Database Users

"recondition batttery" FAIL

I tried the"recondition battery" I let my phone die wiped battery stats let phone charge fully and now my phone dies even faster than before.. Wth I should just stook with what I was getting smh.
Sent from my SGH-T959 using XDA App

Battery life is really relative, you can't control everything you do on a daily basis on your phone. You can't control the number of email, text message you received, etc. or the signal reception.
So, perhaps the battery now die faster because you change the way you used your phone? It's a possibility.

It's you.
I say that because you don't follow instructions.
Step 1 is to CHARGE FULLY FIRST. Where did you see that it says let it die and wipe?
Reading is fundamental.
Sent from my SGH-T959 using XDA App

I use my phone the same and on bionix 1.8 thread someone posting two ways to do it one was chargefully and wipe and they other was let die then wipe..
Should I charge fully then wipe now to see if that will fix?
Sent from my SGH-T959 using XDA App

Bionix says to charge fully then wipe..
I doubt it's possible that reconditioning would worsen your battery life. It could be a bad app or a setting that needs to be changed. For example, the Facebook app is defaulted to refresh itself every hour.
Aside from reconditioning (which really is just to kind of calibrate your battery status with the rom) it's best to check your running apps. If you leave GPS on, some apps run it in the background etc etc.
I think people spend too much time tracking their battery life that they ultimately cause it to worsen. No need to wake the screen every 5 mins to track battery etc. I get EXCELLENT standby time using bionix mainly bc I don't take out my phone unless I need it to use, vs tracking battery.
Sent from my SGH-T959 using XDA App

Yeah that's the thing when I first flashed bionix1.7 my battery would last forever buy now even on standby without checking my phone it will die.. It didn't do that before the failed attempt at battery recondition which I should not have done in the first place hopefully it will get better
Sent from my SGH-T959 using XDA App

Anyway to fix this? Should i fully charge then wipe?
Sent from my SGH-T959 using XDA App

There's no guarantee that your battery will be fixed once you do it correctly. You could just have a defective battery. My first Vibrant was defective that could not get any reception and on top of that my battery would drain real fast.

Rodriguez92 said:
Anyway to fix this? Should i fully charge then wipe?
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
Your question has been answered twice already:
disturkis4u said:
Step 1 is to CHARGE FULLY FIRST.
Click to expand...
Click to collapse
disturkis4u said:
Bionix says to charge fully then wipe..
Click to expand...
Click to collapse
Do I really need to say it again? Charge fully, then wipe!

Actually, You are supposed to let it charge fully > let it die > plug it in & let it charge (While off) > wipe batt stats > boot > done

I also read a post where it said letting the battery die completely is bad for "health" I guess I'll just not mess with it at all lol
Sent from my SGH-T959 using XDA App

Master™ said:
Actually, You are supposed to let it charge fully > let it die > plug it in & let it charge (While off) > wipe batt stats > boot > done
Click to expand...
Click to collapse
Er, if you wipe the stats, won't it "forget" the draining and charging you did first, making them pointless?

i reconditioned my battery when i flashed bionix 1.8 and haven't noticed any difference in battery life.

beren28 said:
Er, if you wipe the stats, won't it "forget" the draining and charging you did first, making them pointless?
Click to expand...
Click to collapse
Simple answer, no! You will wipe all battery stats previously stored. Starting with a fresh charge and no batt data the fone will have to re-learn the battery data and this should give you a more accurate representation ( cuz thats all it really is ) of battery state from that point on. Hope this helps.

jdkackley said:
Simple answer, no! You will wipe all battery stats previously stored. Starting with a fresh charge and no batt data the fone will have to re-learn the battery data and this should give you a more accurate representation ( cuz thats all it really is ) of battery state from that point on. Hope this helps.
Click to expand...
Click to collapse
No, his point is that you have extraneous steps. Wiping stats AFTER a charge--drain--recharge is pointless. All you have to do is charge to full with the phone off, wipe stats, reboot.

Rodriguez92 said:
I also read a post where it said letting the battery die completely is bad for "health" I guess I'll just not mess with it at all lol
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
Yeah, in theory you can reduce the life of the battery. But batteries are cheap, and I doubt I'll ever have this phone long enough to see my batteries go bad.

