Related
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.
I am kind of amazed with what I am seeing, and am wondering if someone on XDA can help me understand this. So I was running CM7.x on my MT4G for over an year, and this past weekend I switched to CoreDroid because I wanted to try out Sense.
I had a bad feeling about the battery usage because the ROM was "heavier" than CM7.x in terms of UI, Graphics (of course because of Sense 3.5). I went ahead and installed the ROM anyways.
Within a couple of hours, I went from being fully charged to 5% battery....it was draining faster than anything I have seen before. I read CoreDroid release notes and they had mentioned about this severely fast battery drain.
Based on their recommendation, I fully charged the phone once battery level reached 5%. This time, my battery lasted about 17-18 hours, and again I fully charged it when it reached 5%.
Now after the second recharge, its been about 24 hours and I am at 97% battery. I didn't believe CoreDroid release notes that battery life will become better after couple of recharges; I thought it was a bunch of bull to get people to install their ROM.
I am glad to say I was wrong Can someone please explain this battery calibration deal to me?
Oh boy... This is a highly controversial topic. Here we go.
Basically there are people who swear by it and people who say it does nothing. That its all in your head.
Even this lady at google who helped create Android says it does nothing.
https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT
Sent from my HTC Glacier using XDA App
estallings15 said:
Oh boy... This is a highly controversial topic. Here we go.
Basically there are people who swear by it and people who say it does nothing. That its all in your head.
Even this lady at google who helped create Android says it does nothing.
https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT
Sent from my HTC Glacier using XDA App
Click to expand...
Click to collapse
Best link ever; most informative.
- I think everyone loves Dianne now.
- Someone has a flying car already ...
- In the middle of the most intellectual and technical discussion of battery usage that I have seen, someone asks what is the best facebook app - brilliant!
So...
1. Battery stats are calculated differently per phone and OS version.
2. Battery stats reporting is definitely not %100 accurate.
3. Battery percentage is calculated differently per phone and OS version.
4. Battery percentage reporting is definitely not %100 accurate.
5. On some phones, you can override battery charging limitations by 'bumping'.
6. 'Bumping' is not recommended as can shorten your battery life.
They actually did not cover the OP situation where you let that battery go below 5%, although I am always guilty of skim reading. Still, extremely informative and explains a lot of previously posted battery phenomena.
estallings15 said:
Oh boy... This is a highly controversial topic. Here we go.
Basically there are people who swear by it and people who say it does nothing. That its all in your head.
Even this lady at google who helped create Android says it does nothing.
Sent from my HTC Glacier using XDA App
Click to expand...
Click to collapse
Wow, that made up for intense reading - thanks a lot.
It can't be something in my head for sure, If the difference was say a couple of hours I probably would have agreed with "the lady at Google" But I went from 2-3 hours to 24+ hours, so yes it's not in my head
Thanks again for your feedback.
Homerbsharp said:
Best link ever; most informative.
- I think everyone loves Dianne now.
- Someone has a flying car already ...
- In the middle of the most intellectual and technical discussion of battery usage that I have seen, someone asks what is the best facebook app - brilliant!
So...
1. Battery stats are calculated differently per phone and OS version.
2. Battery stats reporting is definitely not %100 accurate.
3. Battery percentage is calculated differently per phone and OS version.
4. Battery percentage reporting is definitely not %100 accurate.
5. On some phones, you can override battery charging limitations by 'bumping'.
6. 'Bumping' is not recommended as can shorten your battery life.
They actually did not cover the OP situation where you let that battery go below 5%, although I am always guilty of skim reading. Still, extremely informative and explains a lot of previously posted battery phenomena.
Click to expand...
Click to collapse
Lol....yea that FB app question was pretty brilliant I'll try to get in touch with CoreDroid folks, and see if they can answer my question.
I mean it does work, it's almost like a miracle to me.
I know. I just can't figure out WHY. Its been really bothering me.
