Incorrect battery percentage - Redmi Note 2 Q&A, Help & Troubleshooting

Ever since I got this device I've had issues with it being unable to correctly detect the battery level. Very often the phone discharges completely and shuts down, and upon a restart it shows 20% battery left.
I've tried calibrating the battery, but I'm either doing it wrong or it's not working... What else can be done to fix this discrepancy?

IshtaNoob said:
Ever since I got this device I've had issues with it being unable to correctly detect the battery level. Very often the phone discharges completely and shuts down, and upon a restart it shows 20% battery left.
I've tried calibrating the battery, but I'm either doing it wrong or it's not working... What else can be done to fix this discrepancy?
Click to expand...
Click to collapse
From my experience, if you use ROM based on Android 6.0 this can happen and in this case you must recalibrate the battery by draining it completely by few restarts and then charging it to 100% and leaving it on charger for 1h more. If you use 5.x Android this behavior is a sign of a battery loosing it's capacity. In which case you need new battery.
Sent from my Redmi Note 2 using Tapatalk

Try to use slow charging couple times, I mean 500ma charger or charge via pc slot.

Related

[Q] Battery is burning FAST !

First of all it wouldnt charge past 99%, And then, after one hour of standby it went down to 88%!!
Cm7 official stable release.
Me too no pass 99% :S
Try to download a "battery caliberation" app and do that, also burn it to 0% and charge to 100% while the phone is off..i heard that this might help.
Now i will flash Nottachtrix and do what i wrote Good luck man !
Velcis Ribeiro said:
Me too no pass 99% :S
Click to expand...
Click to collapse
The charging thing is something that is (seemingly) well known throughout the community. I have tried to do the calibration, but it doesn't seem to work that well (at least for me). There is a thread around here somewhere for fixing the issue. I just have never tried it due to work reasons.
The charging past 99% is a known issue with most of the ROMs. There is a thread in here that takes you step by step to get it to display 100%. Basically....
Charge the phone long enough to where you know it should be at 100% even though it is still displaying 99%.
Power the phone off while it is still connected to the charger and then pull the battery.
With the battery pulled, power the phone back on until you see the battery indicator with the "?".
Put the battery back in and reboot.
You will then see the display of 100% with the phone still connected to the charger. The only downside is that as soon as you disconnect the charger, it will drop back to 99%. I have done this multiple times.
You can try the latest nightly: update-cm-7-20120508-NIGHTLY-olympus-signed.zip
I read good things about it.
First of all, use Wipe Battery Stats function at recovery.
1 - Discharge all your smartphone battery;
2 - Connect it to the wall charger and don't turn it on;
3 - Wait till it shows you 100%;
4 - Remove the battery, wait 10 seconds, put it again and keep it turned off;
5 - Wait 30 minutes, keep it connected to the wall charger and press power button till it turns on;
6 - Wait 30 minutes, keep it connected to the wall charger and use Battery Calibration App to calibrate it;
It doesn't make any sense, but sometimes, after step 5, i prefer connect it to usb port in a laptop or computer and wait one hour. It always worked with me.
It might solve your problem .
Wiping battery stats does nothing. it just takes a few charge cycles. If it's a new rom and it's draining fast it's also cause you are probably playing with it a lot
Sent from my Galaxy Nexus using Tapatalk 2
nathan96 said:
after one hour of standby it went down to 88%!!
Click to expand...
Click to collapse
It could be a bluesleep problem... Install CPU Spy App and look if it goes into deep sleep mode. If not, there is a fix for it.
Aside from the OP's issue with the battery draining quickly, why does it matter if it doesn't show 100%?
Nothing can ever 'really' be 100% charged because as soon as you take it off mains it is instantly on the battery at lets say 99.9999%...
As long as the battery doesn't drain quickly I couldn't care less if its showing 99 or 100%.
The problem was that it was draining very quickly to smt like 50% and then it would hold longer...I just wiped everything, restored a neutrino 2.7 nandroid backup i had, flashed the jug fix v2 and now it shows 100%

