Database Develop

[Q] CM (and others?) battery meter complete screw-up

My battery never charges above ~76% when plugged in. After rebooting however, it is very much at 100% and lasts for a good amount of time. This is not necessarily a question, but I wonder if others are experiencing this too and if there is a fix? Read below.
I noticed that my battery life got very bad after installing custom roms. I also found out that this happened because I sometimes kept the phone plugged in while flashing, something that totally screws up the battery reading. So, I followed this guide to calibrate my battery and it worked.
Now, whenever the phone is plugged in it NEVER goes to 100% when charging. Maybe 80% if leaving it for a while (10 hours overnight). I'm worried about frying the battery. Is there a fix?

It is only a matter of presentation. It actually doesn't mean your batt is broken. Plug it and charge it overnight. Then discharge only for few percent and plug it back in. It should go to 100%.
Sent from my HTC Legend

Thanks, I'll give it a try.
What I'm concerned about is if the phone "thinks" the battery isn't recharged and keeps squeezing juice into it when in fact it is full (which a reboot will show)? That's not good for the battery. It should go into trickle charge after reaching 100%..

The process described in the desire forum is also known as formatting the battery. In fact most of battery manufacturers (lithium battery manufacturers) recommend doing this in a slightly different way:
Before first use:
1.) Before powering the device on, plug it in and let it charge until the LED is green (fully charged)
2.) Then take the battery out of the device and wait an hour (to make sure all the chemical processes in the battery are as idle as possible)
3.) Then plug it back in, while still off and let it charge untill green LED
4.) use the device....
You can practice this slightly modified with first step being:
Discharge the battery (by normal use)until only few percent are left (1 - 5 % are OK)
I've done these steps with my Mugen extended battery and I was getting around 4 - 5 days on Legend, now I'm getting 2 - 3 days on Desire S, but the ROM isn't very optimized yet, I believe it will be better in time...

Just one thing... Why is this in Development!?

No Idea.....
can mods move this?

BlaY0 said:
It is only a matter of presentation. It actually doesn't mean your batt is broken. Plug it and charge it overnight. Then discharge only for few percent and plug it back in. It should go to 100%.
Sent from my HTC Legend
Click to expand...
Click to collapse
sz1a did this solve your problem? Have the same problem with every firmware i've tried....

peddalion said:
sz1a did this solve your problem? Have the same problem with every firmware i've tried....
Click to expand...
Click to collapse
Definitely did not solve it but at least the battery performance is ok. It just stays at 78% for a few hours drops from there. Very weird but as long as the battery doesn't get broken I guess it's ok.

Do you have some 3rd party battery installed in your Legend? I have one 1,5 Ah in mine and it is acting the same way. It doesn't bother me too much coz it was cheap... it lasts 48 hrs with data always on and moderate usage. I noticed this that when I charge it overnight and it reaches 80%, unplugging it stays at 80% for several hrs and just after it starts dropping if I plug it again, meter reaches 100%. It's weird but as I said I can live with that

I've got exactly the same issue with stock 2.2 ROM. I've never rooted or CM my phone; I was wondering if CM would do it, but doesn't look like it.
android forums /htc-legend/265545-battery-doesnt-fully-charge.html
(sorry, I can't post links; maybe an admin can fix the link for me?
This seems to indicate it's a phone hardware fault and requires a new Legend to fix! My big worry is, as stated, that the charging light never goes green; therefore is pumping lots of power into a potentially full battery.

[Q] Xperia TX Battery Problem - Using 2 Original Battery

Hi guys, I just want to share with you a problem I encountered using 2 original Sony Battery BA900. I have 2 batteries, both original. Both of them fully charged, 1 battery inserted into my phone and 1 as back-up. After my battery discharged up to 10, 20 or 30%, I will try to change to my back up battery. After changing it, the phone dispalys the same battery charge level with my first one, for example before I removed the first battery, the charge level is 10%, changing into a new one that is fully charged to 100%,it will also show 10%. The battery will continue to drain up to 1% and will stay there for several hours. So that means, the battery is really fully charged but the battery icon shows a wrong level.
However using another local battery (not original from Sony), I will not encounter this problem, meaning after the original battery drained up to 10%, I will change to a locally made battery that is fully charged, it will show 100% on the battery level.
Note that any ROM that I use, Stock or Custom ROMS available for TX, I will encounter the same problem using 2 original batteries.
Is there anybody who encountered the same problem with me? Any suggestions to fix this?
Thanks