Sent from my HTC Glacier using XDA App
Jessooca said:
Which battery calibration app are you using?
Sent from my HTC Glacier using xda premium
Click to expand...
Click to collapse
None, I am just surprised to see improved battery life after couple of 'full-drain, full-charge" operations.
BTW, care to suggest a good battery calibration app? Much appreciated.
well, the best battery calibration app Ive used is Battery Calibration by NeMa, but now after reading this thread it seems that they dont really do anything
ajrulez said:
None, I am just surprised to see improved battery life after couple of 'full-drain, full-charge" operations.
BTW, care to suggest a good battery calibration app? Much appreciated.
Click to expand...
Click to collapse
The drain-charge cycles is just a way to calibrate the battery- takes more time to "forget" the old stats, so people either use an app or manually delete the battery statistics so one can start accumulating fresh statistics.
After a few days you get your statistics right, from then on the battery indicator will be more or less accurate.
Battery drainage has nothing to do, really, with how many times you'll calibrate or drain/ charge or whatever. It has to do with how much you use screen on, Wifi, BT, gps, partial wakelocks, apps syncing etc. In other words- use your phone and be assured battery is going to drain. Leave it alone, let it sleep- battery will last a couple of days...
Sent from my HTC Glacier using Xparent Cyan Tapatalk
just to clarify, and sorry for butting in, but there is no such thing as "calibrating your battery"... this has been debunked by many people who understand android's Linux kernel and even an android engineer at Google.
the batterystats.bin file is simply that, a bin. it does nothing more than collect dumped statistics of what exactly has been using your battery, how long, how much power those processes used, etc. it has absolutely nothing to do with your phone's ability to display correct information about how much juice you have left - that function is within the Linux kernel which monitors, and controls power throughout the device.
ask yourself this... ever flashed a ROM with say 50% power left on a charge? what happens after your first boot? does your phone suddenly have no idea how much charge is left? no. it doesn't. because the new kernel you just flashed with your ROM is picking up right where you left off.
wiping battery stats is useless. period. it.does absolutely nothing to better battery life. that is fact. that is your phone. that is your Linux platform and straight truth in how it works.
and since it is stored in the data directory, every time you flash a ROM and wipe data, you are wiping the battery stats... so why do you boot up and do it again... I know... good question.
Sent from EVO 3D using XDA premium
aznprodgy said:
well, the best battery calibration app Ive used is , but now after reading this thread it seems that they dont really do anything
Click to expand...
Click to collapse
Hehe, yes I doubt if these battery calibration do anything.
estallings15 posted a very informative link in 2nd or 3rd post (of this thread)....all these battery calibration apps simply delete the battery stats file at least thats what one from NeMA does anyways
cobraboy85 said:
just to clarify, and sorry for butting in, but there is no such thing as "calibrating your battery"... this has been debunked by many people who understand android's Linux kernel and even an android engineer at Google.
the batterystats.bin file is simply that, a bin. it does nothing more than collect dumped statistics of what exactly has been using your battery, how long, how much power those processes used, etc. it has absolutely nothing to do with your phone's ability to display correct information about how much juice you have left - that function is within the Linux kernel which monitors, and controls power throughout the device.
ask yourself this... ever flashed a ROM with say 50% power left on a charge? what happens after your first boot? does your phone suddenly have no idea how much charge is left? no. it doesn't. because the new kernel you just flashed with your ROM is picking up right where you left off.
wiping battery stats is useless. period. it.does absolutely nothing to better battery life. that is fact. that is your phone. that is your Linux platform and straight truth in how it works.
and since it is stored in the data directory, every time you flash a ROM and wipe data, you are wiping the battery stats... so why do you boot up and do it again... I know... good question.
Sent from EVO 3D using XDA premium
Click to expand...
