yashsingh1/xdaforums huggingface dataset:
[Android Apps and Games] imazehost:
Question

Please tell me something ! I read and it say when the battery go to 100% then click calibration, i have to ask, this i will do every time i charge the phone or only the first time after install this app ?
[Android Apps and Games] Bidalos:
You ONLY do this the FIRST TIME, it means after you installed/flashed a NEW ROM.

Hit the thanks if it helped you.
[Android Apps and Games] marosige:
No because WP works different than android.
[Android Apps and Games] GeekBoy:
cheers for the reply. dont want to tie up an android thread with a WP query but in your estimation could something similar be built for WP given "it works different" and assuming someone had the requiste knowledge to create such an app?

I only ask because we WP7.5 users using homemade ROMS are struggling with battery life and you seem to have some great knowledge about battery calibration (where such insight seems to be seriously lacking in the WP forums). Thx.
[Android Apps and Games] najaboy:
The folks saying this actually does something are too funny... in a sad kind of way. Then again, snake oil would never catch on were it not for the placebo effect.
[Android Apps and Games] SirNuton:
Just saw this post here:

plus.google.com /u/0/105051985738280261832/posts/FV3LVtdVxPT

What do the experts here say?

[Can't post links... But it's more than a look worth, trust me!]
[Android Apps and Games] jeffsf:
Yes, deleting batterystats.bin doesn't "calibrate" the battery in any way.

Look in the Android source if you don't believe it.

BatteryStatsService.java

ActivityManagerService.java

(Mentioned back in this thread already as well as in the thread tags, but the placebo effect is strong with this one...)
[Android Apps and Games] kmetek:
any updates in future needed?
[Android Apps and Games] montsa007:
Thanks for the app, my Nexus has been acting weird lately ;)
[Android Apps and Games] Pfeffernuss:
Why? It does nothing.
[Android Apps and Games] J.Jon:
hey everyone,

I'm having a slight problem with this application.

The application is asking me to "root your device first" when it is already rooted? I have installed a custom ROM, my Boot loader is unlocked and super user is installed without any problems... my handset is the Samsung Nexus S.

Thankyou.
[Android Apps and Games] Smerks:
When you say without break can it be connected to a charger and used but never removed from the charger and have the same effect as just leaving it off and charging it fully?
[Android Apps and Games] Zeuszoos:
Just FYI, what many folks aren't aware of (and what may prevent the 100% charge, I don't know), is that just because your phone/tablet shuts off, that doesn't mean it's fully drained.

I know that on my tablet, after it shuts off, I can restart it and it will even boot up all the way and run for a few minutes. And then, when it shuts off again, I can do the same thing again.

So when mine shuts off, I keep turning it back on and booting it up, until I can't get anything on the screen any more, when I try to turn it on.

THEN AND ONLY THEN, do I plug it in and begin the recharge.

So if someone having problems getting to that 100% charge and they think they have tried draining it all the way, maybe it wasn't actually drained to absolutely zero. And if it is the case that going to a zero charge allows the recharge to get all the way up to 100%, then I would maybe try as I suggested above and see what happens, ya know? It can't make it any worse, right? :)

Thanks for the util!
[Android Apps and Games] deanMKD:
Great App

Tnx for this..

For others: Developer says, that his X8 is damagged, and will wait for while, to get his X8 from repair. :)
[Android Apps and Games] DeucesAx:
Isn't this really bad for the battery though?
[Android Apps and Games] Zeuszoos:
Why would it be? All I know, is that if you need to drain it for something to work properly, then you need to drain it, right?

But if anyone else knows of a reason that it would be bad for the battery, I'm open to it. :)
[Android Apps and Games] DeucesAx:
I am no expert and only repeat what I've read multiple times. I also read that if you discharge your battery below a certain threshold, it's dead and can't be recharged.