Battery Only Charges to 70%

I have searched the forums but not found a thread which is similar to my problem.. I know there are battery drain issues with wifi etc but this is wierd and only started happening a few days back.
Basically i plug phone in to charge and it charges completely normally and quickly as it used to but only charges up to about 68/70% then it basically stops charging any higher, LED still red, charging display over battery still there. Turning phone off, rebooting, unplugging and plugging charger back in all makes no difference!
Any ideas what could be the cause of this? how to resolve?
I'm on stock JB, using the official wall charger and USB cable and i made sure the battery was full when i updated to JB as well.
Try a different battery, these are getting to the point where some will start to fail, six month warranties on batteries for a reason.
Well i have a £1.99 spare battery in atm as i run the original battery completely flat today. Seriously though be surprised if battery fail after 3/4 mths - never had battery dying issues on previous phones i've had until they were a good 2/3 years old.. Always a first though LOL
Its like the battery is saying its fully charged at 70%, now its completely flat i will charge it overnight with the phone off to full (if it gets there) and see if is resets the battery callibration or something.
Try to wipe battery stats via cwm recovery/advanced.
ohyesman said:
I have searched the forums but not found a thread which is similar to my problem.. I know there are battery drain issues with wifi etc but this is wierd and only started happening a few days back.
Basically i plug phone in to charge and it charges completely normally and quickly as it used to but only charges up to about 68/70% then it basically stops charging any higher, LED still red, charging display over battery still there. Turning phone off, rebooting, unplugging and plugging charger back in all makes no difference!
Any ideas what could be the cause of this? how to resolve?
I'm on stock JB, using the official wall charger and USB cable and i made sure the battery was full when i updated to JB as well.
Click to expand...
Click to collapse
if you are rooted than download batterycalibration and untick 100% charge and click recalibrite and leave the phone on charge and it should charge up nto 100%
https://play.google.com/store/apps/...ration&feature=nav_result#?t=W251bGwsMSwyLDNd
Shery4life said:
if you are rooted than download batterycalibration and untick 100% charge and click recalibrite and leave the phone on charge and it should charge up nto 100%
https://play.google.com/store/apps/...ration&feature=nav_result#?t=W251bGwsMSwyLDNd
Click to expand...
Click to collapse
This app just wipes battery stays, so you can do same by going to cwm/advanced/wipe battery stats.
jnr21 said:
This app just wipes battery stays, so you can do same by going to cwm/advanced/wipe battery stats.
Click to expand...
Click to collapse
It has nothing to do with wiping battery stats. I think Kangburra is right...
UPDATE.
Shamed to say that i am not rooted yet... I have been there and done all that on my old phone ZTE Blade, but i really like the added functions that TW brings and don't suffer much in the way of anoying redraws or lag etc (although i do feel that TW could be optomised alot better along with better RAM Management)
I was going to at least root to sim unlock but got a sim free unlocked phone so had no need, then other stuff i wanted to do like freeze samsung apps etc is all possible without root and i've not come across that "I" need root at the moment.. was going to for APPS2ROM but i got no need to free up space yet.
Cheers for the suggustions though - I have that battery callibration app already (from old phone days) obviously don't work though.
Anyway - I am monitoring battery atm but it seems that running the battery completely flat until it turned itself off and charging overnight with battery off has resolved this issue - maybe this reset the battery stats and recalibrated it.
Its back to normal now, charges upto 100% as normal!! Fingers crossed this was just a blip

[Q] Battery is giving strange problem,what should i do?

I will try to explain my problem clearly and in a concise manner.
My battery started giving problem since a few days back.That time I had ICS in my phone.
My phone having enough battery gets shutdown in the middle of nowhere.
If i turn it on,it shows battery to be 0 or 1%.Then i used to set it on charging,and it used to work normally and battery starts getting charged from 1%.
On the other hand,if instead of turning up the phone and charging again,when i used to plug the charger in without turning on phone, my phone shows the correct battery percentage.And it starts charging normally.
To summarise-
My phone having enough battery gets shutdown in the middle of nowhere.If my phone gets off on 70% automatically,and if i plug the charger keeping the mobile off,it starts charging from 70%.But if I turn on the mobile and plug the charger,it starts charging from 0%
So this thing worked for a few days.After that my phone started turning off quite frequently.And I had to plug the charger everytime it turns off so as to turn it on again.
A couple of days back,I flashed cyanogenmod JB and siyah kernel.Since then it has been worse.
Now phone doesnt even last a minute even after full charging.It just shuts down as soon as I turn it on.I tried clearing battery stats.
I am unable to use my phone,its next to a dead phone.Please help !
What should I do to save my phone?
maybe its time to replace battery...
kaczkalolo said:
maybe its time to replace battery...
Click to expand...
Click to collapse
Are you sure battery needs to be replaced?
One more thing, after flashing JB, the battery percentage doesnt fluctuate as before.
It gets off at say 70%, and then it doesnt matter if i charge it keeping phone on or off,the charging starts at 70%.
Its just that the phone gets off for no reason as soon as it is turned on.
There is an app on market called My Battery Status, you can check your battery health with it.
Sent from my CyanogenMod 10 powered GT-I9100 using xda premium
Replace the battery

