Battery Replacement Problems - Xiaomi Mi 9 SE Questions & Answers

Hi, recently I replaced that battery of my mi9se by myself (so it is possible that I screwed up in some way), afterwards the new battery started to last incredibly less than before, having a very strange behaviour concerning its charge level: let's say the phone is charged to 100%, then in the next hour or so the battery drains normally, let's say to 80%, then it starts freefalling to 60/50% then the phone dies at 40/50%. When I connect the charger, apparently the battery is at a dead 0%, it takes very little time to recharge to 100% and the cycle continues.
Obviously this situation is not sustainable in any way, yesterday evening I was on a call with my gf, my phone died at 70%, I connected it to the charger and powered it up, as soon as it booted it was at 10%, then I disconnected it for flipping the connector and it died again... Another boot and it jumped straight to 43%. I don't know what to do...
The situation wasn't so critical at first, but I also tried to order a third battery, but the results are the same.
Another thing to note is that I also changed the charger pcb, the one onto it is soldered the usb-c connector, because it was flimsy af. I thought the cause of my problems may have been the crappy one, advertised as new but probably used, that I ordered from china. But I also tried to replace it with the old original one with no apparent changes besides the fact that now the charger doesn't remain plugged as an added bonus (that was the initial reason that led me to change it in the first place).
Software notes:
I'm currently running the latest official build of lineageOS, I could try to do a software update, but idk if it could change something...
I have root access with magisk (if some low level root operations are needed I should be able to perform them)
I was running Advanced Charging Controller (https://github.com/VR-25/acc), that I uninstalled yesterday when it came to my mind that it may be messing with the battery readings, but without success.
I should also note that I run several calibration cycles as advertised on many forums: charge to 100%, let it die by battery drain and charge it again to 100% without interruption and without powering it up. No improvements.
Sadly I study offsite and I left the old battery at home, so I have to wait till next friday if some solutions involve using the old battery.
Thanks for saving me and my phone, that, beside his battery, it still works like a charm! Switching to lineage seemed to give him another 2/3 years of life and I really wanted to keep it as long as it works.
Thank you very much for your time!

