When I charge my phone and it says the battery is full and 100%, but after I unplug the charger, I only get 98% of battery. It is not really a problem but i'm just wondering if anyone else has this also.
Sent from my LG-P970 using XDA App
Seems to be phone battery calibration, happens to me too. Try not to unplug the charger immediately after 100%, let it overcharge for few minutes more.
Sent from my LG-P970 using Tapatalk
Also happening to me... It's because battery calibration...
This is the normal behavior of overcharge protection.
imagine you battery is charged till 100%, the overcharge protection now disable charging till the battery is loosing a few % of its charge, but the "battery memory" doesnt recognize this respectively doesnt refresh its state so your battery indicator will always show 100% until you unplug the phone.
if you unplug the phone at 100% it might be, that the battery memory is refreshing after loosing one more % of charge and now recognize, thats it wasnt at 100% at all and show you the current charge.
e.g. if you charge your phone when its off-state, this behavior shouldnt take place and the phone should charge till exactly 100%. important for recalibrating the battery.
Here, if you have root use this
https://market.android.com/details?id=com.liteup.calibratebattery
You can also load up clockwork recovery anf clear battery stats.
If no root access, fo the following.
1.Power on let fully charge
2.turn phone off while still plugged in
3. Remove battery and power cord and push power button for 5 secs
4. Replace battery amd power cord
5. Let fully charge again.
Once charged, power up while pluged in, once phone is fully loaded un plug and monitor battery,
None root battery calibration should be finished.
Sent from my PC36100 using xda premium
When it happens to me... I inmediatly replug the charger and wait... the second time I umplug I get 100% and It seems to repair the issue for the future charges.
i noticed this too! sometimes i do get 100% after charging. But most of the times its 98% immediately after unplug! And i have my battery calibrated too!:/
same issue
any solution for this guys?. I've calibrated my battery so many times and it is not fixing the 98% charge when unpluggin
mine's not...
try screen-on charging...
go to settings>deveLopment>check stay awake(charging)
if you're in Gingerbread version (2.3.4) when battery reached 99%, you"LL need to wait 1 more hour to make it fuLLy charged...
that's it!
tried and tested by most android users...
just charge it without using to avoid excessive heat of your device... :good:
What about first time using battery? Charge the battery 100% first or let it drain to 0% then fully charge?
I bought 2400mah battery, but cant get significant performance, fully charged first time use..
I think you were ripped off.
we will miss you Nicholas.... /s
If your going to buy an aftermarket battery. You get what you pay for. I ordered a mugen 1800mah delivered in 4 days from Hong Kong. My synopsis Bloody brilliant!
Waiting for my Jiayu g2s to be delivered
Related
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.
Click to expand...
Click to collapse
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
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
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
Click to expand...
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
Hello Everyone,
I've just flashed CM9 stable version and wanted to calibrate my battery.
First, it's not charged to 100% even though I've charged it overnight. Then I've tried to calibrate it.
(1. Charge your phone to 100% full.
2. Reboot to CWM (recovery)
3. Scroll down using volume keys and choose advanced
4. Choose wipe battery stats
5. Reboot phone.
6. Without charging your phone at all... let it die completely until it shuts off.
7. Plug your phone in and without a break let it charge to 100%)
However, that did not work for me. It still charges to 98%, no matter charging overnight. I can't see 100%, even 99%
Any ideas?
Edit: And one more question: Doing a full wipe removes battery stats file?
Thanks in advance
ufuuuck said:
Hello Everyone,
I've just flashed CM9 stable version and wanted to calibrate my battery.
First, it's not charged to 100% even though I've charged it overnight. Then I've tried to calibrate it.
(1. Charge your phone to 100% full.
2. Reboot to CWM (recovery)
3. Scroll down using volume keys and choose advanced
4. Choose wipe battery stats
5. Reboot phone.
6. Without charging your phone at all... let it die completely until it shuts off.
7. Plug your phone in and without a break let it charge to 100%)
However, that did not work for me. It still charges to 98%, no matter charging overnight. I can't see 100%, even 99%
Any ideas?
Edit: And one more question: Doing a full wipe removes battery stats file?
Thanks in advance
Click to expand...
Click to collapse
Once it shows charged on 98%, just remove the charger and then plug it again, it'll start charging again and maybe it'll go till 99% or 100% and will show charged again ..
doing full wipe doesn't remove battery stats
ishangoyal said:
Once it shows charged on 98%, just remove the charger and then plug it again, it'll start charging again and maybe it'll go till 99% or 100% and will show charged again ..
doing full wipe doesn't remove battery stats
Click to expand...
