I have a 3 year old galaxy s9+. In the most recent battery test I did on it, i got a solid 8-9 hour SOT on a video loop test.
Sometime after that, my battery started dying quickly at 30%. I searched online and battery calibration seemed to be the way to correct it. I did it and now my phone retains less than 67% of its actual charge. Meaning, it dies every 3-4 hours now. It charges insanely quickly too. Obviously the battery hasn't degraded by a while 20% since the video test since that was done only 2 months back. Please help!
The Android OS has a feature called Battery Stats, which keeps track of battery capacity, charge level, etc.pp. Most times the problem lies with how the Android OS reads and displays the current charge level of the battery, not the battery itself. The Android OS file that houses these informations may be corrupt or even missing.
Calibrating your "Android" battery simply means getting the Android OS to correct this collected information so it is reflective of your actual battery charge level once again. Your device's Android must be rooted to successfully calibrate the "Android" battery by means of of a "Battery Calibrator" app like this one:
Download Battery Calibration latest 3.3 Android APK
Battery Calibration Android latest 3.3 APK Download and Install. Battery Calibration is the #1 battery calibrating app in the Google Play Store.
apkpure.com
Take not that simply running a battery calibrator app isn't all what you have to do,
read complete XDA article here:
[GUIDE] How to Callibrate Battery On Your Device [ROOT/NON-ROOT]
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...
forum.xda-developers.com
TY for the detailed reply. I definitely don't regret asking on xda! I will follow these procedures and update on the progress. TY
EDIT: The battery calibrating app you had linked doesn't seem to be working. It doesn't go past the log in screen. I've gone through the calibrating wiki you linked. I'll try that.
Related
If i charge my phone to 100%, use it for about 2-3 hours i have ~ 60%.
But if i want to restart my phone for example when it has 60%, after the restart it shows 82% or smth like that. So my question is, why the battery information isnt the same after a restart ? Is something
Another wierd battery stuff : If i charge it to 100% when using it decreseases by 2% once.
100 , 98 , 96 , then it start showing the numbers properly without skipping them.
Example. Today my battery drained and turned off like always, so the battery stat should be "0%". But when i pluged it in and after powering my phone reads the battery is 28%
What should i do? I already wiped the battery stats.
The battery percentage indicator is always just an approximation. Basically your device just gets the voltage and tries to guess the percentage with some knowledge about the behavior of the battery drain.
It's totally normal that you get different results after a reboot. I experienced this with different devices, so it's nothing specific to the Sensation.
I don't know what exactly the wiping of the battery stats does, but I would guess that you then need a few charging/discharging cycles in order to get it working properly.
Furthermore you should try to keep your battery charged all the time. Never discharge it completely, as this is one of the worst things you can do (at least with Li-Ion and/or Li-Po batteries).
Just another question: Do you have the original battery? Maybe you have some cheap battery with some cheap controller, which behaviors as such .
Its the battery from the original phone box.
Can u also please tell me how to calibrate step by step, and if u can recomment me a Sense-rom-like TaskManager for the CM7?
As said above I've no idea what "wipe battery stats" exactly does. Normally the manuals say something like "please fully charge and discharge your battery for 4 to 5 times". But maybe the "wipe battery stats" option invokes something else.
Personally I don't use any Task Manager. The general conclusion seems to be that Android (especially with the amount of RAM the Sensation got) can handle this for itself quite well. Android got some decent algorithms in order to decide whether an application is still needed and will close it (while saving most of the states within the application). When you open it the next time, Android will try to restore the state and you usually don't even realize what happened in the background. Any task manager will interfere here and shorten the battery life. So under normal circumstances you shouldn't need a task manager.
You just need to get used to the idea that the operating system decides what is best for you (or at least best for your battery life) and try to abstract a little from the "open/close" mindset we are used from our desktops for decades.
That fixed a lot of broken links in my mind.
Thanks.
If you still want to calibrate your battery (e.g. by wiping battery stats after charging it correctly and all that), just follow the general directions in these threads:
http://forum.xda-developers.com/showthread.php?t=937080
http://forum.xda-developers.com/showthread.php?p=16808932
Just be aware of the fact that Current Widget seems to be wrong values for the sensation and that you need an app to find out what apps are causing battery drain (because that function is not available in Gingerbread anymore). Please refer to my post on another thread in order to work around these limitations:
http://forum.xda-developers.com/showpost.php?p=18193397&postcount=6
Good luck!
Just thought this was interesting and hadn't seen it posted elsewhere on the Sensation forum.
https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT
The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/ directory."
No, it does not.
This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.
That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away
Click to expand...
Click to collapse
I understand the logic behind it, I do, but I've noticed massive improvements at times when doing this, but only when battery is exceptionally bad for no reason. It's not just a pseudo effect, and it's not just draining and charging the battery. I'm talking consistantly getting a few hours per charge, 3 or 4 full cycles, then I wipe stats, and boom, 12 to 20 hours.
So, I'm just gonna keep doing it, it doesn't hurt either way.
Ofc it does not improve battery life. No one ever said that. Only thing it does is let charge your phone to 100% like you would on a official rom.
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Anyway I still erasing my battery stats ...
It was never suppose to improve your battery life, but give you more accurate reporting of how much battery life is left.
bobdelt said:
It was never suppose to improve your battery life, but give you more accurate reporting of how much battery life is left.
Click to expand...