Related

Battery Charging Issues

Normally I charge my phone nightly right before I go to bed and don't plug it in at all during the day usually.
I have noticed that on days where I have to use my phone heavily and require a charge midway through the day for the next week my phones battery life is almost cut in half. If I charge it regularly at night for a week or so the battery life will go back to normal. Has anyone else noticed this behavior? I'm trying to figure out if this is an incredible issue or an android issue.
Another thing I noticed is that under the battery stats it lists that my awake time is 43 hours. Its just slightly less that the up time. This makes me think that my phone isn't going to sleep. Anyone know how to tell if my phone is sleeping or tell me which app is keeping my phone from sleeping?
Install this app
http://www.appbrain.com/app/spare-parts/com.androidapps.spare_parts
Go to partial wake. in one of the drop downs.
I checked the partial wake usage and I don't see anything out of the ordinary.
I actually have an update to the situation. As a last resort I wiped my phone and loaded Cyanogen 6.1. At first it was working awesome. Battery life was awesome but as time went on the battery life got worse and worse and now i'm back where I started.
It sure seems like there is software problem with the way the phone tracks the battery usage/charging information. As I said it seems like charging the phone midway through the day or charging the phone before the phone is dead seems to have a negative effect on the battery. I don't get it. Letting the phone completely die isn't realistic. Charging the phone when I go to bed without affecting how long the phone last after the next charge should be totally doable you would think.
Does anyone have any suggestions or insight that might help me out.
You don't say if you charge with the phone powered off or on. But sound like you're always charging with the phone turned on.
I don't think the phone charges fully while turned on (to prevent overheating maybe? ).
If you can, I'd suggest trying to charge with the phone off, at least during the nightly charge.
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Unrevoked forever
SkyRaider Sense 3.5
Radio 2.15.00.11.15
Yes I do charge my phone while its powered on (like the rest of the world). I don't know anyone that turns their phone off to charge.
My phone is paid for by my company so that they can get ahold of me in the event of a server failure or some other IT related disaster. If the phone was off I wouldn't be able to receive those important calls.
I can't believe no one else has witnessed this type of activity with the incredible. I have tried 2 phones (replaced for an unrelated reason) and 3 batteries. The behavior seems like a software glitch. I have noticed with with both AOSP and Sense Roms.
Does anyone have an in depth understanding of how the battery system works on this phone. I also have an Iphone and the battery life compared to my android phone is ridiculous. I would use the Iphone exclusively but it doesn't do everything my android phone can do. I'm hoping there is a way to fix this.
Well, now you do know someone who charges with their phone off. Me!
I'm in IT as well and on call one week per month. But we don't run a third shift, so late night calls are almost never, and they have my land line number.
Back on topic, I have experienced better battery life while charging with the phone off. Maybe you can get an external charger until a solution is found.
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Unrevoked forever
SkyRaider Sense 3.5
Radio 2.15.00.11.15
Well i'm on call 24/7 and I don't have a landline.
What do you mean by "get an external charger until a solution is found." Do you mean a second charger to charge during the day? I have plenty of chargers. Thats part of the problem. Charging in the middle of the day I believe is causing the problem. Until a solution is found? Are you saying there is in fact a problem?
Having to leave my phone plugged in all day kind of defeats the purpose of having a wireless phone don't you think?
Please...anyone have any knowledge of how the charging system works in android and specifically how it might work differently on the incredible?
trevoryour said:
What do you mean by "get an external charger until a solution is found." Do you mean a second charger to charge during the day?
Click to expand...
Click to collapse
I should have said get an extra battery and a stand-alone charger that allows you to charge the extra battery while it's disconnected from the phone.
Have you read the thread in general titled 'your battery gauge is lying to you'. (or something like that). Good read. Also there's hundreds of other threads on the inc's battery issues. Well known problem.
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Unrevoked forever
SkyRaider Sense 3.5
Radio 2.15.00.11.15
If your up time and awake time are essentially the same, you definitely have something running in the background. Try menu/settings/applications/running services and see what program might be running that shouldn't be. You can also use an app called System Panel to do a comprehensive survey. I recently had an update that resulted in the program running continuously in the background, affecting my battery life.
Some other threads have discussed that after 40+ hours of up time, their phone goes into max CPU usage all the time. Again, using the app System Panel, I confirmed this for my own phone at 45 hours. My ROM is the stock Froyo 2.2 with a custom kernel. the simple solution is to power off/power on the phone which resets the uptime.
My routine is to charge the phone with power on over night so I can use the alarm. When I get up in the morning, I power off the phone and bump charge it for about 30 minutes until the light turns green again. Then I'm usually good for about 10 - 12 hours of uptime with 3-4 hours of awake time using a 1500 battery. That time can also be reduced considerably if I'm receiving a poor 3G signal.
I did originally have a problem with a program not allowing my phone to sleep but I have since uninstalled that program and now my wake time numbers are where they should be. I think the remaining battery issues are a result of me having to charge my phone in the middle of the day as a result of the misbehaving program prior to me uninstalling it.
It almost seems like the the battery in the incredible has a memory. On a hunch I have started completely discharging my phone completely everynight before I put it on the charger. As a result my battery life as almost doubled. When I get home at night I start playing angry birds with the brightness at full until the battery gets to about 3 percent left. This obviously isn't a permanent solution but It certainly sheds some light on the root of the problem.
Prior to doing the full discharge I did a bump charge and wiped my battery stats. The battery is working great now. I wish someone would create a kernal/rom that has this issue resolved. Since these new lithium batteries aren't supposed to have a memory anymore I'm thinking it has to be something that the OS is doing with the battery stats file.
According to this article you should fully charge and discharge once every 30 or so charging cycles to resync the battery meter with the actual battery voltage. So maybe the complete discharge fixed your problems.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
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Unrevoked forever
SkyRaider Sense 3.5
Radio 2.15.00.11.15
not sure if this will help or not, but i have been running advanced task killer ever since 2.1(haven't gotten around to uninstalling before now, ha ha) and recently uninstalled it and installed watchdog task manager and my battery has increased two fold!
just my two cents worth.

[Q] Battery worn out?

