i guess a picture is worth a 1000 words... have a look...
more pix for ur eyes ^_^
If your rooted, try battery calibration. Plenty of threads about, and varying methods.
If not, another battery, and if new, ensure charge fully, phone off, overnight, before first boot.
Sent from my GT-I9100 using xda premium
forgot to mention i'm running [Rom]Wanam v3.2 at that time, currently on v3.4, the dark extended areas is me at work where i turn airplane mode on due to serious bad reception at work... sync is on rest of the time for gmail/whatsapp/kakao other than that manual updates on twit and some news apps...
u can see the first jump in the first pic, that was due to me exchanging with 1st spare battery( got 4 + original batt= total of 5)
i dont know if its the phone and exchanging batteries thats causing such high battery losses at the end of the battery life...
plus yesterday and the day before battery goes crazy when it reaches 30-20% and when i go for a restart to freshen things up... the phone wont switch on thinking the battery is totally dead... i put in the new battery and its @ 100% ... switch back to the old battery to see where the 30-20% went... it wont start...
now im thinking... keeping 1 battery in the phone with a charge from 0-100% actually takes the phone all the way to 0% but exchanging the battery wont...
how am i supposed to use the full potential of the batteries...
UpInTheAir said:
If your rooted, try battery calibration. Plenty of threads about, and varying methods.
If not, another battery, and if new, ensure charge fully, phone off, overnight, before first boot.
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
been using this app since my old sgs, it sure works and have been using it ever since...
tho in the [Rom]Wanam ... install procedure says that its backing up the battery stats and this lead me to think that a batt calibration is not needed... or am i wrong to think so?
If you change batteries, all previous data will be irrelevant, and you need to calibrate each time. You can do things manually by installing battery monitor widget, charge to 100% AND until the mA reaches zero (Voltage spills be approx 4200mV). At this point, quickly delete battery stats (menu / stats /) and immediately unplug.
https://market.android.com/details?id=ccc71.bmw
Top help with monitoring, You can config the update rate and widget content so it shows mA, %, mV. Also have alarm when stops charging (if configured).
There is also an option for calibration, but I only use this method when done above first. Never discharge to zero, 1% min.
Sent from my GT-I9100 using xda premium
UpInTheAir said:
If you change batteries, all previous data will be irrelevant, and you need to calibrate each time. You can do things manually by installing battery monitor widget, charge to 100% AND until the mA reaches zero (Voltage spills be approx 4200mV). At this point, quickly delete battery stats (menu / stats /) and immediately unplug.
https://market.android.com/details?id=ccc71.bmw
Top help with monitoring, You can config the update rate and widget content so it shows mA, %, mV. Also have alarm when stops charging (if configured).
There is also an option for calibration, but I only use this method when done above first. Never discharge to zero, 1% min.
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
Thing is, what's the use of having spare batteries if this will happen on each battery swap and having to go thru calibration means having a charger nearby...
and by 0% i didnt actually mean 0 but till that 1% turned the phone off
if what u said is true, then i guess i need some kind of script to help and keep the batt data even after swapping.. based on 1 good calibrated file swapping batteries should start from a certain point even if the batteries do lose some of their charge but continue to moniter things as they were... i dunno if what i said makes sense... correct me if i'm wrong
Not really 100% sure, but sure I have not always calibrated after a battery swap in the dhd..The previous battery was calibrated and performing well, and the replacement would have been very close to 100% charge. I didn't notice any irregularities in the battery data, or battery drain.
So I suppose a good bat stats file should help the phone showing relatively "accurate" data after a battery swap, if they're both "conditioned" (gone through a number of charging cycles, not straight out of thre box)
Maybe I could be wrong, but based on past experience.
Sent from my GT-I9100 using xda premium
UpInTheAir said:
Not really 100% sure, but sure I have not always calibrated after a battery swap in the dhd..The previous battery was calibrated and performing well, and the replacement would have been very close to 100% charge. I didn't notice any irregularities in the battery data, or battery drain.
So I suppose a good bat stats file should help the phone showing relatively "accurate" data after a battery swap, if they're both "conditioned" (gone through a number of charging cycles, not straight out of thre box)
Maybe I could be wrong, but based on past experience.