I see someone have same issue like this.they call it normal
the way to solve that when you change new battery you have to wait 20-30 sec then put the new battery on.

paullu said:
I see someone have same issue like this.they call it normal
the way to solve that when you change new battery you have to wait 20-30 sec then put the new battery on.
Click to expand...
Click to collapse
I tried to do it, but still I'm observing the same problem. I even waited for few minutes before I put the new battery inside my phone. The only way it can show the normal readings of the battery level is when I charge it for a few minutes, if the battery level of the previous battery on my phone is 10%, changing it to a fully charged new battery the phone will also show 10%, after charging it for a few minutes, it will suddenly jump to 100%.
I hope Sony can come up with the fix with this because the unbranded batteries can work really well.
Thanks.

I have the same problem with Mugen Power Battery. I think that the battery meter is not working fine and I hope that Sony can fix it.

my xperia x10 had the same problem a couple of times the battery off instead of a hard way of inserting normal if you want to try

matti342001 said:
my xperia x10 had the same problem a couple of times the battery off instead of a hard way of inserting normal if you want to try
Click to expand...
Click to collapse
What do you mean? Can you explain it further? Thanks.

Battery dropping from 12% to 0% in a few seconds

My battery is dropping from 12% to 0% in a few seconds and phone shuts down.
See attached screenshots from battery graph and better battery stats.
During normal use until 13% discharge is normal.
Any help is appreciated.
Thanks

I would like to see some feedback about this, as well. I'm experiencing the same thing.

junta_mpb said:
I would like to see some feedback about this, as well. I'm experiencing the same thing.
Click to expand...
Click to collapse
I have google around but no real solution.
I have tried calibrating battry, let's see what happens

Battery calibration is something you should do!
If it doesn't work try different FTF Files for your device or even use PC Companion to repair your device...
If you could try custom roms it would be better because if the problem still remains it means there is a hardware problem(Probably battery replacement will be needed).

comeon, no one with a real good idea about source of the problem and its solution?

thegios said:
comeon, no one with a real good idea about source of the problem and its solution?
Click to expand...
Click to collapse
use your phone untill it turns off - boot into recovey with power then volume up
charge your battery while on recovery twrp from 0 to 100 ( leave it just to charge it may take up to 5 hours )
test again if worked fine on discharge from 12 to 0 so u have a kernel problem
you may change the kernel or try another rom

mimotata said:
use your phone untill it turns off - boot into recovey with power then volume up
charge your battery while on recovery twrp from 0 to 100 ( leave it just to charge it may take up to 5 hours )
test again if worked fine on discharge from 12 to 0 so u have a kernel problem
you may change the kernel or try another rom
Click to expand...
Click to collapse
Ok, I have tried all possible methods
- using an app called BatteryCalibration
- using the charging mode suggested above
- deleting manually the battery stats file
Phone still goes from 12% to 0% in seconds and shuts down.
I DO NOT BELIEVE IT IS A KERNEL PROBLEM because I have the original .157 sony ROM, just rooted with a few crapware disabled
I DO NOT BELIEVE IT IS A BATTERY PROBLEM because I have tried the following: when phone goes from 12% to 0% and shuts off, I plug it in, wait that it charges for say 10 minutes, turn it on, battery is at 4%, unplug it, phone runs for at least 40 minutes (it should shut down).
So it really seems to be a bad reading...

