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I've got this problem with my tab (quick battery drainage). Symptoms would be your 100% charged tab would go down to 0% in unusual shorter time ( like 2-4 hours). You put it on charger and tab would be charged back to 100% again in substantial short time like 2-3 hours instead of 6-7 hours.
Well, after looking at this issue I think I have come up with solution.
At least, my tab looks like it's back on track... though, to say for sure I would need another couple days of testing.
The problem is not runaway wild application on a background but battery control circuit. This chip reports to OS much smaller battery capacity as it is for some reason. I will not go into details but here is what you need to try:
Flash stock kernel (may be custom kernel is not the reason for bad chip calibration and I'm 90% positive but just to be on safe side). You don't need to do factory wipe in OEM recovery for our purpose.
You also don't need to wipe batterystats.bin or use "Battery Calibration" apps from market (which does exactly the same wipe just in more end user friendly way). This wipe serves no other purpose then refreshing your usage statistics.
You also don't need to drain your battery all way down... nice, this way you don't have to wait for too long.
Well, here we go:
charge tab somewhere in between 80 and 100%.
edit: remove charger
shutdown tab (not put in hibernate/sleep) for 1 hour.
edit: turn tab on and run it for 30-40 min. or whatever it takes to drop charge to 40-50%.
shutdown tab again for 5 hours (overnight).
turn tab again and check... you should be fine now, charge it again 100% and use as usual.
That should do correct chip calibration.
PS: the reason why this chip calibration went bad at the first still remains open.
EDIT: just want to give a shortcut for those who does not feel like reading through the thread.
http://forum.xda-developers.com/showpost.php?p=16771651&postcount=41
Edit: here is calibration procedure which was modified down this thread ...
1. in CWM/recovery let it sit till battery in terminal will show less then 3700. The less you can get it the better. 3400 is probably absolute minimum.
2. shut down tab and let it sit for 1 hour.
3. plug it to charger and charge it for 5 hours.
4. disconnected charger and let it sit for 1 hour.
5. boot up your tab and test it, it your battery still not calibrated you can flash back your backup and repeat calibration procedure.
Edit: if you physically disconnect battery (you have to disassemble tablet) and keep it for couple min. that would trigger FG chip to start with default SOC curve.
Any follow up? Did this fix work for you since yesterday or anyone else?
yup, this is it...
This is how properly calibrate sg tab's batteries. There are some variations to the process but essentially battery will be calibrated in two measurements which stand apart by minimum 40% when battery is at rest on time intervals 1 and 5 hours.
No need to do factory reset, wipe batterystats, use battery calibrator apps from market or dance around with rain stick... all this will give same result as woodoo magic... though if by some reason battery calibration conditions are met then one may claim a miracle.
*sigh of relief* looks like this worked. More people that have this issue should now about this. Thank you for the fix.
Sent from my DROID2 using XDA App
Is this the same as the Sleep on Death (SOD) syndrome? that while charging it dies overnight and then you have to long press the power button and/or charge it to get it back?
Worked for me so far all good thanks
Sent from my GT-P7510 using XDA Premium App
Thanks will try this after flashing many custom roms I've been suffering from fast drainage which is not normal from when I had it on stock.
hyann said:
Is this the same as the Sleep on Death (SOD) syndrome? that while charging it dies overnight and then you have to long press the power button and/or charge it to get it back?
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Click to collapse
How long your tab usually works on one charge? if 8 and more hours - then no, I would think that there is a bug in Android charger control.
Vlad_z said:
yup, this is it...
This is how properly calibrate sg tab's batteries. There are some variations to the process but essentially battery will be calibrated in two measurements which stand apart by minimum 40% when battery is at rest on time intervals 1 and 5 hours.
No need to do factory reset, wipe batterystats, use battery calibrator apps from market or dance around with rain stick... all this will give same result as woodoo magic... though if by some reason battery calibration conditions are met then one may claim a miracle.
Click to expand...
Click to collapse
May I ask what do you mean by rest time intervals of 1 and 5 hours?
Does it mean that the calibration will only take place when the tab is off for 1 hour, then switch on and used till battery depleted by a further 40% minimum and the switch off for another 5 hour. Correct?
