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I installed the Serendipity Rom a few days ago and I noticed the battery goes down to 98% as soon as I unplugged. Some occassions I overcharge an hour after it has 100%, some occassions I unplugged as soon as it said 100%. Charged it with the phone on, and some occassions the phone off. I tried to use bump charging, but still the same issue.
I also notice the battery life is not as good as stock either. I used a Stock rogers froyo before.
Any ideas what might be the cause of this? How I use the phone is the same way. I think its the phone being on standby that's causing the drain. Usually when I sleep the phone goes down by about 2-3% in standy mode by the next morning. With this ROM it goes down like 8% during sleep.
Any ideas?
Edit: I did not realize this was in the development section. It was intended to be in Q/A
Run battery dead and do a full uninterrupted charge to 100%. Turn off any features or apps that would blatently be killing battery as well.
likiud said:
I installed the Serendipity Rom a few days ago and I noticed the battery goes down to 98% as soon as I unplugged. Some occassions I overcharge an hour after it has 100%, some occassions I unplugged as soon as it said 100%. Charged it with the phone on, and some occassions the phone off. I tried to use bump charging, but still the same issue.
I also notice the battery life is not as good as stock either. I used a Stock rogers froyo before.
Any ideas what might be the cause of this? How I use the phone is the same way. I think its the phone being on standby that's causing the drain. Usually when I sleep the phone goes down by about 2-3% in standy mode by the next morning. With this ROM it goes down like 8% during sleep.
Any ideas?
Click to expand...
Click to collapse
It's working properly. When 100% charge is reached the controller stops charging to prevent damage to the battery. It then lets the battery charge "float" down a few points before charging back up to 100% again. Depending on when you happen to unplug in one of these cycles, you might be anywhere between 97-98 and 100% charge.
This might be a better question for another section.
From what I understand its an issue with 2.2.1. There is nothing you can do to fix it. I also don't get great battery life with serendipity. I switched to the suckerpunch kernel to undervolt. Seems to be working out pretty well
Sent from my SAMSUNG-SGH-I897 using XDA App
Smallsmx3 said:
From what I understand its an issue with 2.2.1. There is nothing you can do to fix it. I also don't get great battery life with serendipity. I switched to the suckerpunch kernel to undervolt. Seems to be working out pretty well
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
It's not an issue like you said. It's a feature. Read the previous post.
The dropping to 98% is a Samsung thing, it's supposed to increase the life of your battery.
Yeah, i heard it does that to keep it from over charging when left plugged in.
ls377 said:
The dropping to 98% is a Samsung thing, it's supposed to increase the life of your battery.
Click to expand...
Click to collapse
It's a Li-on thing, not just Samsung. Same thing occurs with all lithium battery chargers (other phones, cameras, laptops) to prevent overcharging. Some other chargers kick back in as soon as it drops to 99% though, whereas this one does not.
ninjuh said:
Run battery dead and do a full uninterrupted charge to 100%. Turn off any features or apps that would blatently be killing battery as well.
Click to expand...
Click to collapse
That's what I did. The apps and features were the same as it was with the rogers stock froyo. I'll see if the battery gets better the next few days.
likiud said:
That's what I did. The apps and features were the same as it was with the rogers stock froyo. I'll see if the battery gets better the next few days.
Click to expand...
Click to collapse
That rogers stock must be nice, ATT stock gives you 50% battery in 4-5 hours :/
moved to general as not android development
likiud said:
I installed the Serendipity Rom a few days ago and I noticed the battery goes down to 98% as soon as I unplugged. Some occassions I overcharge an hour after it has 100%, some occassions I unplugged as soon as it said 100%. Charged it with the phone on, and some occassions the phone off. I tried to use bump charging, but still the same issue.
I also notice the battery life is not as good as stock either. I used a Stock rogers froyo before.
Any ideas what might be the cause of this? How I use the phone is the same way. I think its the phone being on standby that's causing the drain. Usually when I sleep the phone goes down by about 2-3% in standy mode by the next morning. With this ROM it goes down like 8% during sleep.
Any ideas?
Click to expand...
Click to collapse
You can try this.
After full charged message comes up, unplug power cord, battery from 100% drop to 98% or 96% immediately.
Then plug power cord again, charge again until fully charge (again).
Unplug power cord, see if battery level can hold on 100%
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Why don't people read in the threads that they get Rims from. This has been covered numerous times.
Sent from my Captivate running Cezar's Continuum v.2.1 with SuckerPunch kernel.
Unplug, replug worked great. Thanks!
johan8 said:
You can try this.
After full charged message comes up, unplug power cord, battery from 100% drop to 98% or 96% immediately.
Then plug power cord again, charge again until fully charge (again).
Unplug power cord, see if battery level can hold on 100%
Click to expand...
Click to collapse
You might as well have a messaging phone if your never even going to turn the screen on
Im having this problem running di11is 6.0 rom...I've read the posts and everybody claims BETTER battery life with the rom...if I use it it drops really quick...I just text and check youtube for about 5 minutes and it drops about 2%...if it sits undisturbed it doesn't drop fast at all
Sent from my SAMSUNG-SGH-I897 using XDA App
newter55 said:
You might as well have a messaging phone if your never even going to turn the screen on
Click to expand...
