I have searched through the forum and tried all suggestions found, attempted to charge using a wallwart (known to be good) and USB (cable known to be good). Some background: last fall I was trying to flash the ROM and it got stuck in a boot loop. As I was visiting my wife in Taiwan (she teaches at a university there), I decided to take it to ASUS to have it looked at. They diagnosed a bad motherboard and replaced it, but not in time for me to take it home. It could not be shipped back because of the expense of shipping a lithium battery powered product was $$$$$. She brought it back with her and the battery showed as 80% charged (but the dock was out of juice).
I attempted to charge it normally, and nothing would charge, the tablet kept losing charge. I then attempted to charge just the tablet with the wall wart, and it would not charge. I tried a cold boot- no change. I tried turning off the tablet and charging it via the usb port of my powerbook overnight, and it did charge (not completely) and I then tried to finish charging it with the wall wart. It would not take a further charge. I am now attempting to bring it to a full charge via the usb port.
I tried charging the keyboard/dock via the usb port of the powerbook overnight, and it did not seem to charge. The keyboard will input to the tablet when connected, though, but there is no indication that the dock battery is active at all.
At this point, I am at a loss as to how to proceed. I suspect that the battery died for lack of a charge for such a long time (end of November to January 12) and that it must be replaced, but I am eager for some feedback from more experienced hands.
I also want to get it up and running on lollipop, but that will have to wait until this is resolved.
TIA!
nycellist said:
I have searched through the forum and tried all suggestions found, attempted to charge using a wallwart (known to be good) and USB (cable known to be good). Some background: last fall I was trying to flash the ROM and it got stuck in a boot loop. As I was visiting my wife in Taiwan (she teaches at a university there), I decided to take it to ASUS to have it looked at. They diagnosed a bad motherboard and replaced it, but not in time for me to take it home. It could not be shipped back because of the expense of shipping a lithium battery powered product was $$$$$. She brought it back with her and the battery showed as 80% charged (but the dock was out of juice).
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Click to collapse
So they charged it at the repair facility?
I attempted to charge it normally, and nothing would charge, the tablet kept losing charge. I then attempted to charge just the tablet with the wall wart, and it would not charge. I tried a cold boot- no change. I tried turning off the tablet and charging it via the usb port of my powerbook overnight, and it did charge (not completely) and I then tried to finish charging it with the wall wart. It would not take a further charge. I am now attempting to bring it to a full charge via the usb port.
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Click to collapse
Wallwart: How do you know it is good? Is it original Asus? Most usb chargers put out 5v, this tablet needs 15v. If you charge via PC USB port it's 5v, called a trickle charge and takes forever. Not even LEDs come on although it charges very slowly.
I suspect the wallwart or - if the cable is not original - the USB cable (even if it works with other devices).
I tried charging the keyboard/dock via the usb port of the powerbook overnight, and it did not seem to charge. The keyboard will input to the tablet when connected, though, but there is no indication that the dock battery is active at all.
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"No indication" meaning you do not see the dock battery icon in the notification bar?
By design the tablet gets charged first, then the dock battery. If you do this at 5V, you'll wait 'til kingdom comes...
At this point, I am at a loss as to how to proceed. I suspect that the battery died for lack of a charge for such a long time (end of November to January 12) and that it must be replaced, but I am eager for some feedback from more experienced hands.
I also want to get it up and running on lollipop, but that will have to wait until this is resolved.
TIA!
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Click to collapse
Take the combo to a store, ask them to use a original Asus charger. The dock battery may be busted, but my money is on the wallwart.
Thanks for your reply, I appreciate it!
berndblb said:
So they charged it at the repair facility?
Yes
Wallwart: How do you know it is good? Is it original Asus? Most usb chargers put out 5v, this tablet needs 15v. If you charge via PC USB port it's 5v, called a trickle charge and takes forever. Not even LEDs come on although it charges very slowly.
I suspect the wallwart or - if the cable is not original - the USB cable (even if it works with other devices).
I charged my phone with it (iPhone 5, charged fully in the normal amount of time. I have a multimeter if that would help. I tried 2 different usb cables, both of which worked with the tablet for a slow charge via usb
"No indication" meaning you do not see the dock battery icon in the notification bar?
By design the tablet gets charged first, then the dock battery. If you do this at 5V, you'll wait 'til kingdom comes...
