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Yesterday, I let my battery die. Charged it last night, and wiped battery states. Ran the phone like normal today. Was down to about 30% left, rebooted. When everything came back up and running, that battery showed to be 5%. WTF!!! How do I drop 25%, just by rebooting?!?!?!?
chadhoard said:
Yesterday, I let my battery die. Charged it last night, and wiped battery states. Ran the phone like normal today. Was down to about 30% left, rebooted. When everything came back up and running, that battery showed to be 5%. WTF!!! How do I drop 25%, just by rebooting?!?!?!?
Click to expand...
Click to collapse
Bad battery stats...
Recondition
xriderx66 said:
Bad battery stats...
Recondition
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Click to collapse
So...I should wipe the battery stats again after re-charging to 100%?
Then wipe the battery stats in advanced of recovery mode
xriderx66 said:
Then wipe the battery stats in advanced of recovery mode
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Click to collapse
I re-wiped the battery stat this morning. I was down to about 50% when I needed to reboot. When everything came back up, it showed I was down to 28%. Is this an indication that the battery needs to be replaced or should I try a different Kernel?
Either you have a bad battery, bad battery meter, or your not reconditioning right.
Longcat14 said:
Either you have a bad battery, bad battery meter, or your not reconditioning right.
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Click to collapse
What would you suggest I try? What is the proper way to recondition my battery?
Charge to 100%
Boot into recovery
Wipe battery stats
Reboot
Don't unplug charger until at desktop again (You could debate this one, but that's when I do it)
And don't worry about killing your battery, it'll do more harm than good.
Explanation - When you wipe battery stats, it tells your phone you're at 100%
So, if you wipe when you ARE at 100% you'll get accurate readings.
Eogram said:
Charge to 100%
Boot into recovery
Wipe battery stats
Reboot
Don't unplug charger until at desktop again (You could debate this one, but that's when I do it)
And don't worry about killing your battery, it'll do more harm than good.
Explanation - When you wipe battery stats, it tells your phone you're at 100%
So, if you wipe when you ARE at 100% you'll get accurate readings.
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Click to collapse
The past 2 times I did this, the phone was turned off and plugged in and charged over night. this morning I wiped the stat, but i do not remember if I had unplugged it before it finished booting up. I am charging it now, with it on. When it reaches 100%, should I reboot into recovery and wipe it or should I let it run all the way down?
What exactly do you mean by 'let it run all the way down'?
Sent from my SGH-T959
Eogram said:
What exactly do you mean by 'let it run all the way down'?
Sent from my SGH-T959
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Click to collapse
Down to say some were around 20 - 5%.
As far as I understand that shouldn't be necessary, and could weaken your battery.
As long as it's fully charged when you wipe the stats you should be good to go.
Sent from my SGH-T959
Eogram said:
As far as I understand that shouldn't be necessary, and could weaken your battery.
As long as it's fully charged when you wipe the stats you should be good to go.
Sent from my SGH-T959
Click to expand...
Click to collapse
I have another 20% to go. i will let you know tomorrow how things work out.
Eogram said:
As far as I understand that shouldn't be necessary, and could weaken your battery.
As long as it's fully charged when you wipe the stats you should be good to go.
Sent from my SGH-T959
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Click to collapse
Ok...I have ran the phone like normal. Within 6 hours, I am down to 62%. I rebooted the phone, and it still shows me at 62%. At least I have that fixed.
Now, I see some people use OverStock and seem to be getting better battery life. I just want to get about 16+ hours out of my battery. Right now i seem to be pushing 12 hours. What is the tick that i am missing??
For every hundred vibrant users there seems to be a hundred different accounts of battery life, and a hindered different opinions on how to keep it down. 12 hours on the stock battery is pretty good, especially compared to stock.
Mine'll last me around 15+, if I left it not charging, i think.
I'm on overstock, the screen is at the dimmest 95% of the time, and I use setcpu. 1000/1000 with a screen off profile of 200/200. So, that works for me pretty well.
Sent via telepathy
You need to recondition yr battery as posted above, 2-4 cycles. But i prefer to re-flash ROM when battery 100%, should you get proper batt stats.
You may buy new one to test yr system n batt stats, also good for spare. Or just borrow yr friends battery, just to check yr rom n batt stats. Treat it like you did before.
Good luck.
