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[Q] charging issues, charges extremely long, stops charging randomly

Hey I was wondering if something is wrong with my device.
I am encountering weird things regarding recharging the device in reliability charging up.
So i am using the original charger which came with the phone, the phone is just like 3 month old i didnt notice anything like that earlier.
So when i am charging the device, sometimes it stops charging, Today I encountered it charging to like 56% and afterwards no more charging so when i got up, my phone was 14% left even when plugged in.
I encountered it several times recently that it stuck recharging at around 50-ish or 70-ish %.
charging usually takes up reasonably long. About 10% an hour. In Settings -> Battery it sometimes it displays USB even when it's charging via AC.
I am not running any fancy apps which drain the phone or clock cpu.
I am running 4.1.2 I9305XXBLL3 Rooted.
Anyone have any suggestion?

endrancer said:
Hey I was wondering if something is wrong with my device.
I am encountering weird things regarding recharging the device in reliability charging up.
So i am using the original charger which came with the phone, the phone is just like 3 month old i didnt notice anything like that earlier.
So when i am charging the device, sometimes it stops charging, Today I encountered it charging to like 56% and afterwards no more charging so when i got up, my phone was 14% left even when plugged in.
I encountered it several times recently that it stuck recharging at around 50-ish or 70-ish %.
charging usually takes up reasonably long. About 10% an hour. In Settings -> Battery it sometimes it displays USB even when it's charging via AC.
I am not running any fancy apps which drain the phone or clock cpu.
I am running 4.1.2 I9305XXBLL3 Rooted.
Anyone have any suggestion?
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Click to collapse
Samsung charger that come with the box really charge slow because it only supplies 1Amp.
But for your case seems different. Before checking the software side... have you checked if it's the charger or the cable itself has the problem? Try using other charger.

do you think a nexus 7 charger works fine w/o doing any (more) damage?

Many times it's because of dust and dirt collecting inside usb port. Clean it with compressed air or small brush and try again.
Sent from my GT-I9305 using xda app-developers app

i am aware that dirt might be the problem, but i've took my torch and put some light into the dark usb port to see if there's any dirt but everything looked quite clean to me. I don't have compressed air with me atm do you think a manual air blower used to clean dslr sensors can also do the job?
any other suggestions if the charger and usb port ( dirty ) is not the case?

Use toothbrush and tiny bit of alcohol ( can be after shave) on it to clean port. Do it when phone it's switched off. It's worth to try.
Did you try different charger?? This can be main problem. Many faulty chargers this days.....
Sent from my GT-I9305 using xda app-developers app

i have been trying out the nexus 7 charger. it seems to be a bit faster but not as fast as i am used to be on galaxy s2 ... i used the air blower and a tiny bit of dust came out but not quite much, i will see how it performs.

endrancer said:
do you think a nexus 7 charger works fine w/o doing any (more) damage?
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Click to collapse
Check the output voltage if same, a bit higher ampere would be fine just not too high, and not voltage.
Sent from my GT-I9305 using xda premium

r_i_x said:
Samsung charger that come with the box really charge slow because it only supplies 1Amp.
But for your case seems different. Before checking the software side... have you checked if it's the charger or the cable itself has the problem? Try using other charger.
Click to expand...
Click to collapse
Samsung charger provides 1000mah because that's the stock charging setting for the SGS3. You'd only need a different charger, like a N7 one if you change the settings to above 1000mah.
OP use current widget to see what current your phone is charging at. It should be 999mah from the wall charger, then you can change chargers and see whether it's the charger or your phone with the problem.

bigmo7 said:
Samsung charger provides 1000mah because that's the stock charging setting for the SGS3. You'd only need a different charger, like a N7 one if you change the settings to above 1000mah.
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It's what I said

charging very slow!

help,my note now charges very slow 4-5hrs without using.
it depletes if im using it while charging.
could change rom,kernel be a fix?
thanks

Heading for a new battery me thinks.
Sent from my GT-N7000 using XDA Premium 4 mobile app

Are you using your stock charger? If not, how many A does your charger have?