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
thanks a lot for ur replies ^_^ much appreciated
anybody else wanna shed some light on this ?
This is a good app for more info on battery drainage.
http://forum.xda-developers.com/showthread.php?t=1179809
Have you tried different radios/modems for better reception? if your phone is struggling to get decent reception its going to use your battery.
You could try changing to 2G only in wireless settings. used to help me alot.
mynamesteve said:
This is a good app for more info on battery drainage.
http://forum.xda-developers.com/showthread.php?t=1179809
Have you tried different radios/modems for better reception? if your phone is struggling to get decent reception its going to use your battery.
You could try changing to 2G only in wireless settings. used to help me alot.
Click to expand...
Click to collapse
i'm already using it steve, thanx for the helpful info ^_^ , tho it has nothing to do with my strange problem... before going to work i switch to 2g coz i mainly use it for calls so after work is done, i wanna have fun with the phone so its back to 3g... i hardly have reception as i mentioned before is due to really thick walls and working underground in some rooms... its just common sense... plus im on latest modem and its actually performing better than other phones (nokia,BB,moto,iphones....) at where i work, 5 guys got convinced and got a sgs2 coz of mine lol
Related
My phone drains the battery very quickly from 100% to 1% but after reaching 1% it can be used for hours.Last time after the full charge battery dropped from 100-1% in about 2 1/2 hours of use on WiFi but after that it lasted for more than 13 hours on 1% but the Network data, Bluetooth and WiFi was off.
Currently i am running CM7 stable (battery fix is also applied) i was also facing such issues on the stock 2.3.4.
maybe a battery re-calibration can solve this issue?
sspa said:
maybe a battery re-calibration can solve this issue?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1198333
I have done that also followed the steps for charging given in this thread
Sent from my MB860 using XDA App
ibrahimsengul said:
I bought my Atrix 3 weeks ago. My previous device was also another Motorola, Milestone.
When I first started to use Atrix I found that the battery was draining so quickly even I didn’t install any apps yet. It was becoming 1% in 70 minutes with full display and running default apps.
I tried to full battery several times, did factory resets and finally went back to shop. The shop replaced the battery with another new one.
Still it happened same problem. Then they changed my device with another new one. It was same, too.
I would give it back to shop but last time I decided to discharge it until it turns off.
At this point I found that discharging takes long time after it became 1%. For example by heavy using it becomes 1% in 70 minutes, then it takes at least 200 minutes more even I watch videos via Youtube, play games etc.. It means in total it takes at least 4,5 hours with full display and heavy usage. That’s OK for me as battery life.
But I want my battery meter show correct percentage. Then I can be able to know when it will turn off.
I tried battery calibration several times. I search a lot about this problem but found nothing. Probably people thinks that their battery life is too short.
So cannot find solution.
Summary: My Atrix’s battery meter immediately drop to 1% and then runs 3 times longer than previous 99%. PLEASE HELP ME TO CORRECT MY BATTERY METER DISPLAY.
Do you think that your battery fix way helps me?
Please see details of my Atrix below:
MB860
2.3.4
45.0.7.MB860.Orange.en.FR
N_01.77.30P
[email protected]#2
4.5.2A-11_OLE-7 OceanR1.1
Battery calibration result in %100: 4196mV
Current charge: 40%, 3944mV
Usage: 12h 48m 1s on battery (wifi and 3g data off)
(Phone idle 72%, mobile standby 13%, display 7%)
Click to expand...
Click to collapse
Another atrix owner is also facing the same issue.
Sent from my MB860 using XDA App
maybe you can just shot that owner a PM, ask how he solved his problem.
sspa said:
maybe you can just shot that owner a PM, ask how he solved his problem.
Click to expand...
Click to collapse
He has not figured out the problem he is also looking for a solution.
I have now reflashed stock sbf 2.3.4 still having the same problem.
My device settings
Network data and Bluetooth is always off.
WiFi is only on when being used rest of the time its also off.
terminator1983 said:
I have now reflashed stock sbf 2.3.4 still having the same problem.
My device settings
Network data and Bluetooth is always off.
WiFi is only on when being used rest of the time its also off.
Click to expand...
