Related
Hello everybody!
I have a tranformer tf101 with + / - 6 months of use. After being stopped a few weeks (drained battery) it no longer charge and the system does not recognize the battery. When I plug the charger he starts the boot and not charge the battery. In settings with the battery status is "unknown" and a question mark on top.
I've given a factory reset and nothing. Has also has opened the tablet and unplugged and plugged the battery again. I did a test trying to turn on the device without battery and it turned on like before, like when connected (interrogation and status unknown).
The charger is apparently working, coz is charging dock.
I can not send to warranty because I live in Brazil...
Can anyone give me a light? Have researched a lot and found nothing ...
Thank you all!
Try plugging it into a USB port on your PC and leave it plugged in overnight, turned off.
Goatshocker said:
Try plugging it into a USB port on your PC and leave it plugged in overnight, turned off.
Click to expand...
Click to collapse
thanks for the reply! I've done it, one entire day on energy and other day directly to the USB... But nothing!
Well... It might be possible that the battery is busted from being discharged for so long.
Although... Does it work on battery or does it instantly die when you unplug it?
When I disconnect die instantly! But if is on dock, he stay on
Yeah sounds like the battery is busted then. It works from the dock because the dock acts as a charger for the tablet, just like the 'real' charger.
Strange how a battery with six months of use given problem.
Would if I try to put a higher charge on it (20v) and force her to reactivate might work?
Batteries only last so long, and yours sounds like it is shot.
It's very strange that yours went bad after such a short amount of time.
If the charger charges the dock but not the Transformer, then it's not the charger.
You could possibly buy a replacement battery and perform the surgery yourself.
Other than that, RMAing is the only thing that can be done.
Sent from my Transformer TF101 using Tapatalk 2
Software should not be the problem, right?
I'll try to overload the battery to see if she resurrects.
Then post the result!
thanks all for now!
mtpoth said:
Strange how a battery with six months of use given problem.
Would if I try to put a higher charge on it (20v) and force her to reactivate might work?
Click to expand...
Click to collapse
It not that strange. Its not the age per se thats the issue here - its that it was discharged for so long. Once a battery reaches a certain level, it simply wont charge anymore.
Applying 20v will just blow the fuse in the TF, or worse - fry the whole thing... Dont do that
I read somewhere the fuse blows at 17v or something.
And even if we ignore the tablet for a second, applying higher voltage to the battery will just kill the few cells still alive.
And, in worst case, it can even cause the battery to explode, possibly starting a fire and/or damage a person. Although thats not likely with such a low over-volting as 20v. Im just trying to tell you not to put more voltage on a batter than its designed to get
The only way to 'possibly' repair a dead battery is to trickle-charge it, meaning applying a low voltage over a period of time.
Hello Goatshocker!
This charge 20V must be made directly to the battery and not in TF, it really would kill him! And it would be just a "scare" the battery in about 2 seconds only, the rest of the charge would be normally done after (15v). I've done this with cell phone battery several times!
As the battery is dead it seems, think it's the only option.
But before doing so I'll take you on an assistance to make sure it is the battery.
mtpoth said:
And it would be just a "scare" the battery in about 2 seconds only, the rest of the charge would be normally done after (15v). I've done this with cell phone battery several times!
Click to expand...
Click to collapse
Ah yes, you are quite correct about that. I completely forgot about that method.
Yes, that might indeed work. But I would only do that as a last-resort, although you seem to be quite out of other alternatives
I took him in an assistance yesterday. Tomorrow should tell me the problem. Depending on the result already do the "scare" on battery.
then put the result here!
I had a similar problem. I tried connecting it to different sockets and it finaly charged.
Sent from my U20i using XDA
k.janku1 said:
I had a similar problem. I tried connecting it to different sockets and it finaly charged.
Sent from my U20i using XDA
Click to expand...
Click to collapse
whath kind of sockets you used?
Unfortunately, the overcharging did not work! The battery was completely dead, not sure how this is possible! But it's a valuable tip! The battery dock is the same tablet. So I changed them and I was working with the tablet and dock only works on energy.
Can anyone advise me a reliable site to purchase this battery? The model is ASUS C21-EP101
ty all!
