Database Develop

[SOLVED] Incorrect Battery Values

This seems to be quite a common and somewhat obscure at the same time.
Many people have reported installing a new rom or even just powering up their phone and seeing a battery % much different from what they expect. Most often much lower than it should be. Evidently this corrects itself after some time but it's a real problem if your display reads <15% because you really have to plug it in then, even with you know you have 90% battery!
So, here's the solution after testing it under different circumstances over a few days:
Simply boot your phone when it is not plugged in to a power source and battery % will be accurate.​
That simple. Silly LG!
So, if you flash a new rom, unplug the USB cable before you reboot...
Hit 'Thanks' below for the 50 reboots I did to prove this...

hehehe jups allready figured that out on myself tho haha. But indeed that's kinda silly of LG

djmcnz said:
This seems to be quite a common and somewhat obscure at the same time.
Many people have reported installing a new rom or even just powering up their phone and seeing a battery % much different from what they expect. Most often much lower than it should be. Evidently this corrects itself after some time but it's a real problem if your display reads <15% because you really have to plug it in then, even with you know you have 90% battery!
So, here's the solution after testing it under different circumstances over a few days:
Simply boot your phone when it is not plugged in to a power source and battery % will be accurate.​
That simple. Silly LG!
So, if you flash a new rom, unplug the USB cable before you reboot...
Hit 'Thanks' below for the 50 reboots I did to prove this...
Click to expand...
Click to collapse
What about every time I use a custom rom the battery % indicator jumps right down to 90-95% when unplugging from charger ? Do you have a solution for that ?

reidar.ostrem said:
What about every time I use a custom rom the battery % indicator jumps right down to 90-95% when unplugging from charger ? Do you have a solution for that ?
Click to expand...
Click to collapse
Try rebooting after you disconnect power.

djmcnz said:
Try rebooting after you disconnect power.
Click to expand...
Click to collapse
Sorry to say the same..
Even while charging with the phone shut down, pulling it off the charger and then booting this happens. On my phone I have experienced it on all MCR's.
It's really not a big deal as long as the battery performs as Stock 10b, that build has been stable batterywise on my phone. But staying stock isn't too much fun

Well, every time I charge, whether I reboot/shut down before unplugging or not, my charge always maxes out at 96%.
Annoying and I'd like it sorted if at all possible.
Anyone?..........lol
Sent from my LG-P990 using XDA App

ye i got that exact same issue i was wondering why that was happening and hoped that a simple reboot would fix it but its a bit more complicated than that i suppose...
also the battery reset in cwm didnt fix the loading till 97% w/e percentage.
when i install the stock rom it allows me to load it till 100% though pretty weird stuff -.-

mcnob said:
Well, every time I charge, whether I reboot/shut down before unplugging or not, my charge always maxes out at 96%.
Annoying and I'd like it sorted if at all possible.
Anyone?..........lol
Click to expand...
Click to collapse
I had a replacement netbook battery that could only max to 90%. So, over the weekend, I practically drained it to 0% (not a healthy practice for Li-ion batteries but I was desperate). Took out the battery for a while, and then recharged for several hours. Well, it seems to get up to 100% now.
Perhaps you could try using the the phone until it very low on battery before recharging. Maybe the charging process in the phone needs some sort of recalibration. But should not be doing this all the time as it will reduce Li-ion battery longevity.

Let mine totally die last night so it wouldn't even turn on at all. Took out and replaced battery and then charged it overnight and hey-presto, when I unplugged it this morning, it stayed at 100%.
Solved indeed....for me anyway. Feel free to try the same and post your results.
Sent from my LG-P990 using XDA App

mcnob said:
Let mine totally die last night so it wouldn't even turn on at all. Took out and replaced battery and then charged it overnight and hey-presto, when I unplugged it this morning, it stayed at 100%.
Solved indeed....for me anyway. Feel free to try the same and post your results.
Sent from my LG-P990 using XDA App
Click to expand...
Click to collapse
I'll be sure to try your tip man. But not easy drain it completely when I always need the phone :=)

