I bought a dock for my TF few days ago and today I drained the battery for the first time. It went to 3% and then started to use tab battery (or I think so) . Then I turned it off leaving the tab docked. After maybe 3 hours I turned it on and dock battery was at 1 %. I immediately undocked my TF and started charging the dock.
Do you think this is the famous dock drain issue? I mean is it normal for the dock battery to drop to 1 %? Isn't it supposed to stop using the battery when it's bellow 3% to prevent it from reaching ZERO and killing it.
Excuse me for the stupid thread.
I have a similar problem where my dock will no longer charge over 0%. The problem appeared out of nowhere, and I have no idea how to fix it. Nobody else seems to have found a definitive fix either. I might have to send it back to Asus
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Hey guys,
I'm reading through the dock threads and I see a lot of issues with the battery, but I didn't see anyone with the same problem as me. Maybe it's not a problem, but I figured I'd put it out there just to make sure.
Sometimes my dock will read at 0% battery, then suddenly spike up to the proper battery percentage. It usually happens after it's asleep, then wakes up. Last night I had charged the dock to 100%, then unplugged and plugged into the tablet a short while later. It was reporting 0% and had a flashing orange light. I then charged it today and it held the charge, but still doing the strange 0% to "real" percent thing.
I have both a B60 dock and B60 tablet and I am using Prime 1.7 ROM.
Has anyone heard of this? Is my dock bad? I can still RMA it as it's brand new.
Thanks!
I did a test last night by fully charging the keyboard then plugging it into my tab at 17% battery. When I woke up, the dock had 3% and the tab had 76%. This seems pretty on par with what I'd expect. I just don't want to charge the tab and have it not hold a charge at all.
How do you even know how much your dock is charged?
I use a couple of the dual battery widgets (still haven't decided on one). I sent my dock in for repair on the drainage issue a couple weeks ago. Since getting it back I have noticed that when I wake the tablet up, it can take a long time (Sometimes up to ~5-10 minutes for the dock battery to show the correct voltage). I had upgraded to 3.2 while the dock was out for repair, so don't know if its something with the new dock hardware, or a 3.2 issue.
The other day had the dock reading 0 and even after an hour of use, never did show it had a charge. Thought I was screwed because I had read several threads that said if you ran the dock down to 0, they couldn't ever get it to charge again. Plugged it in overnight and let it set, fired it up the next morning and both were at 95+%.
mikelt89 said:
How do you even know how much your dock is charged?
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Would also like to know - is there a setting on the transformer that allows me to view the docks battery status?
Thanks
mikelt89 said:
How do you even know how much your dock is charged?
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Click to collapse
321eod said:
Would also like to know - is there a setting on the transformer that allows me to view the docks battery status?
Thanks
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When you click the notification bar, it says "Docking Connected" and then the dock battery percentage to the right. I'm assuming that is the dock battery percentage... I'm not sure if it's part of the rom, but I think I remember it being there when I was stock.
lordgodgeneral said:
I use a couple of the dual battery widgets (still haven't decided on one). I sent my dock in for repair on the drainage issue a couple weeks ago. Since getting it back I have noticed that when I wake the tablet up, it can take a long time (Sometimes up to ~5-10 minutes for the dock battery to show the correct voltage). I had upgraded to 3.2 while the dock was out for repair, so don't know if its something with the new dock hardware, or a 3.2 issue.
The other day had the dock reading 0 and even after an hour of use, never did show it had a charge. Thought I was screwed because I had read several threads that said if you ran the dock down to 0, they couldn't ever get it to charge again. Plugged it in overnight and let it set, fired it up the next morning and both were at 95+%.
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Thanks for chiming in. I'm thinking this might just be a software issue and not a dock issue then. I'll see how things go over the next few weeks.
Hey I was just wondering if its bad for the calibration of the battery to leave the tablet docked in the keyboard all the time?
I dont use the tablet while its charging, i usually always charge it to 100% (while docked), and let the battery drain out completely (while docked) before charging it back up again.
Just don't want to mess up how the battery calibrates or anything (so in the future whenever i use the tablet by itself it won't drain out quickly due to bad calibration)
As long as you charge it to 100% and then disconnect the AC adapter, you won't have problems.
Since the TF has two batteries (one on the tablet and one on the dock), it will manage them both to drain one first and then the other.
The thing that messes up battery life is if you continuosly charge it despite not being drained. Also it isn't wise to let the TF die on battery and then recharge. Recharging the tablet when it asks for it (19-15% of battery remaining) is a good practice.
Cool thanks for the tips, this is my first Tablet (but my fourth android device), and was wondering because i noticed the dock drains out first and then the tab starts draining, but as the tablet is draining, it slowly trickle charges the dock at the same time (so it can still be used).
ex.
TF = 100%
Dock = 100%
then
TF = 98-0%
Dock = 0-3% (once the dock hits 0%, it starts charging off the TF but just enough to use it until the tablet dies)
PS. I created a sugar sync account from your referral so you could get more space lol
Sorry to revive an old thread... but for clarification, should you let both the dock AND the tablet drain before recharging, or is it ok just to recharge as soon as the dock runs out? this way the dock battery doesn't sit at 3% until the tablet battery dies (sometimes a 2-3 days)...
also, how long is too long to leave the tablet/dock plugged in after its been charged? (e.g. if you plug it in before you go to sleep it will be fully charged at least a couple of hours before you unplug it... is this frying the battery?)
thanks and much appreciated!