[Q] Something wrong with my device/battery

This is not happening for the first time...
Ever since I rooted my device and flashed Android Revolutionary Rom on it, I noticed some weird behavior with my device/battery.
Last night I drained my battery to 6% and I turned it off. This morning I charged my phone with the phone stayed off and when the battery indicator screen lighted up it was showing that 50% juice remains. Since this is not happening for the first time, this time I would like to test on it to see whether there's really this much juice remains. So I turned my phone on and as expected, the battery indicator shows 50++% left. So I play around with it and I noticed the screen flashing terribly after some time. Not long after that the phone hang there and I had to do a hard reset by pulling out the battery. Before that, I can see that the battery is drained to around 20%. I was unable to power it on after pulling out the battery and when I connected my device to the charger, nothing happens (no display, no LED). So I left it there charging and after some time, finally the LED is lighting up (So, I assume that I drained the battery COMPLETELY just now). I can switch on the device afterwards and it shows 6% battery remains. I wonder why is this happening as this only happens when I charge my device with it turning off. Something wrong with the battery? Device? Or I have to do battery calibration?
nikctsh said:
This is not happening for the first time...
Ever since I rooted my device and flashed Android Revolutionary Rom on it, I noticed some weird behavior with my device/battery.
Last night I drained my battery to 6% and I turned it off. This morning I charged my phone with the phone stayed off and when the battery indicator screen lighted up it was showing that 50% juice remains. Since this is not happening for the first time, this time I would like to test on it to see whether there's really this much juice remains. So I turned my phone on and as expected, the battery indicator shows 50++% left. So I play around with it and I noticed the screen flashing terribly after some time. Not long after that the phone hang there and I had to do a hard reset by pulling out the battery. Before that, I can see that the battery is drained to around 20%. I was unable to power it on after pulling out the battery and when I connected my device to the charger, nothing happens (no display, no LED). So I left it there charging and after some time, finally the LED is lighting up (So, I assume that I drained the battery COMPLETELY just now). I can switch on the device afterwards and it shows 6% battery remains. I wonder why is this happening as this only happens when I charge my device with it turning off. Something wrong with the battery? Device? Or I have to do battery calibration?
Click to expand...
Click to collapse
Let it charge to 100% first before using. Then check how is the battery usage.
There might be an issue with the battery also. If it is swollen then it's time to get a new one.
Try using another battery and see. If it works fine on other battery then your battery needs to change,
The problem could also be in the ROM. Something could have gone wrong during installation even though it may look fine. If this is the case then reflash the ROM with a full wipe. If the problem still remains, return to stock rom and see.
I had the exact same problems, the screen flashes and stutters, network signal is lost and the phone turns off, it is due to uncalibrated battery.
There's a simple fix, download battery calibration from play stor (green android icon with percentage), charge your phone to 100% without using it, then click battery calibr. inside that app, then doscharge it till 0% (do your normal usage as ussual) and then charge it back to 100%
For healthy battery life don't let it drain lower than 10% it's the li-ion physics and always charge it fully, don't charge from 0 to 30-50-60% because the ions in the battery will not have a good flow.
Everything has it's lifespan but if it's configured and used properly it can have a long lifespan
Also to mention, if my recommendation doesn't work, your battery could be swolen due to inproper charging / heavy oc-ing or your charger is messed up.
Also to say, that flickering occured to me when i flashed a new rom and when i do lot of reboots, then the batterystats freak out, the voltages also and also your phone.
Charhe and use it properly, try to stay with a rom at least a couple of days to see how it'll go.
Sent from my pebble blue scoobie doo using Tapatalk.
RazorMC said:
Let it charge to 100% first before using. Then check how is the battery usage.
There might be an issue with the battery also. If it is swollen then it's time to get a new one.
Try using another battery and see. If it works fine on other battery then your battery needs to change,
The problem could also be in the ROM. Something could have gone wrong during installation even though it may look fine. If this is the case then reflash the ROM with a full wipe. If the problem still remains, return to stock rom and see.
Click to expand...
Click to collapse
The battery usage is normal, and its not swollen. I guess I will try to calibrate the battery or reflash the ROM again.
lsalamun said:
I had the exact same problems, the screen flashes and stutters, network signal is lost and the phone turns off, it is due to uncalibrated battery.
There's a simple fix, download battery calibration from play stor (green android icon with percentage), charge your phone to 100% without using it, then click battery calibr. inside that app, then doscharge it till 0% (do your normal usage as ussual) and then charge it back to 100%
For healthy battery life don't let it drain lower than 10% it's the li-ion physics and always charge it fully, don't charge from 0 to 30-50-60% because the ions in the battery will not have a good flow.
Everything has it's lifespan but if it's configured and used properly it can have a long lifespan
Also to mention, if my recommendation doesn't work, your battery could be swolen due to inproper charging / heavy oc-ing or your charger is messed up.
Also to say, that flickering occured to me when i flashed a new rom and when i do lot of reboots, then the batterystats freak out, the voltages also and also your phone.
Charhe and use it properly, try to stay with a rom at least a couple of days to see how it'll go.
Sent from my pebble blue scoobie doo using Tapatalk.
Click to expand...
Click to collapse
Yea, I will try to calibrate my battery to see if it helps