Ima just leave my phone alone the roms are good enough
Sent from my SGH-T959 using XDA App

Exactly. Why charge it, drain it, then delete? The stars start over. The draining and charging are forgotten.
Sure, you wasn't to start fully charged, but draining it first seems pointless.
Sent from my SGH-T959 using XDA App

Straight from Cyanogens Wiki-
http://wiki.cyanogenmod.com/index.php?title=Troubleshooting
"Battery recalibration
If you're experiencing higher than normal battery drain, try the following:
Charge the phone to full battery; let it keep charging until the battery says it is fully charged. Do not just wait until the light is green, it isn't always fully charged, causing a lot of inaccuracies. (You can check by going to: Settings -> About Phone -> Status -> Battery Level = Full.)
Boot to recovery mode and go to console (or adb shell) and type:
mount -a
rm /data/system/batterystats.bin
NOTE: Newer Amon_Ra and ClockworkMod recoveries have an option to delete the battery stats, do this in place of the console commands above.
NOTE: To have the most accurate of battery stats, reboot the phone immediately after wiping the battery stats and wait for CM to boot completely to the desktop. Once your entire boot is done and you have full access to the phone, go ahead and pull the charger and continue with this troubleshooter.
Do not charge the phone until after draining the battery completely, resulting in it automatically shutting off.
Recharge the phone completely and then use as you normally would."

jdkackley said:
Starting with a fresh charge and no batt data the fone will have to re-learn the battery data and this should give you a more accurate representation ( cuz thats all it really is ) of battery state from that point on.
Click to expand...
Click to collapse
I've wondered this -- what does the conditioning actually "fix"? (I understand it doesn't affect the way the battery physically charges & drains.) Is the problem (pre-reconditioning) that the phone is thinking/saying it's fully charged when it's not, and so you're not starting off with the 100% charge you thought you were? Or is the problem that the phone thinks (and represents) that the battery is discharging faster than it really is, as you use it? Or something else?
Also, I've read others on here talk of allowing the battery to completely discharge, and then charging to 100%, ~1x per month -- without any talk of "wiping stats." Is that supposed to be something different altogether? Thx

Battery life

I was on the dl30 and my battery life was great...since switching to the eb01 my battery drains much faster doing the same things. Any ideas on what to do?
Sent from my SCH-I500 using XDA App

Shakes The AssClown said:
I was on the dl30 and my battery life was great...since switching to the eb01 my battery drains much faster doing the same things. Any ideas on what to do?
Sent from my SCH-I500 using XDA App
Click to expand...
Click to collapse
Did you follow the simple procedures of:
Flashing on a full charge and battery reset process?

sorry I am actually having a similar problem as Clown.
Flashing on a full charge and battery reset process?
Jenisiz - when u mention flashing on a full charge and battery reset process? where can I find the battery reset process? tried looking around after your post and can't seem to find anything about how to reset the battery.
Im very noobish at all this so if u could send me a link or steps on how to reset battery that would be GREAT

http://forum.xda-developers.com/showthread.php?t=939425

Yes I have done the CWR wiping and such. I am doing the same things I did before on DL30 but now battery isn't even lasting a day....in fact sometimes I have to put it on the charger now after only 8 hours. Mind you...I am not really doing anything that intensive. Maybe a few calls, some texting...some browsing and that's it. On DL30 I could easily go all day and still have 3/4 charge...now it's draining horribly even after wiping the stats.

Go into CWR and select the advanced option and then wipe battery stats. That could help. Also, letting your battery completely drain and then fully charging before wiping the stats could help also.
Sent from my SCH-I500 using XDA App

If you're using theme, remove it by flashing a new ROM. I've heard that helps with battery life, so I'm trying it out myself to see if that's really the case.

Try using a program called juicedefender from market. I found it helps my battery.