Click to collapse
Yep, agree with your comments 100%. After reading the link posted by estallings15 earlier in this thread, the myth of battery calibration was busted
I agree with most that Battery Calibration is a joke, and doesn't mean anything. However, batteries in many devices (not just our Cell Phones) seem to benefit from proper discharge/full charge cycles. In fact, it's usually recommended in things like electric RC cars that you completely run down the battery as far as you can go (realistically of course!) prior to charging; also to prolong battery life. I always notice at least slightly longer use times if I don't always pop the thing on a charger at 75%. But go with what works for ya, and of course some roms DO drain faster than others. And less screen haha
Most of the time you read responses about sucking battery life after flashing a rom or kernel. Battery life seems to drop dramaticly.
There are a lot of discussions about callibration methods, and believe me, I tried them all. But I got suspicious when I found no differences in the results. The thing I did discover was that after a couple of days the battery usage will become more stable. No matter what callibration method is used.
The only thing that seems to work is to charge your battery to full, after a flash. nothing more.
I had battery life issues that wouldn't go away, so I just installed that some battery life app. Somehow that helped so much
iffamies said:
I had battery life issues that wouldn't go away, so I just installed that some battery life app. Somehow that helped so much
Click to expand...
Click to collapse
What was the battery issue?
A Google dev even said himself that wiping battery stats was useless
Sent from my GT-N7000 using xda premium
jellevanb said:
What was the battery issue?
Click to expand...
Click to collapse
One that was cured by a placebo.
nobnut said:
One that was cured by a placebo.
Click to expand...
Click to collapse
+1 the stars are erased every time you plug the phone into a charger
Swyped from the white galaxy note.
Seidio is coming with a 5000mAh battery. Problems solved.
I believe the purpose of deleting battery stats is to calibrate the reading of the battery gauge in the note, nothing to do with battery life!
Sent from my GT-N7000 using XDA App
Deleting battery stats was debunked months ago
From the Beast : Galaxy Note
You can try BatteryCalibration apps from the market. Does the same thing!
Sent from my GT-N7000 using XDA App
Calibrating
nobnut said:
One that was cured by a placebo.
Click to expand...
Click to collapse
+1 Doing a reboot then a full charge with display off always chills any battery overheating I've had.
Deleting stats will improve calibration so that the Note doesn't discharge for two hours and show 100% , then discharge another two hours and drop to 80%. Instead calibrating will show 90% after two hours then 80% after another two. The net result of battery use is still the same, only the metering is a little more accurate.
joshnichols189 said:
A Google dev even said himself that wiping battery stats was useless
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
sprintuser1977 said:
Deleting battery stats was debunked months ago
From the Beast : Galaxy Note
Click to expand...
Click to collapse
This is true, it was even on the xda portal page:
http://www.xda-developers.com/andro...-battery-stats-does-not-improve-battery-life/
---------- Post added at 10:10 PM ---------- Previous post was at 10:01 PM ----------
With regards to calibration, the Galaxy Note has the same MAX17042 fuel-gauge chip as in the Galaxy S2.
Entropy512 posted about how this chip functions on the Galaxy S2, and how different it is to the HTC devices which have a different way of measuring charge that does need calibrating now and then.
From what I understand, although the MAX17042 chip can 'glitch' readings sometimes, it tends to 'self-calibrate' over time:
http://forum.xda-developers.com/showpost.php?p=18677485&postcount=31
I installed Batery Callibration in my Galaxy Note .. Love this app...... Increase so much my life battery
One question: How often I Calibrate My Battery??
1. After flash or update ROM.
2. When replace or pull out & put in battery for whatever reasons.
3. I do calibration about once a week.
I always drain battery till it is 1% before plug in charger after hit the calibration button.
Battery time is acceptable to me...15+ hrs with normal use (stock ICS rooted).