Hello,
My desire, after:
an inability to restore nandroid backup
a possible corrupted sd card
a usb brick and inability to mount some nand partitions
and finally succeeding in fixing it, now using/running:
2.29.405.5 stock rooted rom
a new sd card (samsung 16GB class 6)
clockworkmod 2.5.0.7
s-off
seems that has battery issues. When it reaches below 30%, it drains a lot faster. In example few minutes ago, the battery was below 30% level and after sending a couple of sms messages the phone, without the "Connect the charger" indication shut down. Not even the battery icon was red.
What should I do?
After flashing the above ROM I ran an app called battery calibration (could this be the culprit?).
I haven't experienced such problems before the whole mess mentioned above.
Thank you for your time.
Well, it seems to me like a "classic" battery meter calibration issue.
TVTV said:
In order to calibrate the battery meter - FYI the battery itself cannot be calibrated, as Li-Ion batteries have a very low memory compared to old Ni-Cd etc. batteries - you have to go through the following procedure:
1) charge the battery to 100%;
2) let the battery discharge until the phone shuts itself down;
3) plug the wall charger into the phone, boot the phone up then charge the battery to 100% without interruptions.
If the above procedure does not yield the expected results, you can try fully charging the phone (LED showing green) with it completely turned off (after completely draining it). Again, the charging procedure should not be interrupted.
Source: personal experience - had to do this twice after installing new ROMs, as the phone was shutting down at ~14% (working like a charm now).
Regarding the matter of battery wear because of complete discharges, Li-Ion batteries do indeed have a lower cycle count than old-school batteries, but the standard charge/discharge number a Li-Ion battery can take is ~350, so you can't damage the battery pack by doing a full cycle per month (required to keep the battery meter accurate).
Good luck!
Click to expand...
Click to collapse
Did this work you mate? I have the same issue with my year old batter now... the phone shuts down @ 40% without any warning... and when I charge it, it starts from 0% and as soon as it hits the 58% mark, it jumps to 100% by itself... and i cant seem to figure out what the hell could I do to fix it... I tried calibrating the battery using the awesome method described here http://forum.cyanogenmod.com/topic/11823-battery-calibration-thread 3 times and nothing changed...
bump bump.. i really need help on this guys... :/
Sent from the infinity and beyond...
Weird that after calibration you still get that kind of issues, does this only happen on your current ROM? I have the latest CM in my desire and everything works just fine... Maybe try another ROM if calibration doesn't work to see if it's a hardware or software issue
i actually had issues with MIUI first.. the phone randomly shut down by itself but when i turned it back on, it was perfect... then i switched back to Oxygen and while everything was fine, suddenly one day the phone died at 40% :S and from that day on the phone charges to 58% and then instantly jumps to 100%... and as soon as it gets to 40% it shuts down itself... i guess i need a new battery but i wanted to see wether i can fix this one somehow so i can use it till the new one arrives...
Sent from the infinity and beyond...
same problem
i have the same problem
my phone turns off at 20% battery
calibration does not help....
and battery is not bad - it works fine
i'm sure its the problem with calibration
kshitijgandhi said:
i have the same problem
my phone turns off at 20% battery
calibration does not help....
and battery is not bad - it works fine
i'm sure its the problem with calibration
Click to expand...
Click to collapse
phone turning off at 20% is fine mate because thats the battery guards against any damage
most of the phones ( smart phones) switch off at 20% as going lower can damage the System .
It shouldnt normally..It's supposed to work fine upto 5%
Have a look at this, it worked for me (but you need a compatible kernel, most AOSP are so)
http://forum.xda-developers.com/showthread.php?t=765609

Charging and Power problems

I bought my Xperia Arc S LT18 in April 2012. Up until now, my phone has served me well. As with most modern smartphones, the battery will start to die. And I'm in the marker for a new battery, however. Last night, I noticed my phone would not charge, so I decided to just turn the phone off and go to sleep, assuming I would have at lease some battery left. I was wrong.
My phone was dead, after much time and effort, I managed to turn my phone on and wiggle the charger around enough so it could get a connection and charge. However, the charge does not hold. It will get to around about 3-5% then just drain, as if I unplugged the USB cable. I've tried everything I can think of to try and speed up the process of charging (Offline mode, Power saver underclock (currently at 456MHz) lowest screen brightness etc.) but it will only get to about 4% charge. I get the I need a new battery but this is just ridicules.
I've ran out of options, I'm going to bed soon and I'm going to leave it on charge over night.
In case it matters I have the stock battery, used many chargers and USB cables over the time I've had my phone, using the Ultimate HD custom ROM.
Not sure if this is allowed but bumping, I'm at my wits end and I really have no clue what the next move is.
I've left it on charge all day and the problem is still occurring. Should I buy a new battery?
I've just bought one of these (See attachment, under 10 posts..)
These capchas are the worst, 5 in a row I've failed/skipped ¬_¬

