I have an i9505 running resurrection remix 5.5.6 with alucard kernel. all was going ok-ish until I used the battery calibration app to delete the batterystats.bin file. since then the battery will only charge up until the high forties or low fifties in percentage terms. the battery was fully charged when I calibrated it, it's really getting on my nerves now.
could it be a kernel thing ? I have fast charge enabled in alucard...
any help would be appreciated !!!
1. Do not use battery calibrating apps. They are useless. They are for old phones and are useless now.
2. Deleting batterystats is useless. Do not do this anymore. Android can take care of it.
3. You can try a diffent ROM/kernel. Maybe that wil fix it.
For the future let Android handle you battery. It's perfectly capable of doing that.
Even on older phones battery calibration apps were useless, because Android always deleted the batterystats.bin file when the battery was charged to 100%.
OP, contact Anker and see if they have an app to reset the battery percentage. Some companies, like Mugen Batteries, offered such an app because the device itself couldn't recognize when the battery was at 100%.
I manged to get it fully charged today and I'm wondering if it's related to alucard kernel as this only seemed to happen when I was running the first two cores at different values from the last two.
be interested to hear if anyone else gets the same thing if they recreate settings like that...
still, I'll look into that anker app angle. I also have a zero lemon battery that doesn't seem to give it's proper capacity. personally I think Samsung Androids are quite poor with batteries in general, like your percentage going up after you've put the phone down and stopped using it, or the last 2 % lasting longer than the previous 20 (on extended batteries at least)...
Related
I followed directions on what I thought to be a battery fix, but it ended up making my battery life twice as bad. Actually it takes longer to charge now than it does to drain.
Anyone else have this happen?
Sent from my ADR6300 using XDA App
I did the same thing, but I've only charged once and I didn't time it. I haven't been timing any of my charges or discharges, but maybe give it some more time, that's kind of how stats work isn't it....usage over time? Good luck.
Today I started at 100% (not a powered off full charge though). After 2 hours of moderate use I was down to 50%. I have been charging for an hour via car charger and currently at 67%.
Sent from my ADR6300 using XDA App
Not to be a dink, but then it would appear that you didn't follow the instructions. As a result, YMMV I guess.
1. You will need to charge the phone to 100% (while the phone is off).
2. Leave charging cable plugged in.
3. Boot into recovery and wipe the battery stats (should be under Advanced).
4. Then boot into Android.
5. Then remove the charging cable.
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Click to collapse
Give it another shot, and I would suggest that maybe it not be thought of as a "fix". Try using the wall charger as well. I only use the wall charger as I have a converter in my vehicles. Let us know how it goes!
Wynnded said:
Not to be a dink, but then it would appear that you didn't follow the instructions. As a result, YMMV I guess.
Give it another shot, and I would suggest that maybe it not be thought of as a "fix". Try using the wall charger as well. I only use the wall charger as I have a converter in my vehicles. Let us know how it goes!
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Those are actually the directions that I followed yesterday afternoon. I didn't notice the battery life being any different after doing that initially. At the end of the day I charged my phone via wall charger for roughly 8 hours while I slept.
I was unplugged for less than two hours and watched it drop down 50%. Wifi was off, Gps also off. I was doing some web browsing and also using the xda app. I played a game for a couple of minutes.. That was it. I really should've checked the battery usage but I didn't think of it in time.
I only charged it in the car today out of necessity because of the super quick discharge. When I'm at home I only charge with the wall charger.
Sent from my ADR6300 using XDA App
I'd venture a guess that you have something else running the background. I honestly wish that I had something more for you, but I'm going to have to fold.
Wynnded said:
I'd venture a guess that you have something else running the background. I honestly wish that I had something more for you, but I'm going to have to fold.
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Click to collapse
I've heard others say they found facebook or twitter running in the background and that when they killed that it made a big difference in battery life. Perhaps that?
WiFi set to never turn off
I noticed this morning that WiFi had been set to never sleep, I just changed that t 15 min.
