Database Develop

[Q] Battery charging maxxed out at 98% ??

My 4-week old rooted NC (1.1 / Autonooter 3.0) has been plugged into the BN charger for a few hours. The battery level shows 98% yet the LED on the BN charger is green, strongly suffesting that that's as far as it's going to go.
I've not let my NC get much below 40% battery level without recharging.
Anyone else seeing this behaviour? I realize that rechargable batteries have a finite life span, but I'd sort of like my NC to last me a couple of years.
Perhaps I should let the battery get below 10% before recharging...

There is no such thing as memory effect. Discharging your battery is the worst thing you can do for it. If it says 98% is the most it can do, then your battery statistics need to be wiped. You can get a more accurate mapping of % to charge level by doing a full charge to discharge cycle, but this leads to premature battery death, and I do not recommend it.
See also http://batteryuniversity.com/

Thats normal, the charger operates in low-current mode and will keep charging till it gets 100%. Let it plugged for another 1 hour and you should see the 100% full charge then.

arda99 said:
Thats normal, the charger operates in low-current mode and will keep charging till it gets 100%. Let it plugged for another 1 hour and you should see the 100% full charge then.
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You dear sir are correct, most devices have being doing that for awhile.
Even my pro2 and diamond would take 2 hours to get from 98% to100%.
Sent from my GT-I9000 using XDA Premium App

[Q] USB charging bug in 2.3.3

Hi
Apologies if this has been posted before. I recently flashed my phone with gingerbread (JVK) and since then, the USB charging have been more then a little bit screwy.
Usually i have my phone plugged into my PC while i am work. At some point during the day i will get the message telling me that its finished charging. If i unplug it at this point the battery will instantly drop to between 70 and 80 percent, sometimes it goes as low as 50%!!!! If i plug the phone back in it will continue charging for a while and then i will get another message telling me that the battery is at 100%. If i unplug it then it still drops, but to a higher percentage. I am able to get the battery to 99% by plugging it in and unplugging it a number of times.
The odd thing is that if i charge it from mains, it goes to 100% and stays there the first time.
Any ideas?

somehow same issue for me for what ever gingerbread (jv1/jvk/jvb) i have use.
but mine is different, if i got it unplug immediately after it saids "full charged" it will shows 100%.
BUT if i leave the charger on after it saids "full charged" for another few more hrs say 6 hrs, after unplugging.. it will immediately drop to 90% or even less some time.
well for js5/7/8 don't have such issue, that means after i leave the charger plug for overnight even its already full charged, after unplugging it still shows 99-100% !
wondering if any jv1/k/b user encounting this same issue?

pennzoilgtr said:
somehow same issue for me for what ever gingerbread (jv1/jvk/jvb) i have use.
but mine is different, if i got it unplug immediately after it saids "full charged" it will shows 100%.
BUT if i leave the charger on after it saids "full charged" for another few more hrs say 6 hrs, after unplugging.. it will immediately drop to 90% or even less some time.
well for js5/7/8 don't have such issue, that means after i leave the charger plug for overnight even its already full charged, after unplugging it still shows 99-100% !
wondering if any jv1/k/b user encounting this same issue?
Click to expand...
Click to collapse
If you are rooted, then delete battery stats, shutdown your phone, and leave it on the charger till it is 100% full. Then leave in on the charger again, start your phone, and delete battery stats again. Reboot your phone, and you should be ok.
For the second part, in which your phone after fully charged and left on charger lost some percentage after unplugging, it seems that Gingerbread stops charging once battery is full, and do not continue, even if charger is plugged in, once it'll lost some power. Some older phones does this (S45 for example).
Out of curiosity, what kernel are you using?

