I'm aware that this problem has happened to others, and I have seen solutions for this problem, but every fix I've come across works temporarily...and by that I mean a day or two.
While using my Atrix HD, when the battery reaches between 20-35%, the battery will suddenly drop to 0% and shut down. This usually occurs when I am using an app, such as MixZing or the camera app. Any attempts to turn the phone back on cause it to shut off again as soon as the boot animation finishes. The only way to keep it on is to plug it into a charger, and when it does boot, the battery shows the same percentage it had when the phone conked out on me. I've even tried calibrating the battery using NèMa's Battery Calibration app, and the problem still occurs...mainly because I can't get the battery to drain completely so I can properly calibrate the battery.
Long story short, I need a fix, or at least a suggestion as to how I can keep this problem at bay. Does anyone have information regarding this problem?
did you ever wipe the battery data when you flashing a new rom ?
I think you need to re-reconigz the battery .
lounew said:
did you ever wipe the battery data when you flashing a new rom ?
I think you need to re-reconigz the battery .
Click to expand...
Click to collapse
Agree. In cwm there is an option to wipe battery stats.
I had a similar problem with my HTC First where at 25 % it would go straight to 10 an then to 0 in like 30 seconds...although that was on stock rom...
Do you have the m40 battery mod from maxx?
Just curious
TecknoFreak said:
Do you have the m40 battery mod from maxx?
Click to expand...
Click to collapse
Just curious (I am new here, hi :3)
What is the m40 battery mod?
Sorry i ment eb40
http://forum.xda-developers.com/showthread.php?t=1906371
TecknoFreak said:
Sorry i ment eb40
http://forum.xda-developers.com/showthread.php?t=1906371
Click to expand...
Click to collapse
I don't use the eb40 mod, it's all stock hardware. Haven't tried wiping the battery stats, though; can't believe I overlooked that. I'll give it a shot and see if it does the trick.
EDIT: CWM doesn't seem to have an option for wiping battery stats for this phone; I've tried three versions and none of them give me that option.
MysticRhythms87 said:
I don't use the eb40 mod, it's all stock hardware. Haven't tried wiping the battery stats, though; can't believe I overlooked that. I'll give it a shot and see if it does the trick.
EDIT: CWM doesn't seem to have an option for wiping battery stats for this phone; I've tried three versions and none of them give me that option.
Click to expand...
Click to collapse
I suggest you first write down the current battery volume , for example , now in the system ,you can see 60% battery left .
then you shut down the phone , connect your changer , the phone will change and the battery volume show . if this volume is not equal to the No. you see in the system , it means that your system have a wrong battery data record .
lounew said:
I suggest you first write down the current battery volume , for example , now in the system ,you can see 60% battery left .
then you shut down the phone , connect your changer , the phone will change and the battery volume show . if this volume is not equal to the No. you see in the system , it means that your system have a wrong battery data record .
Click to expand...
Click to collapse
Shut down my phone, battery was at 91% (had charged it overnight). Plugged it in and the charging screen showed 90%. Is that what you were talking about, with the two battery volumes not being the same?
I think it's fixed!
I did a full system reset (including formatting the system, which I apparently had yet to do throughout all this time) to install a new ROM. Today the battery drained all the way down to 2% while I was browsing the web (something that normally would shut off the phone at around 30%) before shutting off. It seems that by skipping that crucial step, the system could not properly read/calibrate the battery when installing a new ROM, which may have caused this problem.
I think it's safe to say it's fixed. For now, at least, but I'm remaining optimistic. Thanks to everyone who pitched in with an idea or just said a few words; great to know people care around here.
MysticRhythms87 said:
I did a full system reset (including formatting the system, which I apparently had yet to do throughout all this time) to install a new ROM. Today the battery drained all the way down to 2% while I was browsing the web (something that normally would shut off the phone at around 30%) before shutting off. It seems that by skipping that crucial step, the system could not properly read/calibrate the battery when installing a new ROM, which may have caused this problem.
I think it's safe to say it's fixed. For now, at least, but I'm remaining optimistic. Thanks to everyone who pitched in with an idea or just said a few words; great to know people care around here.
Click to expand...
Click to collapse
I'm glad that you fixed it. I did the same but I still have that problem. When It's 20% it drops to 15% and then to 5% in 30 seconds.