Also , is this 40% refer to value before or after calibration? I asked this because when I restart my tab the value changed (ex: 36% before restart to 53% after restart)
wlighter said:
May I ask what do you mean by rest time intervals of 1 and 5 hours?
Does it mean that the calibration will only take place when the tab is off for 1 hour, then switch on and used till battery depleted by a further 40% minimum and the switch off for another 5 hour. Correct?
Also , is this 40% refer to value before or after calibration? I asked this because when I restart my tab the value changed (ex: 36% before restart to 53% after restart)
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Click to collapse
Yes that's correct.
Fuel gauge chip will take 1 measurement of open circuit voltage and internal resistance only when battery is at rest (no charge/discharge) for at least 40min. - so I say 1 hour just to be sure...
Consecutive measurements, from which gauge chip can derive capacity of the battery have to be at least 40% and 5 hours apart.
Technically speaking, that 40% difference can be in either directions. Say you have 40% as of now, leave it in rest for 1 hour, then charge it to 100% and leave it at rest for 5 hours and you will have same result.
Condition "at rest" means voltage change less then 4mV (or mkV) per sec. - I don't remember.
When tablet is in sleep some background processes may awake tablet briefly and reset the 1 hour counter - so to make it work for sure, simply do shutdown.
if you want additional reading on my findings then look here:
http://forum.xda-developers.com/showpost.php?p=16615800&postcount=517
I tried this method...
1.Charged tab t0 80%, then shut down (removed charger) for 1 hour.
2.Turned on tab and played games for about 45min till battery was 49%.
3.Turned off tab and let sleep for 5 hours (charger still removed).
4.Turned tab back on and battery reads 79%, used for about 20min and battery reads 68%... Seems battery drain is still happening?
Right now i'm charging the tablet back upto 100% then perhaps try this method again... Did I do something wrong?
jzen said:
I tried this method...
1.Charged tab t0 80%, then shut down (removed charger) for 1 hour.
2.Turned on tab and played games for about 45min till battery was 49%.
3.Turned off tab and let sleep for 5 hours (charger still removed).
4.Turned tab back on and battery reads 79%, used for about 20min and battery reads 68%... Seems battery drain is still happening?
Right now i'm charging the tablet back upto 100% then perhaps try this method again... Did I do something wrong?
Click to expand...
Click to collapse
same problem im facing. This is why im wondering is the 40% value of before or after calibration. Because although it might drop 40% before calibration is done, the real drop value might be less then that. Which means to the chip it might just see a drop of example 20% of real drop and hence it didn't perform the calibration because conditions of 40% is nt met.
I did forget to flash back to the stock kernel (using pershoot's).
I just flashed to doc's slim 6.5 which has a modified stock kernel (couldnt find just the stock kernel and my internet is too slow to download the entire stock rom.). Going to try this method again but starting at 40%
1.Battery at 40%, shutdown tablet for 1 hour.
2.Charge tablet to 100% (while shutdown)
3.Leave tablet shutdown for 5 hours
4.Pray to droid gods, find my rain stick and begin dark resurrection ritual while watching true blood.
My only question now is... Should I turn the tablet back on after the 1 hour shutdown? Or should I leave it shutdown and just plug in charger till its 100% charged, then let it stay shutdown for 5 hours?
This is what worked for me:
1. Charged tab to 100% removed from charger.
2. Power down for 1 hour.
3. Power on (tab at 96%)
4. Drain to 46%
5. Power off for 5 hours
When I powered the tab back on after the 5 hours, i used it for a while and rebooted and the battery reading stayed the same which it wasn't doing before the calibration. It has been draining and charging at a normal pace since then and has remained the same after reboots and ROM flashes since the calibration.
FillTheVoid said:
This is what worked for me:
1. Charged tab to 100% removed from charger.
2. Power down for 1 hour.
3. Power on (tab at 96%)
4. Drain to 46%
5. Power off for 5 hours
When I powered the tab back on after the 5 hours, i used it for a while and rebooted and the battery reading stayed the same which it wasn't doing before the calibration. It has been draining and charging at a normal pace since then and has remained the same after reboots and ROM flashes since the calibration.
Click to expand...
Click to collapse
I'm going to go ahead and try this method right now! But for me... sometimes my battery will not charge unless the unit is shutdown (ever since battery issues started.). I hope this time it will charge while its on.