Click to collapse
Like somebody already told you a few post back, follow these steps and it will fix your problem...
http://forum.xda-developers.com/showthread.php?t=1198333
Hint: Follow the steps!
sotodefonk said:
Like somebody already told you a few post back, follow these steps and it will fix your problem...
http://forum.xda-developers.com/showthread.php?t=1198333
Hint: Follow the steps!
Click to expand...
Click to collapse
I have already followed these steps twice but i doesn't seem to work for me.
terminator1983 said:
I have already followed these steps twice but i doesn't seem to work for me.
Click to expand...
Click to collapse
Did you flash the jug6ernaut's CWM battery fix in recovery?
Do your battery its an original battery or its a chinese one?
sotodefonk said:
Did you flash the jug6ernaut's CWM battery fix in recovery?
Do your battery its an original battery or its a chinese one?
Click to expand...
Click to collapse
Yes i have also applied the fix no battery is original it came with the phone and the phone is only two weeks used.
Have you solved this problem? I meet the same issue.
byelims said:
Have you solved this problem? I meet the same issue.
Click to expand...
Click to collapse
No nothing how u got this problem.
Sent from my MB860 using Tapatalk
terminator1983 said:
No nothing how u got this problem.
Sent from my MB860 using Tapatalk
Click to expand...
Click to collapse
I don't know. I bought it, and unlocked it directly, then flash CM7 Rom, but noticed that the battery drain very fast. However, after the indicator becomes 1%, I can still use rather a long time. I thought it was an error on battery meter, but I can't make it display correctly through calibration.
Now if the battery is fully charged, I can still use rather a long time after the indicator becomes 1%. But after the battery drained, it can't be charged completely. It really disappoints me very much.
byelims said:
I don't know. I bought it, and unlocked it directly, then flash CM7 Rom, but noticed that the battery drain very fast. However, after the indicator becomes 1%, I can still use rather a long time. I thought it was an error on battery meter, but I can't make it display correctly through calibration.
Click to expand...
Click to collapse
Ya that's the same problem i have i think its something to do with phone recognizing the mah capacity of the battery if u can see the charge-full-design in sys/class/power-supply/battery/charge-full-design u will notice it showing only 500 which should be 1880 that's why our phone drops and charge quickly according the capacity its getting from charge-full-design.
This value can be changed on other phone but for Motorola i have not found any tutorial or app to do so
http://forums.webosnation.com/palm-pre-pre-plus/256967-find-out-how-good-bad-your-battery.html
http://forum.xda-developers.com/showthread.php?t=765609
byelims said:
Now if the battery is fully charged, I can still use rather a long time after the indicator becomes 1%. But after the battery drained, it can't be charged completely. It really disappoints me very much.
Click to expand...
Click to collapse
And for charging don't take off the phone from charging on 100% bcoz when the phone battery meter is showing 100% its battery mv is less than 3900mv and if u keep it on charge after 100% battery mv value will gradually go up to 4200mv which is the actual capacity of the battery.
terminator1983 said:
Ya that's the same problem i have i think its something to do with phone recognizing the mah capacity of the battery if u can see the charge-full-design in sys/class/power-supply/battery/charge-full-design u will notice it showing only 500 which should be 1880 that's why our phone drops and charge quickly according the capacity its getting from charge-full-design.
This value can be changed on other phone but for Motorola i have not found any tutorial or app to do so
http://forums.webosnation.com/palm-pre-pre-plus/256967-find-out-how-good-bad-your-battery.html
http://forum.xda-developers.com/showthread.php?t=765609
And for charging don't take off the phone from charging on 100% bcoz when the phone battery meter is showing 100% its battery mv is less than 3900mv and if u keep it on charge after 100% battery mv value will gradually go up to 4200mv which is the actual capacity of the battery.
Click to expand...
Click to collapse
Oh, thanks. The value in sys/class/power-supply/battery/charge-full-design is just a result, representing the battery statue. So the key is that the battery capacity can't be recognized correctly by the phone. I just test another battery, and the value 1880!
But the former battery doesn't look like a fake one. Actually, I bought them together. I can't understand.
hi
is it required to battery caliberate after flashing new rom?
and when ever i reboot my system either battery jumps from 10% to 30 or more
or becomes less than 10%..
if i should then which app should i use?
any guidnace
plz
TY
No such thing. After you flash a new rom, charge the phone to 100%, turn it off, remove the battery for 30 seconds, replace the battery, turn phone on, enjoy.