Virnik0 said:
If you are rooted, then delete battery stats, shutdown your phone, and leave it on the charger till it is 100% full. Then leave in on the charger again, start your phone, and delete battery stats again. Reboot your phone, and you should be ok.
For the second part, in which your phone after fully charged and left on charger lost some percentage after unplugging, it seems that Gingerbread stops charging once battery is full, and do not continue, even if charger is plugged in, once it'll lost some power. Some older phones does this (S45 for example).
Out of curiosity, what kernel are you using?
Click to expand...
Click to collapse
ok, as for battery stats i did the wipe, but i did not shutdown and do a full charge
as for kernel i did not really try on stock kernel though, i started using jv's series with CF's kernel or supercurio's hacked kernel.
maybe you are right that gingerbread stop charging after the battery is fully charged, but to my understanding i thought that is supposed it run on a/c once its fully charged? leaving the battery disconnect until you unplug it and it will starts to use the battery.
for froyo wise i presume it runs on a/c while leaving the battery disconnected, after overnight of full charged the phone is cool and don't feel like the battery is still "charging" after it reaches 100%

I had this problem too when i was with xxjvk. batterystats.bin was always automatically deleted by system once charger was connect/disconnect (couldnt remember...).
if the charger was unplugged right after fully charged notification, the phone worked perfectly fine and battery life was much better than with xsjw8..
Sent from my GT-I9000

rinl said:
I had this problem too when i was with xxjvk. batterystats.bin was always automatically deleted by system once charger was connect/disconnect (couldnt remember...).
if the charger was unplugged right after fully charged notification, the phone worked perfectly fine and battery life was much better than with xsjw8..
Sent from my GT-I9000
Click to expand...
Click to collapse
And do you suffer battery drops after unplugging from already full charged for few hours?
Sent from my GT-I9000 using XDA App

pennzoilgtr said:
And do you suffer battery drops after unplugging from already full charged for few hours?
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
yes, indeed.
Actually, i have mentioned in this thread before...
http://forum.xda-developers.com/showpost.php?p=12950876&postcount=6

rinl said:
yes, indeed.
Actually, i have mentioned in this thread before...
http://forum.xda-developers.com/showpost.php?p=12950876&postcount=6
Click to expand...
Click to collapse
Ok seems like jvb doesn't solve the issue... I'm on goatrips's jvb at the moment. I got the make sure that I unplug immediately after it said full charged otherwise the percentage would drop like 10-20% if I leave it connected overnight.
Wondering how come there is so many jvk/jvb tester/users around but seems no one mention about it.
Sent from my GT-I9000 using XDA App

Virnik0 said:
If you are rooted, then delete battery stats, shutdown your phone, and leave it on the charger till it is 100% full. Then leave in on the charger again, start your phone, and delete battery stats again. Reboot your phone, and you should be ok.
For the second part, in which your phone after fully charged and left on charger lost some percentage after unplugging, it seems that Gingerbread stops charging once battery is full, and do not continue, even if charger is plugged in, once it'll lost some power. Some older phones does this (S45 for example).
Out of curiosity, what kernel are you using?
Click to expand...
Click to collapse
Thanks for your reply but i have already tried this.
It also does not explain why it is fine charging from mains but not USB.

Notice that. Not sure whether its a bug. When it finishes charging, the sgs operate naturally and doesn't preserve the battery like it use to in the previous fw. So it drops immediately as the phone is disconnected. If the screen is left on during charging, it is a problem...
Sent from my GT-I9000 using XDA Premium App

Anything ever come out of this? I'm using Serendipity VII for Cappy based of jvb. I'm seeing this regardless of the type charger I use. Once it hits 100%, the battery continues to show 100% until I remove the charger. Then it shows what I assume is the amount of battery left after powering the phone from the point it reached a full charge to the present. If I remove it immediately after full charge is reached, it reflects that. If I leave it on the charger for hours, it immediately drops reflecting the time spent since full charge.
Sent from my SGH-I897 using XDA

[Q] battery going from 100% to 78% after unplugged???

I have a problem someone might be able to shed some light on.
I am on call so i need to leave my phone on over night, i plug it in as i go to bed so over noight it charges. In the morning it is at 100% until i unplug it, it will go down to 78 - 85% of battery
Does anyone know why this happens??????
Thanks.

