablet (when not in use) -- it's a few percents, but nonetheless, it charges. Mea culpa..
The capacity of the tablet and dock batteries is different, so discharging under load will differ as well. I guess the behavior you are seeing is by design, and, to some extent preferable to the situation I have had since the beginning: my tablet depletes faster than the dock, at least initially, and that was what most of the early adopters were seeing, as well. This of course led to some discussion.
The behavior we noticed seemed somewhat counterintuitive, since it meant we would have less battery capacity on the tablet if we would choose to undock it -- as opposed to your situation, where you have as much battery capacity left on the tablet as possible when you choose to 'travel light'. I'd prefer it that way. ; )
So, the dock depleting significantly faster is nothing unusual nor anything to worry about. I do have to concede, though, that my battery drain is far less than some in here report -- it has been going for three and a half days with moderate use now. (That's OK, I guess, given the fact that I currently am in nightshifts and do not have to time to tinker as much. Even when I *am* tinkering, though, the batteries routinely carry me over two days, easily.)
My dock and tablet have weird battery usage.
So my problem is really weird I think, but maybe you guys can confirm or offer any fixes. I have tried charging the tablet and dock assembled through the dock port and gotten both batteries to 100%, but then while docked, the tablet's battery drains faster and the dock;s remains at 100%. As the tablet's battery gets to around 70%, the dock's will start to deplete but very slowly. The dock will only go to 70%, and the tablet will drain completely to 1% and then shut off even though the dock still has 70%. I then undocked the tablet and just charged the tablet back to 100% without doing any charging to the dock. After docking the tablet, it shows the tablet at 100% and then the dock at 70%. This time the tablet drains to 1% and then shuts off with the dock still at 50%. What's going on here or is it normal or is there a setting that I'm missing? I thought the dock was supposed to extend the tablet's battery life time??
I use the dock (keyboard) always so I'm not happy that the tabled drains the keyboard.
When the tablet gets around 85% battery it's going to drain the battery from the keyboard till it is out of battery.
Is it possible to let the tablet drain the dock if it is around 25%
I have this problem since the first day (stock rom) I went to custom rom's in the hope that it was a bug of Asus.
Maybe some can help me to fix this. It is annoying that I have to use power after 1.5 hours of use
Thanks,
The keyboard works with emty battery.
my keyboard battery is dead right now andit still works perfect mate
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
thanks, i will check this
never tried it before always charged it after it is empty
gr,