Arjomer said:
I'm glad that you fixed it. I did the same but I still have that problem. When It's 20% it drops to 15% and then to 5% in 30 seconds.
Click to expand...
Click to collapse
Thankfully, I haven't had it drop that low that fast. Of course, this IS the Atrix HD, which carries such a weak battery compared to other phones in its class. Nevertheless, I feel great knowing that my phone doesn't shut off so unexpectedly. If it happens again, I'll do my best to deal with it, but for now...it's just success.
I had this problem after i force rebooted my phone, it got stuck at 1% when charging for almost 15mins. I had to turn the phone off.
MysticRhythms87 said:
Shut down my phone, battery was at 91% (had charged it overnight). Plugged it in and the charging screen showed 90%. Is that what you were talking about, with the two battery volumes not being the same?
Click to expand...
Click to collapse
for my understanding ,before you shut down the phont , you saw the batter volumes in system is 91% , and then you shut down the phont ,plug it in , and see the battery volume is 90% .I think in this situlation , the battery record in your system is correct ,cause 90% and 91% almost the same . I think your battery is dying , you should replace your battery
lounew said:
for my understanding ,before you shut down the phont , you saw the batter volumes in system is 91% , and then you shut down the phont ,plug it in , and see the battery volume is 90% .I think in this situlation , the battery record in your system is correct ,cause 90% and 91% almost the same . I think your battery is dying , you should replace your battery
Click to expand...
Click to collapse
Well, a couple weeks later and I'm still not having the problem. The battery does still drain relatively fast (I go from 100% at about 9:00 A.M. to 35% at 3:00 P.M, with minimal usage such as checking Facebook/Twitter and stuff like that), but that's mostly due to the small battery capacity. The battery health is still good according to the scans and hardware checks I've done. I may, however, look into trying the EB40 mod if it means the battery will last much longer.
MysticRhythms87 said:
Well, a couple weeks later and I'm still not having the problem. The battery does still drain relatively fast (I go from 100% at about 9:00 A.M. to 35% at 3:00 P.M, with minimal usage such as checking Facebook/Twitter and stuff like that), but that's mostly due to the small battery capacity. The battery health is still good according to the scans and hardware checks I've done. I may, however, look into trying the EB40 mod if it means the battery will last much longer.
Click to expand...
Click to collapse
did you ever try to flash a new rom , you can try , if the problem still there , there is no doubt that the battery is bad .
Related
Hello,
I recently got my nexus, and rooted only two days after receiving it. I installed cyanogen's latest. I am getting low battery; in only 5 or so minutes, the percentage goes down by at least 2 percent (while using). I looked to see what may have been draining the battery, and found that the display alone was using 62% to 75% of my battery. I tried undervolting, but the display seemed to still be in the same draining range...
Is this a hardware related problem, or is this a common nexus thing?
ywindlass said:
Hello,
I recently got my nexus, and rooted only two days after receiving it. I installed cyanogen's latest. I am getting low battery; in only 5 or so minutes, the percentage goes down by at least 2 percent (while using). I looked to see what may have been draining the battery, and found that the display alone was using 62% to 75% of my battery. I tried undervolting, but the display seemed to still be in the same draining range...
Is this a hardware related problem, or is this a common nexus thing?
Click to expand...
Click to collapse
same here, really starting to piss me off when i see people talking about 70% battery at the end of the day while my phone dies in 6 hours
Cyan?
Woah, I think this might actually be cyan's Rom.
I flash enomther's rom and i got display percentage at around 15-16% ...
I think cyan will look into this soon enough...
But for now... I guess I'm gonna wipe... :/ and stick to enom's or some other ROM...
ywindlass said:
Woah, I think this might actually be cyan's Rom.
I flash enomther's rom and i got display percentage at around 15-16% ...
I think cyan will look into this soon enough...
But for now... I guess I'm gonna wipe... :/ and stick to enom's or some other ROM...
Click to expand...
Click to collapse
C´mon....see my signature!
More than 10h now, Wifi on all the time -> 70% battery
This is not that bad
rori1 said:
C´mon....see my signature!
More than 10h now, Wifi on all the time -> 70% battery
This is not that bad
Click to expand...
Click to collapse
I think the problem is only with a few people, but I know others are experiencing this. This might be something with the "latest" nexi. But idk, it's a mutual issue, a fix should be coming
Probably you are right...