Had a full 100% charge last night did not leave on the charger, minimal use this morning down to 78%.
Let's see how the new WiFi settings works.
oldman_58 said:
I noticed this morning that WiFi had been set to never sleep, I just changed that t 15 min.
Had a full 100% charge last night did not leave on the charger, minimal use this morning down to 78%.
Let's see how the new WiFi settings works.
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Click to collapse
that doesn't do anything unless you leave wifi on all the time, and if you do then that would be one solution to this problem.
htc_woe_is_me said:
Those are actually the directions that I followed yesterday afternoon. I didn't notice the battery life being any different after doing that initially. At the end of the day I charged my phone via wall charger for roughly 8 hours while I slept.
I was unplugged for less than two hours and watched it drop down 50%. Wifi was off, Gps also off. I was doing some web browsing and also using the xda app. I played a game for a couple of minutes.. That was it. I really should've checked the battery usage but I didn't think of it in time.
I only charged it in the car today out of necessity because of the super quick discharge. When I'm at home I only charge with the wall charger.
Sent from my ADR6300 using XDA App
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Click to collapse
I experienced the exact same issue after doing the battery thing yesterday. Tried several different kernals since then - no change: I could just about watch the battery go down. This morning I wiped and loaded SR Sense 2.5.2 and the updated stock kernal from ROM manager. We'll see how it goes...
rfarrah said:
I experienced the exact same issue after doing the battery thing yesterday. Tried several different kernals since then - no change: I could just about watch the battery go down. This morning I wiped and loaded SR Sense 2.5.2 and the updated stock kernal from ROM manager. We'll see how it goes...
Click to expand...
Click to collapse
I did this and just installed 2.5.2. I then installed the Hydra kernel and wiped battery stats when I was at 100% and the unit was off/green light. The battery has gone to crap too. Any ideas?
thats weird, i did wipe battery stats (correctly) at 11 last night. i woke up at 9:30 (lol) with 93% battery left. the phone was sleeping the whole time, but i had sync turned on and had recieved several facebook updates, txts, and emails. now im losing around 10%battery every two hours or so, and i am using the phone to send txts and emails every three to five minutes. so battery life is actually much better. after the cable is unplugged, is it necessary to let the battery die fully, then charge, or can i charge it now? (its at around 30%)
so basically, i was wondering if it is necessary to run your battery fully down after doing a wipe battery stats
I don't know what to tell you guys. Since wiping stats, my phone has been up for 36 consecutive hours with an awake time of 2:40 and the battery is at 30%.
For reference I guess....
SLOflatlander said:
so basically, i was wondering if it is necessary to run your battery fully down after doing a wipe battery stats
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Great question. Anyone have any knowledge on this? I didn't let mine discharge all the way.
I do have some kind of update. I had to do a factory wipe today and since I did that my battery life has been much better.
Sent from my rooted Incredible using XDA App
Has anyone else done this that can report there results?
I was about to do this but now I am skeered.
It's completely impossible for wiping your battery stats to make your battery life worse. It's a common misconception that by wiping your battery stats you somehow condition your battery. It's actually quite the opposite, because you're actually conditioning Android by wiping your stats. No matter what your battery percentage or meter says, your battery is still capable of holding a certain amount of electrical charge and your phone will not die until it's fully discharged. On the other hand it *might* make your percentage or battery meter read wrong if you either:
a. wiped your battery stats without a full bump charge (e.g. wiping your stats at 60% charge *might* make your phone think 60%=100% and as a result, you'd see huge decreases. but, you would most likely sit there with a phone showing a 1% charge for hours after it got there.)
b: didn't allow your phone to discharge fully after wiping your stats (same problem as example a, but the inverse of it)
All wiping your battery stats does is delete the file "batterystats.bin" from your /data/system folder. This file is recreated when you boot your phone after wiping them. It keeps the data on what's using your battery for when you click "battery use" in the settings menu. It's also thought to hold the stats that tell you phone what a full charge and no charge feels like and that if you fully bump charge your phone, wipe that battery stats, and then full discharge your phone (without interrupting it by switching ROMs or doing updates) that you will have a more accurate battery meter. It won't eliminate the need to bump charge your phone or make your battery life better. It will just be perceived as better since you won't get 20% drops in your reading in 30 minutes due to a badly calibrated batterystats.bin file. Also, you'll feel better because instead of looking at a 50% reading, you'll be looking at 60%.