Correct, I saw only one battery indicator, which, seems like it is the tablet, as the same data appears undocked
Take the combo to a store, ask them to use a original Asus charger. The dock battery may be busted, but my money is on the wallwart.
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I see little point in that, under the circumstances. I have charged the table 100% via the usb cable, I will see if it now accepts a charge from the wallwart.
nycellist said:
Thanks for your reply, I appreciate it!
I see little point in that, under the circumstances. I have charged the table 100% via the usb cable, I will see if it now accepts a charge from the wallwart.
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It won't. Not from a wallwart for an iPhone. You need a charger that outputs 15v.
If your battery icon doesn't show (even if it's empty) you either have a problem in the dock connector or the battery is totally dead. I think you'll find instructions to replace it on ifixit.com
berndblb said:
It won't. Not from a wallwart for an iPhone. You need a charger that outputs 15v.
If your battery icon doesn't show (even if it's empty) you either have a problem in the dock connector or the battery is totally dead. I think you'll find instructions to replace it on ifixit.com
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the wallwart was the Asus one that I charged the iphone with (not the iphone one), that is how I tested it. the iphone supposedly draws 12W, BTW
Related
Hi all,
Sorry in advance if I'm asking for something that has been answered before.
I have seen lots of threads that talked about the Asus Transformer tf101 and tf101G that doesn't charge correctly.
My TF101G stopped charging after it was fully drained after the kids played some games on it. When I plugged it in to charge the TF screen came on with a big battery indicator which showed a empty battery with red at the bottom. Then it just goes off. When trying to switch on again it just briefly flashes this battery and goes off again.
I left the TF to "charge" overnight and this morning after about 6 hours of charging it had +-14% battery life.
So it appears that the charger still trickle charges the TF when it completely off, but doesn't want to charge when it powered on.
Also, the TF recognizes the cable when it gets plugged in. If off and with some power in the battery the TF starts to boot up, but no charge indicator is showed when booted and battery drains as per normal.
Could it be that this is a software issue? I would guess not, but then again I ask myself if the charger or USB cable was broken then it wouldn't trickle charge. right?
Anyone came across this yet?
I know that some people suggested the freezer trick, but I don't want to do that before I checked on this with the community members here.
Many thanks in advance for your assistance and sorry again if I missed a similar thread.
Hhunted said:
... but then again I ask myself if the charger or USB cable was broken then it wouldn't trickle charge. right?
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It could. The charger cable got 2 red wires thats connected to the same point on the TF.
One of the wires is your normal +5v USB power, while the other is connected to a USB3 pin to tell the charger to spit out 15V instead of 5V.
If that particular cable is broken, the charger will only send 5V.
The odds that that small wire is broken though, is... well, very slim.
I am having the weirdest problem on my Asus Transformer TF101 . I had updated to ICS via ASUS's check update option and then it stopped charging at all ( I do not have the dock, just the wallwart) .... . It would not charge ( not even show a charge flash symbol on the battery ) when the tablet is on AND plugged in..It would ONLY charge with the Wallwart when the tab is completely shutdown .i.e. I would have to shutdown the tab completely and then plug it in so that it can trickle charge over night to +80%. I changed the cable , changed the wall wart same issue... Then I thought its possibly a sw issue so I resetted , wiped caches, reset battery stats and even upgraded the sw to a Rayman's CyanogenMod 10 ♦ B4 ( currently running it ) .. Now I can at least see a small charge flash symbol when the tab is plugged in but instead of charging the tab , when I look at the battery status it shows discharging.... I can only charge this dang thing when its completely shutdown.. I still think its a sw issue.. Wondering anyone else had this issue and more importantly what is the fix ?? ..
Fixes I found in the forum that I've tried so far :
1. check/uncheck the stay awake option
2. Rooted ,installed Rayman's CM10-B4 rom
3. install dual battery app to check battery stats,( dont know why was this suggested as a fix )
4. wiped battery stats in recovery mode , thrice
5. changed usb cable
6. Put the charger/wallwart in freezer overnight and then check the charging ..
I'm outta warranty duration so desperately need to fix this on my own ..
You are using the ASUS TF101 supplied charger with its included cable, and nothing else? I.e. no extension USB cord etc.