Hmm, i have same problem with battery , when battery is 32-35%, screen off dropping to 22-25% in some minute, but wheni test with screen on 32-35%, don't have problem
It difficult question to answer

bibica said:
Hmm, i have same problem with battery , when battery is 32-35%, screen off dropping to 22-25% in some minute, but wheni test with screen on 32-35%, don't have problem
It difficult question to answer
Click to expand...
Click to collapse
It is not the same problem.
My problem is that when the phone (after several hours, also of intensive use) reaches 12% in a few seconds it drops to 11% then suddenly to 0% and it shuts down.
Then, If I charge it for 10 minutes, unplug and turn it on, battery is at 4% and lasts for another hour: this should prove the problem is not the battery but its reading.
And deleting batter stats is useless, besides this being a myth...

thegios said:
My battery is dropping from 12% to 0% in a few seconds and phone shuts down.
See attached screenshots from battery graph and better battery stats.
During normal use until 13% discharge is normal.
Any help is appreciated.
Thanks
Click to expand...
Click to collapse
same here
first screenshot is the normal of the battery
second screenshot when it starts to do the problem not a big problem
third pic is the problem big problem ( fast drain and fast charge )
also the fourth pic is how my battery last from 100 to 15 about 6 hours hardcore usage and after that 2 or 3 mins max 0 :/
i dont have this problem on sony stock rom 108 or 157 seems fine no fast drain or fast charge just on any other rom that problem happenes
iam now on cm11 phone model c6902

mimotata said:
same here
first screenshot is the normal of the battery
second screenshot when it starts to do the problem not a big problem
third pic is the problem big problem ( fast drain and fast charge )
also the fourth pic is how my battery last from 100 to 15 about 6 hours hardcore usage and after that 2 or 3 mins max 0 :/
i dont have this problem on sony stock rom 108 or 157 seems fine no fast drain or fast charge just on any other rom that problem happenes
iam now on cm11 phone model c6902
Click to expand...
Click to collapse
I do have original z1 stock .157 rom and I while ago had not this problem.
And yes, it seems that from 100% to 12% it takes ages even with heavy use then suddenly in 3 seconds drops to 0%

thegios said:
I do have original z1 stock .157 rom and I while ago had not this problem.
And yes, it seems that from 100% to 12% it takes ages even with heavy use then suddenly in 3 seconds drops to 0%
Click to expand...
Click to collapse
i tested every kernel out there for cm11
it is about bad reading from battery
but as no offline charge on cm roms
so no calibiration

So what is the solution?
This morning it dropped from 42% to 21% in a minute and then to 0% in seconds. I put charger on, left it charge 3 minutes, turned it on, batt was at 5%, unplugged and phone remained awake for 20 minutes during use
There must be a way... Full reset maybe?

thegios said:
So what is the solution?
This morning it dropped from 42% to 21% in a minute and then to 0% in seconds. I put charger on, left it charge 3 minutes, turned it on, batt was at 5%, unplugged and phone remained awake for 20 minutes during use
There must be a way... Full reset maybe?
Click to expand...
Click to collapse
tested everything wiped and fresh install still the same

mimotata said:
tested everything wiped and fresh install still the same
Click to expand...
Click to collapse
I will try removing sd card, even though I do not see why that would be a problem

Same problem.
Tried
>PC Companion Repair
>Batt calibration
>flashing Stock rom using flashtool
Still drops to 0% when it reach 50%
Maybe a battery problem?
We experience it all by now maybe because our z1 is more than a year old and battery maybe affected?
Sent from my C6903 using XDA Free mobile app

noteandfound said:
Same problem.
Tried
>PC Companion Repair
>Batt calibration
>flashing Stock rom using flashtool
Still drops to 0% when it reach 50%
Maybe a battery problem?
We experience it all by now maybe because our z1 is more than a year old and battery maybe affected?
Sent from my C6903 using XDA Free mobile app
Click to expand...
Click to collapse
Try this: when it reaches 50% and shuts down, while phone is off, plug it in, wait 10 minutes, turn it on and unplug it. Phone should be at 8% or so, and will last normally now.

thegios said:
Try this: when it reaches 50% and shuts down, while phone is off, plug it in, wait 10 minutes, turn it on and unplug it. Phone should be at 8% or so, and will last normally now.
Click to expand...
Click to collapse
Yeah from playing like 30 minutes of games it will shuts off. But i wait for my phone to cool down for like 10 minutes then turning it on , i now have 45% battery but will drain badly again even for like using the camera.