But, I would like to know, what settings peolple use: like updating wheater every hour, emails, widgets,..ham many apps are running and so on, ... perhaps connected to...sometimes people dont even know that
Edit: I got my Nex in january.
The change in the display usage percentage is just due to the way the powermanager works. Its not using more battery, its just displaying how much power it is using more accurately.
have the same problem.
100% airplane mode ON no WIFI, in 5 hours 72% battery remains . (PHONE IDLE took most of this - my G1 could go 1 month with this settings)
IN 12 hours in was 6% and with LOW use of my N1.
Yesterday I removed numbers in my battery and it was a litle better, not much but a little. (about 8% better)
I had 5.0.5.1, 2 and 3 and everyone had the same problem!
CM please take a look at this. What do you need any LOG info or something!
Have you tried wiping battery stats, then charging to 100% with it off, then booting into recovery and wiping battery stats again, then charging to 100%? The few times I've had battery issues that's taken care of it for me.
I flashed cyan again with a wipe (again), but got the same thing.
On enom's rom, I get beastly battery. I think we just have to wait for a fix for the people who are affected.
danguyf said:
Have you tried wiping battery stats, then charging to 100% with it off, then booting into recovery and wiping battery stats again, then charging to 100%? The few times I've had battery issues that's taken care of it for me.
Click to expand...
Click to collapse
Do you need root to wipe battery stats? how do you do it?
Well I did the wipe battery about 3 times and in OS it was already green light 93% full.
I WIPED and put the power in on NON POWERED PHONE. It took 1 hour more to come to the green light . than I wiped again and went to boot up.
at 11PM i had 100% battery went into airplane mode wifi OFF.
And i did one other thing. Some of you had the battery drain issue with trackball wake. So I disable it.
7 hours of this and I got 97% - beautiful
before that I had 72% so there is a difference.
Now I have to see if the wakeup trackball is the cause of this or the wiping the battery stats.
Will eliminate one and other and keep you posted
I took my phone off the charger at 4:30am and the next day at 5:30 am i had 12% battery left. i used my phone a total of 3 times. most of the time it was on standby. i have setcpu with my phone UV and UC to try to save battery with profiles set up. in battery information 85% of the phones battery went to cell standby. Any suggestions on how to improve this?
Try wakeup trackball OFF in spare parts and battery % OFF in upper taskbar.
I have now from 100% to 59% in 7 hours. wifi ON all the time.
I have tried to wipe battery settings and charge fully with the phone off, but after the full procedure, I still get the same end result. I attached a picture of my battery usage.
Im pretty sure i saw a post online about the newer nexus's that were released having a better display. If this is true then wouldn't the phone's hardware alone be using more battery?
I can confirm I am having the same problem. I wasn't sure until I checked battery usage overnight. It used to be that with my phone on airplane mode I would use about 2% while I slept. Now, it's 9 or 10% with "Phone Idle" taking the lion's share of it.
I have tried deleting batterystats.bin after a full charge; powering off (while on charger); charging up to full again, but this has not solved the problem.
A few notes:
When the phone is idle (but not in airplane mode) it uses about 1.5% per hour (compared to about 1.1% in airplane mode)
I am using setcpu profiles to keep cpu usage right down when idle
Around the same time I upgraded to 5.0.5.3 I also started using the himem version of fastboot. And yes, if you suspect I don't know what I'm talking about here, you are quite right
For my next trick, I will try resetting battery statistics via recovery. What fun!
I've kept the cyan rom, and changed some settings to increase battery life. I turned off the battery percentage icon, and turned off the trackball to wake. I still got that the display was using a lot, but the battery still lasted pretty good. I guess there isn't too big of a problem on my side. It probably is the "newer displays" on the "newer" nexi. Maybe there really isnt a big problem
I changed now from CM to Enomther's TheOfficial Nexus1 1.8.1 and battery now works great.
I unplugged the charger at 12.00 am at midnight and with quite good use, not extremely havey but a good use I had 30% battery left at 20:00 (08:00PM) that day.
I lost only 2% from midnight to 7:00AM in my airplane mode and with Gmail check 10 min of phone calls wifi ON all the time checking web pages and showing off my live wallpapper at my work I had at noon (12.00PM) 70% battery left!