Heard my tab dying from across the room so I went and got it to charge it and it won't bring up the charging animation. It also will not power on while plugged in or unplugged. It still has some remaining power because I can get it to boot into Odin mode but that's it. PC will recognize it in ODIN mode but no visible signs of charging.I am rooted on stock everything else besides CWM. I have left it on in ODIN mode unplugged to try and drain the battery 100% to see if it will charge from dead but its been 10 minutes already so I'm not sure how long that will take. No charging via original charger, PC, generic charger, Galaxy S3 charger, iPad charger, etc...
Try put your wall charger in and leave it for at least 15 mins..
then long hold the power button for at least 15 secs..
this will wake it from deep sleep.you should see the charger icon flashing then can power again and turn it on.If the answer is no sounds like needs to be repaired.ive had this before mine went into deep sleep and i thought it died but came back.
Left it plugged in for 7 hours and it won't do anything now...
EDIT I'm gonna hope it s the battery. I ordered a new one from Samsung today, we'll see when it gets here. said 10-20 days. It seemed to me that the battery life was very short anyways when I got it secondhand. I could go like 5 days or so with my transformer as opposed to a day or so with this tab.
Ok, so I got the new battery and installed it. tab booted right up with 40% battery life. I shut it off and plugged it into my PC to charge as my oem charger is broken and I'm waiting for my new one in the mail. It (finally) charged to 99%. I let it drain completely so as to calibrate the battery and now it won't charge off the PC USB again...
Hit it with a TWO AMP SAMSUNG A/C charger. ie. SGS4 (Sorry for shouting). Max charging A/C rate (from memory) it's actually 1.5 A. Edit : here it is....
https://github.com/UpInTheAir/P6800...mmit/064a3f7de67380c997e21f9a899a5d4996eb80c4
I hope you never deplete the battery to zero again.....
Although there are "protection" circuit to hopefully prevent battery damage, deleting to zero can still do this. There is no memory effect in modern device batteries, but a large (uninterrupted) charge cycle will help with calibrating your battery. But to be always on the "safe side", not from zero.
Depleting to zero might not be the only cause, but hope using a better A.C.charger (that your tab recognises and allows full input) will help you. some chargers will supply the full charge current, but the tab won't accept it.
Sent from my GT-I9500 using xda premium
SumCanadianGuy said:
Ok, so I got the new battery and installed it. tab booted right up with 40% battery life. I shut it off and plugged it into my PC to charge as my oem charger is broken and I'm waiting for my new one in the mail. It (finally) charged to 99%. I let it drain completely so as to calibrate the battery and now it won't charge off the PC USB again...
Click to expand...
Click to collapse
I found that if it goes flat it wont charge off USB, you need to charge it from the wall charger, like UpInTheAir said, not enough amp off the USB ones
I fiddled around with my charger and removed the connector that plugs into the wall and plugged a cable into it (prong was broken off my charger) and it charges fine now. Thanks for all of your time guys, looks like it should be OK now. Still waiting for a new oem charger in the mail.
Hi guys I fear my battery is byond the point of no return as tab is completely lifeless and not even recognised by pc, no charging symbol when plugged in to wall socket.
My question is there a test I can carry out before purchasing a new battery? Any help appreciated.
Sent from my GT-N8010 using xda app-developers app
gingerdude said:
Hi guys I fear my battery is byond the point of no return as tab is completely lifeless and not even recognised by pc, no charging symbol when plugged in to wall socket.
My question is there a test I can carry out before purchasing a new battery? Any help appreciated.
Sent from my GT-N8010 using xda app-developers app
Click to expand...
Click to collapse
Check your device socket and charger connections for physical damage.
Try as I suggested in my previous post, then leave it connected for a while before checking.
Sent from my GT-P6810 using xda premium
Thanks for the reply, the charger is ok as it charges my note 10.1. Someone mentioned a few posts back about opening the tab and charging the battery manually, im able to open the case but don't know how to charge the battery manually. Can anyone give me a simple explanation of how to do this.
Regards, steve
Sent from my GT-N8010 using xda app-developers app
gingerdude said:
Thanks for the reply, the charger is ok as it charges my note 10.1. Someone mentioned a few posts back about opening the tab and charging the battery manually, im able to open the case but don't know how to charge the battery manually. Can anyone give me a simple explanation of how to do this.
Regards, steve
Sent from my GT-N8010 using xda app-developers app
Click to expand...