[Q] Battery Wtf

So i just played with Custom ROMs to find the best for me...
But from one point my Phone f*cked up the battery detecting...
CM9 and CM9 detect the battery at 45% and then he Level instantly just drop to 0%...
I cant even restart my phone, so i guess the battery really went out...
So how can i fix, that the ROM would not detect it 45% but 3-4% ?
And let me fully chage my phone ?
Stock rom Always Detect it 100% and then randonly the phone shut down in random times (cuz it drops the level to 0%)
I've tried the "Fully-Charge, Fully-Discharge" But the ROM still detect the Battery wrong...
Even tried to delete the battery stats...
Any solution, or idea ?
I currently use CM with the built-in CM9 kernel...
I think its battery problem.use a new battery.ur prblm will be solved
Sent from my WT19i using xda premium
RabirX said:
So i just played with Custom ROMs to find the best for me...
But from one point my Phone f*cked up the battery detecting...
CM9 and CM9 detect the battery at 45% and then he Level instantly just drop to 0%...
I cant even restart my phone, so i guess the battery really went out...
So how can i fix, that the ROM would not detect it 45% but 3-4% ?
And let me fully chage my phone ?
Stock rom Always Detect it 100% and then randonly the phone shut down in random times (cuz it drops the level to 0%)
I've tried the "Fully-Charge, Fully-Discharge" But the ROM still detect the Battery wrong...
Even tried to delete the battery stats...
Any solution, or idea ?
I currently use CM with the built-in CM9 kernel...
Click to expand...
Click to collapse
How old is the battery? What charging cable are you using and what is the cable plugged into?
If the battery is more then a year old it could be 'tired' and not holding a charge correctly (trying another known good battery in your phone will determine this, as will trying your battery in another phone, and if it works well you may have more issues to deal with). If you got the phone second hand, you have no way of knowing the battery's history. Repeated overcharging is also not recommended, as well as leaving the battery in very hot places as it can damage the onboard circuitry in the battery.
Cheap aftermarket (non OEM) USB cables are not that great imo, they are generally not as well made and soon get loose connections, resulting in poor connectivity (charging with a bad cable can also damage the battery). Always use the original cable or a good quality aftermarket one, like Belkin.
Charging the phone from a USB port on a PC or laptop (and/or via a USB hub) is not as efficient as charging it directly from a wall mains USB adapter, because the power often gets interrupted. Ideally for the best charge you should turn the phone off and use a wall/mains socket USB lead, so as give a direct, constant, power supply to charge a battery. A typical full charge is done in two hours. If you charge this way and the battery still has issues buy a new one.
smirnofred said:
How old is the battery? What charging cable are you using and what is the cable plugged into?
If the battery is more then a year old it could be 'tired' and not holding a charge correctly (trying another known good battery in your phone will determine this, as will trying your battery in another phone, and if it works well you may have more issues to deal with). If you got the phone second hand, you have no way of knowing the battery's history. Repeated overcharging is also not recommended, as well as leaving the battery in very hot places as it can damage the onboard circuitry in the battery.
Cheap aftermarket (non OEM) USB cables are not that great imo, they are generally not as well made and soon get loose connections, resulting in poor connectivity (charging with a bad cable can also damage the battery). Always use the original cable or a good quality aftermarket one, like Belkin.
Charging the phone from a USB port on a PC or laptop (and/or via a USB hub) is not as efficient as charging it directly from a wall mains USB adapter, because the power often gets interrupted. Ideally for the best charge you should turn the phone off and use a wall/mains socket USB lead, so as give a direct, constant, power supply to charge a battery. A typical full charge is done in two hours. If you charge this way and the battery still has issues buy a new one.
Click to expand...
Click to collapse
First of all, the Phone is manufactured in 11W41 (2011 Week #41) and the battery in 11W39 (2011 Week #39)
I use a tipical Micro USB charger which does not connect to the wall with USB but the cable directly integrated into the adapter...
And the phone's shipped official cable to charge throught my PC...
The battery worked fine before i forgot to delete battery stats and flashed a ROM...
After that, all ROM is getting fake battery data...
After using my phone i noticed:
-When the phone displays 70-80% charge, the battery actually have 10-15%
-When the battery reach 0% the phone not just jumps to 0% but the Phone shut down within a half second (as no more energy)
-When i charge it to 3-4% the phone show 80% again...
-So i can charge it to about 10 or max 15% when the OS detect 100% and does not charge it further more, which prevent me from properly re-calibrate the battery stats, cuz 10-15 will be always the max charge of the battery...
Now i'm looking for some kind of Mod / App that fake the Battery level to the OS (for example lock it to 5% and the OS continue to charge the battery) i know its dangerious cuz if i'm not aware i'll overcharge it and it will die permanently, but i have no better idea ATM...
Update: Sometimes after my phone dies from no remaining electron in the battery It displays 5% charge when i switch it on while connected to a charger (the only way i can switch it on) And starts to increase.. (5-6-7-8 etc..)
But sometimes it instantly jumps up to 70-80% if i think right when the screen switches of..
So i enabled "No-screen-off-whili-on-charger" and letit charging..
Will notice you about the result...
RabirX said:
First of all, the Phone is manufactured in 11W41 (2011 Week #41) and the battery in 11W39 (2011 Week #39)
I use a tipical Micro USB charger which does not connect to the wall with USB but the cable directly integrated into the adapter...
And the phone's shipped official cable to charge throught my PC...
The battery worked fine before i forgot to delete battery stats and flashed a ROM...
After that, all ROM is getting fake battery data...
After using my phone i noticed:
-When the phone displays 70-80% charge, the battery actually have 10-15%
-When the battery reach 0% the phone not just jumps to 0% but the Phone shut down within a half second (as no more energy)
-When i charge it to 3-4% the phone show 80% again...
-So i can charge it to about 10 or max 15% when the OS detect 100% and does not charge it further more, which prevent me from properly re-calibrate the battery stats, cuz 10-15 will be always the max charge of the battery...
Now i'm looking for some kind of Mod / App that fake the Battery level to the OS (for example lock it to 5% and the OS continue to charge the battery) i know its dangerious cuz if i'm not aware i'll overcharge it and it will die permanently, but i have no better idea ATM...
Update: Sometimes after my phone dies from no remaining electron in the battery It displays 5% charge when i switch it on while connected to a charger (the only way i can switch it on) And starts to increase.. (5-6-7-8 etc..)
But sometimes it instantly jumps up to 70-80% if i think right when the screen switches of..
So i enabled "No-screen-off-whili-on-charger" and letit charging..
Will notice you about the result...
Click to expand...
Click to collapse
try reflash stock.ics ftf should fix this
Already tried, the Stock rom always showed 100% charge, and when the battery ran out, just powered off...
(Jumped from 100 to 0 instantly)
As i mentioned, in the reply you quoted, today it started charging from 0...
It went good, but somewhy, it just stopped at 26% and not a single volt went into the Battery...
As i Pulled out the Cable, the indicator jumped to 100 instantly...
Can you link several stock ROMs ?
I've tried with the 4.0.4 Android
but maybe the 2.3 can still work with it...
RabirX said:
Already tried, the Stock rom always showed 100% charge, and when the battery ran out, just powered off...
(Jumped from 100 to 0 instantly)
As i mentioned, in the reply you quoted, today it started charging from 0...
It went good, but somewhy, it just stopped at 26% and not a single volt went into the Battery...
As i Pulled out the Cable, the indicator jumped to 100 instantly...
Can you link several stock ROMs ?
I've tried with the 4.0.4 Android
but maybe the 2.3 can still work with it...
Click to expand...
Click to collapse
but i think theres some HW damage. even if not rhe battery maybe some config chip is broken or whatever on the board. normally flashing a stock.ics.ftf resloves all software issues, as its resets all stuff to factory..
anyway, here u can find links to other android versions: http://talk.sonymobile.com/t5/Andro...y-Bean-ICS-Ice-Cream-Sandwich-and/td-p/154389
bejunk said:
but i think theres some HW damage. even if not rhe battery maybe some config chip is broken or whatever on the board. normally flashing a stock.ics.ftf resloves all software issues, as its resets all stuff to factory..
anyway, here u can find links to other android versions:
Click to expand...
Click to collapse
One solution still, that my frind has the same phone as me, so when i meet him, he can charge my battery to really full and maybe when i insert it to my phone it might work...

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