Eogram said:
For every hundred vibrant users there seems to be a hundred different accounts of battery life, and a hindered different opinions on how to keep it down. 12 hours on the stock battery is pretty good, especially compared to stock.
Mine'll last me around 15+, if I left it not charging, i think.
I'm on overstock, the screen is at the dimmest 95% of the time, and I use setcpu. 1000/1000 with a screen off profile of 200/200. So, that works for me pretty well.
Sent via telepathy
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Click to collapse
200/200 conservative scaling and no sleep death? Didn't know that was possible on overstock...guess I'll try it.
Edit: sleep of death...you must be on power save or something which afaik doesn't work at all.
*checks*
Yeah, powersave. What's this about it not working? It occasionally lags a little when I unlock it and the widget definitely says 200
Sent via telepathy
I don't think powersave is supported...try conservative and you'll get sleep death due to the low frequency...you don't get this with powersave because I don't believe it's working...trying to confirm this.
should i wipe battery stats i switching from extend. battery to stock. or only when switching roms? when does this matter?
[Also i know this doesn't belong here but my PC is really slow do easiest way is to ask: is there someway to search all my posts at once as they're becoming hard to keep track of ?]
CleveRuse said:
should i wipe battery stats i switching from extend. battery to stock. or only when switching roms? when does this matter?
[Also i know this doesn't belong here but my PC is really slow do easiest way is to ask: is there someway to search all my posts at once as they're becoming hard to keep track of ?]
Click to expand...
Click to collapse
I switched back to my stock battery after my extended died. I wiped battery stats, wiping stats when flashing new roms is recommended.
Wiping battery stats is never really considered an essential thing to do no matter what. It is nice though to do. I suggest it when you start realizing crap battery life on one ROM/kernel compared to the last one. The suggested way is to wipe it after installing a new kernel and as well as when you swap batteries. Other than that, really no need to in my eyes.
I wipe after every new ROM install, period.
ProTekk said:
The suggested way is to wipe it after installing a new kernel and as well as when you swap batteries. Other than that, really no need to in my eyes.
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Click to collapse
This is when I do it also.
Digging up a thread here, didn't want to waste a new one.. But I have the OEM Extended Battery and I tried wiping my battery stats.. Charge full, reboot into recovery, wipe stats, unplug.. After this I noticed that my battery said 93% even tho the charge light was green.. I drained it until it turned off and charged again overnight.. In the AM, light was green, i turned phone on and its still showing 93% even though it was green. Any ideas? Did I lose that 7% forever?
Sometimes wiping the stats causes a bad battery read. A few reboots should get you back on track. If that doesn't work, try a full battery drain then a full charge. Let us know.
Will try that, even tho I kinda did already. I'm hoping with a few battery cycles the problem goes away.. What Im hoping is I don't need to bump charge now every time like I did when I had my inc
Sent from my ADR6400L using Tapatalk
drawde said:
Did I lose that 7% forever?
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Click to collapse
I doubt you lost anything. It would be like Spinal Tap having an amp which only went to 9.
I only had to wipe when my battery wasn't decreasing in percentage. After I wiped, it started decreasing like it should. I would think any fast reduction in percentage would be a bad battery.
Are there any proven facts out there that it is really ever necessary to wipe them? It's not like it actually improves battery life am I correct?
as far as wiping battery stats goes.
i have only used it when reconditioning a battery.
ie if you start noticing bad (read: worse that you have been getting) battery life after flashing a new rom or kernel. or just after a time using a standard rom.
what i do is
1 turn the phone off.
2 charge it on AC until it goes green and for an hour afterward.
3 unplug it and wait 30 seconds.
4 plug it back in and repeat step 3 until the light goes from red to green within 20 or so seconds. (this is called bump charging)
5 boot into CWR and wipe battery stats. and let it burn all the way down until it wont even turn on (flashing orange led)
6 charge to full and enjoy your maybe improved battery life.
when wiping battery stats, do i have to do it a few times or no? i wiped battery stats at full and drained battery until it turned off twice.. once wiping the stats with CWR and once, and after a cycle, with the 'battery calibrate' app (made by someone here on xda i believe)..
seems to be working okay i guess, but lets say i have 94%, i reset my phone and it comes back with only 84%.. it appears it's still reading my battery wrong by around 10%. is this normal?