Click to collapse
No problem, but I mentioned a TWO amp charger...... Give it a good "kick start"
So how were the sockets?
There might be some useful info here:
http://forum.xda-developers.com/showthread.php?t=2303902
Sent from my GT-P6810 using xda premium
UpInTheAir said:
No problem, but I mentioned a TWO amp charger...... Give it a good "kick start"
So how were the sockets?
There might be some useful info here:
http://forum.xda-developers.com/showthread.php?t=2303902
Sent from my GT-P6810 using xda premium
Click to expand...
Click to collapse
Thanks for the guide , I will study it when I get back from work but the internal connector looks fine. I did forget one thing that maybe important,
When I had tab open and plugged ito my note 2 wall charger ( which is 2.0 amp 5v output) the battery stayed cold but the long silver metal strip to tbe right of the battery became warm to the touch...... not sure what tbat means though.
Is the note 2 charger too weak to kick start battery?
Again thanks for your time and effort.
Sent from my GT-N8010 using xda app-developers app
gingerdude said:
Thanks for the guide , I will study it when I get back from work but the internal connector looks fine. I did forget one thing that maybe important,
When I had tab open and plugged ito my note 2 wall charger ( which is 2.0 amp 5v output) the battery stayed cold but the long silver metal strip to tbe right of the battery became warm to the touch...... not sure what tbat means though.
Is the note 2 charger too weak to kick start battery?
Again thanks for your time and effort.
Sent from my GT-N8010 using xda app-developers app
Click to expand...
Click to collapse
If the Note 2 charger works with other device, I can't imagine being a problem with it.
Sorry, haven't studied the internal hardware, so can't offer any comment on that.
If you could somehow connect up a external power supply and try charge you might have success or narrow down the problem (if it's actually the battery or part of the charging circuit). Maybe you could PM the OP of that guide for further advice. Seems he's been fairly thorough and recent experience with our device internals. But please report here your outcome, we can all learn something.
Sent from my GT-P6810 using xda premium
Adding to my previous post, there are many examples of this suggestion on the internet..........
http://www.techrepublic.com/blog/five-apps/five-tips-for-extending-lithium-ion-battery-life/
4: Avoid completely discharging lithium-ion batteries
If a lithium-ion battery is discharged below 2.5 volts per cell, a safety circuit built into the battery opens and the battery appears to be dead. The original charger will be of no use. Only battery analyzers with the boost function have a chance of recharging the battery
Click to expand...
Click to collapse
.
The cut-off level may be different, but same principle..... That's why it's been reported that a high capacity and good quality charger has been able to "kick-start" dead (sleeping) batteries into life.
I have no idea about using or obtaining / connecting "battery analyzers with the boost function" to your battery. Please refer to the previous tutorial link I gave you (which may or may not help).
Cheers,
UITA
Update on my tab. All efforts have failed so have ordered new batt and am awaiting arrival. Will post if it works or not so orhers may gain some insight if they experience similar issues.
Fingers crossed chaps.
Sent from my GT-N7100 using xda app-developers app
gingerdude said:
Update on my tab. All efforts have failed so have ordered new batt and am awaiting arrival. Will post if it works or not so orhers may gain some insight if they experience similar issues.
Fingers crossed chaps.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
I had a similar problem where I let my Tab battery drop too low. I tried various fixes, similar to the ones in this thread. Finally got it to work by letting the battery totally drain by leaving it on the Samsung logo, then opened it up, disconnect then reconnect the battery. Then charge using the wall charger. All good.
P.S. Be careful when opening the case. Refer to Youtube ''How To" vids.
Has anyone seen, or recovered from the below symbol (battery with yellow triangle and a crossed out plug)?
I left it in my luggage for a few days and when I took it out it was around 20% so I just turned it off. Later it wouldn't turn back on so I charged it overnight, over 9 hours.
I've tried holding power and volume down and I can get into Oden mode but otherwise it won't respond.
I tried the hold power button and touch screen for 30 seconds method as well, the farthest I got was the swirling Samsung screen during bootup, then it shuts off.
Afterwords it alternates between a battery charging icon and a (see attached) battery icon with a yellow triangle and a crossed out plug. Has anyone recovered from this?