Abagnale said:
Are you using your stock charger? If not, how many A does your charger have?
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Click to collapse
i just bought an extra battery.lets see how it goes.
i noticed my old battery had a small bump in the middle seems bloated. hmm
i remembered last time i used xperia s charger trice,it has 1.5kA it realy charge fast. i think that caused the problem?
when my sister charge her xperia s, the charger just explode.. and she scolded me why am i using her charger.
im using my old charger which is 700ma but it charge just fine. lately when i use the xperia s charger and went back to my old one,it was acting strange. it charges really slow and if i use the phone,it depletes even when charging.
im going to flash another rom,and see if its rom related or the battery isue.
thanks for replying.

ok,im on with my new battery but still depletes while im using it. im just browsing. on the widget it say im currently charging with 1000ma. wierd, dont know how to solve this.

[SYMPTOMS I HAD] it would charge very slowly, if the screen is on, it would actually discharge. When the phone was off, it would slowly charge (i.e. >5 hours to full charge). and it would discharge very quickly (i.e. 1% per 2~3 mins). When the phone was off, it would charge sometimes and sometimes not. Figured that when the phone was off, you really are negating much of the software influences so this could be a hardware issue, however, wanted to make sure before going down the hardware route.
Did some research, searched the forums and searched some more.
I had tried 5 different chargers, 3 different USB cables and had bought a replacement battery.
Steps taken:
1. Cleaned with thick paper - no change
2. Cleaned with thick paper & rubbing alcohol - no change
3. Cleared with Compressed gas - no change (on first charge, there was a change but then back to normal)
4. Attempted to clean with vacuum (with finer nozzle) - no change
5. Used charging apps from playstore - didn't show charging details - considered the port was faulty
6. Tried to find default references for charging as mentioned in one of the forums - unable to find it
7. Found a replacement USB port charger board and replaced it - working fine
So it could be the actual port is faulty. If you symptoms match, it could be time to take it into the service centre, restoring to stock first of course. The note I am using had slow charging for about 2 months prior to really slow charging.

i had change the usb port and its back to normal. 2hrs at least and its full.

Fingers crossed, thats all you need.

Slow Charging - Max Charging Amps?

So I recently picked up a T813 to replaced my Nexus 7 (2013), I've had a few weeks now, and as with all my devices I slow charge it. This tablet generally took ~30 hours or so to charge at 0.35-0.45 amps, but I didn't think anything of it. This week I went on a trip and plugged it into a charger that can output anywhere from 0.8 to 1.8 amps depending on the port you are using (all the current ratings I'm listing are what I've measured, not what the devices are rated). My tablet said "Charging" at first, but then once it hit 75% all it would say is "Charging Slowly" no matter what. Now that's all it will say. Sometimes after a restart it will say "Charging" briefly, but then it goes back to "Charging slowly". The charger I was trying to use was an Anker product, so not a complete "no-name" charger.
I did some more checking and it appears my tablet has an upper charge limit of 1.5 amps using even the factory charger which is rated 2.0 amps. That same factory charger plugged into my Nexus 5X outputs 1.88 amps. Anything less than 1.5 amps, my tablet behaves as the rest of the devices. If I plug the tablet into a power source that current is limited to 0.5 amp, using the same cable, using an Honor 5X, and the Tab S2, both draw the ~0.5 amp.
Now the "Charging" and "Charging Slowly" messages were on Lineage, however since I have returned home, I and done all the subsequent testing, I have used Odin to return completely back to the factory Samsung software. Right now I have some videos playing to run the battery down, and am planning to trying to charge the battery all the way up using the factory charger to see how long it takes. If it also takes 30 hours, I'm going to assume it has to be a hardware problem?
Anyone else have any ideas?

My T813 arrived with Nougat on it. The only Odin firmware I could find that would successfully flash was a Marshmallow so I let videos play overnight (which did actually play overnight surprisingly!) to fully drain the battery. This morning I started charging the battery with the OEM charger, and from fully dead to 100% it took roughly 4.5 hours. So I would say this is normal from what I've read. I would say this rules out any hardware issue.
My next test will be to find a flashable Nougat OEM image as it doesn't want to update itself. Then see how it performs then. I'm starting to wonder if Samsung changed something in the firmware to make it charge slower on purpose just to prevent any "Note" like issues from happening? Finally then I'll have to also go back to Lineage, as I don't plan on using it at all with the stock software, as it's quite unbearable. There's a reason I only buy devices that Lineage is available for.