Did you calibrate your battery after flashing Criskelo's ROM? Also, the phone stops charging after it reaches 100%, so its if you think that keeping it connected to the charger all night long it will be charging all the time you're wrong. The phone stops charging to prevent the battery from overheating - charging resumes after some time though

kova4a said:
Did you calibrate your battery after flashing Criskelo's ROM? Also, the phone stops charging after it reaches 100%, so its if you think that keeping it connected to the charger all night long it will be charging all the time you're wrong. The phone stops charging to prevent the battery from overheating - charging resumes after some time though
Click to expand...
Click to collapse
I have nearest Problem, but how could I Calibrate my battery?

kova4a said:
Did you calibrate your battery after flashing Criskelo's ROM? Also, the phone stops charging after it reaches 100%, so its if you think that keeping it connected to the charger all night long it will be charging all the time you're wrong. The phone stops charging to prevent the battery from overheating - charging resumes after some time though
Click to expand...
Click to collapse
I believe I did a battery Calibration, I used "Battery Calibration" to do this but this might not be the best thing to do a CAL.
I leave it plugged in cos i'm asleep when it gets to 100% otherwise i would unplug it, when i here it get to 100% i unplug it cos i only lose about 2% battery over night.
It should at least hold the charge at around 99 -98%.

I think Battery Calibration does the job - or you can go in recovery and wipe the battery stats there. Anyway next time that happens you should go to Settings>applications>battery use and you should check which of the processes is draining your battery the most

kova4a said:
I think Battery Calibration does the job - or you can go in recovery and wipe the battery stats there. Anyway next time that happens you should go to Settings>applications>battery use and you should check which of the processes is draining your battery the most
Click to expand...
Click to collapse
Nothing is draining the battery, I just want to know why after being on the charger "reading 100%" battery it drops to approx 78% after i unplug the Charger.
Even if i have everything turned on and running it should stay at 97% or above once i unplug the charger.

LOL that's just the battery acting if you don't have anything draining it. Also, just for information - you apparently haven't had everything turned on and running on the phone - I can tell you that the charger is not fast enough and cannot counter the entire drain of the battery, so you end up losing battery even though you're charging the phone and the worse part is that soon the battery overheats and stops charging. LOL

For crying out loud, use your brains and do a search for battery problems, there are so many damn bits of info on battery calibration it's unreal, first rule of forum.. "search before you ask"! Nappy change anyone?!
Sent from gt i9000 insanity 8.5/fugumod

slaphead20 said:
For crying out loud, use your brains and do a search for battery problems, there are so many damn bits of info on battery calibration it's unreal, first rule of forum.. "search before you ask"! Nappy change anyone?!
Sent from gt i9000 insanity 8.5/fugumod
Click to expand...
Click to collapse
I did a search but found nothing regarding this issue.

Sorry to bring up an old thread, but i have just recently gotten the same problem.
It started after i installed the 2000 Mah samsung battery. I have since calibrated the battery but the problem apperently still persist.
I have several chargers, and i'm beginning to suspect that the one in the bedroom doesn't work properly anymore. I used the charger in the living room to charge to 100% calibrate and it stayed at 100% when unplugged.
Any ideas or suggestions or is it simply still af matter of a bad calibration?

When unplugging, anything in the range of 95% to 100% should be ok.
As for calibrating, i usually drain my whole battery to 0, then recharge to get back 100%

That is exactly what I did as well.

Another way you could fix this is by turning off auto-sync while you charge.
I had this exact problem, but it is caused by your phone completely charging, when it gets to 100% it stops taking battery from the plug, so its using your phones battery. Auto sync is always been used and uses a lot of battery.
Try this and let me know

Battery does not charge over 50%

The battery of my Nook Color (CM7 - build 128) does not charge over 50%.
The battery completely drained out (I probably left it on standby for 1 week) and now when I recharge it the charge level always stops exactly at 50% (shown on Spare Parts). I also noticed that when the charge level reaches 50%, the color of the 'n' symbol on the USB cable becomes green (maybe it thinks that 50% is now the maximum charge level?)
Can someone help?
Thanks!

