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Hello.
So, we all know that Android is kinda messed up regarding battery % and that we need to calibrate it in each build etc.
The thing is, when it is not calibrated and Android shows 89% when it is really 100%, won't the battery overcharge?
And why did WinMobile never had this problem? What is the method used in WinMo?
Well the basic thing is whenever you flash a new rom on your device, it looks at the current voltage of your battery and decides what percentage it has. So you will have to recalibrate the battery every time flash new rom. But to be frank I never did that and I have no problems with my battery. What I do is before flashing a new Rom I make sure to charge my phone overnight. Another thing you can do is use widgets like battery monitor widget to look at the voltage when its 100%. It should be somewhere around 4200mv.
jalshah05 said:
Well the basic thing is whenever you flash a new rom on your device, it looks at the current voltage of your battery and decides what percentage it has. So you will have to recalibrate the battery every time flash new rom. But to be frank I never did that and I have no problems with my battery. What I do is before flashing a new Rom I make sure to charge my phone overnight. Another thing you can do is use widgets like battery monitor widget to look at the voltage when its 100%. It should be somewhere around 4200mv.
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Yeah I know that. But if it is not calibrated and for example it is 89% when the battery is 100% charged, can't it overcharge?
I noticed that when the battery reaches the appropriate voltage the current decreases from 800mA to 60mA or so... So I assume that there's some hardware check that disables charging even if the indicator shows 89%...
DeadVirus said:
Yeah I know that. But if it is not calibrated and for example it is 89% when the battery is 100% charged, can't it overcharge?
I noticed that when the battery reaches the appropriate voltage the current decreases from 800mA to 60mA or so... So I assume that there's some hardware check that disables charging even if the indicator shows 89%...
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the battery has a chip attached to it that prevents overcharging
casemandan said:
the battery has a chip attached to it that prevents overcharging
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Nice then
And what about windows mobile? How it always knew the right % ? Why does Android has problems with this?
DeadVirus said:
Nice then
And what about windows mobile? How it always knew the right % ? Why does Android has problems with this?
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Windows knew it because windows was the first rom to be flashed on that device. After that we flashed another rom(android) which is not meant to be on this phone. hehe...
jalshah05 said:
Windows knew it because windows was the first rom to be flashed on that device. After that we flashed another rom(android) which is not meant to be on this phone. hehe...
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I was not talking about stock WinMo ROM, but about when we change to a custom WinMo ROM... it is also not the first ROM but it knows the correct %...
DeadVirus said:
I was not talking about stock WinMo ROM, but about when we change to a custom WinMo ROM... it is also not the first ROM but it knows the correct %...
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Well I am not a dev or know anything about programming side. But according to my understanding, other winmo roms are basically same as the original ROM with only some visual changes. So the files right at the system level will be unchanged mostly. But android builds are made from different phones' roms. So their system files may have to be edited....
Let's say an android phone with 5V battery rating would rate 4V as 80% whereas same ROM if put on different phone with 4V battery rating, it will still show 80% though the battery is actually 100% charged.
Though I might be wrong. Its just a guess....
After i flashed cm7 a long time ago i noticed that after total charging (100%), when i disconnect the phone it immediately says 99%, i have callibrated the battery and still the same... is not something too important either, but it stills bugging me :/
any help?
btw, it's a red lens defy...
thats just how it is. When plugged in its using the power from the plug and when you disconnect it, then its drawing power from the battery so it will read less. There is no helping it, just what happens it doesnt mean your phone will discharge faster or anything.
99% battery after plug off happens to me always on every rom I tried (even stock one).
Actually I don't care at all.
Bye,
Peppe
gmcgmc said:
99% battery after plug off happens to me always on every rom I tried (even stock one).
Actually I don't care at all.
Bye,
Peppe
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On stock...? Rally? Didn't know there was a stock ROM with 1% increment. Stock ROM's only have a regular battery indicator and in battery's settings it shows the battery state in 10% increments - 100; 90; 80 and so on...
Auris 1.6 vvt-i said:
On stock...? Rally? Didn't know there was a stock ROM with 1% increment. Stock ROM's only have a regular battery indicator and in battery's settings it shows the battery state in 10% increments - 100; 90; 80 and so on...
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I think about-status shows percentage in 1 or 5% steps not sure... din use stock much...
Sent from my MB526 using xda premium
Auris 1.6 vvt-i said:
On stock...? Rally? Didn't know there was a stock ROM with 1% increment. Stock ROM's only have a regular battery indicator and in battery's settings it shows the battery state in 10% increments - 100; 90; 80 and so on...
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Oops Probably I've used the stock rom too little... My memory is bad. But the part on CM is true
Sorry for the misleading information,
Peppe
nogoodusername said:
I think about-status shows percentage in 1 or 5% steps not sure... din use stock much...