So after updating to Nougat, and letting it update, then fully draining the battery again, which again took overnight, it seems to charge even faster. This time from 0-100% taking just under 4 hours using the OEM charger, at roughly 3 hours 45 minutes.
I'll put Lineage back on it tonight, however this definitely calms my concern that I had a hardware issue. It's definitely fine. I'll see what kind of charge time I get with Lineage.

It charges with ~1600mah

I've had slow charging issue twice. I sent it in the first time and Samsung sent me a slow charger (not fast charger) to use. Worked fine for about 10 months. Once I update to Nougat, my charging became slow again.
Seems like many people have slow charging issues with this tablet. I have the Verizon tab s2 9.7

Extreemator said:
It charges with ~1600mah
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Click to collapse
Yeah this is what I've noticed. This seems to be about the upper boundary. Despite being shipped with a 2 amp charger. I did reinstall Linage, and it charges fine with the OEM charger, so it's not a bug on their end, or a hardware problem for me. With LOS and the OEM charge it's still ~4 hours to charge with is what I would expect roughly based on my other tests, even though LOS still reports charging slowly.
I think my problem early with the 30+ hours of charge time was related to the hub I was charging with. I have been having issues where I would wake up and my phone wouldn't be charged at all. Most nights it would though, so I figured my cable was starting to go bad. Swapped the cable and same issue. Measured the current on the ports, and it was far below what it should be on a USB port, the charge ports were getting 0.18-0.2 amps, the regular ports were 0.2-0.3 amps (not sure why the regular ports were getting more). Then I noticed the power adapter was not plugged in all the way into the wall. After plugging it in all the way the current on those ports returned to normal. This honestly doesn't make any sense to me, so it maybe time to replace that hub. Either way, I know the problem is not the tablet, which calms my fears about it, since it was the new piece of hardware.

Fast charging is gone

Anyone know what I have to do to get fast charging back? I have the option enabled in settings. The cord is good, my wife's phone fast charges just fine with it. I've soft reset the phone, cleared cache, and just about any other option I could find on the web. So weird cuz it was working fine not too long ago but just noticed now that I can't get it to work.

Try cleaning the usb port on your phone. i had the same problem, just cleaned it out with air.

Thanks but been tried that. I work in Audio/video so that was one of the first things I tried.

TokedUp said:
Anyone know what I have to do to get fast charging back? I have the option enabled in settings. The cord is good, my wife's phone fast charges just fine with it. I've soft reset the phone, cleared cache, and just about any other option I could find on the web. So weird cuz it was working fine not too long ago but just noticed now that I can't get it to work.
Click to expand...
Click to collapse
Is her phone the same model as your phone?

She has S9+

TokedUp said:
She has S9+
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Click to collapse
Are you able to mount the phone as storage on a computer, or able to access a USB with the OTG adapter? The charge port on this phone isn't the most robust and a few people have had problems with then failing.

No issues with any other stuff except fast charging. The phone charges fine but just say fast charging and takes forever. It's so weird cuz in my car my phone would barely charge when hooked up to USB in console, but then soon as I lost fast charging at home it started fast charging in the car. I just don't get it

TokedUp said:
No issues with any other stuff except fast charging. The phone charges fine but just say fast charging and takes forever. It's so weird cuz in my car my phone would barely charge when hooked up to USB in console, but then soon as I lost fast charging at home it started fast charging in the car. I just don't get it
Click to expand...
Click to collapse
Well luckily normal charging and USB still works so it's not the worst. At least your battery will last a little longer now?

My advice would be install an app like accubattery
https://play.google.com/store/apps/details?id=com.digibites.accubattery
It will show current when charging.
Fast charging being displayed by Android only seems to indicate fast charging is enabled rather than actually occurring.
I find when fast charging is occurring with standard Samsung charger, but not original cable it will show approximately 2800 mA.
It did seem to be below this rate a few months ago when ambient temperatures were higher and battery temp got above 36 °C
I also bought an unbranded charger cable that has an led that illuminates bright when high current charging and dimmer when charging at lower rates.