No themes being used...just the stock eb01.
Sent from my SCH-I500 using XDA App

There are some reports of the GPS never really turning off using eb01. If the Gps is enabled in the drop down, disable it and report back after your next charge cycle. Obviously you can enable it when you need it, but remember to disable it after you finish.
This is possibly a kernel bug, so it may not be fixed until the next update.
Sent from my SCH-I500

Extreme Battery Level Drop After Reboot, Increases During Use

The topic pretty much explains it. I've been using different modified stock roms and now I'm on the latest nightly of CM7, and I keep having this issue. After a reboot at around 50%, the battery drops to 15%. The weird part is that while I continue to use the phone, it slowly rises back up to sometimes 30% and then starts going back down. I've always cleared battery stats when flashing and calibrated (which I believe is unnecessary), but I don't know if this is a problem with the battery, the phone, or if anyone else is having the same issue?
Attached is a screenshot of battery usage. You can see I never actually charged the phone.
Sent from my GT-I9100 using Tapatalk

I have exactly the same issue.
Sent from HydrOG3N MOD S2.
Technology Evolves, Android Evolves.
HydrOG3N is THE Revolution.

[email protected] looks like a bow and arrow..
anyway guys, you need to recalibrate your battery, its not being read accuracy.
download BatteryCalibration from the market, charge your phone till 100% (not just 100% but when it beeps, that its truely at 100%), then use BatteryCalibration to calibrate your battery, and then drain it to 0.. (crank full brightness, turn on LED flashlight, blast internet radio, whatever makes it drain faster to get this part overwith), then recharge it to max.
so;
charge to full 100%
while still plugged in, run BatteryCalibration
discharge to 0%
recharge to 100%
battery successfully calibrated, you will now have an accurate reading

I had exactly the same issue on 3 different custom roms....finally resolved by going bck to stock rom
mgxplyr said:
The topic pretty much explains it. I've been using different modified stock roms and now I'm on the latest nightly of CM7, and I keep having this issue. After a reboot at around 50%, the battery drops to 15%. The weird part is that while I continue to use the phone, it slowly rises back up to sometimes 30% and then starts going back down. I've always cleared battery stats when flashing and calibrated (which I believe is unnecessary), but I don't know if this is a problem with the battery, the phone, or if anyone else is having the same issue?
Attached is a screenshot of battery usage. You can see I never actually charged the phone.
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
Sent from my GT-I9100 using XDA App

soraxd said:
[email protected] looks like a bow and arrow..
anyway guys, you need to recalibrate your battery, its not being read accuracy.
download BatteryCalibration from the market, charge your phone till 100% (not just 100% but when it beeps, that its truely at 100%), then use BatteryCalibration to calibrate your battery, and then drain it to 0.. (crank full brightness, turn on LED flashlight, blast internet radio, whatever makes it drain faster to get this part overwith), then recharge it to max.
so;
charge to full 100%
while still plugged in, run BatteryCalibration
discharge to 0%
recharge to 100%
battery successfully calibrated, you will now have an accurate reading
Click to expand...
Click to collapse
I'll try this one more time and report back.

mgxplyr said:
I'll try this one more time and report back.
Click to expand...
Click to collapse
Sorry guys, but your method with BatteryCalibration is useless ....
If you wanna do a correct calibration, look at here http://forum.xda-developers.com/showthread.php?t=1312273
Cheers

Put back the battery on the right side.
8. Turn on the phone.
9. Pray the Battery god
And that post is just nonsense based on the old battery bump method .
jje

mgxplyr said:
The topic pretty much explains it. I've been using different modified stock roms and now I'm on the latest nightly of CM7, and I keep having this issue. After a reboot at around 50%, the battery drops to 15%. The weird part is that while I continue to use the phone, it slowly rises back up to sometimes 30% and then starts going back down. I've always cleared battery stats when flashing and calibrated (which I believe is unnecessary), but I don't know if this is a problem with the battery, the phone, or if anyone else is having the same issue?
Attached is a screenshot of battery usage. You can see I never actually charged the phone.
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
i have the same problem when i use custom roms.
i have been using pure stock rom by wannam but rooted for the past week with 12 hours aday syncing and surfing the net and plenty of voice calls via viber and my battery lasts at least 16 to 18 hours.
right now i am using odexed KL3 Kernel KL2Base KL1modem 2.3.6 and it is absolutely amazing interms of battery life and performance.
http://forum.xda-developers.com/showthread.php?t=1292825
http://www.multiupload.com/06I066U6S8
i have gotten rid of all samsung craps through titanium backup. i only have samsung apps application cuz of some paid apps which are for free such as tapatalk and many more on samsung app store.
my free memory is 97mb (original rom free memory is only 27mb)
i dont use any task killers i use 1Tapcleaner pro.