It doesn't happen at every reset, looks like just the first one of the day. I guess I can charge to full, reboot, and charge to full again as a workaround.
Sent from my ADR6400L using Tapatalk
i meant to ask this before but I forgot, can anyone try to do that and let me know if it happens to them too or if its just me
Charge with phone on until full then turn it off and charge.. about how long does it stay amber?
Sent from my ADR6400L using Tapatalk
Yea, as the title says.
is there a way to fix this ?
THANKS!
I would try re-calibrating your battery. Try this which is straight from my MIUI guide.... (I suggest method 2 as it is the easiest)....
RECONDITION YOUR BATTERY
AFTER FLASHING IF YOU FIND THAT YOU HAVE BAD BATTERY LIFE TRY ONE OF THE METHODS BELOW TO FIX:
Method One:
Use phone till it dies on its own, completely dead.
Charge phone completely, plus 30 minutes longer.
Unplug phone from charger
Reconnect, you'll notice it's not full, charge till it is again.
This is bump charging and NOT something you want to do often, a few times is okay, in my opinion. You could skip the bump charge if you like.
Phone remains plugged in.
Boot into recovery (volumes + power)
Advanced > wipe battery stats, reboot.
Use phone till it's literally about to shut off (or does) Charge till full + Use phone like normal
OR
Method Two:
Download the Battery Calibration app by NeMa from the Android Market
Click to expand...
Click to collapse
Tell me if this works for you...
A real battery capped to charge at 96% or 97% due to voltage issues that would occur if charged to complete 100%. But samsungs stock ROMS and most other ROMS are customized to display this 100% when its really not at that level. Since MIUI is based off of CM7(and this is uncredited of course), it is not modified in any way and it displays the actual battery life. Which in your case is 96%. Hope this helps.
Sent from my SGH-T959 using xda premium
Hello,
I have ordered a new higher MAH battery for SGS II . I may be running stock ROM/Kernel or any of the custom AOSP ROM/Kernel.
During the kernel/ROM updates I have read that we dont usually need to clear the battery stats (since we are using the same existing battery).
However I will now be using the following battery :
http://www.amazon.com/gp/product/B0058SJ5Q4/ref=oh_o00_s01_i02_details
I need to how to properly calibrate the battery status so I can achieve full charge and maximum run time from this battery. Do I need to clear battery stats (from recovery mode) first and then insert the battery for first time usage or otherwise.
Have read a couple of posts on the subject however none provides a clear defined and fixed approach to the issue.
Any detailed guidance would be appreciated to be of benefit for the community in general.
Thanks.
=================================
Guess there are already enough methods and ways and some even debunk the myth that does the phone really needs any type of calibration/calibration apps at all or not.
Will try diving into it directly to see the effects myself if any.
You don't need to do anything other than sticking it in your phone.
When I got the 2000mah battery, I found my battery life to be equal or even slightly less than the stock one. I fully charged the battery, went to cwm and wiped battery stats, used battery completely till it died and then fully charged once again. It did seem to work as my battery life was much better.
oinkylicious said:
You don't need to do anything other than sticking it in your phone.
Click to expand...
Click to collapse
He's right. Your battery calibrates itself with a full charging.
i read in a number of articles that you should reset/wipe your battery stats with CWM once your battery is at 100%, then switch off your phone and connect to a charger usb/plug until it will be charged to the actual 100% (usually only 1-2% at most)...
morespama2k said:
i read in a number of articles that you should reset/wipe your battery stats with CWM once your battery is at 100%, then switch off your phone and connect to a charger usb/plug until it will be charged to the actual 100% (usually only 1-2% at most)...
Click to expand...
Click to collapse
All 100% wrong .
As it only wipes the stats that show and plays no part in calibration of the battery .
jje
JJEgan said:
All 100% wrong .
As it only wipes the stats that show and plays no part in calibration of the battery .
jje
Click to expand...
Click to collapse
thnx for the correction, what do you think about "Battery Monitor Widget" app? Does its function to calibrate actually work?
Got intrigued by the issue...
No, it doesn't. Due to hardware 'limitations', battery apps can only provide a rough guess at best of charge remaining, discharge rate, etc on SGS2.
And genuine (made by Samsung) batteries don't have to be (and cannot be) calibrated. There's a fuel gauge chip in the battery which does this automatically.