The ASUS TF101 charges using 12-15V from the wallwart, not the standard USB 5V. Using standard USB, it's only able to trickle charge during power off, and this sounds exactly as what you are describing.
I had the same problem a couple of weeks ago. I even tried the freezer trick too in desperation as it was my last resort before admitting defeat in my battle with trickle charging. In the end I purchased this charger off ebay:
http://www.ebay.co.uk/itm/140714910102?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
I know it's advertised as a UK charger but if you read further down the page they ship the US and EU charger too. I've had it for about a week now and it works perfectly. I was dubious about buying a non Asus charger after reading reviews about them on Amazon about overheating but mine seems fine. If anything it's actually cooler than the original one.
kuisma said:
You are using the ASUS TF101 supplied charger with its included cable, and nothing else? I.e. no extension USB cord etc.
The ASUS TF101 charges using 12-15V from the wallwart, not the standard USB 5V. Using standard USB, it's only able to trickle charge during power off, and this sounds exactly as what you are describing.
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I have tested with the same USB cable that came with it originally and the wall wart is original too. I changed the wall wart and USB to see if there's a difference but apparently none. Not using any USB hubs either...
michael_duvalle said:
I had the same problem a couple of weeks ago. I even tried the freezer trick too in desperation as it was my last resort before admitting defeat in my battle with trickle charging. In the end I purchased this charger off ebay:
I know it's advertised as a UK charger but if you read further down the page they ship the US and EU charger too. I've had it for about a week now and it works perfectly. I was dubious about buying a non Asus charger after reading reviews about them on Amazon about overheating but mine seems fine. If anything it's actually cooler than the original one.
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Thanks for the suggestion mate , I already tried z different charger ---this one seems to be a sw issue'
r00txs said:
Thanks for the suggestion mate , I already tried z different charger ---this one seems to be a sw issue'
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Sorry to disagree, but everything you describe sounds as a charger issue to me, not a SW issue. If it happens even with the TF powered off this makes me almost sure...
Sometimes it's good to start from the begining, although you think you have tried everything...
Get your TF, your asus original wall adapter and cable and try it. Does it work?
If not try another outlet on your house. Does it work?
If not, you may even try another outlet (work, school, whatever). Does it work?
If not exchange only the wall adapter (for another asus original one if possible) and start over.
If nothing changes, get back to your wall charger, change the USB charging cable and start again.
If nothing changes, change wall adapter + cable and start again.
Remember... The TF will only charge with the asus wall adapter and cable or a specific charger. If you try to use your computer's USB or a wall adapter from a phone / generic USB device you won't get any charge at all, and will only trickle charge when the TF is off.
CalvinH said:
Sorry to disagree, but everything you describe sounds as a charger issue to me, not a SW issue. If it happens even with the TF powered off this makes me almost sure...
Sometimes it's good to start from the begining, although you think you have tried everything...
Get your TF, your asus original wall adapter and cable and try it. Does it work?
If not try another outlet on your house. Does it work?
If not, you may even try another outlet (work, school, whatever). Does it work?
If not exchange only the wall adapter (for another asus original one if possible) and start over.
If nothing changes, get back to your wall charger, change the USB charging cable and start again.
If nothing changes, change wall adapter + cable and start again.
Remember... The TF will only charge with the asus wall adapter and cable or a specific charger. If you try to use your computer's USB or a wall adapter from a phone / generic USB device you won't get any charge at all, and will only trickle charge when the TF is off.
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Same problem and all i did was get a new asus charger and bam charging, thank you soooo much omg my tablet has been messed up for so long thank you.
Charging Problem
I'm using the original charger and yet the Dock will not charge and the TF101 won't charge unless i shut it down
rnahlawi said:
I'm using the original charger and yet the Dock will not charge and the TF101 won't charge unless i shut it down
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Sounds like there is an issue that the charger is not recognizing that an Eee Pad is attached. Might be time for a new charger.
Hello all, I have the exact same problem. I received my Asus TF101 for Christmas last year. Then later I found out that you need it root it in order to upgrade the OS. I rooted my TF, then I upgrade it the OS from Honeycomb(4.0.3) to Jellybean(4.1.2), (4.2.2) A month later after upgrading the OS my battery drain faster and I can only charge the battery with my TF turned off. If I plugged the the charger while its on it, the battery says its not charging. I change the wall wart and the cable but the issue still persist. Please help!!!