I guys! I've got the same problem.
I think that it could depend on the "full battery popup FIX" that Paul introduced in his roms by the FR8.
So I would like to ask Paul if you can create a patch to remove that fix. Just to try it!
According to me, incorrect battery amount depend on a wrong voltage read error (offset introduced?) by the rom. :blink:
In my case, I have followed many times battery wype procedure without positive issue. The matter leaves only by flashing original roms.
I think that if Paul have written a wrong battery values range (to delete the battery full popup) that can be traduced in an incorrect battery status displays.

manciu said:
I guys! I've got the same problem.
I think that it could depend on the "full battery popup FIX" that Paul introduced in his roms by the FR8.
So I would like to ask Paul if you can create a patch to remove that fix. Just to try it!
According to me, incorrect battery amount depend on a wrong voltage read error (offset introduced?) by the rom. :blink:
In my case, I have followed many times battery wype procedure without positive issue. The matter leaves only by flashing original roms.
I think that if Paul have written a wrong battery values range (to delete the battery full popup) that can be traduced in an incorrect battery status displays.
Click to expand...
Click to collapse
It was occurring before Paul introduced that change unfortunately...

After I wrote here, I registered a premium account to Paul's from modaco site and toke a custom fr12 rom without "battery full popup remove patch". Now I'm going to sleep and plugin the 2x to charge. Tomorrow I'll write here if is that the solution...
djmcnz said:
It was occurring before Paul introduced that change unfortunately...
Click to expand...
Click to collapse
I'm sure it's occured from fr8 in my case. With stock rom I haven't any battery problem so there is something wrong in fr raleases of course... I hope somebody discovers what is...

manciu said:
After I wrote here, I registered a premium account to Paul's from modaco site and toke a custom fr12 rom without "battery full popup remove patch". Now I'm going to sleep and plugin the 2x to charge. Tomorrow I'll write here if is that the solution...
I'm sure it's occured from fr8 in my case. With stock rom I haven't any battery problem so there is something wrong in fr raleases of course... I hope somebody discovers what is...
Click to expand...
Click to collapse
Perhaps, but you can not conclude it was introduced by MCR. You logic is wrong there.

Even without "battery full popup fix" it doesn't work good...
Battery level, when unpluged, stay at 100% for 2 minutes afterwards drop down fast until 85% then drain normally...

I'm getting huge battery display problems no matter what I do.
When I took it off the charger this morning, it said I had 100%... thats fair enough. However it stayed at 100% all day, so to "refresh" it this evening I restarted the phone, and low and behold it now says I have 27% left. But again, it's just sticking at that value, even with me now plugging the phone into the wall to charge. It simply says "Charging (27%)" and won't budge, likely until I restart the phone again.
Sometimes it works fine, it seemed to be doing ok last night before I put it on the charger. Any tips/suggestions? Is this something likely to be fixed when the Gingerbread update rolls around?
This is my first real smartphone, and am fairly annoyed as its giving me a fair few problems that I've not had from other electronic devices.

As I stated in another thread, I had the same issue while on MoDaCo Fr12. However, after reverting back to stock, the battery percentage is spot-on and I'm getting up to 48 hours use out of it.
Draw your own conclusions.
Sent from my LG-P990 using XDA App

That sounds super, but I'm still on stock too. About the only things of note I've done are root and switching to Launcher Pro. Oh, and Clockwork Mod of course. Perhaps a complete reboot is needed, we'll see how it goes.
Saying that - since charging, my phone has been at 90% all evening, until right this moment when it changed to 89%. It's less than I'd expect on this type of phone for 3-4 hours use (or lack thereof, I've barely touched it), but it's a start eh?

Welcome to the world of smartphones my friend. I've had various handsets over the last 4 years from iphone to android and a day and a half out of the battery is about average......at best. ;-)
Sent from my LG-P990 using XDA App

Just to clarify, what I meant in my previous post was that I was expecting to battery to drop a lot more than it did. The fact that it only went down 1% in several hours of use prompted me to think that the battery value was messed up.
As it is, I've not charged my phone in the 36 hours since, and it tells me I have 73% battery left. Perhaps it is performing extremely well after all? If that's the case then I'm more than happy with it, but being the pessimist I'm still expecting the phone to turn off sometime with the battery reporting incorrect values.