Your battery still has the same capacity, charges to the same level, and discharges in the same amount of time. The only thing that can change those things are usage levels.
so should i redo my wipe battery stats then? when i originally did it, i ran it down to around 40%, then rebooted, then i plugged it in around 15%. would this mess it up then?
vantagejuan said:
It's completely impossible for wiping your battery stats to make your battery life worse. It's a common misconception that by wiping your battery stats you somehow condition your battery. It's actually quite the opposite, because you're actually conditioning Android by wiping your stats. No matter what your battery percentage or meter says, your battery is still capable of holding a certain amount of electrical charge and your phone will not die until it's fully discharged. On the other hand it *might* make your percentage or battery meter read wrong if you either:
a. wiped your battery stats without a full bump charge (e.g. wiping your stats at 60% charge *might* make your phone think 60%=100% and as a result, you'd see huge decreases. but, you would most likely sit there with a phone showing a 1% charge for hours after it got there.)
b: didn't allow your phone to discharge fully after wiping your stats (same problem as example a, but the inverse of it)
All wiping your battery stats does is delete the file "batterystats.bin" from your /data/system folder. This file is recreated when you boot your phone after wiping them. It keeps the data on what's using your battery for when you click "battery use" in the settings menu. It's also thought to hold the stats that tell you phone what a full charge and no charge feels like and that if you fully bump charge your phone, wipe that battery stats, and then full discharge your phone (without interrupting it by switching ROMs or doing updates) that you will have a more accurate battery meter. It won't eliminate the need to bump charge your phone or make your battery life better. It will just be perceived as better since you won't get 20% drops in your reading in 30 minutes due to a badly calibrated batterystats.bin file. Also, you'll feel better because instead of looking at a 50% reading, you'll be looking at 60%.
Your battery still has the same capacity, charges to the same level, and discharges in the same amount of time. The only thing that can change those things are usage levels.
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Click to collapse
Do you know how we can see what's inside the actual batterystats.bin file? I tried in root explorer and cannot open in no matter how I try.
i dont care what vantagejuan says, when i tried this process...and did it correctly, my battery was down to 85% within an hour..i know this because i unplugged it when i woke up for work, and i when i clocked in, it was at 85%
it was never this bad, i tried locating the file again from an old backup, but it didnt help...im hoping that like someone else said, a couple cycles through it will get better
im using the skyraider 2.5.2 vanilla with the hydra oc/uv kernal
i had this setup before AND after trying the battery fix and im using the seidio 1750...
frustrations are back from when i first got the phone
Hello all, I would like to know what % to start charging my phone is better to the battery? it's draining so much and there is no extra battery for sell in my country yet.
I did search many posts and all answers are different. I am so serious only this and I hope I can have a better way to keep my battery longer... thanks for your attention.
it's usually not good to let the battery totally discharge. So charge it before it completely dies.
oh really... but I already made my Note battery to 0% and shut off itself two times I also did charge on 40-50% to 100% bcoz I know I would have to stay outside without battery charge after. I wish I can get an extra battery in my country soon.
Your problem is probably not related to the battery but to some apparently draining all the juice. There is an app called something like betterbatterystats, not sure on the spelling though, it might help you to find those draining apps. It's been reported manytimes here in XDA.
And for your information it's better to charge when the battery dies for the first couples of times. I don't think that it makes a big difference after that.
Sent from my GT-I9000 using xda premium
U may also want to check the process or apps running on the background?