Sent from my Transformer TF101 using xda app-developers app
jbusti75 said:
Hello all, I have the exact same problem. I received my Asus TF101 for Christmas last year. Then later I found out that you need it root it in order to upgrade the OS. I rooted my TF, then I upgrade it the OS from Honeycomb(4.0.3) to Jellybean(4.1.2), (4.2.2) A month later after upgrading the OS my battery drain faster and I can only charge the battery with my TF turned off. If I plugged the the charger while its on it, the battery says its not charging. I change the wall wart and the cable but the issue still persist. Please help!!!
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Click to collapse
Is the new wall wart you are using a genuine Asus wall wart? If it is just a tablet USB charger, that will not work as the TF101 needs 15 VDC to charge instead of the standard 5 VDC of USB. The Asus wall wart auto-detects and switches between the two voltages to allow it to be used for other devices as well.
So I went to turn the screen on, noticed the battery was at 17%, then checked the battery info and it said it had been on battery for 3 days now (odd), so I tried to plug something else in the asus usb wall charger, didn't seem to be working, so I tried using my nook usb wall charger with the transformer (it was 2.0amp output i think), the transformer still wouldn't charge. Tried plugging it into another wall outlet, another house, a car, still won't charge. tried changing cables, did nothing. even tried changing the rom. was on paranoidandroid, then put back on cm10.
I didn't try changing the recovery (using TWRP) figured that wouldn't affect anything. When I turn the device off it does charge, but goes up by 1% every hour, or even less.
So I'm at a dead end on what is going on or what to do, anyone have any suggestions? I don't know if asus would still honor the warranty since I have it rooted or not.
Did you try wiping battery stats from CWM? If it comes to that, you can flash back to stock and Asus would be none the wiser.
Lethe6 said:
Did you try wiping battery stats from CWM? If it comes to that, you can flash back to stock and Asus would be none the wiser.
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Click to collapse
Well like my original post says, I'm using TWRP and not CWM... but I'll have to reinstall CWM because TWRP sucks in terms of features. Doesn't even have that battery wipe option. I'm going to try to install CWM and try that but my battery is very low now (6%.)
As soon as I reinstalled CWM the device now says "charging" but it still won't charge. Device is at 3% battery now, lock screen says charging, but the status bar says not charging. Even tried wiping battery stats.
Ellises said:
Well like my original post says, I'm using TWRP and not CWM... but I'll have to reinstall CWM because TWRP sucks in terms of features. Doesn't even have that battery wipe option. I'm going to try to install CWM and try that but my battery is very low now (6%.)
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I have good news AND bad news. The good news is: You're not alone cause I have the exact same problem and it's not your software, cwm or rom. The bad news is: it's your usb cable. As described in this excellent thread, the TF101 needs at least 11v to charge. The wall charger by default charges with 5v, unless there is a 15v cable plugged in like usb3 cable which will short so the charger will know what's attached. Then it will give a 15v charge and the tab will charge. Unless your usb cable is broken, like mine. I've attached a pic of my usb cable, where the yellow wire has come loose and the circuit is broken. The charger will only charge with 5v and the only when the tab is turned off. For the fun of it I will try to solder it, but the easier (and much less frustrating) way is to buy a new one on ebay for a mere 4 dollar. Bought mine today, so I hope it will ship soon. Good luck!
Maarten_0031 said:
I have good news AND bad news. The good news is: You're not alone cause I have the exact same problem and it's not your software, cwm or rom. The bad news is: it's your usb cable. As described in this excellent thread, the TF101 needs at least 11v to charge. The wall charger by default charges with 5v, unless there is a 15v cable plugged in like usb3 cable which will short so the charger will know what's attached. Then it will give a 15v charge and the tab will charge. Unless your usb cable is broken, like mine. I've attached a pic of my usb cable, where the yellow wire has come loose and the circuit is broken. The charger will only charge with 5v and the only when the tab is turned off. For the fun of it I will try to solder it, but the easier (and much less frustrating) way is to buy a new one on ebay for a mere 4 dollar. Bought mine today, so I hope it will ship soon. Good luck!