[Q] battery caliberation hyper sense nova

Hello guys
My oem battery seems to be dying at 20 per without any low battery warning
I am using hyper sense nova Rom
But this problem existed in the old Rom too I just realized it.
To break down the problem further
It shuts down on 20
Then it won't restart saying battery is empty
However if I charge it again to say 18 percent and disconnect
It gives low battery warning at 15/10/5
I found out there is some app called caliberator however I can't seem to make it work on this kernel
Please help how can I solve this problem ???

more details
The Rom and kernel details are
- HTC Official Gingerbread 2.3.3 v3.14.405.1 (Stock Sense 1.9) - Kernel: 2.6.35.10-gb-sense v8 - by dbasabe
Ok this is the battery caliberation thread which I tried to find the answer on
http://forum.xda-developers.com/showthread.php?t=765609
And this is the link to Rom I am using
http://forum.xda-developers.com/showthread.php?t=1604957

am-rj-tbt said:
The Rom and kernel details are
- HTC Official Gingerbread 2.3.3 v3.14.405.1 (Stock Sense 1.9) - Kernel: 2.6.35.10-gb-sense v8 - by dbasabe
Ok this is the battery caliberation thread which I tried to find the answer on
http://forum.xda-developers.com/showthread.php?t=765609
And this is the link to Rom I am using
http://forum.xda-developers.com/showthread.php?t=1604957
Click to expand...
Click to collapse
First charge your phone to 100% when it is powered off. Then flash the rom. Then let it discharge completely so it shuts off. Then charge full again. Then it should be solved :fingers-crossed:

race55 said:
First charge your phone to 100% when it is powered off. Then flash the rom. Then let it discharge completely so it shuts off. Then charge full again. Then it should be solved :fingers-crossed:
Click to expand...
Click to collapse
So i am supposed to put the phone off ....
let it charge over night
then morning go to recovery mode
wipe all the data etc and stuff
reinstall the rom ....
and then see how it performs...
should i put the charger plugged in while flashing the rom and maintaining 100 percent charge???
i have tried something last night
i let the phone die as in drained the battery and let it charge in the off state to 100 percent and the charging led was no longer lit i went to recovery and wiped the battery stats and then started the phone i am still waiting to find out how it performs till the end of day...
if that doesnot work ill try your method...
:good:
i have tried reading that battery learn app and everything ... if only that app would work on my kernel
nehooo lets seee

am-rj-tbt said:
So i am supposed to put the phone off ....
let it charge over night
then morning go to recovery mode
wipe all the data etc and stuff
reinstall the rom ....
and then see how it performs...
should i put the charger plugged in while flashing the rom and maintaining 100 percent charge???
i have tried something last night
i let the phone die as in drained the battery and let it charge in the off state to 100 percent and the charging led was no longer lit i went to recovery and wiped the battery stats and then started the phone i am still waiting to find out how it performs till the end of day...
if that doesnot work ill try your method...
:good:
i have tried reading that battery learn app and everything ... if only that app would work on my kernel
nehooo lets seee
Click to expand...
Click to collapse
Yes keep plugged in during flash. When booted up, unplug.
Sent from my HTC Flyer P512 using XDA

I am going to try keeping fingers crossed . Have not heard many success stories so far and it sure is a little annoying to think phone dies without low battery warnings :banghead::banghead::banghead:
Sent from my HTC Nexus One using XDA

Ok I did what you said this morning m hoping it works meanwhile would anyone make that battery caliberation app work for sense kernel please
Sent from my HTC Nexus One using XDA

8 hours n battery is down to 35 still waiting on end result if I get all way to 1 I should be happy
Sent from my HTC Nexus One using XDA

Didn't work died at twenty .... Help !! :banghead:
Sent from my HTC Nexus One using XDA

Samsung Galaxy S plus random shutdown

hi guys, i'm getting really pissed off right now
i''ve got my phone for 3 months now and it worked like charm till the last month
every time my phone shutdown randomly , and when i restart it, my battery level is under the 10%
even if i charge it the whole night till 100%, after i use it a few minutes it shutsdown and the battery will be very low.
sometimes it doesn't even turn on anymore.
i can't use my phone now only when its charging because it doesn't shutdown then.
I've tried everything that i could think of, i've recalibrated the battery , installed different roms but i got the problem with every rom.
i've even tried it with a ics rom but still got the same problem
someone please help me

my phone had the same problem i have flash any costum rom but nothing and then i have flashed a stock original rom for fix that....and then retry a costum rom.
have you try to wipe /system /sdcard /data /cache /delik-cache and then flash a stock original rom with odin ?