nikkorob said:
Yeah from playing like 30 minutes of games it will shuts off. But i wait for my phone to cool down for like 10 minutes then turning it on , i now have 45% battery but will drain badly again even for like using the camera.
Click to expand...
Click to collapse
Same to me.
We all experience the same thing.
Anyone consulted Sony Service Center regarding this?
Sent from my C6903 using XDA Free mobile app

thegios said:
Try this: when it reaches 50% and shuts down, while phone is off, plug it in, wait 10 minutes, turn it on and unplug it. Phone should be at 8% or so, and will last normally now.
Click to expand...
Click to collapse
noteandfound said:
Same to me.
We all experience the same thing.
Anyone consulted Sony Service Center regarding this?
Sent from my C6903 using XDA Free mobile app
Click to expand...
Click to collapse
sir are u Filpino ? one of d users of this server have suggested me to bring my unit to the sony center. it seems my phone's battery have already expanded. That same thing have made my phone's backcover to open (on the middle part where the battery is located).

Battery problem

My phone got weird battery problem
My phone is 2 yr old & battery replaced last yr
S Off using custom rom insertcoin senseven artmod
I think physically battery is ok
Problem is phone shows battery discharging very quickly
after that what I do
reset battery stats by power off or auto shut down by low battery then holding vol up & power button screen on till phone off again then start phone again it will shows increased battery %
For eg using phone for 10 hrs with 1 hr screen on time it discharge 100 to 0% then I reset battery stats & start phone again it will shows 65% battery
2 nd thing if I'm charging phone it wether phone on or off (let's assume 35% ) it's % not increased but it shows phone using more power after some time it will shows less battery (15%)but in reality phone is charging after resetting battery stats with above method it will shows correct %(55%)
I tried these methods to correct it
Flash stock firmware again unsuccessful
Flash stock ruu again unsuccessful
Also tried vol up + vol down + power button holding for 2 minutes to battery stats reset
What I should do ?
I count manually battery life it's above 24 hr with screen on time of 2.5 hr

See attached pic

yatindroid said:
See attached pic
Click to expand...
Click to collapse
Did you re-downloaded your apps after flashing the ruu or you have tested the battery directly after flashing the ruu? (to make sure none of your apps or settings is draining the battery).

alray said:
Did you re-downloaded your apps after flashing the ruu or you have tested the battery directly after flashing the ruu? (to make sure none of your apps or settings is draining the battery).
Click to expand...
Click to collapse
Battery is not drained
% not showed correctly
After battery stats reset it shows correct % again
My problem is I have to restart & reset battery stats again and again to use 100% battery life I have to do it 4-5 times

yatindroid said:
Battery is not drained
% not showed correctly
After battery stats reset it shows correct % again
My problem is I have to restart & reset battery stats again and again to use 100% battery life I have to do it 4-5 times
Click to expand...
Click to collapse
What about your apps? Like @alray asked. Have you tested with just the barebone stock rom with no apps installed?
I had a similar issue a while ago it turned out to be "Gsam Root companion" after removing the app my battery percentage returned to normal.
Sent from my HTC One using Tapatalk

Danny201281 said:
What about your apps? Like @alray asked. Have you tested with just the barebone stock rom with no apps installed?
I had a similar issue a while ago it turned out to be "Gsam Root companion" after removing the app my battery percentage returned to normal.
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
Now Totally stock Rom flashed ruu zip 5.0.2 sense 6
7.21.707.135
Only xda app installed nothing else
My previous Rom was SenSeven Rom with that problem started
I was using gsam battery monitor then not companion
Also used mi power bank in August month quite lots of time
Now I since 10 days stopped using mi power bank but problem started after that

yatindroid said:
Now Totally stock Rom flashed ruu zip 5.0.2 sense 6
7.21.707.135
Only xda app installed nothing else
My previous Rom was SenSeven Rom with that problem started
I was using gsam battery monitor then not companion
Also used mi power bank in August month quite lots of time
Now I since 10 days stopped using mi power bank but problem started after that
Click to expand...
Click to collapse
Err! Strange could be battery problem but it's weird how clearing stats cures it temporarily.
Have you tried resetting USB host mode with Vol up+down + power for 2 mins?
Maybe charge to 100% in all modes (on, off and in recovery) wipe stats reset USB host mode and reboot and monitor.
Sent from my HTC One using Tapatalk

Danny201281 said:
Err! Strange could be battery problem but it's weird how clearing stats cures it temporarily.
Have you tried resetting USB host mode with Vol up+down + power for 2 mins?
Maybe charge to 100% in all modes (on, off and in recovery) wipe stats reset USB host mode and reboot and monitor.
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
yes I tried Vol up+down + power for 2 mins
Unsuccessful
Whatever I do it always shows decreasing battery % but after battery stats reset it jumps to higher value
Even phone is off & put on charging battery shows decreasing trend but after reset shows correct %
Totally pissed off

This is latest drawing uhhh !!

