I've been enjoying my TF300 since the month it was released, but in the past few months the battery stats have become less and less accurate. I was watching YouTube videos on it while it was docked and charging yesterday when it suddenly died, and I haven't been able to get it to boot since. Sometimes it will start to boot, but die half way through the boot animation, which implies that the battery isn't charging.
When I plug the charger directly into the tablet, it flashes orange twice and then does nothing. When I plug the charger into the dock, that shows green - so I assume the dock is fully charged. When I plug the tablet into the dock, it flashes red twice again.
The logical assumption from this is that my TF300 has stopped accepting or holding a charge. My question is, which part do you think I should try and replace first? I understand that the dock connector has separate pins for 5V and 15V charging, so maybe that's been bent or broken somehow...or the battery itself could be worn out...or the motherboard could have developed a fault. Has anyone had a similar experience to this? I don't want to buy a new tablet as there is absolutely nothing wrong with my beloved Transformer other than this!
I'm going to leave it plugged directly into a standard PC USB port for several hours tomorrow while i'm at work, to see if it will trickle charge that way. That would imply the charger is at fault, despite the green light from the dock when it's plugged in.
sort of same here
My thoughts are that the one battery is no longer seen by the tablet and the other is getting too much of a workout as a result.
We have possibly just lasted beyond it's expected lifetime - which is kind of dissappointing. I don't understand exactly, but we might troubleshoot this still.What rom or Firmware are you using? I am on straight CM11 with no other modifications. I am using the tablet docked al th time and th rom "sees" the two batteries but dies at about 50% of the one without touching the other. I'm pretty sure that it really only is using the dock battery and never seems to go to the tablet battery anymore. Wish I could fix it - will try to use it without the dock and see what happens.
It was running KatKiss 5.0.0 - I kept reminding myself to go and download the latest update but never got around to it.
After leaving it plugged into a standard 800mA charger all night and all day, it booted for about 20 seconds and then died again before it reached the lockscreen. It seems that the battery is either charging unusably slowly or not at all. I may have to start hunting for a new convertible!
jonty-comp said:
It was running KatKiss 5.0.0 - I kept reminding myself to go and download the latest update but never got around to it.
After leaving it plugged into a standard 800mA charger all night and all day, it booted for about 20 seconds and then died again before it reached the lockscreen. It seems that the battery is either charging unusably slowly or not at all. I may have to start hunting for a new convertible!
Click to expand...
Click to collapse
Well mine is working fine disconnected from the dock - so it sees the Tablet battery and uses it now; I will use it until it needs charging and then try again - by attaching the dock and charging etc. Will yours work if just plugged in? - like a laptop with an old battery, does it still work but you are tied now to the power supply / charging cable? I have installed the latest "homebrew" Omni now to just get a new start on things and will continue to just use up the battery and see what happens next. My preference is to have vanilla CM but it seems the tablet battery was invisible. I hope by re-setting things and having a new Rom in place will give me a clean slate.
Sadly no, it doesn't run even when permanently tethered to the power supply. I think the battery has to report a minimum state of charge before it's allowed to turn on, and that's where it's failing in my case.
Batteries are back
I wish that I could tell you how - but I can't - the batteries are back to full functionality. I will tell what I have done and this might possibly help. I installed Omnirom with Lollipop and it worked but was very slow. Then I installed CM 11 back (then CM 12, then CM 11 again all with the appropriate GApps & SuperSU etc.) and it seemed to put things back in order. I did also install a battery calibration app which just deleted a file tracking the battery(s). Some where in there the batteries starting working properly - this involved more than a few re-boots and re-installs (dirty and clean). In all this mess lies a possible solution or maybe it was when I slammed it shut in frustration - this could all be due to a loose wire/solder joint too. The battery is following the "normal" process now of first draining the tablet battery to ~ 80-90%, switching out to the dock battery, then switching back to the tablet when the dock is drained fully.
@kjwaugh
I can't recharge my battery and I have CM-11-20150112.
My little led never turn on orange light.
My question for you is: Does your led turn on when you plug in the USB cable ?
I'm afraid I have broken some analog circuit inside the tablet or, I hope, only the cable.
Please let me know.