Rajito said:
hi guys, i'm getting really pissed off right now
i''ve got my phone for 3 months now and it worked like charm till the last month
every time my phone shutdown randomly , and when i restart it, my battery level is under the 10%
even if i charge it the whole night till 100%, after i use it a few minutes it shutsdown and the battery will be very low.
sometimes it doesn't even turn on anymore.
i can't use my phone now only when its charging because it doesn't shutdown then.
I've tried everything that i could think of, i've recalibrated the battery , installed different roms but i got the problem with every rom.
i've even tried it with a ics rom but still got the same problem
someone please help me
Click to expand...
Click to collapse
I have the exact same problem, am about to buy a new battery tomorrow unless someone else has another solution? This might not be the proper forum but in here at least many i9001 users will read it.
I've had this problem for about a week, was very annoying while on holiday. I've tried using BroodROM BE 1.0, Stock KQE and now back to stock KPG.

Try ebay - you can easily find decent batteries for 5$ there.

pedrsantiago said:
Try ebay - you can easily find decent batteries for 5$ there.
Click to expand...
Click to collapse
Well yes I'm going to try a different battery soon but the odd thing is after my battery charge seems to drop down to 5% or so, it starts charging to about its original charge level without a charger connected. So it's basically 80%->drop to 5%->charge back to 60% without charger.

i'll try now to do a hard reset, go back to stock rom, then reinstall an costum rom,
will tell you if it works!

Plz mods remove/delete this sheeyat.. this is
Galaxy S Plus I9001 Android Development

i have used TeamWin Recovery for wipe all partition becouse with hard reset don't wipe /system and internal sd.

Rajito said:
hi guys, i'm getting really pissed off right now
i''ve got my phone for 3 months now and it worked like charm till the last month
every time my phone shutdown randomly , and when i restart it, my battery level is under the 10%
even if i charge it the whole night till 100%, after i use it a few minutes it shutsdown and the battery will be very low.
sometimes it doesn't even turn on anymore.
i can't use my phone now only when its charging because it doesn't shutdown then.
I've tried everything that i could think of, i've recalibrated the battery , installed different roms but i got the problem with every rom.
i've even tried it with a ics rom but still got the same problem
someone please help me
Click to expand...
Click to collapse
I thought I was the only one with this problem. I charge my battery to full and it starts draining normally. Then, when around 30-80% battery remaining, it turns off. It only turns off when you use it for a while, when the screen is off it stays on normally. After rebooting it turns off within a minute or so. This continues for a few reboots with the battery level remaining roughly the same. Eventually after a few boots it shows 3-4% of battery, after which I of course have to charge. Also tried calibrating and tried different roms but it still remains. I ALSO SWAPPED MY BATTERY WITH A FRIEND BUT IT DIDN'T HELP! It worked like a charm for him but I still got turn offs with his battery.

If i were you Guys, i would install stock rom and hand in my phone under warranty ( of course if you still have it ). Because if this occurs even when u swap battery, let samsung play with you phone then

Its not your battery..restore your phone to the way it was and give it to samsung

i'm getting pissed of now, even with the stock rom it randomly shutsdown.
i don't have any warrenty so i can't give it back to samsung

In case anyone's still wondering, in my case it did turn out to be a fried battery. If anyone else is experiencing the same issues I was, just check your battery to see whether or not it is swollen. If it's bigger than it should be, that probably means it's fried and you should replace it. I'm happily running custom roms without any trouble again now, and battery life is awesome!
Sent from my GT-I9001 using xda app-developers app

Rajito said:
i'm getting pissed of now, even with the stock rom it randomly shutsdown.
i don't have any warrenty so i can't give it back to samsung
Click to expand...
Click to collapse
Sorry Rajito, but you are having a serious problem, i think the motherboard is the problem, my friend had the same problem with his I9000 S simple. You shoud go to a service !