I LIKE IT!
now I'm thinking to push Kernel - .32 & .33 to see if there is any change with my battery
http://forum.xda-developers.com/showthread.php?t=653598
After resetting battery stats in recovery, I still lost about 10% overnight while on airplane mode.
For my next trick, I'll use a task killer like "Process Manager"* to keep everything unnecessary switched off overnight. Maybe I'll be able to narrow it down to an application if it's not something integral to the actual ROM.
*Yes, I know it will use up the battery too
Hi Guys!!
i've done what this link told
http://forum.xda-developers.com/showpost.php?p=10092321&postcount=11053
but everytime i reach 100% and unplug the charger, my battery percentage immediately shows 97%, be it charging with the phone off or on....
i already did wipe my battery stats in recovery a few times, the first time only it showed that the stats were wiped, after that every time i wipe the stats, it immediately goes back to the previous menu, without stating whether the wipe was carried out or not....
can someone help this noob out here.... thnx
FYI, i just installed darky's rom v8.0 with Voodoo's kernel 5.2(lagfix disabled)
when i was on stock, my 100% could last me about nearly half an hour
I have this problem too. (I am on Darky 9.02 and have seen it in Darky 8.0 too). BUT if your battery life is satisfactory then don't worry about it.
hows the performance on v9.02 bro?
mab71 said:
hows the performance on v9.02 bro?
Click to expand...
Click to collapse
Here is another post on calibration (from Darky himself)
http://darky.ficeto.com/community/index.php?threads/guide-how-to-calibrate-your-battery.321/
mab71 said:
hows the performance on v9.02 bro?
Click to expand...
Click to collapse
9.02 is good but then so was 8.00. I personally think 8.00 was faster but its only been a few days and am still experimenting. I may remove the lag fix and still need to see if my battery is draining faster.
Also look at this post: Has some interesting but unverified info about the drop from 100% to 97/98% after unplugging
http://darky.ficeto.com/community/i...-how-to-calibrate-your-battery.321/#post-3839
Do you really want it on 100%? Easy, once it says charged, leave it on the charger for another hour and when you unplugged it should stay 100 for a while
Sent from my GT-I9000 using XDA App
Problem posted hundreds of times along with solutions like search the Rom makers forum and read the posts re this problem for starters .
Simple solution save time and effort is to ignore it .
jje
thanx all for the advices.... tried the QueenAmy method, result is:
heavily used phone: battery 'died' at 2%(???)
charged phone until 100%(phone off)
switched phone on while still charging: 97% (didnt have to unplug charger)
waited...then it went from 97% straight to 100%.(funny)
then went into recovery to wipe bat stats.
rebooted and unplugged charger, battery still at 97%....
now trying to charge a bit more longer to see if can change anything... (fingers crossed)
icejagans said:
Do you really want it on 100%? Easy, once it says charged, leave it on the charger for another hour and when you unplugged it should stay 100 for a while
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
not working bro...
left it on for about an hour, unplugged, straightaway the percentage drops to 98...
It's just a change in 2.2.1.
In 2.1/2.2, they 'stretched' out the battery life a bit to mark it up to 100%, in 2.2.1 they decided to just show it at the actual value. The reason your battery won't charge to 100% is to prolong the battery life, because if the charger always charged to 100% it would have a high chance of overcharging and damaging your battery over time.
There's no real change in battery life.
I reverted back to 2.2 and still have the problem. Maybe i shouldve flashed on 100% battery... Is it possible to solve if i do another fresh flash with 100% battery?
Sent from my GT-I9000 using XDA App
nwsk said:
It's just a change in 2.2.1.
In 2.1/2.2, they 'stretched' out the battery life a bit to mark it up to 100%, in 2.2.1 they decided to just show it at the actual value. The reason your battery won't charge to 100% is to prolong the battery life, because if the charger always charged to 100% it would have a high chance of overcharging and damaging your battery over time.
There's no real change in battery life.
Click to expand...
Click to collapse
Just to clarify this, you actually cant over charge the battery on the SGS nor Li-Ion for that matter, what happens here is that the battery goes on trickle charge pre 2.2.1 and battery degrades faster if its kept at 100%, 40% is optimal for storage now with the recent changes the phone will pretend it has charged upto 100% but will stop anywhere from 99~97% yes there is no loss in battery life but dont consider 97% as the new 100%, theres already a 3% loss in this to begin with.