Anyone selling you the whole calibration thing is selling you voodoo.
hi
thanks for your reply
plz suggest me best battery app with battery saving feature , suggestion on what we can do with remaining battery , expected full time charge , complete graph or battery usage history by apps?
paid or free , tell me best one
thank you
There's lots of battery apps on Google Play, there's no such thing as the best one, go have a look under the Tools section in Apps (you'll also find some under productivity). Stay away from apps like Juice Defender that claim to save you battery by doing things automatically which you can do yourself in two seconds, these have been proven time & again on XDA to use more juice than they save.
ivl try battery monitor
thank you
No probs ;-)
MistahBungle said:
No such thing. After you flash a new rom, charge the phone to 100%, turn it off, remove the battery for 30 seconds, replace the battery, turn phone on, enjoy.
Anyone selling you the whole calibration thing is selling you voodoo.
Click to expand...
Click to collapse
Wouldn't that procedure above be considered calibrating the battery? LOL. J/K. Couldn't resist .
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
@up
actually it cannot. this way you only help the system in your phone recognize full capacity of battery (which is not even full because not one battery works at it's full capacity - but it's fullest you will get at this point of your battery life). when it's about calibrating - listen to MistahBungle - it's all voodoo. you cannot calibrate li-ion battery unless you kill it and then revive. by killing it I don't mean depleting it in your phone, because even when phone shows the battery is fully depleted it's really not - there is still some juice in it. you'd have to use e.g. special charger which can drawn juice out of battery and make it really empty. only then your battery is dead and useless. you may revive it by applying cca. 5V but actually it not always works. so you cannot calibrate your battery in home environment.
what you can do is "re-calibrating" so called fuel gauge (description under links given below) and you may also help your system recognize the real state of your battery charge. sometimes it happens that systems readings are wrong and battery is on 85% but system is reading it as 50 or 100%. to help it read battery chip correctly you do the thing MistahBungle so helpfully described. sometimes you even don't have to do it but wait 2-3 charging cycles and system will adjust it's reading itself. by charging cycles I mean charging like from 20-100%. why not from 0%? because even if it's not a real depletion state, li-ion batteries doesn't like the state of being discharged too much.
more on this and lot of other helpfull information you will find here:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://www.androidpolice.com/2010/1...bump-charging-and-inconsistent-battery-drain/
gaeilge said:
@up
actually it cannot. this way you only help the system in your phone recognize full capacity of battery (which is not even full because not one battery works at it's full capacity - but it's fullest you will get at this point of your battery life). when it's about calibrating - listen to MistahBungle - it's all voodoo. you cannot calibrate li-ion battery unless you kill it and then revive. by killing it I don't mean depleting it in your phone, because even when phone shows the battery is fully depleted it's really not - there is still some juice in it. you'd have to use e.g. special charger which can drawn juice out of battery and make it really empty. only then your battery is dead and useless. you may revive it by applying cca. 5V but actually it not always works. so you cannot calibrate your battery in home environment.
what you can do is "re-calibrating" so called fuel gauge (description under links given below) and you may also help your system recognize the real state of your battery charge. sometimes it happens that systems readings are wrong and battery is on 85% but system is reading it as 50 or 100%. to help it read battery chip correctly you do the thing MistahBungle so helpfully described. sometimes you even don't have to do it but wait 2-3 charging cycles and system will adjust it's reading itself. by charging cycles I mean charging like from 20-100%. why not from 0%? because even if it's not a real depletion state, li-ion batteries doesn't like the state of being discharged too much.
more on this and lot of other helpfull information you will find here:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://www.androidpolice.com/2010/1...bump-charging-and-inconsistent-battery-drain/
Click to expand...