Also the instructions say to flash the stock kernel before trying this method... Did you do this? And were you able to flash back to pershoot's without issue?
*Update:
It doesn't look like its charging, (system on). Should I just shutdown and charge it to 100%? Then continue with said method? Anyone know if this method will work while tablet is shutdown through the entire process?
jzen said:
I'm going to go ahead and try this method right now! But for me... sometimes my battery will not charge unless the unit is shutdown (ever since battery issues started.). I hope this time it will charge while its on.
Also the instructions say to flash the stock kernel before trying this method... Did you do this? And were you able to flash back to pershoot's without issue?
Click to expand...
Click to collapse
My tab was charging while on, sometimes it wouldn't show it till after a reboot. I did mine from stock 3.1. (A backup I made before I took the TW OTA) I have not re-flashed pershoot's kernel and probably wont till the bug is worked out. I did however flash the deodexed stock TW and flashed a theme and have had no issues.
Edit: if its not chargin while on, i would charge it all the way while off then turn it on so it can read the battery then start the 1 hour power down.
Correction guys...
I was sure that our p7510 model was using TI bq20z75 fuel gauge chip but with new information looks like it's Maxim 17042 chip... It's embarrassing but I have to stay corrected. TI chip would calibrate itself in procedure outlined above as for Maxim - I don't know yet. I'm looking at it.
These are good and bad news. Good one - with this new fact, it's very possible that the reason of chip's SOC counter corruption is in software. Driver for Maxim is pretty messy and complex (because it's messy). In contrast driver for TI is simple and straight forward (because TI chip is smart). Software can be fixed but problem in hardware design not so easy.
Well, I will report back when I find something.
So, will FillTheVoid 's method work with my GT-p7510? :x
Vlad_z said:
Correction guys...
I was sure that our p7510 model was using TI bq20z75 fuel gauge chip but with new information looks like it's Maxim 17042 chip... It's embarrassing but I have to stay corrected. TI chip would calibrate itself in procedure outlined above as for Maxim - I don't know yet. I'm looking at it.
These are good and bad news. Good one - with this new fact, it's very possible that the reason of chip's SOC counter corruption is in software. Driver for Maxim is pretty messy and complex (because it's messy). In contrast driver for TI is simple and straight forward (because TI chip is smart). Software can be fixed but problem in hardware design not so easy.
Well, I will report back when I find something.
Click to expand...
Click to collapse
A lot of this is way over my head, but my battery calibration seems to be accurate, although I can't be absolutely sure because I have no stats from the previous calibration to compare it to. I do know for sure that after this process the bug of it draining then after reboot going back to what it should be is gone.
so i guess we need to flash back the stock ROM w/o TW for this procedure to work? I was trying the same steps with StarBurst + pershoot kernel it seem that it doesn't work. Anyone manage to calibrate with pershoot kernel?
Hi guys, I am at my wits end with this stupid phone, If its not one problem its another. I was convinced this phone would have amazing battery life once seeing my cousins AT&T version, I bought the UK T-mobile version and its been plagued with faults. The main fault it has developed now is that it won't charge past 96%, I have configured the battery and installed the 1% battery fix and nothing is happening also my battery has been draining quicker than usual. Sometimes I get 13hrs sometimes I get 7hrs!? Could someone give me some advise? I was thinking of ringing my insurance company for a replacement (as it is with my bank and usually they just replace the phone)
amzter said:
Hi guys, I am at my wits end with this stupid phone, If its not one problem its another. I was convinced this phone would have amazing battery life once seeing my cousins AT&T version, I bought the UK T-mobile version and its been plagued with faults. The main fault it has developed now is that it won't charge past 96%, I have configured the battery and installed the 1% battery fix and nothing is happening also my battery has been draining quicker than usual. Sometimes I get 13hrs sometimes I get 7hrs!? Could someone give me some advise? I was thinking of ringing my insurance company for a replacement (as it is with my bank and usually they just replace the phone)
Click to expand...
Click to collapse
You should probably research a little bit more on the forums as there is a million answers about battery life issues.
here is a guide Fix Battery Life: Ultimate guide (calibrate + post#2 -FIXES)
ClearFire said:
You should probably research a little bit more on the forums as there is a million answers about battery life issues.
here is a guide Fix Battery Life: Ultimate guide (calibrate + post#2 -FIXES)
Click to expand...