JJEgan said:
Put back the battery on the right side.
8. Turn on the phone.
9. Pray the Battery god
And that post is just nonsense based on the old battery bump method .
jje
Click to expand...
Click to collapse
Maybe, you wanna share a better way to all of us ?

Are you using speeded kernel. If you are then it is because logging and debugging is off.
Sent from my GT-I9100

Completely stock phone never rooted.
Same problem.
Just sayin'
Sent from my GT-I9100 using XDA App

Got the same here, very strange, on CM7
Sent from my GT-I9100 using XDA App

This thing only happens on CM7 for me. It had 40% before reboot and like 15% after. However mine only increased to about 17% then started dropping as usual. This never happened on any stock ROMs I've tried(stock, not themed/modded stock).
Sent from my GT-I9100 using xda premium

did you
did you rsolve the problem ? how? I have the same problem and I tried more stock roms ... I don't know what tot do ....

Its nothing to do with calibration etc, its just how the fuel gauge chip works, it learns and more accurately reports usage over time. For example, if you reboot and (I can't remember the actual voltages for the S2) you have 1200mV, the chip goes, "ah, that is 15% battery." Then as you use it more, it relearns its settings and goes "aaah, my mistake 1200mV is really 30% battery. I'll display that instead."
Its been covered frequently that "calibrating" the battery of the S2 in any way but actually using it, is next to useless.
Sent from my GT-I9100 using xda app-developers app
---------- Post added at 11:05 AM ---------- Previous post was at 11:03 AM ----------
Also just noticed this thread is a year old, but hopefully it will help the poster above.
Sent from my GT-I9100 using xda app-developers app

I'm having this problem too, what did you all do besides get new phones?

Got the same here, after update stock jellybean

Had this problem, when my S2 was half a year old.
I got the original Extended Battery and that solved this issue completely.
The replacement Battery has held up since 2013

soraxd said:
[email protected] looks like a bow and arrow..
anyway guys, you need to recalibrate your battery, its not being read accuracy.
download BatteryCalibration from the market, charge your phone till 100% (not just 100% but when it beeps, that its truely at 100%), then use BatteryCalibration to calibrate your battery, and then drain it to 0.. (crank full brightness, turn on LED flashlight, blast internet radio, whatever makes it drain faster to get this part overwith), then recharge it to max.
so;
charge to full 100%
while still plugged in, run BatteryCalibration
discharge to 0%
recharge to 100%
battery successfully calibrated, you will now have an accurate reading
Click to expand...
Click to collapse
did it but it still there... phone flicks and goes off at or below 40% wont turn on again:crying:

same here and I got the 2000 mAh samsung battery back in the days but now it happens with both of them also when my phone shuts off the screen brightness start flashing weirdly

Wiping Battery Stats Doesn't Fix or Increase Battery Life.

Yup, I said it. Nothing. Nada. Zip. Well, deleting the .bin file does do something...it resets the battery stats. Wanna know what else resets the stats?? Charging your phone to 100%. So, whatever benefit you saw from deleting the .bin was a placebo effect. Don't get me wrong, deleting it won't hurt anything. But it doesn't help anything either, and it certainly doesn't calibrate your battery. The only thing that file contains are stats, such as:
1. info about wakelocks
2. info about partial wakelocks
3. info about screen on time
4. info about screen brightness
I'm tempted to get into how lithium ion cells work, but that is a boring subject. I will say that li-ion cells don't have a memory to them, so there really isn't a "calibration" process. I will say that if you have piss poor battery life, you should consider the following:
1. An application/process that isn't allowing the phone to sleep correctly (keeping this general)
2. Any SamSprint firmware or derivative thereof
3. Knock it off with the overclocking. If you wanna screw with frequency tables and voltages, or let someone else do it and flash their kernel, be my guest. But don't ***** about your battery life if you do
4. YOUR BATTERY!!!!
Wanna know how I fixed the ****ty battery life on my girlfriend's Epic? I bought her a new battery I nice new shiny Epic Touch 4g battery with 20% more capacity and BAM, 2 days of battery life easily instead of 4-5 hours.
Seriously though, so many things affect not only battery life, but battery lifespan e.g. age (many users have had this phone for 1.5 years), # of charge/discharge cycles, excessive heat or cold (I bet a lot of people keep their phone in their pocket or a purse, huh?), etc. And while there may be quality control standards in the battery manufacturing process, not all batteries are equal and it's very possible that a battery was well below its stated capacity even when it was brand new.
Anyway, I'm tired and I need a coffee. I'm interested to hear others chime in and add to the discussion. Flame on! jk
Ryan