Hi guys,
I also have this problem, my phone randomly turns off and when I turn it on, it shows much less remaining battery percentage than before. (please see attached image) After turning on the value is increasing, sometimes from ~5% to 30-40% or more...
Now I have CM10 Jelly Bean flashed, but CM9 did the same sometimes but much more rarely than on JB. Today the phone 'died' three times until noon.

aToS88 said:
Hi guys,
I also have this problem, my phone randomly turns off and when I turn it on, it shows much less remaining battery percentage than before. (please see attached image) After turning on the value is increasing, sometimes from ~5% to 30-40% or more...
Now I have CM10 Jelly Bean flashed, but CM9 did the same sometimes but much more rarely than on JB. Today the phone 'died' three times until noon.
Click to expand...
Click to collapse
Yeah that's the exact same problem I had. In my case it turned out to be a fried battery, see if it's swollen or not, if you lay your battery on a table it should stay still and not wobble around. If the battery's not flat but swollen that means your battery is fried. In this case good news because you can easily replace it

avreijnen said:
Yeah that's the exact same problem I had. In my case it turned out to be a fried battery, see if it's swollen or not, if you lay your battery on a table it should stay still and not wobble around. If the battery's not flat but swollen that means your battery is fried. In this case good news because you can easily replace it
Click to expand...
Click to collapse
unfortunately it is absolutely not swollen, its fully flat :\
besides this I put out the battery now and put it back and it is showing only 2% percent of battery so maybe my battery is wrong
UPDATE: after uninstalling the pro version of Battery Indicator there were no random shutdowns at all, but the free version is fine o.0

[Q] [help needed] erratic battery levels on mi3w

I am facing a battery problem. whenever i reboot or boot into recovery, the battery level randomly falls down about 10 to 20 percent.. also, if i connect the charger after a discharge, the battery starts charging from 0 but when i boot the phone, sometimes it just charges up straight to 15 percent or 20 percent.. if i disconnect the charger and start using the phone, the battery starts discharging normally and continues till zero again (sometimes it jumps straight from 3 percent to zero).. dont understand whats going on..
actually this problem started after i flashed ivan's first build of the lollipop rom (using true dual boot).. at that time i thought its a bug.. but after that it started when i had only miui too..
please help..

Delete batterystats.bin
Or install battery calibration app from play store

volcano619 said:
Delete batterystats.bin
Or install battery calibration app from play store
Click to expand...
Click to collapse
Actually, let me tell you what happened yesterday.. I was using the phone, so the battery came down to 0 and the phone switched off.. I connected the charger, so the phone went started charging from 0 percent.. Fair enough.. But when i switched the phone on.. (Booted into android) the battery level went straight to 12 percent.. So, i disconnected the charger and was able to use the phone for some 15 minutes. After that, the battery fell down to 0 from 5 percent.. Then, i allowed the phone to charge for some time.. It reached the level of 64 percent. And then i deleted the batterystats.bin and rebooted.. The battery level went to 86 percent straight..
So what i suspect is.. I dont have a battery problem since if i loose charge after a reboot, i get that back during charging..
And i dont know why but this problem occurs more often when i boot into the recovery.. Any guesses why recovery is causing this ?

vasishath said:
Actually, let me tell you what happened yesterday.. I was using the phone, so the battery came down to 0 and the phone switched off.. I connected the charger, so the phone went started charging from 0 percent.. Fair enough.. But when i switched the phone on.. (Booted into android) the battery level went straight to 12 percent.. So, i disconnected the charger and was able to use the phone for some 15 minutes. After that, the battery fell down to 0 from 5 percent.. Then, i allowed the phone to charge for some time.. It reached the level of 64 percent. And then i deleted the batterystats.bin and rebooted.. The battery level went to 86 percent straight..
So what i suspect is.. I dont have a battery problem since if i loose charge after a reboot, i get that back during charging..
And i dont know why but this problem occurs more often when i boot into the recovery.. Any guesses why recovery is causing this ?
Click to expand...
Click to collapse
The same thing is happening to me too right now in cm13. So i reverted back to miui where the battery jump doesn't happen but while using normally battery discharge is erratic like it goes from 32 to 20 in a minute. This happens a lot more when charge is below 20 percent. while using normally when the battery is at 100, it goes to 80 after 1 hr of usage but 20-0 takes 10 minutes in cm13.
i have tried calibrating the battery many times to no improvement whatsoever.
As you said when the battery discharges completely the phone turns off. Now when i plug into the charger and boot it to cm13 the battery indicator shows 19 or 23 or some random number
Did you find any fix for this erratic behavior ?