Related
My TF pad charges just fine, so there is not any problem with the charger. However, the dock does not charge at all. Even after 12 hours plugged into the wall with the unit turned off, the orange light is still flashing when I boot up. This might be a problem with the firmware. I am running:
HRI66.US_epad-8.2.3.13-20110511
I read somewhere that I should reflash the firmware. I have downloaded this version of the firmware onto a USB drive and the TF recognizes it but will not open the zip file.
What are the steps required to reinstall this firmware? Does anyone know of any other ways to fix the charging problem? The ASUS support site is nearly worthless. I humbly apologize in advance for my ignorance and thank anyone who responds.
that is the Build Number, and mine is the same and I updated everything correctly so it looks like you have the most updated version.
My MobileDock version is EP101-0209
It might be an issue with the dock charger, a hardware issue, the battery may have stopped working, we never know...
if it's a firmware issue, give Asus CS a call and ask them what to do next or how to properly install it.
Does anyone have any other suggestions? My keyboard has stopped charging as well.
Same for me unfortunately
Sent from my Transformer TF101 using XDA Premium App
I had the same issue and had to unplug and wait, switched outlets and it's fine now.
There is definetely something wrong.
Maybe it's designed to fully charge the tablet first then start topping off the dock.
I had the same issue - constant flashing orange led no matter what configuration I tried.. TF docked, TF not docked, TF docked powered on, TF docked power off, change outlets, let it sit for hours and hours (over 24 at one point) etc etc
Nothing worked.
And like yours, my TF always charged - whether docked or not.
Called Asus - w/o even asking any questions they just directed me to the RMA dept.
Instead I just returned it to Amazon and then waited until I could order another one. It took nearly a week, but they finally came back in stock on Amazon (for an hour) and I ordered another.
It should be here Wednesday, so by then I'll know FOR SURE whether it was the first dock that was bad - or if it's my charger / cable.
I'll post back once the new one gets here..
My keyboard is waiting for UPS pickup for a Newegg RMA. The keyboard is deactivated at Newegg now. I'm wondering if they will wait for more stock or give me a refund. I'm just glad I still have the tablet.
Does anyone know how widespread the dock charging problem is, and if newer units have any changes to fix this?
The docks were scarce here in Taiwan, still are. That must be an indication something is rotten in Denmark and Asus knows and are working on it.
Updating from my earlier post: My new keyboard / dock arrived yesterday. When I plugged it in, the LED was solid orange (ironically, this LED looks a lot more "red" whereas on my other dock it was definitely "orange").
I charged it for 8 hours and the LED turned green during the charging time.
So at this point I can definitely say that it was the dock that went bad and would not charge - as opposed to the charger being bad.
I would advise just returning your dock to the place of purchase if it's no longer charging.
Be interesting to see if those having charging problems with the dock have an orange or red led. I have had no issues, but my led definitely looks red. When the charger is charging, it gets very warm (hot). If your dock has been plugged into the charger for more than 20 mins and the charger is not very warm, it probably isn't charging.
Just wanted to update my previous post (2 up) because now my second dock is dead.
Under normal usage everything would worked fine - the battery would drain and then charge - no problems at all.
HOWEVER - There appears to be BIG problem with these docks and I feel this is what is causing (or contributing to) my docks dying. These things have a constant drain on them when the Transformer tablet is attached - even if you power the tablet OFF.
http://forum.xda-developers.com/showthread.php?t=1112835
I believe what is happening in my case is that the dock battery drains to a point where it will no longer accept a charge. In both cases, I had the tablet docked to the keyboard - powered OFF - and did not use it for a week or so. When I went to power it on, the tablet/dock had just enough juice to tell me that the battery was very low (I believe around 1%) and that it needed to be charged - and then it shut down.
OK, fine, no problem. I plugged it in to charge and left it.
The tablet charged up to 100% with no issues, however 72 hours later and again I have a keyboard dock with a constant blinking orange LED that will not charge. Again, I tried charging it with the tablet attached and without - no change. The adapter doesn't even heat up when trying to charge which again tells me that something in the battery on the dock is not accepting the charge.
Looks like this one will be going back to Amazon as well. I'll also contact Asus regarding the issue and will report back what I hear.
Hello,
I Have the same behaviour,everything were fine until I unplug the dock during several days and the charge was down at 0%.
Now, I 'm unable to charge the dock with or without the tablet plugged
I hope that it's only a firmware issue.....................