Crap! This was supposed to go in general... Mods, please move

This is what I've been saying all along. You put a battery in. You charge it. End of story.
All these people wasting literally hours upon hours on "calibrating" their battery are tools who should not be members of a development forum.
http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer

zeppelin481 said:
Crap! This was supposed to go in general... Mods, please move
Click to expand...
Click to collapse
lol was gonna say, the only flaming you should get for this is for being in the wrong section!

Specialksg1 said:
lol was gonna say, the only flaming you should get for this is for being in the wrong section!
Click to expand...
Click to collapse
It was a total accident. I had a thread I was writing and the session expired. Lost the whole thing. Rewrote and didn't pay attention to the section. I expect to be flamed for it

zeppelin481 said:
Crap! This was supposed to go in general... Mods, please move
Click to expand...
Click to collapse
maybe if you drank your coffee you wouldn't make noob mistakes!

I saw you asked to be moved to general, that was my first question as well

Many people will argue that wiping battery stats is actually WORSE for battery life while using the same battery. After cycling perhaps. I think switching batteries requires a stat wipe though.

ksmullins88 said:
maybe if you drank your coffee you wouldn't make noob mistakes!
Click to expand...
Click to collapse
You're probably right. And I technically had 2 cups today, just not my usual gallon! I hope a mod moves it soon because I feel like a huge tool now...

zeppelin481 said:
You're probably right. And I technically had 2 cups today, just not my usual gallon! I hope a mod moves it soon because I feel like a huge tool now...
Click to expand...
Click to collapse
Lol! Hey at least it wasn't a completely idiotic thread like some of the people post in developement so you get at least 1 point for that... on topic... completely agree anybody that sees better battery life after Calibrating their battery just didn't use their phone as much after doing so... now maybe everybody will quit telling the people with bad battery life to calibrate and it will fix their issues...
Sent from my SPH-D700 using Tapatalk

Here we go...
Wiping battery stats has NOTHING to do with battery 'life'. It does however effect time from a full charge if charged from the epic itself.
What the file that is removed does it tell android what the battery level is for logging and status info. When something changes like the battery strength (age) or life change from the rom/kernel/tweaks then you need to delete that file or else it will assume the older setup is used as a norm. Android uses the data to tell the battery to stop charging at a level of 95ish% and also to power down at 5ish%. If these values are incorrect the phone won't keep a charge as log or power off earlier.

zeppelin481 said:
You're probably right. And I technically had 2 cups today, just not my usual gallon! I hope a mod moves it soon because I feel like a huge tool now...
Click to expand...
Click to collapse
Lmao, I hope they leave it in here just because
Sent from my SPH-D700 using XDA App

marcusant said:
Here we go...
Wiping battery stats has NOTHING to do with battery 'life'. It does however effect time from a full charge if charged from the epic itself.
What the file that is removed does it tell android what the battery level is for logging and status info. When something changes like the battery strength (age) or life change from the rom/kernel/tweaks then you need to delete that file or else it will assume the older setup is used as a norm. Android uses the data to tell the battery to stop charging at a level of 95ish% and also to power down at 5ish%. If these values are incorrect the phone won't keep a charge as log or power off earlier.
Click to expand...
Click to collapse
But this is right... sometimes if you don't clear your battery stats your phone still thinks you have, for example, say 75%, when you really have something less, like 50%. Thus when you charge it, it will think its charging to 100 from 75 rather than from 50. Leaving you 25% less battery or whatever and your phone will seem like its dying faster. Only because you haven't "fully" charged the battery. So in some cases, calibrating the battery by removing the file is neccessary.
Sent from my SPH-D700 using XDA App