If you have cwm installed, go to advanced option and reset battery stats. Then reboot and charge your nook. Looks like the complete drain might have screwed up the reporting on charge. I would recommend charging the nook while it is turned off and see if that fixes the problem.
Sent from my NookColor using Tapatalk

luigig said:
The battery of my Nook Color (CM7 - build 128) does not charge over 50%.
The battery completely drained out (I probably left it on standby for 1 week) and now when I recharge it the charge level always stops exactly at 50% (shown on Spare Parts). I also noticed that when the charge level reaches 50%, the color of the 'n' symbol on the USB cable becomes green (maybe it thinks that 50% is now the maximum charge level?)
Can someone help?
Thanks!
Click to expand...
Click to collapse
Are you using the B&N Nook Cable and charger?

khaytsus said:
Are you using the B&N Nook Cable and charger?
Click to expand...
Click to collapse
Yes, I am.

Moshe5368 said:
If you have cwm installed, go to advanced option and reset battery stats. Then reboot and charge your nook. Looks like the complete drain might have screwed up the reporting on charge. I would recommend charging the nook while it is turned off and see if that fixes the problem.
Click to expand...
Click to collapse
I do not have cwm installed. Is there another way to reset the battery stats?
I tried to charge the nook when it is off, but it automatically powers itself on anytime I connect the USB cable. I do not remember it behaving like this before.

luigig said:
Yes, I am.
Click to expand...
Click to collapse
Good. So i see you're using build 128, you might try updating that. I don't recall when some of the battery calibration problems were fixed.
One thing to be clear on is even if your NC is saying it's 50%, if the charger stops, the battery is full. The charging is independent of Android, so it's not like it's overcharging etc. Most likely it's a calibration issue.
Get up to date on CM7 and use the NC until it powers off on its own then plug it in and don't touch it. It will turn on by itself. Leave it alone until it's done charging, see where it is then.

[Q] Help. Battery will not charge more than 70%

I am not new to the phone and I have done battery calibrations many times. I used MIUI for a long time, then went to Pinnacle 1.1. After a few weeks one night after fully charging, I unplugged the charger and it dropped to 70% instantly. I could then plug the charger back in and it will not move from 70% for a while, then it will register 'fully charged'. Removal of the charger again will make it drop to 70%. Turning off the device and charging will show the green battery about 2/3 full, but not registering full. I then went back to MIUI thinking it was a rom flaw, but this problem has persisted. I am right now charging on stock JF6 with the same results. If this is indicative of a defective battery, has anyone seen this before? The battery is 14 months old.
TL;DR - It seems that the battery wont charge past 70% regardless of ROM/Kernel.

I had a similar problem but it was because I wasn't using the charger that comes with the phone switched chargers problem was solved.
Sent from my I897 using xda premium

Have u tried draing ur battery, use tge battery till tge phone switches of on its own and then recharge it while the phone is off.
Sent From Infuse®

mrjay711 said:
I had a similar problem but it was because I wasn't using the charger that comes with the phone switched chargers problem was solved.
Sent from my I897 using xda premium
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Click to collapse
I am using the charger that came with the phone. Also tried a blackberry charger as well as usb charging it.

rkkaranrk said:
Have u tried draing ur battery, use tge battery till tge phone switches of on its own and then recharge it while the phone is off.
Sent From Infuse®
Click to expand...
Click to collapse
I drained the battery last night, and then charged while off fully. The green battery icon went to 100%, and as soon as I turned it on it said 73%.

You might want to check into getting a new battery I got a extended battery for 10$ you can probably find the original sized battery for about the same price if you look around.
Sent from my I897 using xda premium

Google "bump charging". I had a similar issue when I was on serendipity vii, it would charge to full, but as soon as I unplugged it would drop to 80%. I bump charged, then calibrated. All was well after that.
Sent from my SAMSUNG-SGH-I897 using XDA App

phrix626 said:
Google "bump charging". I had a similar issue when I was on serendipity vii, it would charge to full, but as soon as I unplugged it would drop to 80%. I bump charged, then calibrated. All was well after that.
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
Tried that. It hangs at about the 2/3 full level on the large green battery icon when the phone is charging off so I really can't do a proper bump charge.
I think I am going to resign to it being a battery past its prime...