- If you're using custom kernel, stop using it and revert to stock.
- Either dirty flash (to revert the kernel)+use/wait until the battery's ran out+charge it while turned off, OR clean flash without using custom kernel

rxl.noir said:
- If you're using custom kernel, stop using it and revert to stock.
- Either dirty flash (to revert the kernel)+use/wait until the battery's ran out+charge it while turned off, OR clean flash without using custom kernel
Click to expand...
Click to collapse
I'm not on any custom kernel and I tried charging the phone without booting to Android. Still no change :crying:

argk13 said:
I'm not on any custom kernel and I tried charging the phone without booting to Android. Still no change :crying:
Click to expand...
Click to collapse
Have you tried a clean flash?

rxl.noir said:
Have you tried a clean flash?
Click to expand...
Click to collapse
Yes 2 days ago I wiped everything including internal storage and installed cm13
So you don't have this issue ? Which ROM are you on right now?
Somehow it feels like twrp is causing this cause whenever I boot to recovery there is a battery drop by 2-3 percent or suddenly the battery shows 60 or something like that instead of 30 or whatever the correct value is

argk13 said:
Yes 2 days ago I wiped everything including internal storage and installed cm13
So you don't have this issue ? Which ROM are you on right now?
Somehow it feels like twrp is causing this cause whenever I boot to recovery there is a battery drop by 2-3 percent or suddenly the battery shows 60 or something like that instead of 30 or whatever the correct value is
Click to expand...
Click to collapse
I'm on AOKP currently, swtching from CM13 since I wanted to try it. I got the same problem seldomly, but that's because of custom kernel keep on borking the battery calibration.
If I were you, I'd started searching for a new battery, just in case it was dying out. If my memories serves me right, before I need to replaced my battery because of short bootloops, my battery's level also started to jump haphazardly without any reason.

vasishath said:
I am facing a battery problem. whenever i reboot or boot into recovery, the battery level randomly falls down about 10 to 20 percent.. also, if i connect the charger after a discharge, the battery starts charging from 0 but when i boot the phone, sometimes it just charges up straight to 15 percent or 20 percent.. if i disconnect the charger and start using the phone, the battery starts discharging normally and continues till zero again (sometimes it jumps straight from 3 percent to zero).. dont understand whats going on..
actually this problem started after i flashed ivan's first build of the lollipop rom (using true dual boot).. at that time i thought its a bug.. but after that it started when i had only miui too..
please help..
Click to expand...
Click to collapse
did you ever change your battery ?

GhostWANTED said:
did you ever change your battery ?
Click to expand...
Click to collapse
Nope..
Wow i thought i am the only one facing this

vasishath said:
Nope..
Wow I thought I am the only one facing this
Click to expand...
Click to collapse
maybe now it's the time to change the battery
btw I don't have those problems but I have huge drain while the phone is idle.

rxl.noir said:
I'm on AOKP currently, swtching from CM13 since I wanted to try it. I got the same problem seldomly, but that's because of custom kernel keep on borking the battery calibration.
If I were you, I'd started searching for a new battery, just in case it was dying out. If my memories serves me right, before I need to replaced my battery because of short bootloops, my battery's level also started to jump haphazardly without any reason.
Click to expand...
Click to collapse
Maybe my battery has become faulty but I still feel this is a software problem because since I moved from twrp 3.0.2-0 and cm13 to twrp 2.8.7.0 and aokp the battery jumps have become less frequent but they are still there.
If it was a software problem I think most people wouldn't notice as they won't use their phones till the battery discharges completely all the time.