Click to collapse
What do you mean ?
My screen use auto brightness.
I get the same problem. But what I do is that I leave it for an extra 30min even after it says it's fully charged, that way when i unplug it, it will still be full.
Well, to wipe data and wipe factory reset before you flash a new rom may be helpful. And also, just ignore the 98% bat thing. It really doesn't matter.
johan8 said:
What do you mean ?
My screen use auto brightness.
Click to expand...
Click to collapse
The comment was in regards to your screen shot. What is the display time? Never seen display in the 60s personally...or even 70s for that matter.
I've had my phone for quite a while now and played around with it a lot. Originally, I power cycled the battery, thinking it was the best thing to do. To my dismay, my battery barely lasted me through the day. No matter what I did, I could not get it to match what some other people indicated they get out of their battery - 35-40 hrs or more. I rooted, dimmed the display, installed JuiceDefender, uninstalled Juice Defender, unrooted, power cycled 3 or 4 times again...
...and then one day I woke up, probably three month into me having the phone, and the phone was amazing. I came home from work at 5 pm with 72% still on the battery. I was in heaven. Until a month ago.
A month ago, I accidentally let the battery run out completely. I had done that before (though I try not to) so I thought it wasn't a big deal. I hadn't installed any new apps or done anything differently, but now my battery will hardly last me through the day again. My once amazing battery is less then average again.
I've tried everything you normally read on forums. I have a good idea of how to save battery life - it's set to Maximum Battery Savings - and have tried all of the stuff that is typically recommended. I've not killed apps, but I don't think that would really help to begin with anyway.
So...here I am to ask if anybody has any other ideas for me. Anything at all? The thing is...I didn't change anything when my battery was cut down to less than normal size!!
Help?!?
Rogue app update. Try bad ass battery monitor should give you an idea which one
Motorola lied and I'm still locked mb865
Thanks, I will try that. I tried Battery Monitor, which told me AT&T Address Book was a main culprit. Doubt that since I could never do too much about that one...
This is what you'll see under the apps tab. Much more useful than others I've tried.
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Motorola lied and I'm still locked mb865
So right off the bat, here is what it says:
Phone 29.3%
Screen 2.1%
Phone Radio 45%
Wifi Active 10.1%
Held Awake 2.6%
Bluetooth 0.0%
App Usage 11.1%
For Phone Radio, the Signal Strength from 1-5 has 2 listed as 72%
For App usage there's not much beside the kernel to report.
How does that help me? My reception at work is always iffy - but it's always been that way so that cannot be the culprit.
Pilgrimtozion said:
I've had my phone for quite a while now and played around with it a lot. Originally, I power cycled the battery, thinking it was the best thing to do. To my dismay, my battery barely lasted me through the day. No matter what I did, I could not get it to match what some other people indicated they get out of their battery - 35-40 hrs or more. I rooted, dimmed the display, installed JuiceDefender, uninstalled Juice Defender, unrooted, power cycled 3 or 4 times again...
...and then one day I woke up, probably three month into me having the phone, and the phone was amazing. I came home from work at 5 pm with 72% still on the battery. I was in heaven. Until a month ago.
A month ago, I accidentally let the battery run out completely. I had done that before (though I try not to) so I thought it wasn't a big deal. I hadn't installed any new apps or done anything differently, but now my battery will hardly last me through the day again. My once amazing battery is less then average again.
I've tried everything you normally read on forums. I have a good idea of how to save battery life - it's set to Maximum Battery Savings - and have tried all of the stuff that is typically recommended. I've not killed apps, but I don't think that would really help to begin with anyway.
So...here I am to ask if anybody has any other ideas for me. Anything at all? The thing is...I didn't change anything when my battery was cut down to less than normal size!!
Help?!?
Click to expand...
Click to collapse
Draining your battery until the device powers down isn't something to worry about. The battery can be "seasoned" when you first pull it out of the box by allowing it to drain until power down, then while still powered off, plug in your charger without powering the phone back up, and allowing it to charge fully, then power on/drain to power down/charge while powered off/power back on repeatedly three to four times. This is a common practice for some people (perhaps as neurotic about such things as myself) to make sure your battery is getting full charging cycles.
Partial charging cycles won't hurt anything either. For instance, you can charge fully, then at some point during the day, plug your charger in and charge it from say, 70& to 100% without any issues. The device has built-in programming that will not allow for overcharging, which some users seem to have concern about. That being so, you can plug in your phone, leave it charging (even while at 100%) for as long as you see fit without having any "overcharging" to the battery occurring.
Sounds like you do have a rogue app that is consuming battery, so that would be the first thing to investigate -as mtlion stated. There are some other steps that you can do, to ensure your battery is a full charge, as there are some instances where after flashing roms you can lose some of your battery reporting accuracy or even some battery life. But, see if you can track down which (if any) apps are consuming your battery, and that is an easy fix. Also, if you have questionable radio signal reception, that counld be a contributing factor as well. The phone will constantly look for a signal, and if it loses signal, start the scanning process until it can connect again. Though you may not have noticed this at first, this could also be the reason your battery consumption is so high.