Click to collapse
read that ..
thank you
and is there any way to stop auto startups of apps?i have around 200apps and most of them i use around once a day or not even once
i use android assistant to manage startup but it does on boot and after some time if i check running apps most of apps will be there running
is there any app to block it running automatically? not just at startup ? full control like anything?
thank you
actually I cannot help with that. I don't use such a software and really don't believe in it. but, the fact is that I do not use so many apps. other fact is that surely there is some useful software that could help you with that task, i just do not use one and personally I'm not interested in it. I know that perhaps the best method is to freeze them with titanium but if you use these apps from time to time then it would become complicated and not worth the effort.
still I have few questions:
why would you like to stop them from working? do they drain your battery? if so then check your logs with bbs and find out which ones are draining, try to change their setting or get rid of them, or at least close only these ones. long time ago I was fighting with some apps that I do not use often and they start themselves from time to time. I didn't want to get rid of them, so before every night I was killing them one-by-one from applications menu (actually most of them didn't wake up until I ran them myself). finally, after many tests I got to the point that it doesn't make any difference. apps I was killing, even if running, didn't use any recourses, didn't produce wakelocks, they were just using some RAM. and if it is the reason of your concern then do not be worried - they may use as much RAM as they want - android will free RAM when it will need it.
now I do not kill any apps and by night I lose 0-2% of battery which is my only concern - what should we care more? CPU, RAM - let it work as long as it doesn't stop us from enjoying our phone and make a usage of it uncomfortable.
and if you're worried about packet data then you may limit it for each app using system menu in ICS.
ancilary said:
read that ..
thank you
and is there any way to stop auto startups of apps?i have around 200apps and most of them i use around once a day or not even once
i use android assistant to manage startup but it does on boot and after some time if i check running apps most of apps will be there running
is there any app to block it running automatically? not just at startup ? full control like anything?
thank you
Click to expand...
Click to collapse
Thanks dude. I also have the similar problem. I have spent months on it without any improvement. Now I'm quite frustrated and not optimistic on the solution you have provided towards my issue, but your decription gives me a lot of clue.
But my problem is even more tricky, I would like to share it here so see if anyone have met it before, or if I need to start a new thread to deal with it:
The problem can be generally decribed as below:
1. When the battery is fully charged, unplug and consume the juice until the level reach around 30%, then the phone is shut down automatically; after I plugin the power and restart the phone, the battery level is displayed as 0%;
2. After charging for a while from 0% , restart the phone and you will see the battery level directly goes back to 50%, but still with very low voltage;
3. Changing with a new battery won't solve the issue -- though the new battery itself may also have problem(not sure if it is genuine), but I don't think a fake battery and an old battery should behave almost the same, so I don't think it is the battery's problem; criticize if I'm wrong
4. Re-flashing a new rom won't solve the issue either. I have tried different CM9 nightlies and now I'm using CM10 nightlies, none of them is immune to the problem;
5. Clear the battery state won't solve the problem. It is hard to say whether it improves the situation at least a tiny bit. I mean it may work somehow, e.g. My phone used to be shut down at 50% battery level and now it can last to 36%. But it never totally solve the problem once and for all, so I still don't trust this caliberation thing may work.
I hope I have clearly stated my issue. I'm so at the end of my patience, this little bastard have been always torturing me You guys are the last I can count on I really hope I came here earlier so as not to have wasted so much time.
I was really suffering from massive battery drain....see here - http://forum.xda-developers.com/showthread.php?t=1933012
ive now found out that i am having a very wierd problem...My rom is showing some 30% battery while 4ext shows 50%......Sometimes it is exactly the opposite....Once i discharged my phone to 2% (rom reading) and when i saw in recovery it says 17%....
I have completed many many cycles of battery from charging to full....and discharge to 0.....Also i used the battery callibration app SEVERAL times!!!!........But nothing seems to work...
Can somebody help...Please
I am really suffering from massive battery drain http://forum.xda-developers.com/showthread.php?t=1933012 :crying:
Did you try to delete battery stats? Or use an app to improve battery life?
I have the same issue too when booting into recovery. I don't worry about it. I suggest the same as Ramjet in your other thread.
Sent from my PG86100 using Tapatalk 2
I had this issue with my old battery and old charger,
Now I dont use my phone while charging , I charge other batteries with the wall charger while using other ones and everything is fine now.... battery % seems to be same in both android and recovery.
I have that same issue too. Lol maybe the recovery can't read the battery correctly. It'll show up higher in recovery and then when I reboot, it will read the same way like in recovery. Tried numerous batteries with the same result. Although I havnt tried battery calibrating. Ill give that a shot.
Is there any solution ??