RSY42 said:
Hello,
I Have the same behaviour,everything were fine until I unplug the dock during several days and the charge was down at 0%.
Now, I 'm unable to charge the dock with or without the tablet plugged
I hope that it's only a firmware issue.....................
Click to expand...
Click to collapse
Sorry to hear it, but thanks for letting us know.
I have a bad feeling that this is an issue that is going to end up biting MANY users after their return period has expired. It seems that the huge majority of TF owners use their tablets / docks nearly every day - if not daily - so they won't run into this problem.
I'm concerned that after a month or so and some of the excitement has worn off, and they put their TF/dock away for several days suddenly their dock will be rendered useless (at least as far as the extra battery goes).
I've just sent a note off to Asus (per their request from my Amazon review) and I'll let you know what I hear back.
OK
thanks you for your action !! and to keep us informed.
For me, a lot of people are concerned ..... as you said...
i have same question too
My dock has same problem, have tried with or without tablet recharging, the led of dock is always blinking red when tablet connected, and dual battery widiget always display it's discharging and slow draining from 40% to 35% now.
In order to consolidate and try to keep this issue in one thread, I'll only be updating this thread going forward: http://forum.xda-developers.com/showthread.php?t=1112835
I just added my latest correspondence with Asus on the matter, but unfortunately it doesn't look like I'm really getting through to anyone of quality over there..
gents,
just wanted to add my possible fix for this issue.
I had this probem and my dock would not charge. Somehow i got it working again. Here are the steps i took, not sure what fixed it in the end but you could try and replicate and see how you get on.
1. I went to charge my keyboard on its own. I left it charging for hours and it was still flashing red.
2. docked the keyboard and the power widgets showed no juice within the dock althought it worked as a keyboard.
3. I plugged the power in the dock while docked and on. It showed that it was charging the tablet but not the dock. The dock stayed at 0%.
4. I left the two charging while on for a few hours. The tablet was now showing as charged but nothing still in the dock. I then shut down the device with a turn off but left the power and the dock in. As i shut down the light on the side went to solid red and stayed solid red while the device was off.
5. I left the device off but with the charger in the docked keyboard for about 10 minutes. I then turned the device on while docked and still charging. When the device turned on the battery widgets showed the dock with 35% charge. i left the device alone for a while on and dokced and charging and after about 10 minutes the dock charge started going up. I left the dock charge while the on the tablet was on and docked until the dock was charged to 100%. I then turned the tablet off. took the charger out and undocked. Turned the tablet on while on its own. Then docked it with the dock with no charger in and da daaar the keyboard showed 100% charge and was working......yea!
This is what I figured out, not sure if it's actually true but whenever I did some huge data transfer from the datacable computer --> tablet afterwards it wouldn't charge... so I had to leave it unplugged for over 6 hours adapater and cable, then tried again and it works... still going to go visit the local asus warranty center sigh.
I posted this to another similar thread but they have solved their problem but mine is not solved.
A little background:
It was most recently upgraded to the the newest OTA and been stable since then. The unit is nearly 1 year old B50. So I know all about holding the power button down for different lengths for different purposes. It is NOT that. Until two days ago, everything was working fine.
First, I couldn't turn it on. I thought since I was travelling and using it a lot, it just ran the battery down. So when I got to the hotel room, I plugged it into the wall charger and it turned on. I was relieved for a while. Then I checked the battery (dual battery widget) and it shows 86%. When I was leaving the room, i pulled it off the wall and bam...it shuts down completely. Curious, I plugged in the charger and it boots back up (asus logo and whirling circle). I decided to leave it plugged in all night.
The next morning, I pulled it off the wall and bam, complete shut down. I plugged it back in and check the battery status. Still showing 86% and I notice it is not charging. I check the battery summary and it shows, battery = unknown error.
I did the hard reset (with it plugged in) VolDown/Power sequence. No luck. I decided to wait until i get home to test further.
At home, I plugged it into the dock. Widget shows the base battery is charging but the tablet is not charging. (it turns on when plugged into the base). It stays on even after I unplugged the base from the charger but the moment i remove the tablet from the base, it shuts of completely.
At that time, I decided to do a complete factory reset. After the reset, it is still having the same problem and dual battery widget is reporting the same unknown error problem.
In summary:
1) The unit will not turn on if I don't have the power cable plugged in.