If you experienced such a dramatic change in battery percentages after a full cycle, then could it be possible that the percentages were disoriented and you were mistaken into thinking you had a very high amount of charge left when you really didn't? It seems unlikely, but given the situation you described this fits.
Maybe you had the same battery performance all along, and the 70% showed when you were actually about to run out, but you never found out because you always charged before the bug revealed itself, and the bug was finally reset after your phone was drained.
I wish I could say that it was mistaken all along but I actually went two days without charging regularly. I'm trying to eliminate possibilities and so far have had a little bit of success. The rogue app does sound plausible.
So power cycling now really won't make a difference?
Pilgrimtozion said:
I wish I could say that it was mistaken all along but I actually went two days without charging regularly. I'm trying to eliminate possibilities and so far have had a little bit of success. The rogue app does sound plausible.
So power cycling now really won't make a difference?
Click to expand...
Click to collapse
If, after rooting or more likely that case after flashing a new rom, you often have battery reporting errors (as mentioned above), and re-calibrating the battery along with some steps I will outline for you below will ensure that your battery is getting a full charge, and the battery reporting accuracy is right on. As far as power cycling, I don't know that it does much good. I run my device in performance mode all the time, and with a CPU overclock of 1.25GHz and various tweaks, I have about a day an a half to a day and a quarter of full runtime from my battery. This is with moderate to heavy usage (calls, emailing, text, gaming, web browsing, etc.) so you should have no problems getting acceptable battery performance after following these steps:
1. Take the case off your Atrix 2 (one of the latter steps involves taking the battery out from the phone while it's plugged in. Make sure your case won't stand in the way.)
2. Install Battery Calibration app from the market
3. Plug in your Atrix 2 to charge while it's on, wait till it gets to a 100%
4. When the charge is 100%, open the BatteryCalibration app and lookup what the charge is in MV while at 100%. Write it down.
My Atrix 2 was showing ~3400MV while at 100%, which is definitely not the maximum capacity.
5. Discharge your Atrix 2 completely until it shuts off.
A good way of doing this quickly is by turning on wifi, and a video player.
6. Without turning on the phone plug it into a wall charger and let it get to 100%
7. When it's at 100%, without unplugging it from the wall charger, take off the battery cover, and take the battery out.
Your phone will "reboot" and show a Missing Battery icon.
8. Without unplugging the phone from the wall charger or turning it on, put the battery back in and wait until the phone recognizes the battery.
9. Your battery should now be recognized by the phone, and showing a charge % significantly lower than 100%.
Mine showed only 5%.
10. Let it sit there charging for 2-3 hours (or more).
My phone wouldn't charge past 10%, but yours might. The numbers don't matter much as the phone is definitely getting additional charge that could have been lost while flashing ROMs, etc.
11. After 2-3 hours (or more), turn the phone on while holding the volume down button and get into CWM.
Do not disconnect it from the charger still!
12. Wipe battery stats in CWM, reboot.
Do not disconnect it from the charger still!
13. When the phone turns on, go into Battery Calibration app again and look up your MV numbers -if you were like me, they should be significantly higher than before. After this whole process I had 4351MV at 100%, comparing to 3400MV before calibration.
Do not disconnect it from the charger still!
14. Before going to sleep - Install Watchdog Task Manager Lite from the market. Go into it's preferences, set CPU threshhold to 20%, check "Include phone processes", check "Monitor phone processes", check "Display all phone processes", set system CPU threshhold to 20% as well.
Do not disconnect it from the charger still!
15. Make sure your wifi and data connections are off. Now finally unplug the phone from the charger.
Go to bed, let your phone sleep too.
16. Success! Next morning check where your battery % is at and if you followed the instructions correctly / got lucky like me, your battery life should be 90% or more.
I went to bed with 98% and woke up to 94%. So, I consider this mission a success.
Does it make any difference whether I'm currently rooted or not? Cause I'm not...
Had the same issue and the only thing that really worked for me was to wipe the battery cache..... There are apps on the market but did not do the job well like this method.....
Fully charge phone
reboot with bootstrapper (recovery)
go to advanced menu
and then click wipe battery stats
Hope it works for you!!!!!
Pilgrimtozion said:
Does it make any difference whether I'm currently rooted or not? Cause I'm not...
Click to expand...
Click to collapse
The Battery Calibration app requires root permissions. You can always root using the "one-click-root" method, run the above steps, and then "click-to-unroot" using the .bat files within the root folder. It's easy, and takes no time at all to do so. But, it is all in how much fuss you want to put into solving your problem...
Once again it sounds like I need to root my device. Correct assumption?
hankbizzo5 said:
Had the same issue and the only thing that really worked for me was to wipe the battery cache..... There are apps on the market but did not do the job well like this method.....