I think your battery is going to die soon. Most likely some of its blocks are complitely dead, that's why it shows that kind of stats

donkeykong1 said:
I think your battery is going to die soon. Most likely some of its blocks are complitely dead, that's why it shows that kind of stats
Click to expand...
Click to collapse
That will be good at least I won't have suspicion to change battery or not
But how it possible to have 24+ hr battery life + 2-3 hrs SOT ?

yatindroid said:
That will be good at least I won't have suspicion to change battery or not
But how it possible to have 24+ hr battery life + 2-3 hrs SOT ?
Click to expand...
Click to collapse
Did you try to run your phone without rebooting to see how much it will last? Also, did you try another charger? Judging from your screenshots my guess is your battery is dying, but that would mean you couldn't get that much off charge and SOT to save your life. My battery is still pretty good, and I get just over 3 hours SOT and 36-48 hours off charge

donkeykong1 said:
Did you try to run your phone without rebooting to see how much it will last? Also, did you try another charger? Judging from your screenshots my guess is your battery is dying, but that would mean you couldn't get that much off charge and SOT to save your life. My battery is still pretty good, and I get just over 3 hours SOT and 36-48 hours off charge
Click to expand...
Click to collapse
ok let me explain screen shot
Anyhow I charged phone to 100% start it use it for 14-15 hr with 1-1.5 hr sot it goes to 0%
switched off or auto off
not charged
Battery stats reset with vol up + power button for 20 sec (it shows green HTC then goes off again)
Start phone again it shows 60% battery again (not charged )
Use 7-8 hrs with sot 1 hr approx
Goes to 0% again
Repeat process again shows battery 30-35% again
So this is screen shot history

yatindroid said:
ok let me explain screen shot
Anyhow I charged phone to 100% start it use it for 14-15 hr with 1-1.5 hr sot it goes to 0%
switched off or auto off
not charged
Battery stats reset with vol up + power button for 20 sec (it shows green HTC then goes off again)
Start phone again it shows 60% battery again (not charged )
Use 7-8 hrs with sot 1 hr approx
Goes to 0% again
Repeat process again shows battery 30-35% again
So this is screen shot history
Click to expand...
Click to collapse
I understood your screenshot. So, every time your phone shuts down, you do the reset thing, right? I would like to know what happens if you just try to turn on your phone after it shuts down. No reseting, no nothing. Simply try to turn it on

donkeykong1 said:
I understood your screenshot. So, every time your phone shuts down, you do the reset thing, right? I would like to know what happens if you just try to turn on your phone after it shuts down. No reseting, no nothing. Simply try to turn it on
Click to expand...
Click to collapse
Mostly it turns on with same % it was off if it's 0-1% it start in middle way then auto shut down

yatindroid said:
Mostly it turns on with same % it was off if it's 0-1% it start in middle way then auto shut down
Click to expand...
Click to collapse
That's a lot like my old Xperia X1. Turned out it was charge regulator issue. You might want to look that up. If I remember correctly, Xperia had that regulator on its motherboard. I changed it and everything was fine after that. I think M7's charge regulator is in the battery, so we're back to faulty battery. But that's just my opinion, you might want to monitor charging current to see if your phone is getting correct charge current

donkeykong1 said:
That's a lot like my old Xperia X1. Turned out it was charge regulator issue. You might want to look that up. If I remember correctly, Xperia had that regulator on its motherboard. I changed it and everything was fine after that. I think M7's charge regulator is in the battery, so we're back to faulty battery. But that's just my opinion, you might want to monitor charging current to see if your phone is getting correct charge current
Click to expand...
Click to collapse
I have 3 HTC phones in my family I use their charger randomly
My sister's HTC One m7 battery is fine no issues
I think my phones motherboard can have some issues as in warranty period it's battery changed 2 times so it could be !!
I got confused as after 1st battery replaced I hard brick phone & HTC changed motherboard after 2 months of that battery replaced again
Now I don't know what it is ?
I wish if battery is faulty it should dead asap so I can replace battery