Some people having issues with the battery report charging to 100%, removing the battery for a few minutes (so the fuel gauge chip doesn't have power for that time) & putting it back in the phone fixes their issues, but even that sounds like voodoo to me.
morespama2k said:
thnx for the correction, what do you think about "Battery Monitor Widget" app? Does its function to calibrate actually work?
Got intrigued by the issue...
Click to expand...
Click to collapse
1. Root your device and install Root Explorer.
2. Use your phone until the phone switches itself off (battery empty)
3. Switch on once more to make sure battery really is 0% (it will then immediately switch off once more)
4. Now, keep switched off (!), plug in charger & leave in charging until 100%
5. When battery is full, switch the phone on, unplug & check if the batter immediately drops 1 or 2 %
6. If battery immediately drops, plug in charger once more (while running phone) & let it charge completely
7. Once charging to 100% is done, don't plug off your charger, open your root explorer, at the top just click mount R/O, then it will set as mounted as R/O.
8.Ok, now open the 'Data' folder.
9.In the 'Data' folder, keep scrolling at the bottom and you will find 'System' Folder.
10.Open the 'System' folder and find 'batterystats.bin'.
11.Now you have to delete the 'batterystats.bin'. How to delete it?
12.Tap the 'batterystats.bin' and it will show the file option, select 'delete'.
13.Once it done, quick the root explorer and use the phone as usual until it switches itself off (battery empty).
14.Please don't charge your phone if the battery are not completely empty.
15.Charge your phone while running phone as usual until it shows 100% battery.
16.make sure that during discharging,don't reboot your phone or the system will create a new batterystats.bin file or if already made, it will get corrupted and you will have to start again from first step
17.Done this in 4 or 5 cycle, i mean the step 15 until step 18.
18.Now enjoy the 'long life' Samsung Battery Life!!
Note: these methods are not permanent and your battery stats may again get messed up any day, then you should repeat the method from first step.
You may try this a few battery tips here.
emoskremo said:
1. Root your device and install Root Explorer.
2. Use your phone until the phone switches itself off (battery empty)
3. Switch on once more to make sure battery really is 0% (it will then immediately switch off once more)
4. Now, keep switched off (!), plug in charger & leave in charging until 100%
5. When battery is full, switch the phone on, unplug & check if the batter immediately drops 1 or 2 %
6. If battery immediately drops, plug in charger once more (while running phone) & let it charge completely
7. Once charging to 100% is done, don't plug off your charger, open your root explorer, at the top just click mount R/O, then it will set as mounted as R/O.
8.Ok, now open the 'Data' folder.
9.In the 'Data' folder, keep scrolling at the bottom and you will find 'System' Folder.
10.Open the 'System' folder and find 'batterystats.bin'.
11.Now you have to delete the 'batterystats.bin'. How to delete it?
12.Tap the 'batterystats.bin' and it will show the file option, select 'delete'.
13.Once it done, quick the root explorer and use the phone as usual until it switches itself off (battery empty).
14.Please don't charge your phone if the battery are not completely empty.
15.Charge your phone while running phone as usual until it shows 100% battery.
16.make sure that during discharging,don't reboot your phone or the system will create a new batterystats.bin file or if already made, it will get corrupted and you will have to start again from first step
17.Done this in 4 or 5 cycle, i mean the step 15 until step 18.
18.Now enjoy the 'long life' Samsung Battery Life!!
Note: these methods are not permanent and your battery stats may again get messed up any day, then you should repeat the method from first step.
You may try this a few battery tips here.
Click to expand...
Click to collapse
Clearing battery stats is pointless. Its just the placebo effect hard at work. Your phone doesn't stay charged any longer if you do this
Sent from my SGS 2 LTE running SkyICS
To reset battery stats just use battery calibration app once calibrated dischrge cmpltly n then chrge until 100% without any break dats enough;-)
Sent from my GT-S5670
Sorry about recall an old thread, but I think is important to say that 4-6 deep discharge/charge cycles are recomend for new batteries by all manufacters. Normally people tend to bypass this procedure leading to use of batteries not completly "formed", thus lack of battery duration.