Sent from my MB526 using xda premium
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I can bet my monthly sallary on 10%
hav you tried to calibrate your battery? in play store are several tools.
Hairo The Blue Mage;26400435 i have callibrated the battery and still the same..[/QUOTE said:
He said he calibrated it. I calibrated mine with battery calibrator and with deleting battd.bin and restarting with no battery and both do exactly as he says. There is no fix its just that the battery is fuller when plugged in. If you have battery monitor the mV will go down as it stops drawing power off the plug and draws it off the battery. You can never be 100% when you are drawing power off the battery its a simple fact
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kelbygreen said:
He said he calibrated it. I calibrated mine with battery calibrator and with deleting battd.bin and restarting with no battery and both do exactly as he says. There is no fix its just that the battery is fuller when plugged in. If you have battery monitor the mV will go down as it stops drawing power off the plug and draws it off the battery. You can never be 100% when you are drawing power off the battery its a simple fact
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Well, i had a Moto CliqXT(Quench) running cm7 that keeped the 100% for a while after unplug, that's why i asked... but thanks for the info, i thought my battery was damaged or something like that...
maybe it's something related to the kernel, as the cliqxt have the bootloader unlocked and many optimizations were made to it's kernel... just wondering...
Hi all,
I have a MT4G running cm10.1. Prior to this, I was running toasted marshmallow's latest build.
Over the last week or so, I've been having some real problems with the phone. While in my pocket, it will discharge rapidly and switch itself off within a couple of hours of being off the charger. Other times, it will read a high battery percentage (80-90%) but will switch itself off randomly. When I go to switch it back on, the battery percentage reads 1%, and it switches off again soon after. If I try to switch it on again, it doesn't make it through the load process before switching off. It seems like the battery is completely discharged.
But (and here's the weird part): if I stick it on the charger, give it a few minutes, then switch it back on, the battery percentage will read 58% (both times I've checked this, it was 58%), and will then charge from there. It stayed on for the rest of the day when I took it off the charger (at 65% charge).
Edit: I though this might be a battery contact/connection problem, but shaking the phone / playing with the battery cover doesn't seem to bring it on. To be safe, I used a pencil eraser on the contacts and have a small piece of card in between the battery cover and the battery, to give more support to the battery. No reboots so far, but it's only been an hour or so.
So:
- is my battery dead, and can this be fixed by a replacement?
- is battery calibration needed (I know this is a controversial question; the consensus seems to be it does nothing)
- Is this more likely a hardware problem with the phone? I have noticed that the charger microusb cable does seem a looser fit compared with before, but since the battery was still charging I figured it wasn't a problem
Thanks for any help troubleshooting this!
Lee
Sounds like your battery is done...replacements are cheap...
What he^^ said.
Anker batteries are good and very inexpensive. Also, "calibration" does nothing. Just flash ROMs on a full charge and call it good.
estallings15 said:
What he^^ said.
Anker batteries are good and very inexpensive. Also, "calibration" does nothing. Just flash ROMs on a full charge and call it good.
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Thanks for the replies - new battery on its way.
Lee
ROM
lee_alkureishi said:
Thanks for the replies - new battery on its way.
Lee
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Try to constantly check your what things are draining your battery, sometimes it could be the phone's data or it could be the sleep(idle) state of the phone, it could be many things. I tend to be always aware, check and read all the possible outcomes for the battery drain. For me is usually maintaining the data on my phone turn ON.
I have been having the same issue with my 10.1 ROM. It's not that old of a battery either so I don't think that it is dead; is there any other advice other than purchasing a new battery?
HOOAH.Brown said:
I have been having the same issue with my 10.1 ROM. It's not that old of a battery either so I don't think that it is dead; is there any other advice other than purchasing a new battery?
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Switch ROMs and compare battery life? Also, check out Better Battery Stats. It can help you track down what causes drain.
estallings15 said:
Switch ROMs and compare battery life? Also, check out Better Battery Stats. It can help you track down what causes drain.
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This is the third ROM (starting from an ICS ROM) and the battery life is the same so I know it's not the ROM. Thanks for the app recommendation. I am afraid that I might have a defective battery.
As it turns out my battery has now started to leak and swell. I am going to purchase a new Anker battery. Thanks for all the assistance.
I need some suggestions on how to calibrate the battery on my n4. It got miscalibrated when I did the update 4.2 to 4.3 and I haven't been able to calibrate it since then, a week ago.
I tried using battery calibration from the store but it didn't work, I tried charging the phone from 0 to 100 and it didn't work.
I remember I had the same problem 2 years ago with my Atrix and I solved it by wiping the battery stats from recovery, but now twrp and Cwm removed this feature and I don't know how to solve my problem.