EarlZ said:
Just to clarify this, you actually cant over charge the battery on the SGS nor Li-Ion for that matter, what happens here is that the battery goes on trickle charge pre 2.2.1 and battery degrades faster if its kept at 100%, 40% is optimal for storage now with the recent changes the phone will pretend it has charged upto 100% but will stop anywhere from 99~97% yes there is no loss in battery life but dont consider 97% as the new 100%, theres already a 3% loss in this to begin with.
Click to expand...
Click to collapse
thanks Earl.... but is there a solution for my prob here, or do i just have to ignore it?
thanks Earl.... but is there a solution for my prob here, or do i just have to ignore it?
Is not a problem its the current design .
all the other millions of posts on the subject no way found to increase the figure .
jje
thnx mate.... i guess i'll just have to chill about this....n stop wasting my time right... ;-)
I recently installed Serendipity and made sure the battery was at 100% while doing so (and deleted the battery file). I'm waiting for the battery to drain before I plug it in. Am i supposed to let it charge all the way again? Also, is it safe to reboot the phone while it is draining the first time? I want to install something using clockwork.
I'm being careful about this because cognition would report 14% battery life after 33 minutes of display usage and display eating up 96% of my battery....
killsto said:
I recently installed Serendipity and made sure the battery was at 100% while doing so (and deleted the battery file). I'm waiting for the battery to drain before I plug it in. Am i supposed to let it charge all the way again? Also, is it safe to reboot the phone while it is draining the first time? I want to install something using clockwork.
I'm being careful about this because cognition would report 14% battery life after 33 minutes of display usage and display eating up 96% of my battery....
Click to expand...
Click to collapse
There's a complete thread on this, I suggest you look it up.
After you reset your battery stats, it is suggested to do a few full battery circle (use til dead, full charge, rince and repeat). You should be fine after 2-3 circles.
Note tho that it will not improve your battery life. All it does is a attempt to tell your phone what % your battery life is exactly.
For your fast drain, I don't think it has anything to do with your battery calibration or your ROM. It's most likely a app (or a few) that are draining alot of juice or that are running w/o realy being needed. (Check your running services.. make sure you know which one to stop and not to***)
Also using a app/widget like advanced task killer can help your battery life as it will stop every app running with a simple touch. I suggest doing it anything you're not using your phone.
One last thing, display eating 96% of your battery is normal.. it's not telling you it's using 96% of your battery. It's telling you that during the time your phone as been unplugged, your display use was your main action.. probably cause you didn't make many calls or anything else.. Display is just about everything you do with your phone so it will always have some high numbers like that.
BWolf56 said:
There's a complete thread on this, I suggest you look it up.
After you reset your battery stats, it is suggested to do a few full battery circle (use til dead, full charge, rince and repeat). You should be fine after 2-3 circles.
Note tho that it will not improve your battery life. All it does is a attempt to tell your phone what % your battery life is exactly.
For your fast drain, I don't think it has anything to do with your battery calibration or your ROM. It's most likely a app (or a few) that are draining alot of juice or that are running w/o realy being needed. (Check your running services.. make sure you know which one to stop and not to***)
Also using a app/widget like advanced task killer can help your battery life as it will stop every app running with a simple touch. I suggest doing it anything you're not using your phone.
One last thing, display eating 96% of your battery is normal.. it's not telling you it's using 96% of your battery. It's telling you that during the time your phone as been unplugged, your display use was your main action.. probably cause you didn't make many calls or anything else.. Display is just about everything you do with your phone so it will always have some high numbers like that.
Click to expand...
Click to collapse
Yeah, I've seen the thread before but forgot about it. Thanks for reminding me. And my point about the display was that it was on for such a short amount of time, yet still killing my battery.
I am now down to 30% or so after 3 hours or more of display time after calibration & rom switch- and I was streaming music through WiFi and using Bluetooth headphones. So it it seems like it made a huge difference =D
Thanks
it was revealed by "Dianne Hackborn" from google android team a while ago. i'm posting it here because some of p970 users still doing this calibration thing.
here is the post:
"The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/ directory."
No, it does not.
This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.
That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away.
Click to expand...
Click to collapse
murrun said:
it was revealed by "Dianne Hackborn" from google android team a while ago. i'm posting it here because some of p970 users still doing this calibration thing.
here is the post:
Click to expand...