I freezes all the unwanted apps or process les one by one to try it. But in terms of the batt usage, I believe if u don't use it much often u can still stand by for at least a day. Mine running on full 3G, but screen brightness set to lowest and STILL facing some batt drain issue.
Sent from my GT-N7000 using XDA App
Charging from a total 0 is actually good and most technical people will suggest the same. In fact a full battery drain every month and then a full charge ensures your battery gets a full charge and a complete battery rotation. This is a good thing that you did and let no one tell you otherwise.
However, for normal usage the lower the better at which point you charge is best.
All of these batteries comes with xx full cycle charges - meaning how many times they will last from 0 to 100% before they degrade and start giving less efficiency (around 85% on future charges) after the full cycle charges are over.
You may want to use 10% as a good benchmark to ensure you dont lose an important call with your phone off. The battery saving mode on the Note will also help you reduce loads at times and improve battery life (at cost of system power).
Congratulations on using the Galaxy Note, which I feel is the best all in one device in the market!
rdosti said:
Charging from a total 0 is actually good and most technical people will suggest the same. In fact a full battery drain every month and then a full charge ensures your battery gets a full charge and a complete battery rotation. This is a good thing that you did and let no one tell you otherwise.
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+1
I second this.. its funny how still people still believe those myths about batteries (like charge 100% before you use the device first time).. those issues are easy 5-10 years old.. batteries now a days a have smart chips built into them that can control the battery health
So, I can charge my battery anytime when needed?
Also, for screen brightness, i set auto brightness is better than setting it manually low?
Sent from my GT-N7000 using XDA App
I know there was a recent Google announcement regarding battery status wipe, however, I found the results otherwise.
Seems that many individual now trusted official Google's spokes person, I would like you take you back on our side regarding the battery reading issue.
Another reason for this post is to make sure all the ROM flashers out there understand that it is probably not the ROM's fault but the battery meter is off. On top of the above, due to the fact that recent comments to all the ROMs has been "battery for this ROM is horrible" or "This ROM has awesome battery life!" before they have fully tested the entire battery cycle.
What Google is pointing out is not necessary "wrong" but it is misleading. They are implying that users are considering the Li-ion batteries to have "memory" effect like NiMH, yes, some users may still believed so. However! To fully "wipe" the battery level, you must understand that the Li-ion crystals inside the battery does not have memory effect, it does have a "meter" that reports the battery status. This meter is used to make sure all the cells in the battery is equally consumed properly, but during a ROM install, CWM restore, these values gets confused from time to time somehow in the software level.
Now, you must think that I have no facts to say Android OS is responsible for controlling that meter's data, but my experiences has proved to be convincing.
A simple example for the case to be more clearly explained is something what I have experienced before. After new ROM installs or CWM restores, I have the following experiences regarding the battery percentage reading.
Case 1: Battery lasts almost another hour with screen on with ONLY 1% left.
Case 2: Phone turns off without reaching 0%, sometimes as high as 8% my phone turns off.
The above 2 cases happens usually when the new ROM is installed and usually would have a battery reading far off from right before the ROM install or restore. They usually result in battery not being able to be appeared fully charged or in some cases in CM9 that the percentage goes above 100%
I hope the above has convinced you that "battery wipe" is necessary from time to time or cases to cases, also note that pulling the battery when the phone freezes sometimes would case the same issue.
If you are convinced, you may use the following steps to "wipe battery status" or "calibrate" is more precised term here:
Run the phone until it turns off and cannot be turn on
Plug it into a wall charger and ONLY wall chargers (because computer USB ports will boot Atrix)
Wait until the big battery charging animation reaches 100%
Boot into recovery and wipe battery status
Reboot the phone
You should now have a "calibrated" battery meter at a hardware level where Android OS was not interfering with the meter AT ALL . You might be able to charge to 99% at most of the time, but that is fairly calibrated, can check if the voltage is at 4203mV to be sure.
My battery when on cm7 won't charge past 4196 but if I flash miui it hits 4204,it's weird.