Fully charge phone
reboot with bootstrapper (recovery)
go to advanced menu
and then click wipe battery stats
Hope it works for you!!!!!
Click to expand...
Click to collapse
Pilgrimtozion said:
Once again it sounds like I need to root my device. Correct assumption?
Click to expand...
Click to collapse
For the CWM Recovery wipe, yes you will need to be rooted.
Sent from my MB865 using xda premium
Rooted, wiped battery stats, and it went from less than 95% up to 98%. Interesting phenomenon. Thank you all heaps! I'll let you know if I run into any more issues.
Pilgrimtozion said:
Rooted, wiped battery stats, and it went from less than 95% up to 98%. Interesting phenomenon. Thank you all heaps! I'll let you know if I run into any more issues.
Click to expand...
Click to collapse
Glad you got things working!
Recalibrated battery this morning when my phone was fully charged. Not seeing much improvement, but I'm letting it run out and then charging it to 100%. Or should I actually be going through the 16 step process described above?
Pilgrimtozion said:
Recalibrated battery this morning when my phone was fully charged. Not seeing much improvement, but I'm letting it run out and then charging it to 100%. Or should I actually be going through the 16 step process described above?
Click to expand...
Click to collapse
You can try either, but calibration is obviously the less time consuming option. It may take a few "full charge to full drain" discharges to get the battery back to an acceptable capacity...
Sent from my MB865 using xda premium
Well, it's a few days later and nothing has made a significant difference. I've been using Badass Battery Monitor to find apps that use an exorbitant amount of battery, but even that has not made a great difference. I've deleted Instagram, a Bible app, a banking App, Temple Run (had a large Sensor Time used), but so far to no avail. It still shows that since I unplugged my phone less than 5 hours ago, the android system has a sensor time used of 1h57m - processes included are servicemanager, com.android.settings, and mid.
Battery Calibration has caused the max charge to be around 4350, but it has not impacted my actual battery life any. I drained it completely, recharged it, did that a few times, then just charged it when at 30-35%, nothing, nothing, nothing.
Any more ideas?
Nobody? At all?
Sent from my MB865 using xda app-developers app
Hello, forum
I'm running my OPO on PA 4.6. Over the past few weeks, the battery has lost calibration. It dies at 25% and remains at 100% for quite a while. How can I fix this? I'm open to wiping and reflashing.
Thanks
Raptor
Just try using a battery calibration app.
Transmitted via Bacon
timmaaa said:
Just try using a battery calibration app.
Transmitted via Bacon
Click to expand...
Click to collapse
Thanks for your response! The battery calibration app did the trick initially. However, a few days later, the issue seems to be returning. I've decided to just move on to Lollipop.
Once again, thank you.
Raptor
raptor402 said:
Thanks for your response! The battery calibration app did the trick initially. However, a few days later, the issue seems to be returning. I've decided to just move on to Lollipop.
Once again, thank you.
Raptor
Click to expand...
Click to collapse
did it help?
The same happens to me. I'm using the latest Sultan CM13. I'm trying to do a full recalibration - drain it until it refuses to turn on, keep it on the charger for 6+ hours without turning it on (black battery screen) and then repeat the procedure few times. I have some average success and the phone shuts down at about 10% instead of 50-60% but it doesn't seem to be perfectly calibrated just yet.
nitrobg said:
The same happens to me. I'm using the latest Sultan CM13. I'm trying to do a full recalibration - drain it until it refuses to turn on, keep it on the charger for 6+ hours without turning it on (black battery screen) and then repeat the procedure few times. I have some average success and the phone shuts down at about 10% instead of 50-60% but it doesn't seem to be perfectly calibrated just yet.
Click to expand...
Click to collapse
I'm not sure if you're aware, but you're doing some of the worst things you can do to a lithium battery. You should never completely discharge a lithium battery, and you should also refrain from keeping it at peak voltage (connected to charger once charging is complete). If you've done this a few times I'm not at all surprised that the thing shuts off at 10%, you're basically killing the battery and have depleted its overall health and life.
Heisenberg said:
I'm not sure if you're aware, but you're doing some of the worst things you can do to a lithium battery. You should never completely discharge a lithium battery, and you should also refrain from keeping it at peak voltage (connected to charger once charging is complete). If you've done this a few times I'm not at all surprised that the thing shuts off at 10%, you're basically killing the battery and have depleted its overall health and life.
Click to expand...
Click to collapse
I'm fairly sure that the battery has safety measures that prevents it from completely discharging or overcharging. When the battery is discharged, the phone actually turns on and says that the voltage is too low. Above 80% the phone also enters slow charging mode that takes hours to reach 100%.
Also, I'd rather kill my battery a bit faster (an original replacement battery costs just $10) instead of having a miscalibrated battery that could die whenever I need it.
nitrobg said:
I'm fairly sure that the battery has safety measures that prevents it from completely discharging or overcharging. When the battery is discharged, the phone actually turns on and says that the voltage is too low. Above 80% the phone also enters slow charging mode that takes hours to reach 100%.