2) When the cable is pulled out, the unit turns off and will not turn back on
3) When the cable is plugged in, it turns on and work just fine
4) When I put it on the keyboard dock, it turns on and work just fine
5) When I pull it out of the keyboard, it turns off and will not turn back on
6) I have soft reset, hard reset and factory reset (all with power plugged in) because nothing will happen without the power plugged in
7) Battery status shows 86% but not charging:
--When plugged into the wall
8) Battery status shows 86% but not charging while in the dock.
--The dock battery shows that it is charging and the light on the dock is green
I have tested and knows the charger works and the dock battery works.
The main unit battery will not deplete and will not charge and will not keep the unit running.
What do I need to do? Any thoughts? I would greatly appreciate some help.
Are you rooted? and did you try to clear the battery stats?
https://play.google.com/store/apps/details?id=com.nema.batterycalibration&hl=en
you can use that to clear your previous battery stats, and may help with getting a better reading on whats wrong. a messed up battery stat maybe messing with the charging process.
No, it is not rooted. I have just reset to factory settings again. But I might take that route soon if I don't hear from Asus. Is there an good detailed instructions for rooting my TF101?
bghlim said:
No, it is not rooted. I have just reset to factory settings again. But I might take that route soon if I don't hear from Asus. Is there an good detailed instructions for rooting my TF101?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1366743
you can start there. i got rooted when it was in HC didnt like the stock feel, so went to Prime Rom( honeycomb builds) the dev kept it close to stock but with some tweaks to the kernel. was a bit afraid to root at first, but just read through the tutorials, and just did it.
anyways Good luck!!
OK, nothing else seems to work. So, I am trying to go down this rooting road and using the battery calliberation tool.
As I was reading through the instructions, I find the build version supported is much older than mine (9.2.1.21) so, unless i am reading something wrong, this will not work.
Anyone has any other thoughts? Thanks in advance.
Tried the following methods=
Cold boot
Switching from PC USB to Asus charger
Switching from other manufacturer's charger to Asus
Freeze the charger(???)
Adaptor charge the tablet in good order, but it doesn't seem to be charging the doc.
The dock is always blinking rapid amber led when plugged in and the adaptor just get really hot.
Guys, any advise? Warranty expired, it gonna hurt my wallet to send in for repair ;(
Sent from my Nexus 7 using xda app-developers app
If you let the dock drain 100% it sometimes encounters problems. If you open up the dock you will see a little switch. Flip it back and forth and it should start charging again
mrevankyle said:
If you let the dock drain 100% it sometimes encounters problems. If you open up the dock you will see a little switch. Flip it back and forth and it should start charging again
Click to expand...
Click to collapse
where exactly is that small switch ??
RIght beside the battery on the charging port side if i remember correctly
mrevankyle said:
RIght beside the battery on the charging port side if i remember correctly
Click to expand...
Click to collapse
Got the same problem as the OP - Dock not charging and even the dock option is greyed out within the Settings - Interface - Launcher option.
My question is - Is there any software command that would simulate the flipping of the switch using ADB etc? Would not want to open the dock as yet..
It works properly when I attach it to the tablet, only problem is that it doesn't charge...Any pointers would be more than welcome!
Am on 4.1.2, CM10 2012 12 08 Unofficial
Thanks!
Try a cold boot, it fixes lots of these problems. Hold the power and vol down buttons till you see 2 icons on the screen, then release the 2 buttons and let it boot. Try it while docked and it should start charging again.
Lethe6 said:
Try a cold boot, it fixes lots of these problems. Hold the power and vol down buttons till you see 2 icons on the screen, then release the 2 buttons and let it boot. Try it while docked and it should start charging again.
Click to expand...
Click to collapse
Yes, already tried that (it says cold booting linux and all..) , I tried it while docked and with the charger in the dock..but still the same orange blinking light..Dual Battery Widget also doesnt detect the dock..though I can type with the keyboard and all that stuff..
Guess you should open it up then, and try to switch trick as I doubt there's an ADB command for a hardware switch inside a "third party device" since it's not part of android but really an extension that probably requires drivers and/or kernel modules outside of stock android. If there is, it's probable it's not documented if it was added by Asus for Asus. While it's opened up inspect the battery for obvious signs of wear/damage. Dual battery widget didn't work for me on some ROMs (can't remember which exactly but only the tablet battery was detected) but recent CM10 should have a separate icon with a dock through the battery icon while docked.