Click to collapse
thats the guide I have followed, it does not work for me
amzter said:
thats the guide I have followed, it does not work for me
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Click to collapse
Yes it does. Charge with the phone turned off and it will get to 100%.
Also, read post #2.
xploited said:
Yes it does. Charge with the phone turned off and it will get to 100%.
Also, read post #2.
Click to expand...
Click to collapse
I'm sorry, are you sitting in front of my phone? I have followed this correctly on another atrix and it has worked for them, I don't know why its not working on mine I have followed it through properly.
How long have you had the phone?
One thing we all have to consider is that since the dev community has had to provide "fixes" for the Battery Reading on the Atrix it might be safe to say that at some point the measurement might become too accurate. What I mean by this is, I've had my phone for almost a year now and I'm pretty convinced that the reason my battery won't charge past 97% is because of the natural degradation of the lithium battery. It is a fact that lithium batteries can lose up to 10% of its charge capacity after a year. So I've accepted the fact that my battery just might be losing capacity and the battery mods I have applied to my phone are just that much more accurate.
This reminds me of the recently released Galaxy Nexus and people complaining about the signal and Verizon responded with that the "reading" was too accurate and that they'll release a patch that will basically "lie" to the end user about the strength of their connection.
http://www.androidcentral.com/verizon-galaxy-nexus-signal-strength-its-not-us-its-you
Verizon is just basically saying "Here, let us cripple your phone for you"
amzter said:
I'm sorry, are you sitting in front of my phone? I have followed this correctly on another atrix and it has worked for them, I don't know why its not working on mine I have followed it through properly.
Click to expand...
Click to collapse
I have had the phone for about 3 months now. This is why I am saying its weird. The fact that it dies so quickly is another thing I got about 7 hours of moderate use with about 1hr 45 display time with 10 mins of music and about 10 texts and a few phone calls(about 3 short 5 min ones)l
All of you are talking percent. What is the power level of the battery at max charge? Battery showing charging to 100%, or any other percent, and having full charge are not the same thing.
Assimilated via WinBorg 4G
amzter said:
I have had the phone for about 3 months now. This is why I am saying its weird. The fact that it dies so quickly is another thing I got about 7 hours of moderate use with about 1hr 45 display time with 10 mins of music and about 10 texts and a few phone calls(about 3 short 5 min ones)l
Click to expand...
Click to collapse
Could be a faulty battery. If you've only had it 3 months I would try to get the battery replaced if it has drain issues.
CaelanT said:
All of you are talking percent. What is the power level of the battery at max charge? Battery showing charging to 100%, or any other percent, and having full charge are not the same thing.
Assimilated via WinBorg 4G
Click to expand...
Click to collapse
You make a good point, I use Battery Monitor Widget Pro and keep an eye on usage time rather than battery level.
CaelanT said:
All of you are talking percent. What is the power level of the battery at max charge? Battery showing charging to 100%, or any other percent, and having full charge are not the same thing.
Assimilated via WinBorg 4G
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Click to collapse
The battery never reaches 100 on the phone it will sit there at 96% and even the battery calibration app says the battery isnt at 4200mv (which apparently it should be) its at 4190. I never charge mid way I always let the phone get to about 15% then chuck it on charge.
You make a good point, I use Battery Monitor Widget Pro and keep an eye on usage time rather than battery level.
Click to expand...
Click to collapse
Well I use the internal android one but I want to know whats draining it because today nothing was running, i had everything shut down and frozen that wasn't necessary.
You might need to use a 3rd party app to find the "rogue" app/process. Other than BMW, I also use System Panel to monitor it if I notice my usage time is depleting, it works well. You have to have monitoring activated and it's only available on the paid version, but you can use the free version to manually watch your apps/processes.
amzter said:
Well I use the internal android one but I want to know whats draining it because today nothing was running, i had everything shut down and frozen that wasn't necessary.
Click to expand...
Click to collapse
live4nyy said:
You might need to use a 3rd party app to find the "rogue" app/process. Other than BMW, I also use System Panel to monitor it if I notice my usage time is depleting, it works well. You have to have monitoring activated and it's only available on the paid version, but you can use the free version to manually watch your apps/processes.
Click to expand...