Click to collapse
I will try it tomorrow.
Thanks anyway.
Wiping battery stats is a myth. Your battery may just be starting to go, it is old now.
Sent from my GT-I9000 using xda premium
Maybe try this way:
Wait til charged to, in your case 98%, shutdown phone.
Reconnect charger.
Don't boot phone, wait until charged to 100%.
Boot normally.
If this doesn't work, try to wipe bat stats and repeat this solution.
Sent from my GT-i9001 using xda premium
ufuuuck said:
Hello Everyone,
I've just flashed CM9 stable version and wanted to calibrate my battery.
First, it's not charged to 100% even though I've charged it overnight. Then I've tried to calibrate it.
(1. Charge your phone to 100% full.
2. Reboot to CWM (recovery)
3. Scroll down using volume keys and choose advanced
4. Choose wipe battery stats
5. Reboot phone.
6. Without charging your phone at all... let it die completely until it shuts off.
7. Plug your phone in and without a break let it charge to 100%)
However, that did not work for me. It still charges to 98%, no matter charging overnight. I can't see 100%, even 99%
Any ideas?
Edit: And one more question: Doing a full wipe removes battery stats file?
Thanks in advance
Click to expand...
Click to collapse
charge phone to 100% 3 times and clean battery stats - works !
ishangoyal said:
Once it shows charged on 98%, just remove the charger and then plug it again, it'll start charging again and maybe it'll go till 99% or 100% and will show charged again ..
doing full wipe doesn't remove battery stats
Click to expand...
Click to collapse
yeah that worked for me. thanks.
commercially nilsctu
As far as I know, battery calibration by wiping battery stat's is not working. I've read an article about that when someone's been interviewing with one of Google's Android developers and she said that it's like deleting your browser history, it won't speed up your internet. Same goes with battery stats. It's only information about how long you've charged your battery last time, when you've plugged ur phone etc. etc.
It's more like placebo effect, you delete battery stats and you think it's "living" longer but it's not.
Not charging to 100% is (1)Kernel or (2)ROM issue to not showing correctly battery percentage (besides that battery should be full, it's only showing bad variables)
Grzechu789 said:
Not charging to 100% is (1)Kernel or (2)ROM issue to not showing correctly battery percentage (besides that battery should be full, it's only showing bad variables)
Click to expand...
Click to collapse
It could also be one of the duff chinese replacement batteries that always show 3923nV.
I have just had 2 bilitong batteries that will only charge to 99% and have a vastly lower capacity than claimed.
The 'cameron seino' battery i have also reports 3923 mV all teh time but does charge to 100% (update after full charge - cameron gives correct voltage and early testing shows excellent performance)
The original battery shows everything correctly and still charges to 100%
the only aftermarket battery which iv seen to charge up properly and give the expected life span is one made by a company called anker. I would personally go for an anker battery if I could not source a genuine Samsung one.
slybunda said:
the only aftermarket battery which iv seen to charge up properly and give the expected life span is one made by a company called anker. I would personally go for an anker battery if I could not source a genuine Samsung one.
Click to expand...
Click to collapse
I agree that a new genuine battery is the best option - full stop.
The oversize cameron battery i am currently testing in my desire is proving a mix of good and bad. Definate improvement in battery life, although still problems in reporting correct mV, and rattles a bit in the oversized back (should be easily fixable)
Gonna get around to antutu battery tesating the 2 year old original 1400mAh, poor bilitong 1650mAh (ROFL) and 2400mAh cameron
How can I calibrate my unrooted phone
Sent from my Nexus 6 using XDA Free mobile app
You can't. Even if you are rooted.
Run your battery all the way down until it shuts off. Charge, uninterrupted, until fully charged. Voila! Battery calibrated.
Battery calibrating apps/techniques have been useless for quite some time.
carlz28 said:
You can't. Even if you are rooted.
Run your battery all the way down until it shuts off. Charge, uninterrupted, until fully charged. Voila! Battery calibrated.
Battery calibrating apps/techniques have been useless for quite some time.
Click to expand...
Click to collapse
My phone has gone through many charge and shutdown cycles and not even this has changed my 5% shutdown.
Have you tried leaving your phone plugged in after 100%? Let it trickle charge for an hour or two.
The battery 'calibration' stuff that people do is what android does automatically after getting to nearly full charge.
It hasn't been needed since gingerbread.
I have had this issue happen a few times, what I do is plug it in to turn it on , then try to run it down till 0 and then put it on charge while off till its 100% and leave it there for a few hours. Then after a few cycles, this occurs again. I dont charge in the middle, always charge at night until 100% and 30 minutes beyond that.