[Q] [SOLVED] S3 Slow Charge/Quick Drain

Hi,
Few days ago I noticed that my S3 was charging extremely slowly. I had it plugged in for 10 hours and it charged maybe 20%. I needed a full battery so I swapped the one from my battery charger (the official Samsung charger and battery), which was supposed to be at 100% according to the charger. Phone started up, battery was at 100%, and a few hours later it died.
Now, if I plug the phone in to charge it will gain a percent every 10 mins or so and it will only charge to about 54%. Doesn't matter how long I let it charge for, 54%. There was one instance where it charged to 100% but 2 mins after I unplugged the phone, it was back at 54%. The battery charger keeps charging the two batteries to what it says is full (green light on the charger), but when I put it in the phone it appears to only be between 10% and 50%.
Today, I took a battery which the charger said was at 100% and put it in my phone. Started the phone up, it said 2%. Put the same battery in my friends S3 and his phone said 98%. Back into my phone, 18%.
Things I've tried:
Leaving the phone plugged in for an extended period of time
Taking the battery out for 10 mins then putting it back in
Different chargers (some official Samsung, one BlackBerry, one no name)
Charging from USB and AC
Like I said, tried putting the phone in a different S3 and no problem with that. Only has a problem with my phone
Booted into recovery (TWRP) and it will report the same percentage as the OS
Tried to download a few different apps to check the current that was charging the phone but none of them worked for the i747m.
Also used Better Battery Stats to see if anything was draining the battery or had a partial wakelock. Nothing out of the ordinary.
When the problem first started I hadn't updated the software (CM 10.3) but was still planning on doing a restore later tonight.
I've searched xda and google but haven't come across anything that has worked. If anyone has any suggestions it would be greatly appreciated.
Thanks!
Restored back to stock last night using Kies "Firmware Upgrade and Initialisation", but that didn't help. I'm going to assume that is hardware at this point. Unfortunately, I'm out of my warranty. Right before it ended I took the phone in for repairs and they replaced the micro usb port. Could this be causing the issue? I had originally thought this but like I said, if I take the battery out and put it in another phone it sees it as being at 100%.
mcgrandlej said:
Restored back to stock last night using Kies "Firmware Upgrade and Initialisation", but that didn't help. I'm going to assume that is hardware at this point. Unfortunately, I'm out of my warranty. Right before it ended I took the phone in for repairs and they replaced the micro usb port. Could this be causing the issue? I had originally thought this but like I said, if I take the battery out and put it in another phone it sees it as being at 100%.
Click to expand...
Click to collapse
You said the phone itself will only charge the battery to what your phone reports as 54%, correct? What i didn't see was at that stage did you try it in the other phone? Just trying to determine if the phone is actually charging to 100% or not. If it will only charge a battery half way it is entirely possible the usb port repair wasn't up to par but I find it hard to believe that it would cause such dramatic drain as well. If it does in fact charge the battery fully then your problem is more than likely with the sensor responsible for report battery condition. Whether the sensor is bad or is simply in need of recalibration is the question at that point. Regardless of the actual charge of the battery if the OS is being reported to that it is below tolerance threshold it will assume the battery is dead.
dntesinfrno said:
You said the phone itself will only charge the battery to what your phone reports as 54%, correct? What i didn't see was at that stage did you try it in the other phone? Just trying to determine if the phone is actually charging to 100% or not. If it will only charge a battery half way it is entirely possible the usb port repair wasn't up to par but I find it hard to believe that it would cause such dramatic drain as well. If it does in fact charge the battery fully then your problem is more than likely with the sensor responsible for report battery condition. Whether the sensor is bad or is simply in need of recalibration is the question at that point. Regardless of the actual charge of the battery if the OS is being reported to that it is below tolerance threshold it will assume the battery is dead.
Click to expand...
Click to collapse
Yes the phone only reports a 54% charge at most. I took a battery from my battery charger which was at 100%, put it in my phone which reported 2%, then immediately into another S3 which reported 98% and stayed that way for 5 or so minutes.
Given enough time (upwards of 10 hrs) charging the battery via the phone and the phone will report 100%. But then within a couple minutes the phone will report 54% and will discharge as normal.
mcgrandlej said:
Yes the phone only reports a 54% charge at most. I took a battery from my battery charger which was at 100%, put it in my phone which reported 2%, then immediately into another S3 which reported 98% and stayed that way for 5 or so minutes.
Given enough time (upwards of 10 hrs) charging the battery via the phone and the phone will report 100%. But then within a couple minutes the phone will report 54% and will discharge as normal.
Click to expand...
Click to collapse
It sounds to me like the sensor responsible for reporting the battery condition to the OS is screwy. It could either be bad and need to be replaced, which would most likely mean a motherboard, or just needs to be calibrated. You can try resetting the battery statistics from CWM recovery if i recall, i wasn't able to find the same option in TWRP if that is what you are using. Its an outside chance but certainly worth installing CWM to give it a try over replacing the MB. Lastly, if you haven't already tried you can try flashing back to stock and see if that corrects the problem. If it is software related this should work, if not you cant pretty sure its hardware.
EDIT: I loaded up the latest CWM and the option for resetting battery stats isn't there so either they removed it or i am just remembering this from some other device or ROM i used in the distant past. In any case i found THIS thread that should assist in attempting to recalibrate the battery reporting.
dntesinfrno said:
It sounds to me like the sensor responsible for reporting the battery condition to the OS is screwy. It could either be bad and need to be replaced, which would most likely mean a motherboard, or just needs to be calibrated. You can try resetting the battery statistics from CWM recovery if i recall, i wasn't able to find the same option in TWRP if that is what you are using. Its an outside chance but certainly worth installing CWM to give it a try over replacing the MB. Lastly, if you haven't already tried you can try flashing back to stock and see if that corrects the problem. If it is software related this should work, if not you cant pretty sure its hardware.
EDIT: I loaded up the latest CWM and the option for resetting battery stats isn't there so either they removed it or i am just remembering this from some other device or ROM i used in the distant past. In any case i found THIS thread that should assist in attempting to recalibrate the battery reporting.
Click to expand...
Click to collapse
Ya I tried flashing stock previously and that didn't help. I had considered resetting the battery stats but I read a lot of forum posts that said this didn't have any affect on the battery and was automatically done whenever the battery was fully charged (or completely empty can't remember which one).
I ended up taking it in to the provider but they said I would have to send it out to Samsung and pay the cost since it was out of warranty. They suggested that it would be likely that I would just end up with a new refurb for $150. Instead I took it into a shop nearby and they repaired the motherboard for $90. Got it back earlier today and so far it's working fine.