Click to collapse
Ok so I recalibrated the battery and got rid of the 96% freeze but now the drain is quicker than ever :S
have you tried wiping battery stats as well? Also, when you recalibrate, do you go through a couple "full" charge cycles? As in, do you allow the phone to fully discharge and then completely charge it plus at least an extra hour? I know that lithium batteries do not have the "memory effect" but I think it has more to do with software rather than the battery itself.
amzter said:
Ok so I recalibrated the battery and got rid of the 96% freeze but now the drain is quicker than ever :S
Click to expand...
Click to collapse
live4nyy said:
have you tried wiping battery stats as well? Also, when you recalibrate, do you go through a couple "full" charge cycles? As in, do you allow the phone to fully discharge and then completely charge it plus at least an extra hour? I know that lithium batteries do not have the "memory effect" but I think it has more to do with software rather than the battery itself.
Click to expand...
Click to collapse
yeah i do wipe battery stats but the mAh is not going to 4200 its stuck at 4186 nd wont go past 98%
Something else you could try that I've read around here.
1. Charge the battery for like 4 hours until it won't charge anymore.
2. Unplug the phone from the charger, turn it off, and then pull the battery out
3. Plug the phone back into the charger (Do not put the battery back in yet)
4. Wait for the phone to show an image of a battery with a question mark in it.
5. Put the battery back in.
6. Wait for it to recognize the battery, it will probably give a very low percentage like 5% or 10%.
7. Do not turn it on yet, let it charge for another hour or so.
8. Once you return, it will still probably show a low battery reading, ignore that and boot into recovery while it's still plugged in by long-pressing the power button and when you see the green led notification light press and hold volume down
9. Wipe battery stats and then reboot.
10. Wait for it to boot and then unplug it from the charger and check the battery reading.
I really don't understand what this does but I've read it has fixed the issue for some people.
amzter said:
yeah i do wipe battery stats but the mAh is not going to 4200 its stuck at 4186 nd wont go past 98%
Click to expand...
Click to collapse
If I keep my phone on charging even after its on 100%, it starts rolling back. As in from 100 to 99 then 98, even if its pluggen in.
Don't know what kind of a problem this is, hardware or software.
Or there's some issue with the battery.
Please help.
lakshay03 said:
If I keep my phone on charging even after its on 100%, it starts rolling back. As in from 100 to 99 then 98, even if its pluggen in.
Don't know what kind of a problem this is, hardware or software.
Or there's some issue with the battery.
Please help.
Click to expand...
Click to collapse
Sometimes I have the same problem. I dont know if it is caused of a program running in a background or what, but reboot helps
jakuburban said:
Sometimes I have the same problem. I dont know if it is caused of a program running in a background or what, but reboot helps
Click to expand...
Click to collapse
I know the reboot helps.
But usually I put it on charging at night before sleeping.
And when I wake up in the morning, the battery % becomes even less than what it was when i plugged it in.
I'm usually in a hurry then to leave for college in the morning . Can't go to college with battery % less than even 10
Thanks for the reply anyway !
lakshay03 said:
I know the reboot helps.
But usually I put it on charging at night before sleeping.
And when I wake up in the morning, the battery % becomes even less than what it was when i plugged it in.
I'm usually in a hurry then to leave for college in the morning . Can't go to college with battery % less than even 10
Thanks for the reply anyway !
Click to expand...
Click to collapse
Maybe You have some program that syncs something all the time. Did You try to turn off data and wifi. You can always check it if the reason is the hardware or Software. Just make a backup of Your whole ROM, delete the data and leave the phone over night. I hope it is only software problem.
EDIT: Does Your battery go hot while charging? Oh, and try to wipe battery stats
jakuburban said:
Maybe You have some program that syncs something all the time. Did You try to turn off data and wifi. You can always check it if the reason is the hardware or Software. Just make a backup of Your whole ROM, delete the data and leave the phone over night. I hope it is only software problem.
EDIT: Does Your battery go hot while charging? Oh, and try to wipe battery stats
Click to expand...
Click to collapse
Yes, my battery does get hot while charging.
And I did wipe the battery stats but its of no use.
lakshay03 said:
Yes, my battery does get hot while charging.
And I did wipe the battery stats but its of no use.
Click to expand...