I dont think that leaving it plugged in is frying the battery, because it stops charging when its full. Also dual battery widget info shows when the battery was charged last time. e.g. last night around 4am plugged in tablet with dock to charge, woke up at 9am, both batteries were 100% (and not hot as while charging) and battery widget showed exact time when it stopped charging, which was around 7am. Rest of the time while plugged in it does nothing i guess
hairpower said:
I dont think that leaving it plugged in is frying the battery, because it stops charging when its full. Also dual battery widget info shows when the battery was charged last time. e.g. last night around 4am plugged in tablet with dock to charge, woke up at 9am, both batteries were 100% (and not hot as while charging) and battery widget showed exact time when it stopped charging, which was around 7am. Rest of the time while plugged in it does nothing i guess
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Thanks for sharing your experiences and the logic... That makes sense to me too... However, I do notice sometimes that the charger is quite hot still in the morning.... which makes me wonder. Add to this the whole idea of product life-cycle and planned obsolescence (and things such as internal non-user changeable battery) and I get a bit sceptical... but thats probably just me...
Modern batteries don't like to be drained and last longer if they're 'topped up' on a regular basis. The only time a battery should be drained now-days is if your calibration is off and the software needs to see where the 'top' and 'bottom' of the charge range is.
Also, if your charger continues to charge your battery once it's at 100% you should have that replaced as it's broken.
The old habit of 'deep cycling' your battery is for older style batteries.
If I'm not using my tablet it's on the dock, on a charge. It's fine.
Is there a way to monitor the dock battery?
grgmre said:
Modern batteries don't like to be drained and last longer if they're 'topped up' on a regular basis. The only time a battery should be drained now-days is if your calibration is off and the software needs to see where the 'top' and 'bottom' of the charge range is.
Also, if your charger continues to charge your battery once it's at 100% you should have that replaced as it's broken.
The old habit of 'deep cycling' your battery is for older style batteries.
If I'm not using my tablet it's on the dock, on a charge. It's fine.
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thanks!!
JerzyIroc said:
Is there a way to monitor the dock battery?
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Yep, get the Dual Battery widget:
https://market.android.com/details?id=org.flexlabs.widgets.dualbattery&hl=en
JerzyIroc said:
Is there a way to monitor the dock battery?
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try 'dual battery widget' available in market... (if this is what you are talking about...)
Or check out the themes/apps section for the official widget from the prime. There's one themed to look like our tf101. That's what I use.
EDIT: here's the one I'm using
http://forum.xda-developers.com/showpost.php?p=21533800&postcount=37
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.
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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
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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
Hi
Yesterday I was using my TF700 (with CROMi-Xenogenesis 4.6.5) to surf the web while I was watching E3 and suddenly it just died.
I tried to start it but nothing happened.
I plugged in my charger and after a few minutes in I was able to boot it.
The battery said that I had 70% left, so I unplugged the charger and continued using it.
A few min later my pad died once more and I couldn't boot it up without the charger and when I finally booted it up it said I had 70% battery left.
So, I once more plugged my charger in and kept it until it reached 100% and I downloaded a battery calibration app and after that I went to bed with the pad in my dock
Today my cat played a mouse catching game for about an hour in performance mode and the highest screen brightness and now my pad still shows 100% batter left? I also booted up in TWRP 2.5.0.0 and it also said that I had 100% battery left, the same goes for when I do a coold-boot.
Is there anyway to do a real battery calibration or any tips on how to solve it?
This was the Battery Calibration app I was using.
https://play.google.com/store/apps/details?id=com.nema.batterycalibration&feature=search_result
If you search the forum there is literally everything and anything you need to know about the battery, and even fixing this specific problem.
How to search
At the top, see "search this thread" and then above that "search all forums". Use the second one.
XDA search
http://forum.xda-developers.com/sitesearch.php?q=Battery level inaccurate
Google search
http://lmgtfy.com/?q=TF700T+battery+meter+is+inaccurate
I had this issue... no way to fix other then completely draining the battery and leaving it that way for several days / weeks until it decides to work again.
After updating to KatshMallow #26 I noticed my dock battery was never charging above 92%. I plugged the dock in alone overnight and the next morning it only shwed 87%. So I connect the tablet and ran it down until it shut off. Prior to shutting down the dock battery indicator never changed from 92%. I also didn't see any indication that the tablet was drawing from the dock battery. I plugged in the dock with the tablet attached and once I saw the green light on the tablet I powered it up. Dock battery = 87%, Tablet battery 100%. I left it plugged in with the tablet attached overnight and nothing changed. Same indications the next morning. Dock never moves from 87% no matter what I do. I installed Dual Battery widget and it only shows one battery. ???
Not sure what happened, and I don't think the update has anything to do with the issue. The dock battery has probably been going south for a while but I didn't notice it until I updated to #26. I have searched numerous threads looking for comparable issues but nothing matches. Even so I tried some of the different apps suggested with no luck. It is puzzling that Dual Battery Widget only shows 1 battery when the Asus indicators show 2.
I have found a replacement battery for $29.00 but before I spend the loot and risk trashing my dock I would like to be certain that it truly is a bad battery and not some flukey software issue that I can fix. Also, all other features on the dock work fine.
Any suggestions?
UPDATE: After leaving the tablet and dock combo unplugged for most of the morning, the orange power light on the dock began to flash. Once I plugged it in, it immediately went solid orange. My understanding is that the light flashes when the battery level gets below 10%. So is it working properly except the screen indicator is lying to me?