One thing I do to is before and during flashes I make sure I'm at 100% and still plugged in on the wall charger. This helps alot.
Sent from my MB860 using xda premium
morrislee said:
I know there was a recent Google announcement regarding battery status wipe, however, I found the results otherwise.
What Google is pointing out is not necessary "wrong" but it is misleading.
Click to expand...
Click to collapse
Not trying to pick a fight, but I just wanted to point out that what they say regarding battery stats isn't misleading. Batterystats.bin and "battery status" are not related. The battery stats that everyone wipes in CWM are exactly what the Android Engineer said they are, usage statistics for battery consumption by apps. (which always get wiped any time you reach a full charge) Batterystats.bin has no effect on what battery life is being shown.
morrislee said:
Now, you must think that I have no facts to say Android OS is responsible for controlling that meter's data, but my experiences has proved to be convincing.
A simple example for the case to be more clearly explained is something what I have experienced before. After new ROM installs or CWM restores, I have the following experiences regarding the battery percentage reading.
Case 1: Battery lasts almost another hour with screen on with ONLY 1% left.
Case 2: Phone turns off without reaching 0%, sometimes as high as 8% my phone turns off.
The above 2 cases happens usually when the new ROM is installed and usually would have a battery reading far off from right before the ROM install or restore. They usually result in battery not being able to be appeared fully charged or in some cases in CM9 that the percentage goes above 100%
Click to expand...
Click to collapse
The battery reporting over 100% in CM9 was a kernel issue (checkout this commit). If you browse through the entire file for that commit, you will see the battery % reading is also handled there (search for battery_state), and you will see it's tied to the battery reaching 4200mV.
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Other than that, thanks for trying to clarify the "horrible battery" problem people always seem to think they have. Yesterday I saw someone asking about battery life 20 minutes after Notorious updated Neutrino, lol.
ghost_og said:
Not trying to pick a fight, but I just wanted to point out that what they say regarding battery stats isn't misleading. Batterystats.bin and "battery status" are not related. The battery stats that everyone wipes in CWM are exactly what the Android Engineer said they are, usage statistics for battery consumption by apps. (which always get wiped any time you reach a full charge) Batterystats.bin has no effect on what battery life is being shown.
The battery reporting over 100% in CM9 was a kernel issue (checkout this commit). If you browse through the entire file for that commit, you will see the battery % is also handled there (search for battery_state), and you will see it's tied to the battery reaching 4200mV.
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Other than that, thanks for trying to clarify the "horrible battery" problem people always seem to think they have. Yesterday I saw someone asking about battery life 20 minutes after Notorious updated Neutrino, lol.
Click to expand...
Click to collapse
haha yeah, i say that comment lol. I said it was misleading for that fact you stated above, but my point was to tell how people can fully recalibrate the battery first before considering roms have bad battery usage. Because people now thinks that android os has nothing to do with the bad battery.
Interesting for the ICS battery issue... i was able to get it to 99% and 100% when i do the above cycle though, no more > 100%. but it is good to see it has been worked on
ghost_og said:
Not trying to pick a fight, but I just wanted to point out that what they say regarding battery stats isn't misleading. Batterystats.bin and "battery status" are not related. The battery stats that everyone wipes in CWM are exactly what the Android Engineer said they are, usage statistics for battery consumption by apps. (which always get wiped any time you reach a full charge) Batterystats.bin has no effect on what battery life is being shown.
The battery reporting over 100% in CM9 was a kernel issue (checkout this commit). If you browse through the entire file for that commit, you will see the battery % reading is also handled there (search for battery_state), and you will see it's tied to the battery reaching 4200mV.
-----------------------------------------------------------------------------
Other than that, thanks for trying to clarify the "horrible battery" problem people always seem to think they have. Yesterday I saw someone asking about battery life 20 minutes after Notorious updated Neutrino, lol.
Click to expand...