Click to collapse
Maybe there is really some program that is causing that. I had this problem rarely so I never cared. I had one program called Batterymonitor or sth. like that and it was the reason. Do You have such a program, that shows Your battery level or temperature?
jakuburban said:
Maybe there is really some program that is causing that. I had this problem rarely so I never cared. I had one program called Batterymonitor or sth. like that and it was the reason. Do You have such a program, that shows Your battery level or temperature?
Click to expand...
Click to collapse
Yes, I have setcpu and rom toolbox.
But would these applications really cause this problem?
Sent from my X10 using XDA
The x10 charges the battery to full then if still plugged in it will stop charging until batt drains to set level ,then will charge to full again and over and over all night. X10 wont over charge batt when left plugged in. Kernel/bootloader handle this. There is an app current widget that can log charge levels.
EDIT: I had a tip on charging here but removed it after further research read more about batt here..
http://forum.xda-developers.com/showthread.php?t=871051
ToledoJab said:
The x10 charges the battery to full then if still plugged in it will stop charging until batt drains to set level ,then will charge to full again and over and over all night. X10 wont over charge batt when left plugged in. Kernel/bootloader handle this. There is an app current widget that can log charge levels.
EDIT: the best tip I usr for battery life is, let batt runout until phone shuts off, then pull batt, then plug in charger, then replace batt into phone, then phone will boot, enter xrecovery on first boot and wipe batt stats. After wipe while still in xrec pull batt then unplug. Now plug in phone then insert batt. Phone should boot in charge mode( big batt icon only on screen) dont start phone untill light green for 1-2 hours to get full charge . I do this about once a month, when phone starts to shut off around 15%
Sent from my X10S using XDA
Click to expand...
Click to collapse
As mentioned above as well, this is normal. After charging to 100%, the phone stops battery charging, and will activate charging again only when battery falls a bit (say 97%). Also, battery heating while on charging (and also when using the phone continuously while playing a game) is normal. Relax.. your phone is fine
@ToledoJab
I am having the same issue with battery... phone switching off at 15%, even at 22-23%, when playing a game or something. But switching it back on, and leaving it idle, phone might run for another 2 hours. So it is the extra load while running a game that the phone cant take any longer (i remember getting the 15%,10% and 5% reminders earlier while playing games)...? Does the battery calibrate method actually help in your case? does it go all the way down to 0% or 1% before shutting down.. ?
I just did this after posting that. And yes my phone reported warnings @ 25% 15 10 5 and then shutdown @ 1%.
This way is like reconditioning an old rechargeable ni-cad batt.
All this does is completey drain batt then, with least amount of drainage (phone on, apps& radios running) allows battery to full charge.
There is also a way called recalibrate battery. But this way over charges the batt.
EDIT: I think the phone load will effect reported batt left. I think batt gage use average loads to estimate remaining power. Meaning games, full brightness of LCD, radios -3g -GPS -WiFi -Bluetooth will use more than avg power
edit 2: I found this thread also has some very good points and links. after reading this i will not intentionally take my batt to 0%. I hit 0% about 1-2 times a month on accident as it is. i will just make sure when i do go 0% to wipe stats (dont know if it helps or not) then preform a long (overnight) full charge with phone off.
http://forum.xda-developers.com/showthread.php?t=1445698
SORRY for ranting on about this, i thought i was smart but i am still/always learning.
From my XPERIA X10S v8.2 on kCernel @ 1.19ghz
Having issues with roms lately. Some roms won't even give me 2 hours of battery life. (Maybe 4 hours even in standby!!)
Talked to Motorola over the phone they think maybe it's the battery, they sent me a free one but I still have the same issues.
Sometimes I look at my phone and it has already been drained. Then I see that standby has taken up 75% of the battery. Like wtf lol.
So the question is, what is the best ROM for battery life?
Thanks.
Neutrino v2.9
Make sure you install bluesleep fix if the rom you are using doesn't have it....
For me the best results have: "old" ALIEN and CM7 !!!
CM7 - 1day and 27minutes with 7hours and 28minutes screen on (30-35% luminoziti)
Sorry for english!
Atrix - "CM7"
Seeing as it happens with every ROM, you may try to calibrate your battery, it may help. Download 'Battery Calibration' app from the Play Store and follow the in-app instructions. I always calibrate mine after changing ROMs exactly because problems like yours happened to me in the past.
