Lg optimus zone 2 wont charge and shows no battery icon when battery is not present - General Questions and Answers

Hello so the problem is like when battery is in the phone phone won't do anything I've tried the battery in another phone and it worked and tried other batteries and still nothing can you help if you can

Damage battery ribbon cable or contacts, or damaged mobo.

Contacts are good and what is a mobo please tell me

Because the phone knows the battery is in there

Everything technology said:
Contacts are good and what is a mobo please tell me
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Motherboard.
It's possible the damage could be on a daughter board, like the port pcb.
Has the phone ever gotten water damage?

Not from my knowledge maybe idk

Everything technology said:
Not from my knowledge maybe idk
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Does the phone do anything when the charge cable/brick are connected?

It will briefly show the 0% message and turn off

Everything technology said:
It will briefly show the 0% message and turn off
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Try another tested cable and a known good brick.
Charge overnight.

I've done that still no life whats interesting is I put the battery into a known working phome and I charged it to 5% and I put it back into the phone with the issue and it somehow charged to 60% but showed no signs of life

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[Q] Does not recognize battery

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.
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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?
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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!
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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
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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!

[Q] Long battery charging. 6-10hours

hi.
my sensation takes 6-12 hours to charge completely..
I tried a different charger(pantech\ nokia\ motorola) and another battery.
Tried charging on original ROM, made wipe battery status in recovery
but nothing has changed
who knows more possible actions?
Get a new battery. This one you have is probably just worn out. Long charging is a common symptom of a dying battery.
Sent from your phone. You should be careful where you leave that thing.
I replaced the battery with a new one. nothing has changed.
dima3s said:
I replaced the battery with a new one. nothing has changed.
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does it take as long on the official HTC charger?
did you replace the battery with either a NEW Anker 1900, or NEW official HTC battery?
if you can answer yes to both of these questions, then it is possible that your phone may have a hardware failure...
what rom are you using?
2 yes
1)yes, on the official HTC charger it's take so long time.
If the program Battery Monitor Widget is does not lie on the official HTC charger phone max take 250mA.
most takes on the nokia charger - 350mA. and says that the phone is connected to USB
2)yes, i replace with a new official htc battery.
now is http://forum.xda-developers.com/showthread.php?t=1529941
dima3s said:
2 yes
1)yes, on the official HTC charger it's take so long time.
If the program Battery Monitor Widget is does not lie on the official HTC charger phone max take 250mA.
most takes on the nokia charger - 350mA. and says that the phone is connected to USB
2)yes, i replace with a new official htc battery.
now is http://forum.xda-developers.com/showthread.php?t=1529941
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The charger itself could be bad. Do you have another charger or can you borrow another charger for 2 hours to test?
Just about any other charger for a modern smart phone will work. They should all be 1 amp chargers. If it was bought in the last year or two it should be 1 amp. Chances are most people in your life have one.
Sent from your phone. You should be careful where you leave that thing.
i charging always with pantech original 1amp. charger.My official htc charger burned down long time ago.
i borrowed official htc charger for testing, nothing has changed
Try wiping battery stats , I had trouble getting it to charge ,it was at about 80% but had took hours to get to that , wiped battery stats and it was actually 100% charged,
Had to wipe twice and use a battery calibration app twice then switch off and gave it 30min after green light came on but eventually its working fine
Although there is still a good chance your original battery is knackerd,
,
Petesky said:
Try wiping battery stats , I had trouble getting it to charge ,it was at about 80% but had took hours to get to that , wiped battery stats and it was actually 100% charged,
Had to wipe twice and use a battery calibration app twice then switch off and gave it 30min after green light came on but eventually its working fine
Although there is still a good chance your original battery is knackerd,
,
Click to expand...
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No.
Just no.
Wiping your battery stats did not affect this. Battery stats are just a log file. They have no impact on charging or discharging.
Can I power on my phone without battery when it is conected to charger?
Skipjacks said:
No.
Just no.
Wiping your battery stats did not affect this. Battery stats are just a log file. They have no impact on charging or discharging.
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So!! you think I made it up ? can assure you my battery was all over the place till I did what I said
Petesky said:
So!! you think I made it up ? can assure you my battery was all over the place till I did what I said
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I don't think you made it up.
I am absolutely 100% certain that this is not what fixed your issue, even if you did this right at the same time the issue disappeared. Something else happened, whether you realize it or not. Guaranteed.
Sent from your phone. You should be careful where you leave that thing.
---------- Post added at 02:16 PM ---------- Previous post was at 02:14 PM ----------
dima3s said:
Can I power on my phone without battery when it is conected to charger?
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Click to collapse
I don't think so. I think the battery is part of the internal electrical circuit. It can't route power from the cord directly to the device. If the battery is missing its the same as if you cut an section out of a wire.
Sent from your phone. You should be careful where you leave that thing.
Most of the times it comes down to the rom or kernel.
Service Center wrote that replaced the....shunt
if translated into English with translate.google - (low-resistance resistor, a coil or wire)