Also, I'd rather kill my battery a bit faster (an original replacement battery costs just $10) instead of having a miscalibrated battery that could die whenever I need it.
Click to expand...
Click to collapse
Yeah, but by forcing it to drain until it won't turn on you're bypassing that safeguard. The safeguard is the phone switching off before you can discharge it too far. Your phone shouldn't take hours to go from 80% to 100%, that's another sign of bad battery health. If you keep doing these things the battery will be so bad that it will die completely randomly and at random percentages. By using these methods you're going to bring on much sooner the very situation that you're trying to avoid, only much worse. The correct way to calibrate a lithium battery is the following:
1. Charge to 100%
2. Discharge to 5%-10%
3. Charge to 100%
No need to force it to discharge further than is safe, no need to keep it on the charger longer than is necessary (which is pointless anyway), and it only needs to be performed once every month or so.
Heisenberg said:
Yeah, but by forcing it to drain until it won't turn on you're bypassing that safeguard. The safeguard is the phone switching off before you can discharge it too far. Your phone shouldn't take hours to go from 80% to 100%, that's another sign of bad battery health. If you keep doing these things the battery will be so bad that it will die completely randomly and at random percentages. By using these methods you're going to bring on much sooner the very situation that you're trying to avoid, only much worse. The correct way to calibrate a lithium battery is the following:
1. Charge to 100%
2. Discharge to 5%-10%
3. Charge to 100%
No need to force it to discharge further than is safe, no need to keep it on the charger longer than is necessary (which is pointless anyway), and it only needs to be performed once every month or so.
Click to expand...
Click to collapse
The device is turning on, just refusing to boot. You can't really bypass the safeguard, it is always there.
The slow charging phase after 75-80% is a normal function for all modern devices. You could check this review for more information.
I would do the procedure you are talking about but the reported 100% charge is not actually 100% until the device stays on the charger for hours. Otherwise it dies at 40-50% and refuses to boot up. Even if I charge it for hours, it would take a couple of hours or even a day for the battery to report below 100% charge. It could last an entire day with 100% charge and die at 50% the next day. I can never be sure what's the real charge of the battery, this is why I am willing to sacrifice a part of its life just to get a proper reading.
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Short charges tend to miscalibrate the battery... The phone was at 100% for about 24h, it will probably die at about 50%.
Using a battery recalibration works for me. However, every few weeks, I have to recalibrate the battery again. The recalibration process is pretty simple: recharge the battery to 100% and use the app. No need to drain the battery completely after that. Regular use fixes the battery over a few days.
raptor402 said:
Using a battery recalibration works for me. However, every few weeks, I have to recalibrate the battery again. The recalibration process is pretty simple: recharge the battery to 100% and use the app. No need to drain the battery completely after that. Regular use fixes the battery over a few days.
Click to expand...
Click to collapse
which app exactly? root needed?
Sent from my A0001 using Tapatalk
yuval48 said:
which app exactly? root needed?
Sent from my A0001 using Tapatalk
Click to expand...
Click to collapse
The app is Battery Calibration by NeMa. Root needed.
raptor402 said:
Using a battery recalibration works for me. However, every few weeks, I have to recalibrate the battery again. The recalibration process is pretty simple: recharge the battery to 100% and use the app. No need to drain the battery completely after that. Regular use fixes the battery over a few days.
Click to expand...
Click to collapse
so i tried it, but today my opo died at 19%.
how can you be sure that "Regular use fixes the battery over a few days"?
i mean, if today ill recalibrate, when(%) should i recharge? i cant be sure if the phone will die at 20%,10% or 1%..
I posted this somewhere a few days ago..
Turn the device off completely then plug it in. A battery indicator should appear on the screen. Don't turn the device on until it reads 100%. Once it's fully charged, power on the device and leave it plugged in until it's fully booted. All should be well.
Battery calibration apps are mainly for Android emulators on PC to get the Android "battery" indicator to match up with laptops. There are no benefits of running one on an Android device and will actually mess up the calibration MORE unless you use it in tandem with the steps above. Still pointless to use it, though.
Neroga said:
I posted this somewhere a few days ago..
Turn the device off completely then plug it in. A battery indicator should appear on the screen. Don't turn the device on until it reads 100%. Once it's fully charged, power on the device and leave it plugged in until it's fully booted. All should be well.
Battery calibration apps are mainly for Android emulators on PC to get the Android "battery" indicator to match up with laptops. There are no benefits of running one on an Android device and will actually mess up the calibration MORE unless you use it in tandem with the steps above. Still pointless to use it, though.
Click to expand...
Click to collapse
ok it seems to work, but when the battery reached 20+% is suddenly dropped down to 10% (also when i charged it, went up from 10% to 20%)
yuval48 said:
ok it seems to work, but when the battery reached 20+% is suddenly dropped down to 10% (also when i charged it, went up from 10% to 20%)
Click to expand...
Click to collapse
Do it, again. Sometimes it takes a few tries. Better if you let your device get down to ~20% then do it.