Moved......NooB

marcusant said:
Here we go...
Wiping battery stats has NOTHING to do with battery 'life'. It does however effect time from a full charge if charged from the epic itself.
What the file that is removed does it tell android what the battery level is for logging and status info. When something changes like the battery strength (age) or life change from the rom/kernel/tweaks then you need to delete that file or else it will assume the older setup is used as a norm. Android uses the data to tell the battery to stop charging at a level of 95ish% and also to power down at 5ish%. If these values are incorrect the phone won't keep a charge as log or power off earlier.
Click to expand...
Click to collapse
This. End of story, wiping does help in certain cases.
Sent from my SPH-D700 using xda premium

Next time someone complains about battery life I'm gonna tell em to order an epic touch battery, its really the only way
Sent from my SPH-D700 using xda premium

Battery stats do nothing... I never charge my battery. I swap out with charged batteries. You can NOT make your power on time longer with battery stats!!! I've proved that with swapper batteries versus charging and wiping stats... It's a myth only because there is a file which tracks status. That file is rewritten to and reset everytime I swap batteries.
IT'S A MYTH!!!
Sent from my SPH-D700 using XDA App

troyolson92 said:
Battery stats do nothing... I never charge my battery. I swap out with charged batteries. You can NOT make your power on time longer with battery stats!!! I've proved that with swapper batteries versus charging and wiping stats... It's a myth only because there is a file which tracks status. That file is rewritten to and reset everytime I swap batteries.
IT'S A MYTH!!!
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
This. The battery stats contain nothing about your battery percentage. Those who think that are misinformed.

I thought the percentage is directly related to the voltage left on the battery. So how could any stats affect that?

xopher.hunter said:
Next time someone complains about battery life I'm gonna tell em to order an epic touch battery, its really the only way
Sent from my SPH-D700 using xda premium
Click to expand...
Click to collapse
Look out! Here comes the Peanut Gallery! But seriously, my point was that most people don't stop and think for even a second that their battery might be the problem. If you have a 2 year old battery that you've put through the ringer and it you are getting ****ty battery life, you should quit being a cheap ass and buy a new battery. The Epic Touch battery is $18 on Amazon and a 20% increase in capacity. Kind of a no brainer. Unless you're a cheap ass. Or slow. Or you think that wiping a binary file will magically fix it. Or you're a cheap ass.

[Guide] Calibrating battery

I found a guide somewhere on the internet on the best way to calibrate battery stats on a rooted device when I had my old hero and I use it a lot to this day so I decided to share the best way to do it here. If there is in fact a thread about this already in our forums I apologize but I could not find one. So here it is.
Step 1.
First and foremost charge the phone to 100%(Even if it says 100% wait about 5 minutes or so just be sure.)
Step 2.
Once it is at 100% go into data/system (using root explorer) and delete the batterystats.bin file there.
Step 3.
Unplug the charger and reboot to recovery, wipe cache and dalvik cache and wipe battery stats once more while you're there just to make sure they're gone.
Step 4.
Power the phone down and plug it back in. Charge it to 100% while it's off (the battery bar can be deceiving so even once it shows it's full give it five more minutes or so to be sure) and then power up.
*As a side note, if you are using stock kernel, or a kernel without the 100% battery mod then your only going to be at 96%. Thanks to Glennkaonang for reminding me of this.
Once it is booted to the OS you should now see that the battery bar is at 100%. (please note that when it's going through the "Android is upgrading" thing it can take 1 or 2% off the battery if you have lots of apps)
Final step.
Wait for the phone to die completely (to where it shuts off on its own) and let it charge to 100% while the phone is off and power it back up. Do this step at least two or three times.
After that you should have a fully calibrated battery and have no more messed up battery reporting.
Photo of my average battery life just for fun.
Everybody enjoy! If this helped you please hit thanks!
*Thanks to whoever it was that wrote this up in the first place. If I knew who it was I would give proper thanks.
Sent from my Nexus S 4G using xda premium

Unless my batt % reporting goes wonky between reboots, I don't ever wipe stats. It doesn't necessarily increase your battery life, but it does appear to fix incorrect reporting.
Sent from my Nexus S

Wipe batterystats and fix permissions working well after each kernel change but I will give a try.