yatindroid said:
I have 3 HTC phones in my family I use their charger randomly
My sister's HTC One m7 battery is fine no issues
I think my phones motherboard can have some issues as in warranty period it's battery changed 2 times so it could be !!
I got confused as after 1st battery replaced I hard brick phone & HTC changed motherboard after 2 months of that battery replaced again
Now I don't know what it is ?
I wish if battery is faulty it should dead asap so I can replace battery
Click to expand...
Click to collapse
Well, it could very well be motherboard issue too, but that was my last resort as it means you're pretty much screwed if your warranty expired

@Danny201281 @donkeykong1
Battery replaced but still have same problem
Is there any battery sensor ?
If yes where motherboard or any other chip like charging usb ?

charging battery issues

Hi guys
My Redmi has experiencing a bit odd behaviour every time I charge his battery
I always do full charging cycles, from 0 to 100%, and than use it till it full drains.
I usually charge it with the phone off
The last couple of times a strange thing happened: I fully charge it from 0, with the phone off, but when I turn the phone on the battery level shows something in the 70% level, the last time it was 77% only., This time I connected it back to the charger, and it went to 100%
I already installed a battery calibrator, but this keeps happening now
I use the original Xiaomi charger, or a Sony charger.
My Redmi is running the stock Marshmallow ROM - that's another funny thing, my phone simply has no updates to Noughat or ahead, I'm in Portugal those updates should have already arrived
So, any suggestion from you?
Regards
Antonio

Most probably your device has fake MIUI vendor ROM. I am guessing this because there's no update you got on your phone.
Redmi 4X has been updated already to MIUI 10 based on nougat 7.1.2.
I would recommend you to backup your all data on phone and clean flash latest stable update and restore back everything.

metelhammer said:
Most probably your device has fake MIUI vendor ROM. I am guessing this because there's no update you got on your phone.
Redmi 4X has been updated already to MIUI 10 based on nougat 7.1.2.
I would recommend you to backup your all data on phone and clean flash latest stable update and restore back everything.
Click to expand...
Click to collapse
Thanks
I'm not very worried about using latest ROM's on my phone, the charging issue is the the thing that annoys me the most, I'll think about updating my phone if and when the other problem gets a solution.
Does anybody has a say on this matter?

You should try to keep your battery level above 50%. Lithium batteries need charge to keep their effectiveness.
Only do 0-100% maybe once a month. When you do, charge the phone when off to 100%. Boot phone, if it is below 100% at startup charge more until it reaches 100%, then restart. Continue this until you get stable 100% or consistently close to it.
Battery calibration apps are trash, don't even bother with it.

antonioduarte said:
Thanks
I'm not very worried about using latest ROM's on my phone, the charging issue is the the thing that annoys me the most, I'll think about updating my phone if and when the other problem gets a solution.
Does anybody has a say on this matter?
Click to expand...
Click to collapse
Okay here is my thought on your situation.
I charge my phone upto or around 90% to 95% and recharge it when it falls down to around 20% to 25%, due to my daily routine and usage i do get around 20% battery remaining almost everyday and in very rae case it goes below 10% till now for me it never went shutdown due to battery gone full zero.
I have Redmi 1S and i charge like this and i still do get around 2.5 hours of screen on time on it which is great considering it is 4 years old device. and i am still using same original battery came in the box which now shows some ageing signs since it has little bulge on it and sometimes phone shuts downs it self and after turning on it looses 10% to 15% of its charge.
it is recommended to keep some battery % left in phone for good battery health.
over time battery does loose its capacity.
you should consider changing how you charge your phone dont let it charge fully or let it drain fully. when battery drained out completely it does takes some time to hold some charge and when you charge you phone fully the battery does goes back to 99% and goes again to 100% since it is already on charge, this keep happening until stop charging which affects battery capacity and the charge it can hold.
i think in you case this issue happening due to the how you charge your phone.