Thank you very much for the tips. I Have Rocket Room V07 and Speedmod kernel 3.3. With 3g and Wifi turn on all day, my battery last 24 hs.....Very good for me
which battery calibration app?
andreborg75 said:
I installed Batery Callibration in my Galaxy Note .. Love this app...... Increase so much my life battery
One question: How often I Calibrate My Battery??
Click to expand...
Click to collapse
LowDef said:
1. After flash or update ROM.
2. When replace or pull out & put in battery for whatever reasons.
3. I do calibration about once a week.
I always drain battery till it is 1% before plug in charger after hit the calibration button.
Battery time is acceptable to me...15+ hrs with normal use (stock ICS rooted).
Click to expand...
Click to collapse
A question for both of you and anyone else who's using such a tool: which battery calibration app do you use? Any views on how good (or not) these apps are?
Cheers
I use battery monitor widget pro, very effective and good widget also.
Sent from my GT-N7000 using xda premium
andreborg75 said:
I installed Batery Callibration in my Galaxy Note .. Love this app...... Increase so much my life battery
One question: How often I Calibrate My Battery??
Click to expand...
Click to collapse
Never. That app does NOTHING. You have fallen victim to the placebo effect.
Wiping battery stats does NOTHING on any Android device other than change the behavior of Settings->Battery. It does nothing with regards to fuel gauge calibration.
The fuel gauge chipset in our device does not require calibration and calibration techniques cannot be applied to it. (With one exception - resetting it after a reboot on low battery can have a temporary positive effect - but you can just wait a few hours for it to converge.)
largeruk said:
A question for both of you and anyone else who's using such a tool: which battery calibration app do you use? Any views on how good (or not) these apps are?
Cheers
Click to expand...
Click to collapse
As stated above - they are 100% useless and worthless on our device and any other Samsung Galaxy S1/S2 family device.
To enthropy512, thank you very much for your hardwork for us here in xda. How about a tread that says, after a battery full, you take out the battery for 3 mins then put it back again.
largeruk said:
A question for both of you and anyone else who's using such a tool: which battery calibration app do you use? Any views on how good (or not) these apps are?
Cheers
Click to expand...
Click to collapse
Battery Calibration, try following the procedure stated therein and verify by yourself if it works.
At least you have nothing to lose but very poor battery performance.
You guys should have ever heard of an alternative battery product named MUGEN that selling original and extra sized batteries world wide including range of Galaxy batteries. They also supply a battery calibration app on Play Store regardless phone models but it's for rooted phone only. If this app does nothing they wouldn't bother wasting their time developing it.
Another thing is to investigate what apps or services prevent your phone from going into deep sleep, also try freezing apps or services you aren't using.
Those are my tricks for having battery performance improved.
andreborg75 said:
I installed Batery Callibration in my Galaxy Note .. Love this app...... Increase so much my life battery
One question: How often I Calibrate My Battery??
Click to expand...
Click to collapse
Hi can i have the link for the calibration app ???
Search battery calibration on google play...its free
Your phone had to be root to use battery calibration
i dont trust any battery callibration app or battery power saving app
i only used cpu spy and betterbatterystats
my point is check ur device, does it goes to deepsleep everytime screen turned off. if it doesnt check using bbs what apps making ur device turned on/wake ur device. im very satisfied with this method. 1x full charge for 24 hr for my daily use and only 24 % battery drained for 24 hr if u didnt use ur device at all(standby)
Sent from my GT-N7000 using xda app-developers app
Hello,
I use Tytung's ICS 4.0.4 for my T-Mobile HTC HD2 (NAND), I've been using this ROM for months.
As such there is no problem with functioning of the ROM.
But my battery drains at a very fast rate. With 6hrs of use it drains to 20% at lowest brightness and no major applications running (2 applications in background at most).
Data enabled (2G).
What to do? Please help!!
Sent from my T-Mobile HTC HD2 using XDA Premium.
Can you download CurrentWidget from the Play store and give a value in mA? If you mean 6hrs without any usage then that's pretty poor. Try turning on airplane mode to determine whether it's an app or one of your connections that's causing the problem.