Battery problems are among the biggest concerns for smartphone users, which is why XDA offers so many useful tips for solving battery drain issues. If you notice that your battery performance and duration has decreased, it could be time to calibrate your battery. Today i will explain what battery calibration is, how to tell if you need to do it and how to do it, with or without root access.
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How do I know whether my battery is the problem?
First of all you need to identify why your battery performance has decreased: is it the Android system's calibration or the battery itself? We'll move onto calibration in the sections below, but you should check if your battery itself is damaged first.
If your phone has a removable battery cover, turn of your phone, remove the cover and inspect the battery. Look for bulges or leaks. In the image below, the battery of Galaxy S6 battery swelled up and pushed the non-removable back off the phone. If your phone also has a non-removable battery, keep an eye out for similar occurences. If your phone doesn't sit flat on the table anymore, that could also be a sign of a swollen battery.
If you're satisfied that the battery itself is not the problem, you can move on to the steps below. If you think your battery might be the problem (even after trying to recalibrate it), i would advise you to take it to a repair shop for an expert's opinion. If it turns out you need to replace the battery, go with an original or reliable third-party battery. Scrimping on a cheap knock-off battery only leads to more headaches in the long run.
Keep in mind that there are plenty of other things that can cause a battery to malfunction.
If you've just updated the firmware on your phone, battery drain is a common complaint, so you might want to clear the cache partition on your device.
What is calibrating a battery?
The Android operating system has a feature called Battery Stats, which keeps track of battery capacity, when it is full or empty. The problem is that it sometimes becomes corrupted and starts displaying data that isn’t real, which, for example, causes the phone to turn off before it reaches 0 percent. Calibrating your Android battery simply means getting the Android OS to correct this information so it is reflective of your actual battery levels once again.
It's important to understand that you can't actually calibrate the battery: it is, after all, just a cell that stores power and discharges. However, lithium-ion batteries do include a printed circuit board (PCB), which serves as a protection switch to stop them exploding or deep discharging.
Smartphone battery myths
Lithium-ion batteries don't have a memory so there's not much you need to do to keep them running as they should. The problem lies with how the Android system reads and displays the current capacity of the battery, not the battery itself.
The same goes for the myth that deleting the batterystats.bin file will magically recalibrate your battery. That file (on most devices anyway) simply stores data about what is using the battery when it is not being charged. It is also reset every time a battery is charged to over 80 percent and then disconnected.
The batterystats.bin file contains the info you see made prettier in the Battery section of your phone: it's the Android system keeping track of your battery's usage, per charge cycle. When we talk about battery calibration, it's the percentage meter that gets out of whack, and that is what we need to fix.
How to calibrate an Android device battery without root access
The old 'fully charge and discharge' approach stands as one of the simplest ways to 'recalibrate' your Android battery. But if your phone battery is causing you real problems, it's worth taking the risk.
Method 1
1. Discharge your phone fully until it turns itself off.
2. Turn it on again and let it turn itself off.
3. Plug your phone into a charger and, without turning it on, let it charge until the on-screen or LED indicator says 100 percent.
4. Unplug your charger.
5. Turn your phone on. It's likely that the battery indicator won't say 100 percent, so plug the charger back in (leave your phone on) and continue charging until it says 100 percent on-screen as well.
6. Unplug your phone and restart it. If it doesn't say 100 percent plug the charger back in until it says 100 percent on screen.
7. Repeat this cycle until it says 100 percent (or as close as you think it's going to get) when you start it up without being plugged in.
8. Now, let your battery discharge all the way down to 0 percent and let your phone turn off again.
9. Fully charge the battery one more time without interruption and you should have reset the Android system's battery percentage.
Remember that it is not recommended to perform this process all the time. Even when your battery is so dead your phone won't even turn on, your battery still has enough reserve charge to avoid system damage. But you don't want to poke the tiger with a stick. Perform this process once every three months at the most. If it is required more often than that you have bigger problems at hand.
Put plainly: fully discharging a battery is bad for it. Trying to overload a battery is also bad for it. The good news is that charging batteries automatically shut off when their safe limit is reached and there's always a little in reserve even if your phone won't start. But again: do this only when really necessary, because it does have a negative impact on battery life.
How to calibrate Android device battery with root access
Even though I'm not convinced that clearing the batterystats.bin file has any meaningful effect on how the Android system reports remaining battery charge, there are those who swear by this method.
So in the interests of fairness, we've included the process for you here (it is true that different manufacturers use the batterystats.bin file for different things). It's basically the same process as above but with the added step of a root-enabled app.
Method 2
1. Discharge your phone fully until it turns itself off.
2. Turn it on and let it turn off again.
3. Plug your phone into a charger and, without turning it on, let it charge until the on-screen or LED indicator says 100 percent.
4. Unplug your charger.
5. Turn your phone on. It's likely that the battery indicator won't say 100 percent, so plug the charger back in (leave your phone on) and continue charging until it says 100 percent on the screen as well.
6. Unplug your phone and restart it. If it doesn't say 100 percent, plug the charger back in until it says 100 percent on screen.