Probably defective . I've read issues on here about fast charging no longer working and it had to be repaired by samsung.
Sent from my SM-G975U using Tapatalk

Ive had this problem with all my samsung phones since galaxy s8. I dont know why after some months the phone loses the ability to fast charge (it happened to my s8, note 8 and currently note 9)
Enviado desde mi SM-N960U mediante Tapatalk

I finally replaced the usb-c port
I had the issue that fast charging was gone and it charged very slow sometimes. I did many searches and did everything I could do. none changed anything. finally I went to Samsung and they replaced the port.

amirfathi said:
I had the issue that fast charging was gone and it charged very slow sometimes. I did many searches and did everything I could do. none changed anything. finally I went to Samsung and they replaced the port.
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Click to collapse
Was ur phone under warranty still?

i had this essue
https://forum.xda-developers.com/galaxy-note-9/help/fast-charging-issue-t3939268
it is not a software essue you have to repair it.

Major Tokage said:
Was ur phone under warranty still?
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Click to collapse
It was. Now I am a bit skeptical about this USB-C port thing. I take good care of my gears. Especially this one that cost me an arm and a leg. I want to do a survey if all the manufacturers' type-c port is prone to get damaged like this easy!

I would take your device to a Samsung Service Centre and let them take a look at it.

Fast charging issue

So my note 9 (snapdragon) is never using fast charging and even if i manage to get it to give me fast charging it gives 1 hour 39 minutes to charge and takes 3 hours, when i charge by cable charging with disabling the fast charging setting it charges in 2 hours 10 minutes while it is cable charging not giving me fast, with the setting enabled it charges in 1 hour 59 minutes.
One side of the type-c never gives fast charging and the other side writes fast charging for 4-5 seconds then switch to cable charging and rarely doesn't switch but the charging time is 3 hours as i mentioned.
I tried everything possible other than trying to flash another software it is with the stock but unlocked.
I cleaned the socket, used 10 different chargers with different cables, wiped cache and tried safe mode and more.
Sorry for making it a long post but this problem is driving me crazy and i want to know can it be software issue not hardware because the phone is used for 2 months and the socket can't be cleaner, and if i flash the stock rom again will it be locked by T-mobile and i would need to unlock it again?
Thanks alot.

First of all, try to change the cable that 98% of the time is the problem when having these types of issues . Then consider the fact that the battery's temp influences the time needed for charging so if it's hot, software will decrease power in charging so that will give a longer time to charge. Even using the phone while charging or leaving apps in background will extend time for charging.

I have posted this so many times.
Samsung uses cheap USBc connectors that short out. Once you lose FC the only way to get it back is so get a new USBc installed by Samsung or a third party. This happened to me about 4 months after I got phone. I never fixed but I will never buy Sammy again. Its not your cables, its not the power cube, its the connector on the actual phone.

TokedUp said:
I have posted this so many times.
Samsung uses cheap USBc connectors that short out. Once you lose FC the only way to get it back is so get a new USBc installed by Samsung or a third party. This happened to me about 4 months after I got phone. I never fixed but I will never buy Sammy again. Its not your cables, its not the power cube, its the connector on the actual phone.
Click to expand...
Click to collapse
In every case, better Sammy's phone USB c connector then iPhones phone lightning connector because after a year you can't even charge the phone at all for having intermittent false contacts when you plug in the cable for the phones connector going bad....

TokedUp said:
I have posted this so many times.
Samsung uses cheap USBc connectors that short out. Once you lose FC the only way to get it back is so get a new USBc installed by Samsung or a third party. This happened to me about 4 months after I got phone. I never fixed but I will never buy Sammy again. Its not your cables, its not the power cube, its the connector on the actual phone.
Click to expand...
Click to collapse
It's possible the the USB C connection is faulty, it's also possible it's a faulty charger cable or even a faulty charger .
Eliminate one by one, buy a good USB C cable to check if that cures the problem, it often does.
Whilst as Tokedup says it may be the usb socket in the phone as according to his post he didn't fix the problem it's not possible to conclusively determine the cause.
It's unlikely to be caused by software, but high ambient or high battery temperature will lead to charge rate reduction
Maybe try an app like accubattery, this will show the charge rate in mA.
With a genuine charger and cable fast charge will reach a maximum of 2800mA
https://play.google.com/store/apps/details?id=com.digibites.accubattery

joedellosso69 said:
First of all, try to change the cable that 98% of the time is the problem when having these types of issues . Then consider the fact that the battery's temp influences the time needed for charging so if it's hot, software will decrease power in charging so that will give a longer time to charge. Even using the phone while charging or leaving apps in background will extend time for charging.
Click to expand...
Click to collapse
Well i tried everything you said with no success.
The problem is the phone isn't fast charging at all.
I believe it's the phone socket actually.
Thanks anyways