Battery always showing 0% and shutting down when unplugged!

One fine morning my Note 10.1 2014 battery started showing as 0% and will not 'charge' (i.e., percentage will not rise). As a result, the tablet has to stay plugged-in always to use it (just like a desktop computer). The moment it is unplugged, it shuts down in 1 or 2 seconds. Tried different chargers/cables/flex cables/new battery/uninstalling/reinstalling/warming...& what not. But nothing solves the issue. I came to know that the battery is actually holding/taking in charge which is evident from the fact that the tablet runs without being plugged-in in the recovery/TWRP mode! It seems just that the android OS is not recognizing the charging. Any help would be appreciated. Thank you!
Is the battery really good? The boot menu uses a lot less current than normal boot up operation.
Otherwise you're looking at a possible mobo failure. If it has a charger pcb it could be that.
A Samsung Experience center at a Best Buy might be able to sort it out for you.
blackhawk said:
Is the battery really good? The boot menu uses a lot less current than normal boot up operation.
Otherwise you're looking at a possible mobo failure. If it has a charger pcb it could be that.
A Samsung Experience center at a Best Buy might be able to sort it out for you.
Click to expand...
Click to collapse
It is not the battery, I am pretty sure! As for the other possible causes suggested, it seems Samsung considers the product too 'old' now to look into/offer any service/parts replacement. Anyway, thanks for the quick reply!
I got the same experience. Recently installed LOS14.1 on my Samsung 2 7.0 and battery just drained and inspite charging it overnight never recovered. I think it's really the LOS 14.1. Now I cant even boot it up anymore.
tom.cruiser said:
I got the same experience. Recently installed LOS14.1 on my Samsung 2 7.0 and battery just drained and inspite charging it overnight never recovered. I think it's really the LOS 14.1. Now I cant even boot it up anymore.
Click to expand...
Click to collapse
Please do post, if you find a solution!
I strongly doubt that LOS14.1 (lineage-14.1-20210320-UNOFFICIAL-lt03lte) is the culprit as my old P605 still works with the unchanged battery.
Once charged it lasts for quite some days (usage 0.5h/day) without problems.
It's always in flight mode and mostly WLAN is shut off.
It's not that cuz of an OS it's the old battery problem....
Same thing happens to one of my cellhphones.
I charrge it to 100 % while it's turned OFF then tomorrow I turned it on and battery is at 1 %, 0 % and shuts off.
It's just old Li-Ion battery which needs replacement.
After having replaced the battery with a new one with about 50% charge the discharged P605 would only recharge to the level of the original charge. It returned to normal behaviour after charging once with the original 5v/2A charger and the original cable with the second GND contact missing. If the latter did the trick, with most cables u can't tell whether the contact is wired to GND or not.
But in the days of miniUSB, the second GND was sometimes used to put the device in charge or pc connection mode, by swapping cables.

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