Maybe it would help flashing all back to stock with the toolkit?
If you have any suggestions I'd really appreciate it.
http://forum.xda-developers.com/showthread.php?t=1460553
qoolix said:
http://forum.xda-developers.com/showthread.php?t=1460553
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Just the answer I didn't expected, and frankly a pretty useless answer, everybody knows that battery calibration doesn't improve battery life.
But I have other problems, like I turn off my device at 80% and when I turn it on it's at 77%. Do you think that's normal?
Elwood_It said:
Just the answer I didn't expected, and frankly a pretty useless answer, everybody knows that battery calibration doesn't improve battery life.
But I have other problems, like I turn off my device at 80% and when I turn it on it's at 77%. Do you think that's normal?
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Either faulty battery or do the following:
1.Completley discharge N4
2.Charge fully(+2 hours after hitting 100&) WITHOUT disconnecting from the charger.
3.Repeat for better results.
Sent from my Nexus 4 using xda app-developers app
failly said:
Either faulty battery or do the following:
1.Completley discharge N4
2.Charge fully(+2 hours after hitting 100&) WITHOUT disconnecting from the charger.
3.Repeat for better results.
Sent from my Nexus 4 using xda app-developers app
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Thanks for the answer. Should I carghe while it's off or on or it doesn't matter?
Elwood_It said:
Thanks for the answer. Should I carghe while it's off or on or it doesn't matter?
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To be honest, I don't know.
But if I would be you I would just let it charge while it's off(So the big ass white battery icon).
Let me know if you got your battery sorted after the method I posted!
Elwood_It said:
Just the answer I didn't expected, and frankly a pretty useless answer, everybody knows that battery calibration doesn't improve battery life.
But I have other problems, like I turn off my device at 80% and when I turn it on it's at 77%. Do you think that's normal?
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Click to collapse
You mean off as in all the way off? If so, then that ~3% is being used when the phone boots.
korockinout13 said:
You mean off as in all the way off? If so, then that ~3% is being used when the phone boots.
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I've had many phones, and none of them lost charge during the boot, at least not that many. I think that's the clear sign of battery miscalibration, I've had this problem before with another phone. Besides that, I've had a strange behaviour of the battery, for example I saw it lose 4% in 1 second, from 66 to 62 in a blink of an eye.
Elwood_It said:
I've had many phones, and none of them lost charge during the boot, at least not that many. I think that's the clear sign of battery miscalibration, I've had this problem before with another phone. Besides that, I've had a strange behaviour of the battery, for example I saw it lose 4% in 1 second, from 66 to 62 in a blink of an eye.
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It's not that it's losing charge quickly, it's just the OS (or the hardware itself) doesn't always do the best job of reading it. There's not much you can do about that, and it's really not an issue unless you make it so by staring at your battery level all day.
korockinout13 said:
It's not that it's losing charge quickly, it's just the OS (or the hardware itself) doesn't always do the best job of reading it. There's not much you can do about that, and it's really not an issue unless you make it so by staring at your battery level all day.
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Hi,
I'm having a similar issue. Phone rebooting to weird battery levels (not the %age it shutdown at).
Phone shutting down at 31% battery and rebooting to 0%.
I tried charging only to 100% yesterday with the phone ON.
Do I have to charge it even after it's charged to 100%?
failly said:
To be honest, I don't know.
But if I would be you I would just let it charge while it's off(So the big ass white battery icon).
Let me know if you got your battery sorted after the method I posted!
Click to expand...
Click to collapse
I tried charging through the night and then discharging it completely and charging it completely again. I also tried deleting the batterystats file (even though I know it doesn't do anything)
So what do you suggest I should do? Get the phone replaced or get the battery changed?
I live in India and the phone is from Canada, so replacing the phone will take some time but I can get the battery replaced for around $20
Also my nexus is also showing +ve mA values while it's not charging, and the values are absolutely crazy, +268, +168, +1171 (in batter monitor widget)
Please tell me what I should do.
japmeet said:
I tried charging through the night and then discharging it completely and charging it completely again. I also tried deleting the batterystats file (even though I know it doesn't do anything)
So what do you suggest I should do? Get the phone replaced or get the battery changed?
I live in India and the phone is from Canada, so replacing the phone will take some time but I can get the battery replaced for around $20
Also my nexus is also showing +ve mA values while it's not charging, and the values are absolutely crazy, +268, +168, +1171 (in batter monitor widget)
Please tell me what I should do.
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Before you replace the battery try to disconnect the battery's flex cable and reconnect it [after you charge to device to 100% and turn it off of course] check if its 'reset' the battery.