TokedUp said:
I have posted this so many times.
Samsung uses cheap USBc connectors that short out. Once you lose FC the only way to get it back is so get a new USBc installed by Samsung or a third party. This happened to me about 4 months after I got phone. I never fixed but I will never buy Sammy again. Its not your cables, its not the power cube, its the connector on the actual phone.
Click to expand...
Click to collapse
I think you are right but i didn't want to believe it because i am not going to change it and risk opening my phone i can try and live with that.
Thanks

paul_59 said:
It's possible the the USB C connection is faulty, it's also possible it's a faulty charger cable or even a faulty charger .
Eliminate one by one, buy a good USB C cable to check if that cures the problem, it often does.
Whilst as Tokedup says it may be the usb socket in the phone as according to his post he didn't fix the problem it's not possible to conclusively determine the cause.
It's unlikely to be caused by software, but high ambient or high battery temperature will lead to charge rate reduction
Maybe try an app like accubattery, this will show the charge rate in mA.
With a genuine charger and cable fast charge will reach a maximum of 2800mA
https://play.google.com/store/apps/details?id=com.digibites.accubattery
Click to expand...
Click to collapse
I already tried alot of cables and chargers so i am sure it's not one of them and now i am nearly certain it's the socket since you said it's unlikely to be a software issue, but i really wanted to know what could've caused it because i am sure i didn't do anything wrong.
I have been monitoring accubattery for a month now everytime i charge the phone. The mA is always between 800-1200mA and the phone takes nearly 2 hours to charge.
Thanks alot mate

just to be sure that it is not software related, remove all the battery optimization related 3rd party apps. clear cache and test the phone with stock usb cable and charger that came with the phone. what i had experience is that my note 9 SM-960F is sencitive to charger. if i use a third party fast charger or cable, it give me some sort of trouble like overheating or slow charging. so make sure you are using stock charger and cable that came with phone.

Munawar Mehmood said:
just to be sure that it is not software related, remove all the battery optimization related 3rd party apps. clear cache and test the phone with stock usb cable and charger that came with the phone. what i had experience is that my note 9 SM-960F is sencitive to charger. if i use a third party fast charger or cable, it give me some sort of trouble like overheating or slow charging. so make sure you are using stock charger and cable that came with phone.
Click to expand...
Click to collapse
I wiped data factory reset and cleared cache and tried safe mode so i don't think it's any of that.
the last try will be flashing the stock rom again but i am hesitant because i am afraid the phone will be locked again by T-mobile and i won't be able to unlock it
Thanks

Why not get a Samsung wireless quick-charger and try it?

A wireless charger will not be faster than cable charge but I would get one so you don't wear out that port to where it doesn't interface with a computer if needed in the future. Btw all my new phones thats the first thing I turn off is fast charging it degrades battery more over time.

TokedUp said:
I have posted this so many times.
Samsung uses cheap USBc connectors that short out. Once you lose FC the only way to get it back is so get a new USBc installed by Samsung or a third party. This happened to me about 4 months after I got phone. I never fixed but I will never buy Sammy again. Its not your cables, its not the power cube, its the connector on the actual phone.
Click to expand...
Click to collapse
When I purchased my note 9 I did a post somewhere where I said the weakest link in this phone is the Charging port. And so right from the first week I got a wireless charging pad.
Also during the rainy season I keeps saying there is moisture in the port. Basiclly god help you if you live in a place with high humidity.
Like you this is the last Samsung Note I will buy in this life. My Audio packed up after the update. I suspect the over heating caused this. And their support is outsourced in India so they don't give a hoot about your issues.
To the OP.
Try a wireless charger if that fast charges Then you know its a port issue. If that also does not fast charge then its a chip / board issue.
I predict all note 9 users are going to see more and more problems as the over heating causes components to start to fail.
You can get a new USB port with flex cable for like 4$ on ali express go for it.