You can try the dumpsys utility from ADB, which prints out battery info so you may find something, but you can't manipulate data at all:
adb shell dumpsys battery
Also, did you try wiping the battery stats in recovery? If you have that option...
And lastly, lots of people are suggesting the freezer trick. To me that would be last resort but it looks like it's working for some people it seems.
Lethe6 said:
....it's probable it's not documented if it was added by Asus for Asus...
...You can try the dumpsys utility from ADB...
Also, did you try wiping the battery stats in recovery? If you have that option...
And lastly, lots of people are suggesting the freezer trick. To me that would be last resort but it looks like it's working for some people it seems.
Click to expand...
Click to collapse
Thanks for your detailed analysis and useful suggestions - just reflashed the CM10 8th Dec UNofficial rom y'day only and then recovered all the apps etc..But your idea of wiping out the battery stats didn't cross my mind! Should be there under advance I guess within recovery..(Have touch based 5.9 or something)
I would let the charger plugged into the dock and then try again the cold boot trick to see if that resolves the issue..Else would see if I have the option of wiping battery stats within recovery..
I am currently on vacation and hence donot want to open up the Dock here, freezer trick while harmless but I fail to understand logically how that would help Nevertheless would try it out if the above doesnt work..
Would report on the updates tomorrow (after 12 hours or so.)
The freezer trick is an oldie but a goldie. I used to do it with old hard disks that had certain problems and it worked in some cases, but usually you had an hour or so to salvage the data then it would die for good...
The logic behind it is that cold contracts the parts while heat expands them. So if it's a bad solder or something alike, the cold can temporarily fix it. But as I said, it would be a last resort for me and I'd triple seal it in ziplock bags to make sure no humidity can get in or out.
Let us know how it works out!
Lethe6 said:
The freezer trick...
..Let us know how it works out!
Click to expand...
Click to collapse
I am actually inclined to open up the keyboard and flip the damn switch now!
Also I did try cold booting (as the tablet had charged to 98%) and also wiping out the battery stats, but no change in situation still.
Opened the keyboard, flipped the switch but still no change..Orange light just keeps on blinking approximately every second..
Am at a loss to understand what could be the problem - the dock and tablet were bought in Sep last year and the dock has hardly been used (probably not for more than 20-30 hours in the last 14 months or so..)
Anyway I havenot closed the keyboard completely, would flip the switch again after sometime and see if that changes the charging behaviour in any way!
Anyone who has had success with dock charging issue after flipping the switch?
Update on previous post - Suspecting that it could be a software issue as well, I flashed an old Megatron Rom (based on CM9), and tested the switch again.
Switch off - Only EeePad's battery is shown
Switch On but no charger - Dock's battery is shown (symbol of battery + Keyboard) BUT with a red exclamatory sign, along with the normal EeePad's battery
Switch On and with Charger - Dock's battery is shown (symbol of battery + Keyboard) with charging sign , along with the normal EeePad's battery
So definitely an improvement as compared to CM10!!
Wondering if I should search for a Stock (Rooted ?) Firmware and flash that..Or probably just a firmware for the dock (does that exist?)
I'm pretty sure there is firmware for the dock (I think you see it in the settings while docked) but I don't think it's available, nor does any rom actually change it they just "use" it. For sure the best thing to try would be stock now with dual battery to make sure it works properly. Easy flasher will get you back to stock, provides root and can install different recoveries for you (there's plenty of others but this one seems easiest and worked best for me).
I'm thinking you're right on both accounts: the switch did work and there's a software issue somehow causing this. I've seen stranger things with custom roms. Glad you're making progress!
Lethe6 said:
.. the best thing to try would be stock now ..Easy flasher .. seems easiest and worked best for me..
Glad you're making progress!
Click to expand...
Click to collapse
Thanks a bunch Lethe6 !! I have downloaded the Easy Flasher (V 0.8.3 Stable) and am downloading the Stock Rom from ASUS WebSite (300MB)..Its a slow connection here, so I would be able to report back by tomorrow only..But I am optimistic that Stock Rom should resolve the issue with the charging!!
Thanks once again for providing the links, I would report back tomorrow on the progress!