7. You want to repeat this cycle until it says 100 percent (or as close as you think it's going to get) when you start it up without being plugged in.
8. Now, install the Battery Calibration app and, before you launch it, make sure your battery is at 100 percent again, then restart.
9. Immediately launch the app and recalibrate your battery.
10. Once you've calibrated your battery, discharge it all the way down to 0 percent and let your phone turn off again.
11. Fully charge the battery one more time without interruption while it's switched off, and the Android system's battery percentage will be reset.
That's it. Have you tried any of these methods? Do you know an alternate way to fix battery problems? Let me know in the comments.
Source : AndroidPit
When you say "allow the battery to discharge", I.e. drain to zero, must leave my phone idle for a long as it takes to drain naturally, or can I run a battery-heavy app to speed the draining?
Also, what is the best charger to use for my phone, and how much would it cost to replace the battery?
Thank you
AndroidAssociated said:
When you say "allow the battery to discharge", I.e. drain to zero, must leave my phone idle for a long as it takes to drain naturally, or can I run a battery-heavy app to speed the draining?
Also, what is the best charger to use for my phone, and how much would it cost to replace the battery?
Thank you
Click to expand...
Click to collapse
You can use the phone any way you want, just don't charge it in between.
Charger and cost would be different for different devices, so ask someone who has your device.
anandmore said:
You can use the phone any way you want, just don't charge it in between.
Charger and cost would be different for different devices, so ask someone who has your device.
Click to expand...
Click to collapse
Thank you, it worked well.
Now I am having difficulty rooting my device. I made a thread and am hoping I receive a solution.
When you do the first step is with the phone turned off, then you do the plug and unplug until is 100% and you fully discharge the phone (until it's off). After that, the next charge must be with the phone on or off? (Just to be clear, I'm talking about step 9)
GermanGuellB said:
When you do the first step is with the phone turned off, then you do the plug and unplug until is 100% and you fully discharge the phone (until it's off). After that, the next charge must be with the phone on or off? (Just to be clear, I'm talking about step 9)
Click to expand...
Click to collapse
with phone on.
anandmore said:
with phone on.
Click to expand...
Click to collapse
And how long is the charging time, until it reaches 100% or an exact number of hours (i.e. 8 hours or something like that)? Again, talking about step nine
Thanks. Will try the same.
That second photo of S6 looks scarier for a phone with non-removable batteries. Is that the case with most of the phones with non-removable batteries?
anandmore said:
with phone on.
Click to expand...
Click to collapse
This is confusing to me... In the root steps (step 11), it specifically says to charge it with the phone *off*. So after using the device until it shuts off, should you recharge it to full while the device is on or off? Or is it different depending on whether your device is rooted or not?
The way I understand it - step 9 (which is what the poster was questioning) in the non-rooted steps is the same as step 11 in the rooted steps - and that is where I'm seeing conflicting information with the answer you gave that poster...
Can you please clarify?
Thank you.
Thanks a lot for this tricks, i will try it.
Letting your phone discharge to 0, can damage the battery!?
my phone shut down before 0%.i.e somewhere between 0to 5%.
its swicthed off directly without showing brand logo
akashnaik1996 said:
my phone shut down before 0%.i.e somewhere between 0to 5%.
its swicthed off directly without showing brand logo
Click to expand...
Click to collapse
So reboot the phone, then wait that it shutdown itself, then try to reboot it again.
Repeat it until you can't reboot the phone.
Sorry to dig up an old thread but ive tried the battery calibration thingy and my phone got stuck on 100% after every time i did this method of letting it die completely and leaving it off and charging overnight, when i turned it back on it stayed at 100% for an hour of heavy use. I had to do several restarts and cache wipes to get it fixed, but battery percentage still off by 5-6% when the phone is off vs when its on, it shows two entirely different percentages when plugged in and when turned on.
Didn't work Help
I tried doing the method but my phone doesn't start up again after it dies
I tried another method a month ago and still didnt work
In the first step you mention that we must allow the battery to fully discharge, now does that mean that we discharge it until the phone indicator shows 0 and shuts down or we keep turning the phone on until it does not turn on anymore. Because I think my battery still has substantial amount of charge even when the phone is showing it as 0.
Hi!
this guide is still valid? as we are today on 2018 and OREO era?
riccetto80 said:
Hi!
this guide is still valid? as we are today on 2018 and OREO era?
Click to expand...
Click to collapse
Yes. Totally.
@helblazer with Non-Root you said on 9 step charges battery again to 100% & you have battery reset, and on post #7 you answer we should charges phone while phone is On, how we charge phone while its on, since its already off on step 8,
8. Now, let your battery discharge all the way down to 0 percent and let your phone turn off again.
9. Fully charge the battery one more time without interruption and you should have reset the Android system's battery percentage.
you might want o answer this question again, after 8th step, phone batter is 0% & it auto off, we need to charge it with phone off or on? if on how it can on if battery is 0% & it auto off,
i am waiting for your reply since i am now on 8th step & need to do step 9,
Thanks.
