Database Develop

[Q] battery percentage not accurate

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... ;-)

[Q]Battery indicator showing wrong?

The last couple of days I've got a weird problem. When my battery is fully charged everything seems okay and it drains in normal speed (compared to stock).
But when my phone runs out off battery and i start to charge in the beginning everything seems fine.
But suddenly it can go from 75 to 100% in 1 minute.When i look at the stats in MIUI ROM it seems like it's not at same height as it was the last day of 100%. Maybe only 80%.
Sorry for my bad English, but i hope it makes sense.
I've wiped battery stats in CWM. But is it possible that the phone actually is only 80% charged, even though the indicator shows 100% after wipe?
Because if the ROM think the battery is charged and wipe stats it will afterwards only charge to that point and the battery maximum will decrease over days?
If that's possible, how do i full charge the battery? Just leave it in the charger or?
I hope you can understand what I mean.
Thanks in advance

Hello
Does your phone charge to fx 75% and after that doesnt get higher until after you restart the phone?
Sent from my LG-P990 using XDA App

CescMusta said:
Hello
Does your phone charge to fx 75% and after that doesnt get higher until after you restart the phone?
Sent from my LG-P990 using XDA App
Click to expand...
Click to collapse
Yes excactly. But the numbers differs.
Today it charged to 100% though.
Got the same problem?
Sent from my Optimus 2X using XDA App

have you try calibrate your batt again
yes my friend have this problem too, maybe there is software bug

After flashing Celebration HD 2.0.1b I first used Battery Calibration from market to wipe battery stats. Afterwards the battery indicator problems started.
Yesterday i decided to wipe battery stats manually in CWM and drain to phone to 2% before charging, and afterwards I was able to fully charge the phone.
So maybe the bug in is Battery Calibration app?
I decided to install Juice Plotter to monitor the battery and compare it to one build in in MIUI. Just to get some more data.

Hello again
Yes i had the same problem as you, with my previosly 2 lg optimus 2x, and returned them because of the problem you mentioned. I am on the third op2x and luckily this work good
So if i were in your position i would try to go to the dealer and shift the phone with another lg optimus 2x.
Best regards
Sent from my LG-P990 using XDA App

CescMusta said:
So if i were in your position i would try to go to the dealer and shift the phone with another lg optimus 2x.
Click to expand...
Click to collapse
The user said that he started to have problem after a new rom and wiping battery stats, changing phone for that is not the smartest move at all. Is like changing phone because your rom doesn't work.
I have a similar problem, after you wipe battery stats you don't have a reliable indicator, for me the phone took 3 hours to get from 99 to 100%.
I also noticed that my miui ( 1.8.5 same for 1.7.29) doesn't update battery stats when the screen is off so all those plotter don't work, and i think this messes up with the battery indicator (I guess the phone doesn't have enough data to make a decent estimate)
I think is miui + wipe battery stats that can be problematic

I know that but i am just saying that i also had the same problem with the stock rom.
Best regards
Sent from my LG-P990 using XDA App

How old is the battery? How many cycles does it have?
I know from laptop Li-Ion batteries that the voltage vs. capacity is not linear.
When discharging, the voltage will steadily drop to a "wear-level" where it will jump to an almost depleted level. When charging, this "wear-level" will be at the top.
Why I am telling this? Because if this mapping is kept in SW and you wiped it, Android needs to relearn it again. So at 1st complete charging/discharging you would see a % sudden drop/raise, but at the next cycles it would be linear with time (although the total time will be smaller than a new battery).
When laptop/phone battery tips talk about calibration, it is so whoever monitors the voltage (circuit in battery or SW) to know were the wear drop will be, so your estimates to be better.
As an example, I had a very old Thinkpad that did not have any calibration, and it would discharge to about 40% and drop to 5% within seconds. But when charging, it would raise steadily to 70% (from that 5%) but 70% to 95% in seconds. After years of use, that percentage gap would just increase (40-5 got 60-5, 70-5 on discharging).
PS: my current Thinkpad has 4 years and the battery capacity is 49% with 150 cycles. But this one has a nice feature where if the battery was above a certain percentage, plugging AC would not charge it (and thus save a few cycles). I used it set at 70%.
PS: LiIon batteries have cycle count, heat and time as main enemies. Also don't like prolonged (think storage) low charge.

battery on wallcharger screen of error
CenaDK said:
The last couple of days I've got a weird problem. When my battery is fully charged everything seems okay and it drains in normal speed (compared to stock).
But when my phone runs out off battery and i start to charge in the beginning everything seems fine.
But suddenly it can go from 75 to 100% in 1 minute.When i look at the stats in MIUI ROM it seems like it's not at same height as it was the last day of 100%. Maybe only 80%.
Sorry for my bad English, but i hope it makes sense.
I've wiped battery stats in CWM. But is it possible that the phone actually is only 80% charged, even though the indicator shows 100% after wipe?
Because if the ROM think the battery is charged and wipe stats it will afterwards only charge to that point and the battery maximum will decrease over days?
If that's possible, how do i full charge the battery? Just leave it in the charger or?
I hope you can understand what I mean.
Thanks in advance
Click to expand...
Click to collapse
I have when i turn off my fhone and i charge it it shows a battery icon whit an error in it ics lgp990 please help i dont no what tho do