Click to collapse
i try he method from the first post , and i feel mybattery is lasting longer than before i just let it die at 7:53 am from today , connect the wall charger, let charge full, because i don´t have CWM recovery , i used battery calibrator from the market to recalibrate my battery
at 8:32 pm from today with a lot of whats app facebook some games and call etc im on 70 %
thanks for the TIP !!!
So i recently flashed CleanDFT ROM, first couple of days the meter read out 1 day and 18 hours which im very surprised then it went down to 1 day and 4 hours, now this morning i unplugged and it tells me i got 19 hours left from full charge, should i go by this? or is there something wrong?
hello can you help me wid flashing...i came from android...no idea of how to do it...
cyril008 said:
hello can you help me wid flashing...i came from android...no idea of how to do it...
Click to expand...
Click to collapse
Redirecting you to the right place.
If you have just flashed a new rom, in general, you need to go through a couple of battery cycles before the battery read can be accurate. I remember when flashing my ATT FUze I had to wait 2-3 complete charging cycles ie. discharging battery to 10% and charging back to full before I could get accurate reading. If you are experiencing worse battery time than before flashing after 2-3 cycles you might need to reflash the rom; you should see better battery time with custom roms, so I have heard.
I also wouldn't go by the battery saver timing, I would go by wpbench or real time use to get an accurate reading on battery time. I have a 1800 mah battery in my focus and it reads 24 hours on battery life
As far as i know, doesnt all the ROMs have basically the same battery life?
Ill be going out of town sometime this week and ill be out most of the day, i need a rom thatll at least last a whole 12 to 14 hours at the most or whole day at best of just occasional twittering and occasional checks on facebook and probably capture some pictures and a video and maybe an hour at most on music? im sure this phone can handle it but idk what you guys suggest
I have the same issue with ATT samsung focus with Roger latest updates, the battery meter is just not accurate, sometimes full and just reboot upon eject from the micro usb. The battery was fine until recently. Found a few other with the same issue online, no solution available yet.
*pulling out battery doesn't work*
The solution is exactly the same as it is on a laptop.
Lithium ion batteries, and, actually, come to think of it, pretty all rechargeable batteries lose capacity over time. The phone, to begin with, doesn't have a good idea of how much capacity is left, and it has to estimate based on previous performance. This is partially a result of battery manufacturers going as cheap as possible with the circuitry in lithium ion batteries.
The phone needs to figure out how old your battery is. This data is definitely lost with a new rom. Leave it to charge overnight, then unplug it and let the battery run all the way to dead. Charge it again, and your battery percentages should be correct. It may take more than one cycle, but the meter should settle into a correct estimate eventually.
Incorrect battery stats are a possible reason for fluctuations in battery life and reseting them as described in the previous post can help.
Another thing which you can do is use an app like this http://forum.xda-developers.com/showthread.php?t=1328730 to check the reported mV rating of your battery at full charge. That can serve as an indicator of the battery life you can expect with your current battery stats.
Hello! I'm having serious problems with my battery. Since I installed CM10 my battery just goes from 80 to about 60 or 50%, then it drops again from 40 to 20%. Already tried to calibrate with battery calibration app, or this methods, done full wipe (did the process from the beggining, back to Cm7 and no results at all!
Pictures attached.
Please, pleaase help! I'm selling my defy, and do not want to sell it with this issue.
PS: Original battery
Screenshot 1
Screenshot 2
All you need to know: http://forum.xda-developers.com/showthread.php?t=1778492
After checking the ownership in root explorer or simular apps, recharge to 100% and let it sit for a couple of hours. Do that again after discharging it.
You will probably be selling a worn battery anyhow, but then maybe with a calibration so the percentages work. This is mostly due to changing with a fast-charger (not the stock one) or charging it not often enough. If you have the habit to let it go to 0%, then it is worn in less then a year to a degree that it last for a couple of hours less then in the beginning.
New battery is the only way, I got an anker one off amazon for £5 and have great battery life on cm10. The
above method or a change of ROM may help but the only real cure for me was a new battery
Sent from Iron man's Jellybean powered suit