Oneplus 9 t-mobile version LE2117. The phone will not seem to charge above 900mah and usually will only charge at around 700mah. I've tried multiple chargers and tested my 6t on the same chargers and it is charging at 3000+ on the same charger.
I think this started after transferring all the data from the 6t over to the 9 using Google one. I tried doing a cache wipe in recovery but that didn't help.
I'm rooted and unlocked. Battery charging optimization is off. Any ideas?
Degraded or failed battery; replace it.
blackhawk said:
Degraded or failed battery; replace it.
Click to expand...
Click to collapse
It either started right after I updated to 11.2.9.9 or after I did the restore. I think it's software related. I might do a factory reset if I don't find another solution.
HutchOven said:
It either started right after I updated to 11.2.9.9 or after I did the restore. I think it's software related. I might do a factory reset if I don't find another solution.
Click to expand...
Click to collapse
Batteries can fail overnight... just like that.
If it was at 80% of its original capacity it's degraded and should be replaced.
Any swelling (take a close look) is a failure.
If there's any doubt, replace it as batteries are cheap and it's not worth destroying a phone over.
Power off phone. If it's still exhibiting abnormal charging behavior it's likely hardware. It's possible it could be firmware if the power controller's instruction set was changed.
Otherwise the battery and possibly the power port pcb are the most likely suspects.
Make sure the battery charging start temperature is at least 72°F. A low start temperature will disable fast charging.
blackhawk said:
Batteries can fail overnight... just like that.
If it was at 80% of its original capacity it's degraded and should be replaced.
Any swelling (take a close look) is a failure.
If there's any doubt, replace it as batteries are cheap and it's not worth destroying a phone over.
Power off phone. If it's still exhibiting abnormal charging behavior it's likely hardware. It's possible it could be firmware if the power controller's instruction set was changed.
Otherwise the battery and possibly the power port pcb are the most likely suspects.
Make sure the battery charging start temperature is at least 72°F. A low start temperature will disable fast charging.
Click to expand...
Click to collapse
I did install acc but I've since removed it. Going to try a factory reset and if that doesn't solve it, you are likely correct. I just didn't want to wipe the phone and deal with getting root and all my apps back on it.
Also it has no swelling, start temp is around 90* and the health says good on ampere and the battery doesn't seem to drain fast. It just won't charge fast.
HutchOven said:
I did install acc but I've since removed it. Going to try a factory reset and if that doesn't solve it, you are likely correct. I just didn't want to wipe the phone and deal with getting root and all my apps back on it.
Also it has no swelling, start temp is around 90* and the health says good on ampere and the battery doesn't seem to drain fast. It just won't charge fast.
Click to expand...
Click to collapse
The only reliable parameter is SOT* which of course can vary if you change the set up.
Erratic fast charging or its failing to engage is another sign of a battery failure. Not to repeat but it's worth remembering...
As a battery degrades it's fast/regular charging time will decrease.
New maybe it took 30 seconds to add 1%
Degraded may be 20 seconds for 1%
Less capacity, less charging time.
Regardless if the device is heavily used expect a battery life of 1-2 years. Replacing these I now view as routine maintenance. My N10+'s will get new batteries about every year now. My first one failed shortly before the 1.5 year mark. I was fortunate it didn't damage the display.
*I track this with Accubattery. The history log is it's most useful feature, great for troubleshooting.
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blackhawk said:
The only reliable parameter is SOT* which of course can vary if you change the set up.
Erratic fast charging or its failing to engage is another sign of a battery failure. Not to repeat but it's worth remembering...
As a battery degrades it's fast/regular charging time will decrease.
New maybe it took 30 seconds to add 1%
Degraded may be 20 seconds for 1%
Less capacity, less charging time.
Regardless if the device is heavily used expect a battery life of 1-2 years. Replacing these I now view as routine maintenance. My N10+'s will get new batteries about every year now. My first one failed shortly before the 1.5 year mark. I was fortunate it didn't damage the display.
*I track this with Accubattery. The history log is it's most useful feature, great for troubleshooting.
View attachment 5544251
Click to expand...
Click to collapse
I did a factory reset and battery is still only showing 500-800mah charging. What's weird is the display on the lock screen states its charging rapidly though.
But unfortunately it looks as if you are correct and it was a coincidence that the battery failed some time while updating the phone.
HutchOven said:
I did a factory reset and battery is still only showing 500-800mah charging. What's weird is the display on the lock screen states its charging rapidly though.
But unfortunately it looks as if you are correct and it was a coincidence that the battery failed some time while updating the phone.
Click to expand...
Click to collapse
You can't measure the charge rate with the screen on. The power controller automatically ramps the charge rate down the moment the screen comes on. If you have Accubattery already open and turn the screen on it will display the screen off charge rate for a second until it refreshes.
If it says it's fast charging, it likely is. Verify by rate charged in 10 minutes between 30-70%.
It should be approximately 18-22% for a 4300 mAh battery on a 25w brick (Samsung), but you get the idea.
Regardless it's sound stewardship to replace degraded Li's before they fail, plus it breathes new life into the device.