GideonX said:
Unless my batt % reporting goes wonky between reboots, I don't ever wipe stats. It doesn't necessarily increase your battery life, but it does appear to fix incorrect reporting.
Sent from my Nexus S
Click to expand...
Click to collapse
I didn't think it would improve battery life either but it does. Maybe not a HUGE amount but it definitely does help a little. Plus it will give you the correct percentage rather than showing 100% when it's really only 95%. Lol. Anyways, to each their own.
Sent from my Nexus S 4G using xda premium

It thought someone from Google talked about this before and how it's unnecessary?

doa4ever said:
Wipe batterystats and fix permissions working well after each kernel change but I will give a try.
Click to expand...
Click to collapse
Yeah this is kind of a more in depth way of doing it and it seems to help a bit more.
Sent from my Nexus S 4G using xda premium

Charge it to 100% while it's off (the battery bar can be deceiving so even once it shows it's full give it five more minutes or so to be sure) and then power up.
It's not work on my phone

tuansyaz said:
Charge it to 100% while it's off (the battery bar can be deceiving so even once it shows it's full give it five more minutes or so to be sure) and then power up.
It's not work on my phone
Click to expand...
Click to collapse
Maybe it's not working on your phone because you're using the stock kernel which doesn't have a Battery Life Extender cosmetic MOD.
It's just cosmetic, actually it's still the same 96% as all other Android devices do.
CMIIW

glennkaonang said:
Maybe it's not working on your phone because you're using the stock kernel which doesn't have a Battery Life Extender cosmetic MOD.
It's just cosmetic, actually it's still the same 96% as all other Android devices do.
CMIIW
Click to expand...
Click to collapse
That's pretty much what I was going to say. Lol. I need to add that to the OP.
Sent from my Nexus S 4G using xda premium

This doesn't do anything other than fix incorrect battery logging, it DOES NOT increase battery life in any way.
Not even a tiny bit. Nada. Zip. Zero.
Dianne hackborne covered this on Google+ and said repeatedly that it doesn't extend battery life in the slightest. She would know as she wrote the code I believe.
Placebo effect in operation here. Plain and simple.

Thanks a bunch.

mabry said:
Thanks a bunch.
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Click to collapse
You're very welcome.
Sent from my Nexus S 4G using xda premium

Why do you insist on bumping this? No new information has been uncovered, nothing has changed.
The only reason I can think of is that you are looking to stock up on thanks.

I did this before I even found this thread, save for I use a Battery Calibration app from the market instead of deleting the .bin file. (App does it for me.)
This was the result.
Word.

Great guide! I haven't saw a calibrating guide either. I think it should be sticky!

Joshhayes801 said:
Why do you insist on trolling my stuff? Maybe you should spend your time doing something useful instead of wasting it on something that obviously doesn't matter to you. I bump it so new users can see it. If you don't like it, don't look at it. :thumbup:
Sent from my Nexus S 4G using xda premium
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I wasn't trying to troll your stuff. I appreciate that somebody created this guide (albeit now proved to be ineffective/useless) as an informative resource for others. That being said, this information is easily found everywhere, especially with search.
Please understand, if everybody bumped a thread they created every few days because they thought it was useful, nothing new would ever show up on the first page of the forum. It would be the same threads appearing over and over.
I wasn't trying to offend you, I just think that bumping dying/dead threads is counter intuitive to growing this forum community.
Thank you.

It is in a sense misinformation though. It doesn't calibrate the battery, merely wipes androids battery usage statistics, which are only for reference to the user not the system.
Although included, the only pseudo calibration is charge fully, discharge fully then charge fully. This process wipes battery stats anyway.

rhanks
Sent from my Nexus S

gear.h34d.2012 said:
I did this before I even found this thread, save for I use a Battery Calibration app from the market instead of deleting the .bin file. (App does it for me.)
This was the result.
Word.
Click to expand...
Click to collapse
I have never calibrated my battery and get almost exactly the same battery life as what you are getting. All this does is wipe the stats.
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Just Flash It !!!