[Q] bad BATTERY life- Galaxy Mini s5570

guys.. please HELP mee.. i will be THANKful to each replier..
i have a samsung galaxy mini s5570 which i bought 6 months ago.. it had android 2.2.1 froyo preinstalled on it. during the first 3 months, i got pretty good battery life around 8-9 hours. i used only JUICE DEFENDER. and at dat tym, my phone wasnt rooted or anything. :O
then, the official update for s5570 was launched in India and i soon got my phone upgraded. also, i rooted it and tried various roms and all. but now, my battery LIFE has become really bad.. the battery gets empty within 3 hours of moderate use after i charge it to 100%.. :-(
even if you cant solve the problem, can anyone tell what exactly is the problem? IF I BUY A NEW BATTERY, will the PROBLEM be solved?? i now hav the STOCK ROM OF GB installed currently..

When you're not using your phone or when you don't need it, leave G3, wifi and GPS offline.
That should have a very good response to your battery life.
However, if the battery life keeps being that bad, the battery might have developed faults, in which case you can bring it in to the shop and they'll look into it.

it's true that gb uses more battery than froyo but after all that battery remains for about 7-8 hours in moderate use

I think you need to calibrate your battery.
Or, try this:
1. charge your phone when it's on, until the battery shows 100%.
2. turn off your phone and charge it again until the battery shows 100%.
3. unplug your chager for about 15 seconds and charge it again (phone still off) until the battery shows 100%.
4. turn on your phone.
this way, I got battery life better. And I found that sometimes it's the battery indicator which went wrong.

hopee ur idea works...
lonestrider said:
I think you need to calibrate your battery.
Or, try this:
1. charge your phone when it's on, until the battery shows 100%.
2. turn off your phone and charge it again until the battery shows 100%.
3. unplug your chager for about 15 seconds and charge it again (phone still off) until the battery shows 100%.
4. turn on your phone.
this way, I got battery life better. And I found that sometimes it's the battery indicator which went wrong.
Click to expand...
Click to collapse
i will tryy it juzz nw n see whethrr ur method works or not...

re
Think it ll help if u dont charcge ur phone untill battery is empty all the way

massaro33 said:
Think it ll help if u dont charcge ur phone untill battery is empty all the way
Click to expand...
Click to collapse
There was actually a pba faultt in my phone... got it replaced n nw d phone's working fine..
Sent from my GT-S5570 using XDA

What is a pba fault?

motorazrv3 said:
What is a pba fault?
Click to expand...
Click to collapse
pba means motherboard... (according to service centre people )
and there was pba fault so they replaced and gave me the motherboard

Battery discharge to sub 97 upon unplugging

hey everyone , my phone's battery drops to 95-98% within a few minutes after i unplug it from the charger when the green LED shows up. I've tried battery calibration apps and everything but it didn't help, i've also charged my phone by keeping it powered off and that still hasnt solved the issue, i've read on some forums that the battery in many phones doesnt charge to 100% completely for the health of the battery, is it true? is this issue normal? i've also tried charging my phone to 100% when powered on, then i turned it off and charge it till green LED, and then turned it on and it gave 100% battery life. Most of the time , restarting my phone puts the level back to 100 or 99 %, is there a fix for this or is this normal? I'm currently running Android Revolution HD ROM on 4.4.2 KitKat. Any help will be much appreciated, thanks

muhammad.uzi1994 said:
hey everyone , my phone's battery drops to 95-98% within a few minutes after i unplug it from the charger when the green LED shows up. I've tried battery calibration apps and everything but it didn't help, i've also charged my phone by keeping it powered off and that still hasnt solved the issue, i've read on some forums that the battery in many phones doesnt charge to 100% completely for the health of the battery, is it true? is this issue normal? i've also tried charging my phone to 100% when powered on, then i turned it off and charge it till green LED, and then turned it on and it gave 100% battery life. Most of the time , restarting my phone puts the level back to 100 or 99 %, is there a fix for this or is this normal? I'm currently running Android Revolution HD ROM on 4.4.2 KitKat. Any help will be much appreciated, thanks
Click to expand...
Click to collapse
check THIS out

kamilmirza said:
check THIS out
Click to expand...
Click to collapse
Thanks man, I'll give it a try and then post the results here

kamilmirza said:
check THIS out
Click to expand...
Click to collapse
It didnt work

bro its quite normal and good for the battery to have 97% battery after unplug
you should not worry about it
just use your phone normally
Sent from my One using Tapatalk

kamilmirza said:
bro its quite normal and good for the battery to have 97% battery after unplug
you should not worry about it
just use your phone normally
Sent from my One using Tapatalk
Click to expand...
Click to collapse
Thanks, I read somewhere that it's common with 4.3+ HTC One's so it's all good

[Q] Battery problem, drops to 0% randomly

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 .