UPDATE on prev post - Flashed the latest stock from ASUS Website ..It does show the Dock Battery BUT at 0%
And from what I read here, I seem to have run out of lack as apparently there is a design flaw wherein there is no way a dead battery can be revived!!
(I ran out of warranty in September but as I wasn't using the dock really at that time, I didn't bother to look into the issue at that time..)
That really sucks But it must be a particular model because mine has went to 0% numerous times and I've never had that issue before. Did you try the freezer trick? At this point if it's supposedly completely dead, might as well give it a shot. Also some people suggest plugging it into USB for 5-12 hours, the trickle charge may help getting it going again. If the tablet is not 100% charged the dock won't start to charge either, so try just with the dock then try with both. Also check this out, sometimes strange fixes are the best.
You can probably find a refurbished dock for under 100$ during the holidays online, if you really need it.
Out of curiosity which series dock do you have? Mine is a B70 purchased in UK last September..(Tablet is also having a S/N starting with B70 and SBK v2)..
I tried the other fix as well that you mentioned - that is using a different USB charger, to my surprise without the tablet attached, there was no light on the dock. but if I attached the tablet, then orange light was blinking much quicker! So seems like the dock is quite sensitive wrt the current supplied through the USB cable..(Guess all USB chargers have typically 5V output or something?)
On using the original ASUS USB Charger, light blinks slower (with or without the tablet attached)..Have left the charger plugged in again ..in the faint hope that some trickle charge is able to revive the dock's battery!
And no, haven't tried the freezer trick as yet
Would probably contact ASUS UK once I am back in UK..
My "mobile dock" version (you can see it in settings -> about tablet -> mobiledock) is EP101-0213 and my tablet is SBKv2 C30 purchased in Canada 6 months ago.
There's a nice article explaining voltages and amps in relation with phones (which applies to almost any mobile device), however from what I read, the Asus wall charger has a different pinout for USB and feeds the power differently. I'm sure you can find the exact specs here somewhere, I saw people showing how to make your own charger.
But assuming you're right and it's sensitive to the current (Bad design? Cheap parts?) then it's possible that simply replacing the wall charger would solve it. I bought a spare one to leave at work for 8$ on ebay and it works nicely so far!
Just out of curiosity.. did you/can you try to connect it to another power source? Like a different house? I once had a problem with a charger that there was too much noise on the electrical system and the charger couldn't keep a decent current output because of the variations, so the phone would say it was charging but it wasn't; tested later at several locations and it was working. I know it's a long shot but hey at this point...
Thanks! Would have a look at the link you provided..Meanwhile I also came across this link which kind of indicates that using a 12V 1A charger fixes the dead battery! Would probably order the relevant stuff from ebay and see how it pans out! Just crossing my fingers at this point really and have also left the charger plugged in to see if it does trickle some charger into the dock!
After flashing the latest stock rom (instead of CM9 or CM10), I also have same version for my dock ending in 213..
Finally apparently it seems that USB Debugging off/on also seems to affect the dock's battery as per the various other charging related threads on XDA..
Thanks for all your suggestions - you keep me motivated to try out various things and I am learning new things as well !
PS : Forgot to mention that I had already tried a different power outlet (i.e. in UK) and now another one in a totally diff country!
Hi,
Last year my girlfriend allowed me to root her Sensation to try out different ROMs and all went well. A few months ago however, she started to have problems while charging her phone.
If she plugs it in while the phone is closed, the orange LED flashes on/off at around a 2 second interval, instead of holding it's colour. Furthermore, it never changes to green to indicate that the charge is complete. When the phone is in this state, she can't turn her phone on either - she has to unplug it in order to turn it on. If the phone is already on, and she plugs it in, everything behaves normally.
Either than that, the battery seems to hold the charge normally and the rest of the phone still works very well.
I've tried searching for similar problems but haven't landed on anything similar or which may be helpful. It's really got me stumped to what could be the cause, and more importantly, how to fix it!
Would someone have any ideas?
Thanks!
Does the phone behaves in same manner if it's fully charge n switched off when plugged to the charger.does the orange led fluctuate.
The orange led fluctuate whn the voltage of charger is less and it takes times to charge try switching the charger means if you use wall charger then charge through pc and vice versa
Hit thanks button if you find me helpfully
sent from amazing HTC sensation using xda premium
We tried switching from wall plug to USB on the laptop and it does the same thing. However, we noticed that if the battery isn't completely drained, the led doesn't flash - it charges normally.