Click to collapse
im agreed with you... it doesnt improve the battery, but give more exact battery porcentage
Hello to all. This had been something I noticed for a while, but only took into consideration when I found out the tab 2 7.0 's battery capacity. For a while I've been getting on average 3 1/2 hours battery life. For a tablet with a 4000mAh battery, this concerns me. So is this battery life expected or may there be something underlying?
Any help appreciated.
Depending on the age of the tablet the battery could be exhausted and need replacing, or you may have apps chewing up your battery life.
Install CPU spy from the Play store and monitor over a 24hr period, you may have a better idea of what's going on.
Pp.
OK thanks so much. Appreciate the reply
Flash AA kernel by android andi
Battery life might decrease for a various reasons. How frequent do you charge?
If you never had a moment where you didn't charge it for days, then the battery might be fine and problem lies with some code. It might be a calibration problem due to a bad recovery version. With less dev support, the bug may have gone unnoticed in the recovery.
Try this: Fully discharge your battery, even after it shows 0%, restart continuously till the tab doesn't start(not even recovery). Keep it like that for an hour. Then attach charger and charge till 100%. Again keep it aside for an hour after full charge, with charger disconnected. Then turn it on and check.
The FG chip does 2 measurements at 0 and 100% after an hour idle and recalibrates. A shortcut is go to a repair shop and open the back cover and disconnect the battery for 20mins and then recalibration will take place instantly. Don't trust the calibration apps in playstore, they're meaningless.
If it still doesn't work battery,kernel is to blame.
It is because of the kernel. The kernel of CM is not good at saving power but the performance is not bad at all.
However, I found that the AA kernel by android andi or Dhollmen kernel version 3.0.101 (http://forum.xda-developers.com/showthread.php?t=2176563),
these two are both really good at power saving and powerful.
For me, I would prefer Dhollmen one because the installation is sample, it just flash the file at the recovery mode.
Hope these information could help.
I have Cosmo Communicator phone on Android 9 and some time ago the battery started to report -1% charge. I bought a new battery but that did not help. Otherwise everything works, the phone is charged, it charges and discharges and when the real capacity of the battery goes to zero, it abruptly halts.
I think it is some sort of hardware failure but it is out of warranty, and repairing it costs as much as a new one.
The bad thing from usability perspective is that Google Play refuses to install/upgrade applications and cannot root the phone (it refused thinking the battery was too low, at least I think that is what happened). Is there any software way to trick the phone into thinking the battery is not -1 %? Or any other suggestion? A way to root the phone (which is officially supported) that would bypass the battery check?
supsupsup said:
I have Cosmo Communicator phone on Android 9 and some time ago the battery started to report -1% charge. I bought a new battery but that did not help. Otherwise everything works, the phone is charged, it charges and discharges and when the real capacity of the battery goes to zero, it abruptly halts.
Click to expand...
Click to collapse
If you're convinced that the battery itself is not the problem, you can run a Battery Calibrator app.
FYI: The Android OS 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, Calibrating Android's battery simply means getting the Android OS to correct this information so it is reflective of your actual battery levels once again.
jwoegerbauer said:
If you're convinced that the battery itself is not the problem, you can run a Battery Calibrator app.
FYI: The Android OS 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, Calibrating Android's battery simply means getting the Android OS to correct this information so it is reflective of your actual battery levels once again.
Click to expand...
Click to collapse
Yeah, the battery is brand new. But I think it is still hardware based - maybe some motherboard failure or something like that. Resetting to factory settings or using the app you suggested did not help anything.
The phone can go on for a day while saying the charge is -1 %. Could I somehow just convince it it does not even have battery or something like that? Because it wrongly thinks the battery is about to die, it prevents me from changing to software in any way :-(. (I have to sideload the apps from APKs, for example).
Hello,
I followed the excellent guide linked below for help with calibration of a Samsung battery.
[GUIDE] Samsung Battery Calibration
Samsung Phone Battery Calibration Guide Description: This guide is for those who are experiencing battery issues (e.g., battery suddenly dying at percentages >1% or battery draining too fast or messed up battery readings after custom ROM...
forum.xda-developers.com
Unfortunately, it did not solve my problem. I was hoping someone here might be able to help.
My battery calibration issue is different to anything I've seen before. I had the usual battery problems and got a replacement battery fitted. My current problem is that the battery has more charge than the phone realises (which is the opposite of the usual problem one tends to see with a bad battery).
The battery level falls quickly from 100% down to 1% at a rate of about 10% per hour. But then it stays at 1% for AGES! Even if I leave a video running on YouTube on maximum brightness. A minimum of 30 minutes but possibly more. So there's plenty of milliamps in there, it's just that the phone doesn't realise this.
I tried following methods 1 and 3 from the guide linked to above but the problem is still there.
Any suggestions? Thanks in advance.
Thanks for your reply. I've tried this but unfortunately this hasn't fixed the issue. Any other suggestions?
Has the battery ever been replaced? This kind of behavior can happen with a failing battery.
FYI: If phone's battery health shows less than 80% then battery should get replaced.
xXx yYy said:
Has the battery ever been replaced? This kind of behavior can happen with a failing battery.
FYI: If phone's battery health shows less than 80% then battery should get replaced.
Click to expand...
Click to collapse
Yes the battery has been replaced recently. Within the last 6 months.
Where do I see the battery health from? It's a Galaxy S7.