PROBLEM- Phone battery 0% cant turn on phone or charge

Hello everyone and sry if im writting in wrong category.
Today i discharged my phone battery to 0%, and till then i cant turn on phone or charge it back.
Phone is brand new VK WORLD VK700 with 4.4 Android.
Tried charger,nothing happens.
When i try via USB i hear sound on pc for connecting and disconecting device, and that just keep repeating.
Phone dont vibrate or anything.
Phone is as i said new, i take care when connecting charger. Also tryed charger in another phone and it works.
Please help me
mr.artuka said:
Hello everyone and sry if im writting in wrong category.
Today i discharged my phone battery to 0%, and till then i cant turn on phone or charge it back.
Phone is brand new VK WORLD VK700 with 4.4 Android.
Tried charger,nothing happens.
When i try via USB i hear sound on pc for connecting and disconecting device, and that just keep repeating.
Phone dont vibrate or anything.
Phone is as i said new, i take care when connecting charger. Also tryed charger in another phone and it works.
Please help me
Click to expand...
Click to collapse
when you run the battery down to 0, there is always the risk that it will not charge again. batteries have a safety in them, if the charge gets too low, the safety trips, and the battery will not charge again.
unfortunately, you will likely have to buy a new battery.
bweN diorD said:
when you run the battery down to 0, there is always the risk that it will not charge again. batteries have a safety in them, if the charge gets too low, the safety trips, and the battery will not charge again.
unfortunately, you will likely have to buy a new battery.
Click to expand...
Click to collapse
and there is no way to revive battery?
mr.artuka said:
and there is no way to revive battery?
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Click to collapse
there is one way i have heard about, but never tried it.
basically, you need to remove the battery from the phone, then cut the end off a usb cable and expose the 2 charging wires, then touch the power wires to the proper terminals on the battery.
important note, you only want to do this for a couple minutes at a time, then let it rest for a couple minutes. prolonged charging like this could cause the battery to explode, because you dont have the safety regulation thats built into the phone.
you should only have to do this for a couple times, then the battery should be past the low safety level and will charge properly in the phone.
if you want to try it, search youtube for help, i have sen some videos on there about it before.
New battery

phone starts without battery but not with

If I directly plug in the phone to the charger and start it (without the battery cable connected) it powers on fine into the OS and I can use the phone as normal (shows 0% battery) but ...
if I plug in the battery - it doesn't charge, no battery icon, phone appears dead. I even replaced it with a new high capacity battery off of ebay but it still acts the same.
Sometimes, when I charge the dead phone it flashes red for a minute and then nothing. I've charged for several hours but nothing.
Where should I go from here?
Try Replacing the motherboard
BlackVader said:
Try Replacing the motherboard
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Click to collapse
works fine without the battery, powers on and the phone is usable
There seems to be something wrong with the battery connectors , check them up maybe you have something broken if you said you tried with another battery and still act the same ..
Sent from my Nexus 5 using XDA-Developers mobile app
BlackVader said:
There seems to be something wrong with the battery connectors , check them up maybe you have something broken if you said you tried with another battery and still act the same ..
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Click to collapse
How do I check the battery connectors?

Question discharging the battery

after discharging the battery to zero, the phone does not turn on. charged for many hours. the computer does not detect the phone. help me please. what should I do?
You shouldn't discharge the battery to zero, it's a myth
mike00y said:
You shouldn't discharge the battery to zero, it's a myth
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Well that's not the solution
Convertor said:
after discharging the battery to zero, the phone does not turn on. charged for many hours. the computer does not detect the phone. help me please. what should I do?
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Try Another Charger
you have to jump start your battery if you dont even get any feedback from EDL or fastboot. just plug in c type connector, then repeatedly plug in and out your charging adapter. this once brought back my old xperia xa ultra from being completely dead to back to life. also dont drain your battery past %15-20.
gsser said:
you have to jump start your battery if you dont even get any feedback from EDL or fastboot. just plug in c type connector, then repeatedly plug in and out your charging adapter. this once brought back my old xperia xa ultra from being completely dead to back to life. also dont drain your battery past %15-20.
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Click to collapse
unfortunately it didn't help. Today I will go to the service center. the topic can be closed, no solution has been found.
Convertor said:
unfortunately it didn't help. Today I will go to the service center. the topic can be closed, no solution has been found.
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Click to collapse
I'd like to know your findings from the service center or if you were able to revive your phone. Same thing happened to me. new phone arrived and the battery was drained. LED Lights flicker when plugged in but won't turn on.
the phone is expected to recharge even from a flat 0 battery.
Convertor said:
unfortunately it didn't help. Today I will go to the service center. the topic can be closed, no solution has been found.
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Click to collapse
Hi, of course the same thing happened to me. I didn't notice the battery and it ran out to zero. Then I can't charge the phone anymore. I tried different cables, different chargers and nothing. After connecting the charger, only the LED flashes and that's it. I left the phone on the charger for a few hours and something didn't change. Don't have new information on how you ended up in the service? thx
This thing worries me a lot!
Also because I have seen that it is a very common problem among Poco phones.
Even with a lot of attention it can happen, inadvertently ... at that point what do you do?
What if it happens out of warranty?
Is it possible that there is no solution?
Has anybody found a solution to this problem? Which I think is a software/coding problem.
I had the exact same issue in April (phone bought in January) where I didn't notice that the battery had gone flat and plugged the charger in and left it to charge, only it didn't.
Now I was in the position where my son also has the same phone so to diagnose the issue, i took mine apart and removed the charging port and swapped it with his. No change, his phone charged mine didn't.
I then swapped the batteries, his battery would charge in my phone and weirdly my battery would charge from '0' in his phone. So the charging ports and cables were now known to be fine and working, but also the batteries were both able to be charged so it seems it is a software issue.
I now have a new battery on order because he's not got his phone any more

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