Would there be a way around this?
I'd pick on the odds that the LED light hardware controller is slightly faulty, but if its really like you said its nothing to worry about, right?
System92 said:
We tried switching from wall plug to USB on the laptop and it does the same thing. However, we noticed that if the battery isn't completely drained, the led doesn't flash - it charges normally.
Would there be a way around this?
Click to expand...
Click to collapse
Hi,
greetings
this used to happen with me when i was on stock rom.
the problem is when the battery is completely drained it needs lots of voltage to get charge
for this problem i took my cell to htc service center and they replaced the adapter and the problem was solved
i think you must buy a new adapter or say a new charger i thing that must solve your problem of led and your phone will get charge as normal even with the battery completely drained OR i think we get wall chargers you can look at the picture in which we have to place the battery and the battery gets charged you justt have to put the battery.. this charger is locally available in indian market for 80 to 100 rs.. you can search on net for the charger this is really a good thing and is a universal charger chagers each and every battery here in india we call it as khekda (marathi word for carb ) charger
let me know if it does solve your battery
I have the new Shield K1, and it worked great for a few weeks.
Lately, my shield isn't charging as fast as it used too, and when it's plugged it, it doesn't show the charging icon in the status bar. I've tried dozens of cables and adaptors, none of them had any effect. The tablet still charges, but very slowly. OTG accessories still work fine.
When I first got my shield, it charged super fast (using my nexus 7 2012 charger), but now none of my 5v2a chargers work.
A point of interest, I have a portable battery pack that also used to charge my tablet fine. It used to fully discharge in about 4-5 hours with my tablet, now it takes about 14-15 hours, does that mean my tablet is not drawing as much power as it needs?
Shield Tablet K1 / 5.1.1 - rooted / TWRP - multirom
Figured it out. I flashed multirom for the original shield tablet, and it overwrote the firmware for USB support. To fix it, I flashed a full stock OTA image for the original shield to the K1, then I flashed the system image of the K1 lollipop. Multirom and USB work fine now.
28362836 said:
Figured it out. I flashed multirom for the original shield tablet, and it overwrote the firmware for USB support. To fix it, I flashed a full stock OTA image for the original shield to the K1, then I flashed the system image of the K1 lollipop. Multirom and USB work fine now.
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Click to collapse
Nice! Always like to see questions be answered by OP. Im looking forward to rooting mine.
Any idea how to get rid of this issue on stock ROM?
28362836 said:
I have the new Shield K1, and it worked great for a few weeks.
Lately, my shield isn't charging as fast as it used too, and when it's plugged it, it doesn't show the charging icon in the status bar. I've tried dozens of cables and adaptors, none of them had any effect. The tablet still charges, but very slowly. OTG accessories still work fine.
When I first got my shield, it charged super fast (using my nexus 7 2012 charger), but now none of my 5v2a chargers work.
A point of interest, I have a portable battery pack that also used to charge my tablet fine. It used to fully discharge in about 4-5 hours with my tablet, now it takes about 14-15 hours, does that mean my tablet is not drawing as much power as it needs?
Shield Tablet K1 / 5.1.1 - rooted / TWRP - multirom
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Click to collapse
ntn_labs said:
Any idea how to get rid of this issue on stock ROM?
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If you are having slow charging issues on your Shield K1, here are a few steps that might help you. (please note: the average complete charging time for the Shield K1 is between 2-2.5 hours under continuous operation.)
-First off, your power supply. Your Shield Tablet requires a minimum 2A 5V power supply to charge at any reasonable rate, and I suggest using a 2.5A power supply along with a high quality cable to ensure quicker charging.
-Secondly, are you using the tablet while it is charging? Keeping the screen on, playing games, watching videos, or even apps running in the background while charging can cause it to slow to a halt easily. Try turning the tablet completely off and charging it then to see if it charges significantly faster, if so, that might be the problem.
-Thirdly, the tablet's USB port. Check to see if there is any debris in the Micro USB port on the tablet. Make sure the port isn't broken by gently wiggling the USB cable to see if it's loose, or if it disconnects in certain positions. Check that the cable is plugged in all the way, it should "Click" when inserted.