In currentwidget, the values should be approximately 4mA drain in standby with any connections enabled and 2mA in standby in airplane mode. Screen on drain varies a lot more.
OK, thanks. will revert back soon.
With screen OFF, networks ON, 2g enabled....drain is 6mA.
With screen OFF, airplane mode ...drain is 5mA.
Sent from my T-Mobile HTC HD2 using XDA Premium.
That's high but shouldn't be causing a drain of 20% in 6 hours. It's probably just draining a lot when you're using the phone, and there's not much you can do other than turning the brightness down which you've done already.
try wiping battery stats through recovery...fully charge your battery then wipe stats and let your battery to get fully discharge before you connect it to a charger for about a week...My battery never lasted more than a half day before doing this...now it lasts more than a day...Hope this works
Okz.. will try this..hope this works.
Sent from my T-Mobile HTC HD2 using XDA Premium.
eliaskammas said:
try wiping battery stats through recovery...
Click to expand...
Click to collapse
I wonder if this myth will ever die..
Google engineer Dianne Hackberry has talked about several myths about the Android operating system, including wiping battery stats.
The reasoning behind that piece of advice was something like this: If you, at some point, did not charge your Android device fully (for example, only to 80%), it would supposedly remember that battery level as “fully charged” – in this case, you’d only ever get to use 80% of your battery, which is of course less than optimal. So, if you wipe the battery stats, usually done in ClockWord Mod Recovery, the device would “forget” the previous level, here 80%, and instead charge to the full 100% once again, thereby re-calibrating the battery. Or, as Hackborn puts it in more technical terms:
The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/ directory.
However, as she explains, that’s not the case. Because those battery stats, stored in the batterystats.bin file, are only used to maintain information about what is using the battery when not recharging. That is, it essentially holds the information displayed in the Settings > Battery screen. Nothing more, nothing less. Thus:
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
What’s more, you’ve probably noticed that the battery usage data is reset once you recharge your device anyway. From this you can correctly deduce that the battery stats are wiped as well – every time your device is recharged. More or less every day. If there was any effect, you would’ve noticed it without going into recovery and doing that stuff. Typical placebo, eh?
---
I’m as confused as a baby in a topless bar...
^Whenever someone asks 'how do I reduce my battery drain', ten people immediately jump in with 'CALIBRATE!!11oneeleven!'. No hate directed at whoever posted that advice here, I understand how easy it is to be misinformed (as I was about using SetCPU ), I just think that rumours like this are too easily presented as facts.
NYLimited said:
I wonder if this myth will ever die..
Google engineer Dianne Hackberry has talked about several myths about the Android operating system, including wiping battery stats.
The reasoning behind that piece of advice was something like this: If you, at some point, did not charge your Android device fully (for example, only to 80%), it would supposedly remember that battery level as “fully charged” – in this case, you’d only ever get to use 80% of your battery, which is of course less than optimal. So, if you wipe the battery stats, usually done in ClockWord Mod Recovery, the device would “forget” the previous level, here 80%, and instead charge to the full 100% once again, thereby re-calibrating the battery. Or, as Hackborn puts it in more technical terms:
The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/ directory.
However, as she explains, that’s not the case. Because those battery stats, stored in the batterystats.bin file, are only used to maintain information about what is using the battery when not recharging. That is, it essentially holds the information displayed in the Settings > Battery screen. Nothing more, nothing less. Thus:
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
What’s more, you’ve probably noticed that the battery usage data is reset once you recharge your device anyway. From this you can correctly deduce that the battery stats are wiped as well – every time your device is recharged. More or less every day. If there was any effect, you would’ve noticed it without going into recovery and doing that stuff. Typical placebo, eh?
---
I’m as confused as a baby in a topless bar...
Click to expand...