Try klect's solution and go into recovery, wipe battery stats. Then let your battery drain and die. Then charge your battery back to 100% with no interuptions like pulling your phone off the charger too soon. When you wipe your batt stats you are getting ready to recaliberate your battery. After you let it charge to 100 percent. Let it drain to 0 a couple times to recondition your battery.
You do know that the evo 3D gives around 3 hrs of screen time dont you? even on stock rom on normal usage. If you have the wifi on all the times you'll get around 2:30 maybe 3 on a full charge.
Your battery certainly is draining faster than usual but have you tried keeping it idle and seeing what kind of drain you get? From that screenshot in the other thread it seems like your phone is getting some heavy wifi browsing or something (and do check if facebook or email apps are the culprit. Having push email on drains a lot)
And the recovery/rom reading wrong stats happens all the time. just recalibrate your battery like these good folks here have already suggested
Yes i keep wifi on all the time...
But once i kept my locked for abot 3 hours after full charge...when i unlocked it showed 99%...i was happy and i didn't do anything just surfing my screens it dropped very very fast to some 70 % !!!!
Also please hit our thank you buttons please. Even if you didn't get the exact answers you wanted. It's appreciated for helping one another.
you really should check your apps battery usage using one of the apps ramjet73 told you about
ramjet73 said:
There are a bunch of tips here.
Usually that kind of drain is caused by an app. Try running a stock ROM for a day or two and see if the issues go away. Or use one of the battery monitoring apps (BetterBatteryStats, SystemPanel Standard, Battery Monitor Widget) to determine which app is causing your drain.
It may take some work on your part to isolate the problem since there is no global solution to battery problems.
ramjet73
Click to expand...
Click to collapse
top culprits are mostly facebook,email exchange,google maps and pretty much anything that syncs alot
Also try using you phone on min brightness auto brightness is also a battery killer
I cant beleive no one asked you this but which kernel are you using? And is it overclocked?
I am on mwakious 13.1 default...no changes to it
OK so to calibrate my new battery charge to full unplug then use till it dies then recharge to full and that's it? Is one cycle enough?
Thanks
Sent from my SCH-I605 using Tapatalk 2
there is no calibrating requirement for lithium ion batteries...
Not sure if it is good to let it die. I was told on the gnex that running it till it dies was not good for thag type of battery? Maybe someone with more knowledge can clarify that.
Travisdroidx2 said:
Not sure if it is good to let it die. I was told on the gnex that running it till it dies was not good for thag type of battery? Maybe someone with more knowledge can clarify that.
Click to expand...
Click to collapse
No adverse effect.
Sent from my SCH-I605 using Tapatalk 2
Actually you are not supposed to let them drain completely..
http://www.techrepublic.com/blog/five-apps/five-tips-for-extending-lithium-ion-battery-life/289
I know this is slightly a different question. My issue is after you flash a new rom it seems the % is not entirely accurate. It will act fine for a while and then when u get to like less then 10% it drops dramatically like it wasnt reading it correctly or just like today I turned the phone off and did a reboot at 96% and when it powered on it was at 92% which is quite a bit of time on the note 2.
How do you get your battery reading accurate again after you have flashed a new rom? This has happened with my Bionic in the past as well. Thanks.
Sent from my SCH-I605 using xda app-developers app
nunyazz said:
Actually you are not supposed to let them drain completely..
http://www.techrepublic.com/blog/five-apps/five-tips-for-extending-lithium-ion-battery-life/289
Click to expand...
Click to collapse
Correct, it is bad to deep discharge Lithium Ion batteries.
INCREMENTAL said:
I know this is slightly a different question. My issue is after you flash a new rom it seems the % is not entirely accurate. It will act fine for a while and then when u get to like less then 10% it drops dramatically like it wasnt reading it correctly or just like today I turned the phone off and did a reboot at 96% and when it powered on it was at 92% which is quite a bit of time on the note 2.
How do you get your battery reading accurate again after you have flashed a new rom? This has happened with my Bionic in the past as well. Thanks.
Click to expand...
Click to collapse
100-90% can vary depending on when you take it off of the charger. Basically, once the battery hits 100% on the charger, it will start slowly discharging itself to avoid damage. Once it get below a certain threshold, it will charge back up to capacity again.