This process is not that recomended on old batteries as lion batteries don't like deep discharges.
battery % 0..
emoskremo said:
1. Root your device and install Root Explorer.
2. Use your phone until the phone switches itself off (battery empty)
3. Switch on once more to make sure battery really is 0% (it will then immediately switch off once more)
4. Now, keep switched off (!), plug in charger & leave in charging until 100%
5. When battery is full, switch the phone on, unplug & check if the batter immediately drops 1 or 2 %
6. If battery immediately drops, plug in charger once more (while running phone) & let it charge completely
7. Once charging to 100% is done, don't plug off your charger, open your root explorer, at the top just click mount R/O, then it will set as mounted as R/O.
8.Ok, now open the 'Data' folder.
9.In the 'Data' folder, keep scrolling at the bottom and you will find 'System' Folder.
10.Open the 'System' folder and find 'batterystats.bin'.
11.Now you have to delete the 'batterystats.bin'. How to delete it?
12.Tap the 'batterystats.bin' and it will show the file option, select 'delete'.
13.Once it done, quick the root explorer and use the phone as usual until it switches itself off (battery empty).
14.Please don't charge your phone if the battery are not completely empty.
15.Charge your phone while running phone as usual until it shows 100% battery.
16.make sure that during discharging,don't reboot your phone or the system will create a new batterystats.bin file or if already made, it will get corrupted and you will have to start again from first step
17.Done this in 4 or 5 cycle, i mean the step 15 until step 18.
18.Now enjoy the 'long life' Samsung Battery Life!!
Note: these methods are not permanent and your battery stats may again get messed up any day, then you should repeat the method from first step.
You may try this a few battery tips here.
Click to expand...
Click to collapse
how am i gonna do this if my battery % is only 0?even though i chrge long period of time.this happens after i calibrate my battery..im using xperia sola.pls help me.
jopereira said:
Sorry about recall an old thread, but I think is important to say that 4-6 deep discharge/charge cycles are recomend for new batteries by all manufacters. Normally people tend to bypass this procedure leading to use of batteries not completly "formed", thus lack of battery duration.
This process is not that recomended on old batteries as lion batteries don't like deep discharges.
Click to expand...
Click to collapse
Pretty sure this is a myth.
WastedJoker said:
Pretty sure this is a myth.
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Click to collapse
it just re-calculate the battery capacity
Batteries are pure chemistry... This process is valid for every battery known to man. It's not a myth.
mr_clean5953 said:
Clearing battery stats is pointless. Its just the placebo effect hard at work. Your phone doesn't stay charged any longer if you do this
Sent from my SGS 2 LTE running SkyICS
Click to expand...
Click to collapse
Its more for the battery meter to not be off. Also; Motorolas dont like to turn on when they think the battery is dead and needs to charge... so.. bad battery stats can be a big deal.
Google themselves have already said this is a myth and does nothing.
Wayne Tech Nexus
Sl0re10 said:
Its more for the battery meter to not be off. Also; Motorolas dont like to turn on when they think the battery is dead and needs to charge... so.. bad battery stats can be a big deal.
Click to expand...
Click to collapse
Wiping battery stats in no, way, shape, or form affects battery indication. Please do some fact-checking regarding the subject matter at hand rather than perpetuating gross misinformation. The notion that wiping battery stats does anything even remotely useful was clearly and concisely debunked long ago.
The only actual valid posts in this thread have been from mr_clean5953, WastedJoker, and zelendel.The OP itself is riddled with misinformation and following the piss-poor advice given therein will shorten your battry's life.
The same holds true for the advice for 4-6 deep discharge cycles prior to first use. It is totally unnecessary and contrary to what was stated, is not recommended by manufacturers of lithium-based batteries. The individual posting that may have been confused by the fact that it is a recommended practice for nickel-based batteries. Li-ion and lithium polymer batteries see no benefit from "priming" prior to first use. The singular effect of following that misguided advice is a shortened serviceable life of the battery.
Thanks keep up the good work
Sent from my GT-I9300 using xda premium
zelendel said:
Google themselves have already said this is a myth and does nothing.
Wayne Tech Nexus
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Click to collapse
http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer
I would not recommend to do this extensive charge and deep discharge you will destroy your Li-Ion battery.