vasishath said:
I am facing a battery problem. whenever i reboot or boot into recovery, the battery level randomly falls down about 10 to 20 percent.. also, if i connect the charger after a discharge, the battery starts charging from 0 but when i boot the phone, sometimes it just charges up straight to 15 percent or 20 percent.. if i disconnect the charger and start using the phone, the battery starts discharging normally and continues till zero again (sometimes it jumps straight from 3 percent to zero).. dont understand whats going on..
actually this problem started after i flashed ivan's first build of the lollipop rom (using true dual boot).. at that time i thought its a bug.. but after that it started when i had only miui too..
please help..
Click to expand...
Click to collapse
bad news my friend, my mi3 started doing the same, a week later I was taking some pictures and then suddenly it started to bootloop or only boot to fastboot mode. The only solution was to replace the battery. I hope is not the same with your phone. Good Luck

Hmm.. But this thing started with me in just 6 months after buying the phone.. Also, the screen on time i get is more or less the same as others.. So i dont think so that my battery is bad.. I have tried calibrating it many times but no luck.. And for some reason, my battery always jumps from 13 percent to 10 percent directly :laugh:

having the same problem since i flashed MM roms. If the battery only left 10% , it will drained in minutes

Same problem with me.

I was having similar problems! Until later on I came to the conclusion that my phone was not getting charged correctly! I was and am using OEM charger! So charger problem was out of the question!
Then I thought that it might be the battery problem, since the phone is now 2 years old! I disassembled my phone out of curiosity to check the status of the battery, has it swelled or leaked! Turns out that the charging port was dead! The litmus dot over the the charging port had turned to pink, symbolizing that some water or moisture had entered in somehow! I went to the nearest Xiaomi Service Station and ordered for the part!
You too can check if this might have happened to your phone too!

pathetic battery

I am on Repulsa rom with mad max kernel. And the battery life is pathetic. From 100 to 20% there is no problem but as soon the battery goes below 20% it will literally go to zero in 10 sec and will shut down. It happens 9/10 times.. As soon as it goes below 20% it will shut down in few seconds.. This is not rom or kernel issue because this has happened with different rom and Kernel too.. If anyone can help it would be of great help..

Battery is badDegraded. common thing with phone batteries. Gotta get the battery replaced

me2151 said:
Battery is badDegraded. common thing with phone batteries. Gotta get the battery replaced
Click to expand...
Click to collapse
Within 10 months?

Dbj.Dhaval said:
Within 10 months?
Click to expand...
Click to collapse
Yep easily possible.

I dunno if this will be covered under warranty.. Also the phone is rooted

Dbj.Dhaval said:
I dunno if this will be covered under warranty.. Also the phone is rooted
Click to expand...
Click to collapse
degraded battery is usually covered but you tripped knox when you installed twrp. so you may not be eligible for warranty

Dbj.Dhaval said:
I am on Repulsa rom with mad max kernel. And the battery life is pathetic. From 100 to 20% there is no problem but as soon the battery goes below 20% it will literally go to zero in 10 sec and will shut down. It happens 9/10 times.. As soon as it goes below 20% it will shut down in few seconds.. This is not rom or kernel issue because this has happened with different rom and Kernel too.. If anyone can help it would be of great help..
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I dont have that much knowledge but i am unrooted and happened to me serveral times as my battery shut downs in 13 percents. I looked for a solution and my issue resolved. Hope if it can help you
Maybe its calibration issue
Maybe your phone thinks 20% is 0
Try using fully discharge your battery until it shutsdown then go to recovery mode and waste the juice until it turn off and dont even boot into recovery. Then charge full with power off and again discharge to 0. Again to 100 and see if problem solves.
If not then maybe issue is with battery

I'm getting 5-7 hours here depending on the usage but to be sure go back to stock room for 5 days and check the SOT BY THE WAY I'm on Lightrom with the mad Max kernel