I just passed one year since I purchased it and am in the middle of a long business trip where I typically depend on it so will be bummed if it's trashed. I don't mind replacing the battery but am not sure if this is the solution, and won't be able to get a battery for about two weeks so I hope there is another way. Many thanks!
izmahoby said:
Has anyone seen, or recovered from the below symbol (battery with yellow triangle and a crossed out plug)?
I left it in my luggage for a few days and when I took it out it was around 20% so I just turned it off. Later it wouldn't turn back on so I charged it overnight, over 9 hours.
I've tried holding power and volume down and I can get into Oden mode but otherwise it won't respond.
I tried the hold power button and touch screen for 30 seconds method as well, the farthest I got was the swirling Samsung screen during bootup, then it shuts off.
Afterwords it alternates between a battery charging icon and a (see attached) battery icon with a yellow triangle and a crossed out plug. Has anyone recovered from this?
I just passed one year since I purchased it and am in the middle of a long business trip where I typically depend on it so will be bummed if it's trashed. I don't mind replacing the battery but am not sure if this is the solution, and won't be able to get a battery for about two weeks so I hope there is another way. Many thanks!
Click to expand...
Click to collapse
For the sake of anyone who has a similar problem. I believe this was due to a faulty charger, which I bought off Amazon so assumed was good. I took it to Bestbuy and tried with one of the display chargers and everything worked as expected. It's a pain but at least I know the battery isn't bad.
Hello !
I've bought it today so I used it and decided to empty the battery before using it.
After it powers out, I plug it in on computer, pressed the power button and was a big empty battery with " 0%" so I let it charge and now I can't boot up..
Has anyone had the same problem ?
Thanks
Mistermatt007 said:
Hello !
I've bought it today so I used it and decided to empty the battery before using it.
After it powers out, I plug it in on computer, pressed the power button and was a big empty battery with " 0%" so I let it charge and now I can't boot up..
Has anyone had the same problem ?
Thanks
Click to expand...
Click to collapse
plug it in and hold the power button for 2-3minutes. the white led should blink a couple of times. if it does, leave the phone charging for an hour and than unplug it and power it up holding power button.
I've found this solution yesterday, but thanks !
Just a tip
By the way you shouldn't have done empty your battery the first time.
Why ? Because now in our smartphones we have Lithium-Ion battery instead of lead battery so what you did was a good thing ... but for the lead one. When you have a new laptop or smartphone it is already charged up to 40% because if it's below with the natural capacity loss of your battery you could damage the internal circuit and if it is full charged it will be as harmful as if it's not enough charged.
If you empty your battery the first time before using it you can lost 20-25% of its capacity in just one cycle
So when you have a new smartphone or laptop or anything else with a Litium battery :
- Full charge it before using it
- Discharge it until the warning message "Plug your phone ..."
- Full charge it again
And never empty your battery, keep in mind that there is a complex circuit system which always need electricity.
These informations are from a very very good pdf i read few months ago about Lithium-Ion batteries. Unfortunately it's full french but if someone is interested I can send him a PM with the link
You know what really grinds my gears? The fact that I can't turn my Atrix 2 on until it has reached 5% battery charge (after having a full discharge). Has there been some solution for this? Even though I have CM11 on my phone, I am still using the original kernel that came with stock. Would a custom kernel have a fix for this? Thanks guys, later.
Anybody else?
i think this is kinda impractical.
Your charging a battery. Battery's need power and energy you cant expect a battery to power your phone up with nothing on it. Even when plugged in from the get go it has to run thru a complete circut thats powering everything as it goes, it takes more than you think.
Just my .02 cents.
It cant be obtained by the little charging port, say we had a laptop charging port that could hand the power. I would say yeah we could power up off a/c all day.
Sowden said:
You know what really grinds my gears? The fact that I can't turn my Atrix 2 on until it has reached 5% battery charge (after having a full discharge). Has there been some solution for this? Even though I have CM11 on my phone, I am still using the original kernel that came with stock. Would a custom kernel have a fix for this? Thanks guys, later.
Click to expand...
Click to collapse
Wow, I can only imagine how hard that must be to deal with...
Yes there are solutions, heaps of people have had this problem. Use the search.
I'll just find the post I wrote on how to fix.
Sowden said:
You know what really grinds my gears? The fact that I can't turn my Atrix 2 on until it has reached 5% battery charge (after having a full discharge). Has there been some solution for this?
Click to expand...