Click to collapse
LOL i was just gonna post but ya beat me to it
i will just add the link to the xda news post about it
http://www.xda-developers.com/andro...-battery-stats-does-not-improve-battery-life/
Nigeldg said:
^Whenever someone asks 'how do I reduce my battery drain', ten people immediately jump in with 'CALIBRATE!!11oneeleven!'. No hate directed at whoever posted that advice here, I understand how easy it is to be misinformed (as I was about using SetCPU ), I just think that rumours like this are too easily presented as facts.
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And I shall not tell you how many times I did erase that bloody file before I too learned the truth. :crying:
Kameirus said:
LOL i was just gonna post but ya beat me to it
i will just add the link to the xda news post about it
http://www.xda-developers.com/andro...-battery-stats-does-not-improve-battery-life/
Click to expand...
Click to collapse
Want me to go back and erase it for ya? No biggie...
Lol...
When one doesn't know a thing, he can be easily fooled about it.
Anyways ...Learnt something new today... :thumbup:
Thank you everyone.
Sent from my T-Mobile HTC HD2 using XDA Premium.
NYLimited said:
Want me to go back and erase it for ya? No biggie...
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LMAO no
sonalikagaur said:
When one doesn't know a thing, he can be easily fooled about it.
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As I said to Nigeldg in an earlier post:
NYLimited said:
And I shall not tell you how many times I did erase that bloody file before I too learned the truth. :crying:
Click to expand...
Click to collapse
sonalikagaur said:
Anyways ...Learnt something new today... :thumbup:
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Click to collapse
And that is all that's important.
to sonalikagaur....
obviously as the guys say don't bother trying my advice
to everyone...
at least now I know not to tell anyone about battery stats again...but now there is a wonder in my head...what made my battery last longer than it did before? I wasn't kidding that it lasts half a day longer than before...obviously battery stats didn't make the job...what did.? :-/
eliaskammas said:
to sonalikagaur....
obviously as the guys say don't bother trying my advice
to everyone...
at least now I know not to tell anyone about battery stats again...but now there is a wonder in my head...what made my battery last longer than it did before? I wasn't kidding that it lasts half a day longer than before...obviously battery stats didn't make the job...what did.? :-/
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Click to collapse
I found out something.... usually I used to keep my 2G ON the whole day...but when I switched my data OFF when not in use...my 6hrs...20% battery remaining changed to 8hrs..n 75% remaining.
That's a huge difference.
Can anyone suggest a good app for this? Switching my data OFF automatically when not in use .!!
Sent from my T-Mobile HTC HD2 using XDA Premium.
I think Juice Defender has this functionality built in.
sonalikagaur said:
I found out something.... usually I used to keep my 2G ON the whole day...but when I switched my data OFF when not in use...my 6hrs...20% battery remaining changed to 8hrs..n 75% remaining.
That's a huge difference.
Can anyone suggest a good app for this? Switching my data OFF automatically when not in use .!!
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Click to collapse
I would guess that many so called "battery saver" apps might have it, not really sure.
I don't turn off data when not in use automatically but I do use Tasker to turn it off for several hours while I sleep.
NYLimited said:
I would guess that many so called "battery saver" apps might have it, not really sure.
I don't turn off data when not in use automatically but I do use Tasker to turn it off for several hours while I sleep.
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Yeah Tasker can do this but it's a paid app. Juice Defender is free and can also do the same thing in this case. I agree that Tasker is awesome but not necessarily for saving battery, more for ease of use.
Nigeldg said:
^Whenever someone asks 'how do I reduce my battery drain', ten people immediately jump in with 'CALIBRATE!!11oneeleven!'. No hate directed at whoever posted that advice here, I understand how easy it is to be misinformed (as I was about using SetCPU ), I just think that rumours like this are too easily presented as facts.
Click to expand...
Click to collapse
Could your go into more detail about you're previous misinformation about SetCPU?
Sent from my ZeJstersHD2 using xda premium