-Finally, you said the tablet is running a stock ROM, but do you have any custom recovery/bootloader installed? If so, try flashing the stock bootloader and recovery, and see if that helps.
If none of this helps you, and you still have a warranty in place for your tablet, I would suggest sending it in for repair or replacement.
Well, first of all I guess I'm gonna say that I'm not a newbie. If that thing to the left is of any indication, I should be able to diagnose most of those steps myself. And I did
The thing is, my tablet was charging from zero to full more than three days and it still wasn't on 100%. And that damn thing was turned off. The charger is the same I used last week when it was (like You wrote) about three hours. The cable is the same. Everything is the same.
The only thing that happened was that my kid was running a YouTube marathon and discharged the battery completely so it shut off. After that, slow charge as hell.
And when I said it is stock, it means it's stock. No loaders no nothing.
I was hoping You know like... Clear the cache or battery stats could help. I'm not in the mood to go thru the warranty hell. Not yet...
28362836 said:
If you are having slow charging issues on your Shield K1, here are a few steps that might help you. (please note: the average complete charging time for the Shield K1 is between 2-2.5 hours under continuous operation.)
-First off, your power supply. Your Shield Tablet requires a minimum 2A 5V power supply to charge at any reasonable rate, and I suggest using a 2.5A power supply along with a high quality cable to ensure quicker charging.
-Secondly, are you using the tablet while it is charging? Keeping the screen on, playing games, watching videos, or even apps running in the background while charging can cause it to slow to a halt easily. Try turning the tablet completely off and charging it then to see if it charges significantly faster, if so, that might be the problem.
-Thirdly, the tablet's USB port. Check to see if there is any debris in the Micro USB port on the tablet. Make sure the port isn't broken by gently wiggling the USB cable to see if it's loose, or if it disconnects in certain positions. Check that the cable is plugged in all the way, it should "Click" when inserted.
-Finally, you said the tablet is running a stock ROM, but do you have any custom recovery/bootloader installed? If so, try flashing the stock bootloader and recovery, and see if that helps.
If none of this helps you, and you still have a warranty in place for your tablet, I would suggest sending it in for repair or replacement.
Click to expand...
Click to collapse
ntn_labs said:
Well, first of all I guess I'm gonna say that I'm not a newbie. If that thing to the left is of any indication, I should be able to diagnose most of those steps myself. And I did
The thing is, my tablet was charging from zero to full more than three days and it still wasn't on 100%. And that damn thing was turned off. The charger is the same I used last week when it was (like You wrote) about three hours. The cable is the same. Everything is the same.
The only thing that happened was that my kid was running a YouTube marathon and discharged the battery completely so it shut off. After that, slow charge as hell.
And when I said it is stock, it means it's stock. No loaders no nothing.
I was hoping You know like... Clear the cache or battery stats could help. I'm not in the mood to go thru the warranty hell. Not yet...
Click to expand...
Click to collapse
I'm sorry if I made you feel like a newb, I wasn't trying to, but I work with what I am given. Based upon these new factors, it is quite possible that your tablet's lithium-ion battery is suffering from over discharge or overheating. When a lithium battery is drained below a certain voltage, irreversible damage is done that typically significantly reduces the amount of energy it can store, as well as it's ability to charge. If a lithium battery is heated to over 90c the same or similar is true. Of course, the shield tablet has protections against these things, but nothing is 100%.
It may also be possible that the charging circuit in the tablet has somehow became damaged, either through an electrical surge or a 1 in a million drop scenario. If none of that is true, it's also possible that you received a defective battery to start with, and the symptoms are only showing just now. The battery could have been damaged by radiation (nuclear or magnetic). the tablet could have gotten wet. Maybe a defunct soldering job from the factory. Defective Internal Controller Circuits. Bit rot affecting the Charging firmware. Freezing temperatures affecting battery chemistry. High intensity magnetic fields messing with battery polarity.
See where I'm going with this? There are literally thousands of things that can go wrong, and it can be one of them, some of them, or none of them. Either way, I would recommend replacing the battery yourself or sending the tablet in for the warranty.
I was hoping that since Your problem was "fixed" with software that maybe I could use Your solution and maybe my problem is not HW related...
So far it looks that even on a charger (and "charging"), the device is still discharging....
Anyway, thanx for the help.