Click to collapse
You can turn on the Atrix 2 before battery reached to 5%, yeah, you can
1. Just plug the charger in power outlet and in charging port of your Atrix 2 but do not turn on the electricity power switch, keep power supply off.
2. Now press and hold power button of your phone and immediately turn on the electricity power switch.
3. You should now see the boot screen and then you can leave the power button of your phone.
Jack Sparrow xda said:
You can turn on the Atrix 2 before battery reached to 5%, yeah, you can
1. Just plug the charger in power outlet and in charging port of your Atrix 2 but do not turn on the electricity power switch, keep power supply off.
2. Now press and hold power button of your phone and immediately turn on the electricity power switch.
3. You should now see the boot screen and then you can leave the power button of your phone.
Click to expand...
Click to collapse
Thanks Jack! I'm going to try this out tonight. Thanks for the help guys, later.
Hi all.
I've had my gear for about 2 years now.
One day, about a month ago I forgot to put it in the charger and the battery drained totally. After this small incident I can't get the watch to start anymore.
I'ts completely dead, does not respond when I try pressing/holding buttons, charging it or whatever. The charger starts blinking red after a short while.
I also tried to solder a USB cable to the connections on the motherboard but no reaction with that either..
I've tried to replace the battery the other day and success, it started!! But, only for an hour or so, now it's dead again, exactly like before.
The battery that sits in the watch right now is almost fully charged and measures 3.7 volts directly on the contact surfaces.
Anyone got an idea what to try next?
Note that it's completely dead and does NOT respond to any pressing of the buttons or charging it in any way.
Regards
Emil
If correct soldered wires...
Then charging via USB possible...
Try maybe for 30 minutes to charge via USB...
Check if device will be hot
Maybe Hardware damage...
You could check Service Manuals... Schematics:
https://forum.xda-developers.com/showpost.php?p=71759486&postcount=30
Best Regards
RenllejF said:
The battery that sits in the watch right now is almost fully charged and measures 3.7 volts directly on the contact surfaces.
Click to expand...
Click to collapse
Lithium battery fully charged are at "4.20V". "3.7V" is the nominal voltage (mean stay at 3.7V 80% of the time during discharge time).
Samsung Gear S3 Battery Issue Fix
Samsung S3 Frontier Learning Mode found for charging issue SM-R760. The solution (keep in the charger while doing resets) is to reset the watch 8 to 10 times and keep holding the power button and shutting it off about another 10 times. This is unusual however my battery went from 1%, 4%, 16% and the flashing red light stopped and went to 100% charge in 2 1/2 hrs. I will keep the forum informed any changes if this reoccurs. I definitely think the latest update blew-up the cache in watch and somehow takes multiple resets and power button presses to reset the functionality of Samsungs mistakes.
RenllejF said:
Hi all.
I've had my gear for about 2 years now.
One day, about a month ago I forgot to put it in the charger and the battery drained totally. After this small incident I can't get the watch to start anymore.
I'ts completely dead, does not respond when I try pressing/holding buttons, charging it or whatever. The charger starts blinking red after a short while.
I also tried to solder a USB cable to the connections on the motherboard but no reaction with that either..
I've tried to replace the battery the other day and success, it started!! But, only for an hour or so, now it's dead again, exactly like before.
The battery that sits in the watch right now is almost fully charged and measures 3.7 volts directly on the contact surfaces.
Anyone got an idea what to try next?
Note that it's completely dead and does NOT respond to any pressing of the buttons or charging it in any way.
Regards
Emil
Click to expand...
Click to collapse
change battery 100% but not working power on/off
I changed the battery because it was no longer charging. Recharged and gave 100% charge but now the power button does not turn on. He charges but does not care. Any suggestion?
Thank you.
tbagetti said:
I changed the battery because it was no longer charging. Recharged and gave 100% charge but now the power button does not turn on. He charges but does not care. Any suggestion?
Thank you.
Click to expand...
Click to collapse
Some wire broken when changing the batt....
tbagetti said:
I changed the battery because it was no longer charging. Recharged and gave 100% charge but now the power button does not turn on. He charges but does not care. Any suggestion?
Thank you.
Click to expand...
Click to collapse
Were you able to resolve this issue? Looks like I did the same as well.
I got the same problem. :crying:
It is supposed to have 100% battery but in about two minutes it drops to 90% and turns off.