New batteries are fairly cheap, plus I've heard that if you even mention faulty battery to at&t they ship you a new one for free...

studacris said:
New batteries are fairly cheap, plus I've heard that if you even mention faulty battery to at&t they ship you a new one for free...
Click to expand...
Click to collapse
I find that hard to believe, but it can't hurt to try!

Sounds like you need a battery calibration..
1. discharge completely
2. plug into a USB port on the computer for a slow charge up to 100% (overnight while "off")
3. unplug the device and turn it on
4. if you have a ROM with CWM installed, clear the battery stats at this time.
5. plug it into usb until it's charged to 100% (while on)
6. unplug the device and turn it off
7. plug in into usb again until its charged to 100%(while "off")
8. turn it on and use it as normal
This will allow the device to relearn it's battery charging characteristics. This is the battery calibration.

AdamOutler said:
Sounds like you need a battery calibration..
1. discharge completely
2. plug into a USB port on the computer for a slow charge up to 100% (overnight while "off")
3. unplug the device and turn it on
4. if you have a ROM with CWM installed, clear the battery stats at this time.
5. plug it into usb until it's charged to 100% (while on)
6. unplug the device and turn it off
7. plug in into usb again until its charged to 100%(while "off")
8. turn it on and use it as normal
This will allow the device to relearn it's battery charging characteristics. This is the battery calibration.
Click to expand...
Click to collapse
In stages 2 or 5 it never reaches 100%.
I am going to try a coworkers battery tomorrow at full charge. That should settle it.

orlandoxpolice said:
In stages 2 or 5 it never reaches 100%.
I am going to try a coworkers battery tomorrow at full charge. That should settle it.
Click to expand...
Click to collapse
You are not leaving it long enough. It will reach 100% once it charges what it believes is 30% more. It must be off and you must clear the Batt stats.

Once it stops charging it marks that as fully charged. Your battery needs calibration.

AdamOutler said:
You are not leaving it long enough. It will reach 100% once it charges what it believes is 30% more. It must be off and you must clear the Batt stats.
Click to expand...
Click to collapse
I left it off and plugged in overnight and it never reached 100%, but I will give it a shot again this weekend.

AdamOutler said:
Once it stops charging it marks that as fully charged. Your battery needs calibration.
Click to expand...
Click to collapse
You are right.
I did a small test with a coworkers battery today.
His battery in his phone - 88%
His battery in my phone - 58%
Leaves a delta of 30% which is exactly why mine stops charging at 70%.
It has gotten to 100% while off charging in the green. I then booted to CWM recovery and wiped battery stats, but it turns on at 70% again. It is almost like it isn't deleting the file.

orlandoxpolice said:
I find that hard to believe, but it can't hurt to try!
Click to expand...
Click to collapse
It's true, go to your nearest AT&T store and tell them about your issue and they'll take your information (name, address etc...) and ship you a brand new OEM (Samsung) battery no questions asked. No idea why they don't just hand you one on the spot, but it only takes a few days to get to you anyways.

orlandoxpolice said:
You are right.
I did a small test with a coworkers battery today.
His battery in his phone - 88%
His battery in my phone - 58%
Leaves a delta of 30% which is exactly why mine stops charging at 70%.
It has gotten to 100% while off charging in the green. I then booted to CWM recovery and wiped battery stats, but it turns on at 70% again. It is almost like it isn't deleting the file.
Click to expand...
Click to collapse
did you finish the procedure I mentioned? There is a calibration procedure. It involves turning it on and off several times and plugging it in an unplugging it several times.

AdamOutler said:
did you finish the procedure I mentioned? There is a calibration procedure. It involves turning it on and off several times and plugging it in an unplugging it several times.
Click to expand...
Click to collapse
I followed the calibration instructions perfectly. I have done it quite often actually. Didn't work. It acts as if CWM isn't actually deleting the file.

Deleted batterystats.bin via a terminal emulator and still no luck.
hopeless