My phone used to be like this... so annoyed.
I tried everything but no result: using battery calibrate apps or methods, flashing stock rom, reinstalling TWRP,...
I am quite sure when your phone is at 20%-, you can't see battery % in TWRP mode :V.
I think the cause is TWRP ( data can't mount )
Here is what HAPPENED to my phone )
I flashed ECHO rom and my phone got bootloop..."Only official binaries ...."
Fine....too easy to fix... I flashed my stock rom and ta da... My phone's battery was Fixed :V
So ...you can consider bootloop your phone to fix the problem ))) Then wait 7 days without restarting your phone... reinstall TWRP ( "NOUGAT" or "OREO" ). And when you download dm-ver... zip to install TWRP, look carefully for LATEST version "LATEST". And dont update your TWRP or use themes for TWRP (Old is gold, simple is perfection :v , fuctional is too enough)
GOOD LUCK

alextdt said:
My phone used to be like this... so annoyed.
I tried everything but no result: using battery calibrate apps or methods, flashing stock rom, reinstalling TWRP,...
I am quite sure when your phone is at 20%-, you can't see battery % in TWRP mode :V.
I think the cause is TWRP ( data can't mount )
Here is what HAPPENED to my phone )
I flashed ECHO rom and my phone got bootloop..."Only official binaries ...."
Fine....too easy to fix... I flashed my stock rom and ta da... My phone's battery was Fixed :V
So ...you can consider bootloop your phone to fix the problem ))) Then wait 7 days without restarting your phone... reinstall TWRP ( "NOUGAT" or "OREO" ). And when you download dm-ver... zip to install TWRP, look carefully for LATEST version "LATEST". And dont update your TWRP or use themes for TWRP (Old is gold, simple is perfection :v , fuctional is too enough)
GOOD LUCK
Click to expand...
Click to collapse
Why wait 7 days with no reboot? Not needed if it's to make the OEM toggle visible...just wait 7 days or use the date-change workaround. Reboots affect the uptime timer but not the server-side OEM unlock timer.
Dbj.Dhaval said:
I am on Repulsa rom with mad max kernel. And the battery life is pathetic. From 100 to 20% there is no problem but as soon the battery goes below 20% it will literally go to zero in 10 sec and will shut down. It happens 9/10 times.. As soon as it goes below 20% it will shut down in few seconds.. This is not rom or kernel issue because this has happened with different rom and Kernel too.. If anyone can help it would be of great help..
Click to expand...
Click to collapse
Happened to me lately on stock, never rooted. Try turning off quick charge and use normal method instead for a few cycles. Maybe test on stock firmware just to be safe. If no improvement it might be a degrading battery.

I am thinking to factory reset the phone to see if the problem is solved.. N try the solutions offered ie calibration, quick charge off

Dbj.Dhaval said:
I am thinking to factory reset the phone to see if the problem is solved.. N try the solutions offered ie calibration, quick charge off
Click to expand...
Click to collapse
Sounds good, just be careful with calibration...fully charging or discharging the battery reduces it's overall lifespan. Don't do it too often.

I did factory reset including internal storage wipe and calibration Bt still the problem exists.. Now the battery will go down to 15 then directly 14,12,10,5 in seconds even if I connect charger at 15 it will go down till 3%..

Dbj.Dhaval said:
I did factory reset including internal storage wipe and calibration Bt still the problem exists.. Now the battery will go down to 15 then directly 14,12,10,5 in seconds even if I connect charger at 15 it will go down till 3%..
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Click to collapse
Hmm that's frustrating. Not sure if there might be another cause or fix, otherwise might be the battery itself.

sefrcoko said:
Hmm that's frustrating. Not sure if there might be another cause or fix, otherwise might be the battery itself.
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Click to collapse
Yes I also think it's the battery problem

Dbj.Dhaval said:
Within 10 months?
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Click to collapse
Yeah, it can be possible to degrade the battery that quickly.
It usually happens when you let your phone go under 20% frequently or let it die completely before charging it again.
I usually do the lowest 25-30% and the 80+% charge daily, then finally use it all the way to 20% before going to sleep, put it on a slow charger, and by next morning its at 100% without keeping it charged 100% all night (which can also degrade the battery, just a lot slower than discharging it completely.)

I have had my phone a week before it came out and my battery is awesome. It lasts me all day everyday. Best phone I have ever had.