Click to collapse
lol you got it all wrong. he says that the battery indicator has nothing to do with tje battery stats app and then explains whar battery stats app does. this has nothing to do with calibration and if you still think calibration is useless then do a simple check. after a period of not calibrating your battery and using your phone heavily (2-3 hours of gaming for example), or even better after using your phone extensively while charging, let it go to full 100%. At that point when the phone thinks that it is full it stops charging cause the integrated safety tells it that it is full. turn off the phone remove battery for a couple of minutes and then insert it and plug it on charger. you will notice that it is charging again. turn it on withou unplugging and see the battery level. can be as low as 80ish %. which means that if you hadnt done that all that juice would not charge and be left unused. try it...
jimakos29 said:
lol you got it all wrong.
Click to expand...
Click to collapse
Well, no, actually you did. What she said was that deleting the batterystats.bin does nothing more that resetting the battery usage tracking. She also said what's in the file and it sure looks like it could not even be used for anything else. You could check the code to see. Otherwise, just trust her.
1aca said:
Well, no, actually you did. What she said was that deleting the batterystats.bin does nothing more that resetting the battery usage tracking. She also said what's in the file and it sure looks like it could not even be used for anything else. You could check the code to see. Otherwise, just trust her.
Click to expand...
Click to collapse
yeah but calibration is not about battery stats. is about geting your phone to understand that it is not fully charged yet even though it thinks it is. try what I suggested and you will see. the apps for calibration do nothing as they say when it is fulmy charged leave it for some more till the program tells you it is ok. actually when phone perceives itself as charged it stops charging so those programs do nothing. It is all about forcing it to fully charge once in a while (I do it once a month) by removing battery once it says it is charged and reinserting after a few minutes and recharge it and then repeating until the time that i plug it and it wont charge anymore. wiping battery stats is NOT calibrating never was or never considered calibrating. and the thread was about how calibration doesn't work (which does) not about how battery stats wiping doesn't work (which it doesnt)... so if op doesn't distingush between calibration and battery wiping and refera to the latter as the former then it is not my fault. To sum up,what the op said was that we shouldnt do calibrations because wiping battery stats doesn't work and what I said was that battery stats has nothing to do with calibration.
i'm not android veteran. but when i came across "batery calibration" term, it means "removing batterystats" at this community. so, i gues my point isn't that wrong.
murrun said:
i'm not android veteran. but when i came across "batery calibration" term, it means "removing batterystats" at this community. so, i gues my point isn't that wrong.
Click to expand...
Click to collapse
well unfortunately it is not. by all means try what i said and you will see that although your battery appears charged it will charge some more and again and again before it stops charging and is really full. if i doesnt then it is calibrated if not it getsvcalibrated when after inserting it, it wont charge anymore. then after some time again (maybe a month maybe less) you will see it happening again. trust me batteries is what I make a living from.
I don't see how calibrating could hurt so if you think it helps do it. If you don't, then leave it. I did it after flashing and no ill effects.
jimakos29 said:
yeah but calibration is not about battery stats. is about geting your phone to understand that it is not fully charged yet even though it thinks it is. try what I suggested and you will see. the apps for calibration do nothing as they say when it is fulmy charged leave it for some more till the program tells you it is ok. actually when phone perceives itself as charged it stops charging so those programs do nothing. It is all about forcing it to fully charge once in a while (I do it once a month) by removing battery once it says it is charged and reinserting after a few minutes and recharge it and then repeating until the time that i plug it and it wont charge anymore. wiping battery stats is NOT calibrating never was or never considered calibrating.
Click to expand...
Click to collapse
That's just plain wrong. Shall I link to a few respected "battery calibration" tutorials that revolve around deleting the batterystats.bin? Heck, there's even an option for it in CWM Recovery.
jimakos29 said:
and the thread was about how calibration doesn't work (which does) not about how battery stats wiping doesn't work (which it doesnt)... so if op doesn't distingush between calibration and battery wiping and refera to the latter as the former then it is not my fault. To sum up,what the op said was that we shouldnt do calibrations because wiping battery stats doesn't work and what I said was that battery stats has nothing to do with calibration.
Click to expand...
Click to collapse
So what do you think happens when you remove the battery from your phone for a few minutes then put it back?
Battery Stats myth
1aca said:
That's just plain wrong. Shall I link to a few respected "battery calibration" tutorials that revolve around deleting the batterystats.bin? Heck, there's even an option for it in CWM Recovery.