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Thanks for the information, I didn't realize the asus usb wall charger was rated at 15v = 1.2a, because here all this time i thought it was the amps that made the difference. Also I did had two asus usb cables. I plugged back in the original asus usb wall charger and the device says charging by ac now.
So I have confirmed my problem was when I flashed the TWRP recovery, for some reason it wasn't allowing the device to charge correctly, the CWM recovery works fine.
Since last night my a510 won't charge at all. There was a thunderstorm and a power cut and the charger was connected to the socket (a multi socket with several other items including a phone charger) but not to the tablet. When I plug it in now there's no indication that it is charging and the battery keeps going down. I tried with the phone charger also and a USB cable on the PC. While I know at best this would charge the tablet in 24 hours or so there was again not sign of charging at all.
Is it still most likely to be the Acer charger that's at fault or is there something else I could try?
pickarooney said:
Since last night my a510 won't charge at all. There was a thunderstorm and a power cut and the charger was connected to the socket (a multi socket with several other items including a phone charger) but not to the tablet. When I plug it in now there's no indication that it is charging and the battery keeps going down. I tried with the phone charger also and a USB cable on the PC. While I know at best this would charge the tablet in 24 hours or so there was again not sign of charging at all.
Is it still most likely to be the Acer charger that's at fault or is there something else I could try?
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Click to collapse
edit: turns out it does trickle charge with a normal USB charger even if the charge light doesn't come on. Seems to be really hard to find a replacement for these though.
pickarooney said:
edit: turns out it does trickle charge with a normal USB charger even if the charge light doesn't come on. Seems to be really hard to find a replacement for these though.
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12V, 1.5 Ampere, I believe just about any electronics outlet should have something in stock. Original would be better, true. Get a surge-protected multisocket if your area is prone to bad weather.
Luther Blissett said:
12V, 1.5 Ampere, I believe just about any electronics outlet should have something in stock. Original would be better, true. Get a surge-protected multisocket if your area is prone to bad weather.
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The problem is the MicroUSB port on the tablet has an extra connector so I don't think it will be possible to use a normal microUSB cable with a 12V adapter.
pickarooney said:
The problem is the MicroUSB port on the tablet has an extra connector so I don't think it will be possible to use a normal microUSB cable with a 12V adapter.
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I tried with another adaptor which has the right shape and 12V output and is supposed to be compatible but not joy. It might be the tablet itself but it's weird if it just stopped working overnight.
warranty
pickarooney said:
I tried with another adaptor which has the right shape and 12V output and is supposed to be compatible but not joy. It might be the tablet itself but it's weird if it just stopped working overnight.
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I had the same problem, after 2 month my charger was dead. I Contacted ACER send in the tabled and got a new charger in about 1 week.
You need 12 Volts for Charging 5 Volts want Charge your Battery fully.
I've successfully replaced the battery of the dock with a new one. It was showing some charge 36% instead of 0% and no more tablet draining, but it never charged! So now it's at 9%, red dot blinking, and I don't know how to fix it! Charging sign appears when plugged in and tablet charges trough the dock.
I've tried the cold boot and the trickle charge but I didn't see changes, maybe I've done something wrong?
What more can I do to make it charge again?
I thought it was the charger or the cable but for what I see the 40-pin connector has actually only the 4 pins (the usb signal) so I don't think I need another cable.
bichpm said:
I've successfully replaced the battery of the dock with a new one, but it never charged!
I thought it was the charger or the cable but for what I see the 40-pin connector has actually only the 4 pins (the usb signal) so I don't think I need another cable.
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Click to collapse
I don't believe it is a software issue. It might be a contact issue caused by yourself I think.
Firstly disconnect your tablet from the dock. Connect it with the charger and check if it is going to be charged. If so, your both charger and cable are OK.
Secondly check whether all contacts between the battery and the dock are closed correctly or not. Please follow backwards the sequence you used to taking out the old battery by yourself.
try and charge it with the official charging brick, or at least something that can put out 15V at 1.5A i had the same problem when using my tablet after a long time and only my tablet would get charged not the dock
Yes I'm charging it with the official charger, maybe it got some problems
I don't have a tester at the moment but I got a doubt. Is it possibile that the cable has 2 charging lines one for the tablet and one for the dock? Because I want to buy another charger but maybe it could be not compatible for charging also the dock.
I opened it again last weekend and there was nothing unplugged, everything was good.