MaxK47 said:
Seeing as it happens with every ROM, you may try to calibrate your battery, it may help. Download 'Battery Calibration' app from the Play Store and follow the in-app instructions. I always calibrate mine after changing ROMs exactly because problems like yours happened to me in the past.
Click to expand...
Click to collapse
That app does not calibrate the battery. All it does reset the previous battery usage graphic table.
Sent from my MB860 on CM10 (Epinter)
Soldier-2Point0 said:
That app does not calibrate the battery. All it does reset the previous battery usage graphic table.
Sent from my MB860 on CM10 (Epinter)
Click to expand...
Click to collapse
But it helps. If I don't do it, after 2~3 flashes of different ROMs I start to have huge drops (staying at ~80% for 6 hours, then instantly dropping to 20%) or the system misreads the actual battery capacity (turning off with at least 30% battery remaining, for example).
Have you tried wiping battery stats?...
Charge the phone as far as it will go (lets say over night)(also if you need to plug the phone into the charger after it has charged over night without the battery in it so you get he battery with a question mark, then put the battery in and it should show like 5% battery or something then let that charge as long as it will, which is usually around 15% if i remember correctly), then wipe battery stats in cwm or whatever way you prefer. Reboot the phone and use it until it is completely dead (0% battery and the phone shuts itself off and wont turn back on, but do not try to drain the battery using video loops or anything, just use it like you normally do. Then charge it up to 100% but do not turn it on, let it stay on the charging screen until it gets to 100% and dont use or unplug it at all. It should take longer to get from 99% to 100%, just be patient Hopefully that solves the issue.
I decided to replace my 2+ year old Atrix battery with an OEM battery. Since then I can charge to 100% just fine (ran the battery fixing apps and did a wipe battery cache thing) but the battery discharges visibly, like down 4% for a single google search, and gets stuck at 1% for many hours. I used an app to see the voltage and it tops out at 4.2v and levels out at I think 3.5v and dies around 3.2-3v if I remember correctly. Anyway, I just don't know how long the phone will last but it is lasting most of the day. Even turning setcpu off I run for hours with a battery drain app and stay at 1%.
Using MROM-1-0.20120505-olympus. I think this is still considered CM7.
Kernel 2.6.32.59-MB860-MROM-ga43d614.
I dont see your question...
Any way I think you need a few charge-discharge cycles to make your battery statistics work.
Wrong section dude
Sent from my MB860 using xda app-developers app
moderaterain said:
I dont see your question...
Any way I think you need a few charge-discharge cycles to make your battery statistics work.
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Okay, the question is what can I do to make the drop more linear rather than going from 100 to 1 in an hour and staying at 1 the rest of the day.
And I've charged discharged half a dozen times with no change.
As you have tried, I don't have better ideas.
I like checking the voltage reading, rather than the percentage value. It usually makes more sense above 3.6V.
Delete all files (or even better copy somewhere for backup) in /data/battd/. Turn off your phone, charge it few hours after led become green, remove battery with charger connected, wait for "?", place battery again and charge it for about 1 hour, turn phone on with charger connected, check battery level, wait to 4200mV and 100%, finally disconect charger. Use phone without recharging until it turn itself off or reach 1%. Then charge it and use normally.
I did it with new battery and now works great, charge to 4200mV, 100% and discharge to 1%
Zeljko1234 said:
Delete all files (or even better copy somewhere for backup) in /data/battd/. Turn off your phone, charge it few hours after led become green, remove battery with charger connected, wait for "?", place battery again and charge it for about 1 hour, turn phone on with charger connected, check battery level, wait to 4200mV and 100%, finally disconect charger. Use phone without recharging until it turn itself off or reach 1%. Then charge it and use normally.
I did it with new battery and now works great, charge to 4200mV, 100% and discharge to 1%
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Click to collapse
I have the EXACT same problem as original poster, and i see my battery dying to 1% within couple of hours, and then remaining on 1% for rest of the day! This is misleading and most of time i have no idea how much more my phone will go on. All this despite the fact that i bought my battery paying 35 bucks to get it directly from Amazon!
Tried doing what Zeljko1234 has said in his post above, but to no avail. The problem remains as it is. Anybody else faced this issue and found a resolution? Will hard reset or rooting help? Appreciate any help