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Click to collapse
I have done and still doing a lot of reading in this regard. The battery stats can only be held responsible for calibration if it holds amperage and voltage values set for the phone stock battery. That myth is currently considered debunked as this file is considered only to be linked for UI purposes. It all comes down to how actually does the phone measure the battery level. If there were in-built values for voltages and current, the concept of plug and play extended batteries would be doomed and they would have been accompanied by a detailed calibration process. Then there is also the discussion of Max 17042 (I am a SGS2 user), the fuel gauge chip and how it works. Frankly, I think we first need to understand how the phone measures the battery and against which parameters, are they preset or change on the go and what are the limits.
1aca said:
So what do you think happens when you remove the battery from your phone for a few minutes then put it back?
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I was trying this method just now and what happened was after i got the 100% signal, i unplugged the battery and after giving it a rest of few minutes, plugged it back in (a new 2000 mAH extended battery by Samsung). When i l plugged in the charger again, it start charging back showing that there was either power leakage or that is what calibration is all about. Did that two three times and when finally switched the phone on, it was 100%.
samurai jacko said:
I was trying this method just now and what happened was after i got the 100% signal, i unplugged the battery and after giving it a rest of few minutes, plugged it back in (a new 2000 mAH extended battery by Samsung). When i l plugged in the charger again, it start charging back showing that there was either power leakage or that is what calibration is all about.
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You are doing what is needed to reach real 100%, a second charge cycle, see article.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries/
As stated there it will reduce battery life but increase runtime after charge...
There's nothing good without evil ;-)
murrun said:
it was revealed by "Dianne Hackborn" from google android team a while ago. i'm posting it here because some of p970 users still doing this calibration thing.
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if you got clockworkmod recovery charge your phone to 100% (8-12 hours charge should do) then go to your recovery then select advanced then there should be option for wiping battery. Hopefully it'll work!!!
Here's my problem:
My battery level suddently drop from 50% or 30% to 0% in few seconds.
When i'm in system on (for example) 90% battery, if i go in recovery my battery level is 5%.
I tried a battery calibration program with no results.
My last chanche is to try another kernel but, i can't find one!
I'm searching for a stock kernel with root and recovery for 5.0.1.
Now i'm on rockz1 kernel.
Someone know where to find a stock kernel that i can try without losing root?
Or maybe there is already a solution to this strange battery problem?
Sorry for this noob request.
sar3vok said:
Here's my problem:
My battery level suddently drop from 50% or 30% to 0% in few seconds.
When i'm in system on (for example) 90% battery, if i go in recovery my battery level is 5%.
I tried a battery calibration program with no results.
My last chanche is to try another kernel but, i can't find one!
I'm searching for a stock kernel with root and recovery for 5.0.1.
Now i'm on rockz1 kernel.
Someone know where to find a stock kernel that i can try without losing root?
Or maybe there is already a solution to this strange battery problem?
Sorry for this noob request.
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There is nothing strange about this problem. You have classic symptoms of a dying battery. No kernel, rom, battery calibration or any other solution will help. Replace the battery and your problem will go away...
The reason your battery goes down suddenly is that it can't hold power due to deterioration of cells. In other words, only 5-10% can hold. Think of it as an air baloon: your baloon can hold 10% of air it used to hold and it will still rightfully show 100%, but once you start using it, the air goes fast and once it is close to empty, the system shuts down the phone. I bet it does not also take long to charge for the same reason.
If you don't believe me, do a test: start a youtube video when your battery is at 50%: I bet your phone wouldn't last more than 15 minutes.
optimumpro said:
There is nothing strange about this problem. You have classic symptoms of a dying battery. No kernel, rom, battery calibration or any other solution will help. Replace the battery and your problem will go away...
The reason your battery goes down suddenly is that it can't hold power due to deterioration of cells. In other words, only 5-10% can hold. Think of it as an air baloon: your baloon can hold 10% of air it used to hold and it will still rightfully show 100%, but once you start using it, the air goes fast and once it is close to empty, the system shuts down the phone. I bet it does not also take long to charge for the same reason.
If you don't believe me, do a test: start a youtube video when your battery is at 50%: I bet your phone wouldn't last more than 15 minutes.
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i believe you.
it is time to try to change battery but if something goes wrong...
...i'm coming Z5!!!