Regarding rebooting, that process is fairly system intensive and it is natural to lose some battery life. In addition, prior to the reboot the OS is calculating a rough estimate of the percentage left partially based on previous use. So for example, if your phone was in deep sleep for hours, then you reboot where the CPU ramps up significantly, the percentage will alter to more accurately reflect the charge left in the battery.
In short, there is never a need to "calibrate" a battery, the OS will sort it out itself even after flashing different ROMs and it can take a couple days for kernels to settle.
Hello!
Lately I've been suffering from a battery problem, I will explain what happens.
I charge my phone completely and then I start using it... when it hits 30% left, the next drop is 20 instead of 29%. For example... If it takes 3 minutes to go down from 84% to 83%... that's the same time it takes from 30% to 20%.
It also happens when it hits 14%, instead of dropping to 13% it drops to 4%.
How can I fix this? I've been told that it's an issue of flashing too many ROM's
Actual ROM; Carbon 1.7 Stable version
Previous ROM: D-WIZ JBX.
P.S: I've been facing this issue for months now, I think it started with D-WIZ.
Thanks
I am also having these problems yesterday i flashed aokp rom it all went well but today it was showing 70% and as soon as i put the mobile data on it showed 49%
Sent from my XT910 using xda app-developers app
I've had the same problem and I cannot seem to find a solution. My battery also INCREASES from about 80% to 100 when I'm charging an almost dead battery
Why don't you guys calibrate your battery once . Let me know if it works or not . If not then ill look out for something else.
Please hit the thanks :thumbup: if i ever helped ya !!
How old is your phone.?
Its common for old batteries to incorrectly display battery data. This simply happens because the battd daemon uses the estimation based on checkpoints and voltage of the battery. When the battery gets old, the actual charge stored is less than the reported value and results in wrong calculation by battd.
If your device is pretty old, it is in a sense normal. However if its new then it might be some problem.
PS: The battery calibration is a myth! The /data/system/batterystats.bin file is not related to battery charge/life/status (exactly as Google devs stated earlier).
In case of our Razr, charge the battery to 100% and keep charging for few hours after that. Then disconnect it battd will display correct 99%. That's all you need when changing ROMs or batteries! Do not waste your time on "battery calibration"!
Sent from my XT912 using Tapatalk 2
agustincards14 said:
I've had the same problem and I cannot seem to find a solution. My battery also INCREASES from about 80% to 100 when I'm charging an almost dead battery
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I also get the 80% to 100% when charging
neo.ank said:
How old is your phone.?
Its common for old batteries to incorrectly display battery data. This simply happens because the battd daemon uses the estimation based on checkpoints and voltage of the battery. When the battery gets old, the actual charge stored is less than the reported value and results in wrong calculation by battd.
If your device is pretty old, it is in a sense normal. However if its new then it might be some problem.
PS: The battery calibration is a myth! The /data/system/batterystats.bin file is not related to battery charge/life/status (exactly as Google devs stated earlier).
In case of our Razr, charge the battery to 100% and keep charging for few hours after that. Then disconnect it battd will display correct 99%. That's all you need when changing ROMs or batteries! Do not waste your time on "battery calibration"!
Sent from my XT912 using Tapatalk 2
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Well my razr is almost 10 months old!
So there is no way to repair it? :\
Arachnida said:
I also get the 80% to 100% when charging
Well my razr is almost 10 months old!
So there is no way to repair it? :\
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What I usually when I switch ROMs is I will both download battery calibration, and keep the charge at 100% for a couple of hours after. That way there is no doubt that it truly is at 100%, and Battery Calibration can do the job well hope this helps!
Arachnida said:
I also get the 80% to 100% when charging
Well my razr is almost 10 months old!
So there is no way to repair it? :\
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I wouldn't consider it very old. I think in your case it can be fixed. There were some files that needed to be replaced. don't remember it exactly but will look into it.
Mine does this to. Not sure if there are dead battery cells or if its associated with rom.
Having this issue also calibrate don't help me unless I'm doing it wrong..... RAZR maxx
Sent from my XT912 using xda premium
neo.ank said:
I wouldn't consider it very old. I think in your case it can be fixed. There were some files that needed to be replaced. don't remember it exactly but will look into it.
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Thanks