As usual, BetterBatteryStats and Gsam Battery Monitor are among the first apps that I install on my new devices and I often use them to check what apps are eating my battery. The two apps worked perfectly on my non-rooted S9+ running OneUI (Android Pie) with some extra adb commands, but on this S10+ they both don't work; BBS says "No stats have been collected yet", GSam is laggy, only shows the %1, %0... and drains my battery like hell during screen off (4-5%/hour).
So has anyone succeeded in making any of the two apps work? Or are you using another app with the same function?
Thanks for opening this thread. Yes, I am having the exactly same experience like you.
I am experincing the exact same thing!
Thought I was going mental.
I'm running AccuBattery and CPU spy reloaded, both apps report that my phone never goes to deep sleep, but I can't define what causes it
The actual values seem to be fine, though. Mine uses under 1 percent per hour over night after disabling the sonos app - it is a disgrace ever since. Exynos, 512GB S9+.
I'm running accubattery and in my case it DOES register deep sleep. So the lack of feel sleep for some might be caused by another issue that actually blocks the phone from deep sleeping
latino147 said:
I'm running accubattery and in my case it DOES register deep sleep. So the lack of feel sleep for some might be caused by another issue that actually blocks the phone from deep sleeping
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What variant are you using? Exynos or SD?
GialanG said:
I'm running AccuBattery and CPU spy reloaded, both apps report that my phone never goes to deep sleep, but I can't define what causes it
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Click to collapse
had the same issue no deep sleep. but this solved the issue for me follow this steps.
go to settings - general - reset - dont factory reset - but reset all other 3 options. 1-network reset 2. accessibility reset. 3. all settings reset then redo the settings as per ur liking it ll fix the issue.
Same issue here, glad I'm not going crazy
corwin_amber said:
The actual values seem to be fine, though. Mine uses under 1 percent per hour over night after disabling the sonos app - it is a disgrace ever since. Exynos, 512GB S9+.
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What is your messured battery capacity? Mine is 3650-3700...of 4100...wtf?
I had this same issue, and I uninstall accubattery, install it again, and reset the battery calibration reading using that code after I cleaned system cache on recovery *#0228#, yesterday I decided to turn the device off as I though my battery was going full crazy downhill drainingtown (joke) and turn it on, left it on airplane mode overnight with bluetooth on, and it has not stabilise and accubattery does report deep sleep. Also I check the battery every 2-3 hours to see how is the drain. Running since 5 am european time at 34% now at 11% and it is 11:45 AM european time as I write this post
GialanG said:
What variant are you using? Exynos or SD?
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Exynos.
But try yash kariya's solution in this topic. It worked for others too.
@m_duke Mine says 3900 mAh, ATM.
Gsam worked Just fine on my phone...
corwin_amber said:
@m_duke Mine says 3900 mAh, ATM.
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You chcecked on the full charge cycle?
m_duke said:
What is your messured battery capacity? Mine is 3650-3700...of 4100...wtf?
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m_duke said:
You chcecked on the full charge cycle?
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Nope, Just 'regular' usage.
corwin_amber said:
Nope, Just 'regular' usage.
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If it's based on charging from like 60 to 100, or 25-85 % and so on, it will only show you some rough estimates, far from real capacity possibly. 1-100 % charges are far more accurate. For what i see, Samsung is bullshiting with the 4100mAh capacity, or controller software is limiting it to about 3700-3800 regions. In the menu it clearly says- 4100 typical and 4000 minimum capacity...
AestenD said:
Gsam worked Just fine on my phone...
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It works on mine too, but only the basic stats. The problem only appears after the adb command is made. Have you used the command to enable more stats yet?
m_duke said:
If it's based on charging from like 60 to 100, or 25-85 % and so on, it will only show you some rough estimates, far from real capacity possibly. 1-100 % charges are far more accurate. For what i see, Samsung is bullshiting with the 4100mAh capacity, or controller software is limiting it to about 3700-3800 regions. In the menu it clearly says- 4100 typical and 4000 minimum capacity...
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Don't forget the basic li-ion battery rules, one of them is that at least 5% of your total charge will be kept as reserve in case of overdraining, about 200mAh of your battery in this case are there to keep your battery rechargable, every battery powered device works like that, no need to accuse Samsung of anything regarding that aspect.
Corv0 said:
Don't forget the basic li-ion battery rules, one of them is that at least 5% of your total charge will be kept as reserve in case of overdraining, about 200mAh of your battery in this case are there to keep your battery rechargable, every battery powered device works like that, no need to accuse Samsung of anything regarding that aspect.
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Sure...but i messured 3500 mAh on phone turned off...bit too much of a difference, hm? On the other hand, messuring iPhone 8 gave me almost exactly what was stated , the same with 20000mAh powerbank, messured even bit more...so i'd just encourage others to test and compare. 3h20min SoT also seems weak tbh...