metelhammer said:
Okay here is my thought on your situation.
I charge my phone upto or around 90% to 95% and recharge it when it falls down to around 20% to 25%, due to my daily routine and usage i do get around 20% battery remaining almost everyday and in very rae case it goes below 10% till now for me it never went shutdown due to battery gone full zero.
I have Redmi 1S and i charge like this and i still do get around 2.5 hours of screen on time on it which is great considering it is 4 years old device. and i am still using same original battery came in the box which now shows some ageing signs since it has little bulge on it and sometimes phone shuts downs it self and after turning on it looses 10% to 15% of its charge.
it is recommended to keep some battery % left in phone for good battery health.
over time battery does loose its capacity.
you should consider changing how you charge your phone dont let it charge fully or let it drain fully. when battery drained out completely it does takes some time to hold some charge and when you charge you phone fully the battery does goes back to 99% and goes again to 100% since it is already on charge, this keep happening until stop charging which affects battery capacity and the charge it can hold.
i think in you case this issue happening due to the how you charge your phone.
Click to expand...
Click to collapse
Thanks for your input
That doesn't make much sense to me since I charge it almost every time with the phone off, so once its 100% the charging process stops, and there's no way the battery should start draining because the phone is off - and even if it was on, it shouldn't loose 25% at once . If it was hardware problem, with the battery getting worn, I would never have the chance to drain it to zero slowly (it would shut down at 10% or so) or get an 100% charge level - and once I turn the phone on, he does go to 100% without any problem, so the battery seems to be ok
I do the same process with my 5 years old Sony Z1, once I charge it 100% I turn it off, and once I turn the phone on again, the battery charging level shows 100%, even If I do it a month after last charging. This old guy's battery is showing first signs of age, nowadays I get half the time I used to, but not that dramatic thing of not be able to do a phone call with 10% battery level.
So, same charger, same process, why my Xiaomi is behaving differently than he used to?
Why the charge level indicates 100% and once I turn the phone on, it shows 70 something %, and than charges without any hesitation to 100% ?

antonioduarte said:
Thanks for your input
That doesn't make much sense to me since I charge it almost every time with the phone off, so once its 100% the charging process stops, and there's no way the battery should start draining because the phone is off - and even if it was on, it shouldn't loose 25% at once . If it was hardware problem, with the battery getting worn, I would never have the chance to drain it to zero slowly (it would shut down at 10% or so) or get an 100% charge level - and once I turn the phone on, he does go to 100% without any problem, so the battery seems to be ok
I do the same process with my 5 years old Sony Z1, once I charge it 100% I turn it off, and once I turn the phone on again, the battery charging level shows 100%, even If I do it a month after last charging. This old guy's battery is showing first signs of age, nowadays I get half the time I used to, but not that dramatic thing of not be able to do a phone call with 10% battery level.
So, same charger, same process, why my Xiaomi is behaving differently than he used to?
Why the charge level indicates 100% and once I turn the phone on, it shows 70 something %, and than charges without any hesitation to 100% ?
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The I am not sure why is that happening suddenly using same process.
I know you've said not interested in flashing ROM just yet but maybe consider changing ROM to official Global/china stable MIUI 8 or latest MIUI 10.
Possible reason for this hardware/battery or software issue.
Maybe get device checked at official xiaomi service center or contact them on customer care support. They should help you the best.

I'm trying to do the update route, but I'm not very confident on my tech skills - and the downloads are failing all the time.
What's the best/easiest way to update my 4x?

antonioduarte said:
I'm trying to do the update route, but I'm not very confident on my tech skills - and the downloads are failing all the time.
What's the best/easiest way to update my 4x?
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This post should help...
https://forum.xda-developers.com/showpost.php?p=78915706&postcount=2156

Xiaomi Warrior said:
This post should help...
https://forum.xda-developers.com/showpost.php?p=78915706&postcount=2156
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Hi
Thanks for your reply, I ended up finding there's a MIUI tool available on playstore with ready updates for most phones, so I just downloaded the updated ROM directly to my phone and installed it.
It even kept all my apps and files, I did some backups in the process but never had to use them
Thank you all guys

have you tried
1) power off the phone and then after few seconds power on
2) charge using a different charger + different cable when your battery level drops below 50%, just to check if the phone still charges to 76-77% or if it charges to 100%.
3) if the above fails you need try factory reset or flash latest MIUI rom