This is translated by google from the german wikipedia (de.wikipedia.org/wiki/Lithium-Ionen-Akkumulator)
Discharge
The voltage of the Li-ion battery during discharge decreases initially rather quickly reached by the charge voltage to the rated voltage (about 3.6 to 3.7 V) from, but then decreases during a long period of little further. Only shortly before the complete discharge, the cell voltage begins to fall sharply [26] The discharge voltage, depending on the cell type to 2.5V,. These must not be exceeded, otherwise the cell is destroyed by irreversible chemical processes. But many electronic devices switch at much higher voltages, such as 3.0V from.
It is recommended that Li-Ion batteries charge "flat" to (un-), since their lifespan extended way. When a Li-ion rechargeable battery is always discharged from 100% charge to 0% before charging it again, he reached only the minimum number of cycles. Better yet, depending on type, applicable for example, 70% DOD is. This means that the battery pack is at 30% capacity when it is reloaded. Some manufacturers give the cycle life as a function of discharge (engl. depth of discharge DOD) at [27].
In general, high discharge both reduce the rated capacity of a battery, because thanks to the higher voltage drop across the internal resistance of the discharge voltage is reached earlier, as well as reduce the number of cycles due to the higher mechanical and thermal stress. In previous releases is still at an optimum discharge current of 0.2 C (ie a discharge amounting to one-fifth of the nominal value of the rated capacity in Ah) pointed out. With a battery with a capacity of 5 Ah, this would be 1 A. [28]
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Click to collapse
so the best is just fully charge your phone leave it connected to the charger and delete the battery.bin and reboot
greetings
Sebastian
battery still at 0%
eiyen11 said:
how am i gonna do this if my battery % is only 0?even though i chrge long period of time.this happens after i calibrate my battery..im using xperia sola.pls help me.
Click to expand...
Click to collapse
hi. did you find any solution to your problem? after I rooted my xperia neo with gingerbreak, my battery went to 0% and cannot be charged more in my phone. I was able to charge it outside of phone using some universal charger, but anyway in the phone it shows 0% and phone cannot be used without charger connected. thanks for any hint!!
I know this is an older thread, but I still believe that wiping the batt stat ALWAYS made my phone last longer! I would EASILY get 24 hours battery life after wiping and putting new rom on. After a few weeks or better, my batt life would go down to just a couple of hours!! I would use the Wipe Batt Stats in CWM and, VOILA! Back to 24 hours!! I don't understand why anyone could say that it doesn't do anything! Now that CWM took it out, I have to do it manually! I do it about every 3 to 4 weeks and I'm back to 24 hours batt life! Would someone that knows more than I please explain to me why it is a so called myth when it works perfectly for me? Am I just in another world or what? I just don't understand!
Animal99
Animal99 said:
I know this is an older thread, but I still believe that wiping the batt stat ALWAYS made my phone last longer! I would EASILY get 24 hours battery life after wiping and putting new rom on. After a few weeks or better, my batt life would go down to just a couple of hours!! I would use the Wipe Batt Stats in CWM and, VOILA! Back to 24 hours!! I don't understand why anyone could say that it doesn't do anything! Now that CWM took it out, I have to do it manually! I do it about every 3 to 4 weeks and I'm back to 24 hours batt life! Would someone that knows more than I please explain to me why it is a so called myth when it works perfectly for me? Am I just in another world or what? I just don't understand!
Animal99
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Click to collapse
Placebo and logical fallacy. Those are the only reasons why you perceive it to have any effect.
Google's senior Android framework engineer, the individual who is repainted for much of the coding of the operating system and knows more about this than any other, had clearly and concisely debunked the myth of wiping battery stats. The statement that wiping battery stats will affect battery life has the exact same truth value as the statement that our moon is made of green cheese.
There is absolutely nothing contained in the file that you are wiping that is pertinent to battery life or indication. The one and only thing you are wiping is information pertaining to which apps held wakelocks and for how long.
If you want to read up on the subject, you can check out www.batteryuniversity.com and the Google Plus page of Dianne Hackborn.
Sent from my SCH-I545 using Tapatalk 4 Beta
nice info. Well now that's solved my question is, what the heck is the batterystats.bin for then?
i think this will make the battery more accurate more of a calibration ???
No battery_stat from day one
This is a good question as I have an issue with my phone that maybe the result of bad deving on the side of the vendor. My phone does not have a battery_stat.bin file ANYWHERE. And since day one the OS or any other app can keep a good status or stat of the battery. Now does anyone know how I can force the OS 4.2.2 to create a battery_stat.bin file? Thanks