I quick google search showed me this, I am sure there are better links out there though

http://electronics.howstuffworks.com/everyday-tech/lithium-ion-battery2.htm
[Android Apps and Games] Zeuszoos:
Thanks. I appreciate the link. I do understand this to be the case. However, this is geared ttoward regular usage habits and is based on the "common" information. For example....

Yes, it is true that this type of battery does not have a memory. However,even this type of battery can develop one if it is *never* discharged all the way and is constantly drained to roughly a certain point.

While this type of battery can be damaged by constant draining to a zero state of charge, the occasional instanceisn't going to do that..

It is not true that this type of battery will die in 2 to 3 years no matter what. In fact, I have a batter of this type here that's approx 12 years old and it still charges up whenever I want it to. And I guarantee you that I will be using this tablet for more than another year.

I also disagree that use or non-use does not make a difference. There are differing ideas on this, but practical information is invariably better than theoretical information and while people do not think of a battery as having moving parts, in reality, it does. What it does not have, is *mechanical* moving parts. But things do move in there and do wear. I'm not going to give a chemistry lesson here, but anyone who knows their chemistry, knows it's true. :) Anyway, batteries, like anything else, can wear from many things.

Again, thanks for the link and I should have been more clear. My statement is about the occasional full drain. This is only done when a ROM change occurs (theoretically). Of course, I'm not including the "ROM of the week on my Droid" crowd, <lol>

IMO, it is good for *every* battery used in devices like this to be fully discharged on occasion, but especially Ni-Cads, which are far more prone to developing a memory than these. But yes, it is possible for these to develop on e as well, over time and with constant "same" level of discharge.
[Android Apps and Games] Archangel22:
I got the message that I have to root my device before I run the app. I messed up, I swear I thought I did root the device when I uploaded the ROM but I mustve forgotten the final step to root the device. Now my battery info is miss leading. Have a messed up my phone? If I root the device now can I rerun this app again or am I toast?
[Android Apps and Games] Archangel22:
Ok I dont know what is wrong with my phone anymore. Ive rooted my phone, ive gotten my instructions from here at step 6) http://xdaforums.com/showthread.php?t=1801106

I installed that app, I can see Superuser listed there, when I ran the battery calibration app i didnt get the message that I have to root the phone but my phone said I was at 22% battery after about 6 hrs thats my battery problem now because I ran this app when I didnt root my phone. So I charged my phone to 100% and when I opened Battery calibration I got the popup again saying I have to root the phone, what do I do? I selected calibrate and got another popup saying its not rooted but it is I know it is.
[Android Apps and Games] apofview:
Help please, I have problem, previusly i had CM7.2, but I flashed stock rom found on net:

S5830XXKPP GINGERBREAD.XXKPP

Battery falls to 60% ten minutes after charging, rooted phone and calibrated battery but to no avail, what is realy strange is that fully charged phone shows 0,004V or 4mV

Help please :(
[Android Apps and Games] saiz136:
Uhhm, you said 4200MV right? How is it my battery is telling me just a single number?

Sent from my Prada 3.0 CM9 Nightly.
[Android Apps and Games] apofview:
Thats also shown in my case, thanks for screenshoot!
[Android Apps and Games] jbd1986:
Nice app! Not sure if it really improved my battery life, but it does seem like the reading could be more accurate.
[Android Apps and Games] angelo2676:
Great job! I really needed this
[Android Apps and Games] najaboy:
Hard to believe that people still believe in snake oil such as this almost a year after the myth of wiping battery stats was clearly and concisely debunked by Google's Android team.

Also, it bears mention that many phones do not charge the battery to 100% because doing so shortens the life of a lithium ion battery.

---------- Post added at 09:24 PM ---------- Previous post was at 09:20 PM ----------

It affects neither the lifespan of the battery nor the indicated charge level.
[Android Apps and Games] mulletcutter:
yes, this does nothing, no better life..just does nothing. stop.
[Android Apps and Games] apofview:
Thanks, it worked:

Rooted phone, battery calibrated, four or five full recharges, about three hours charging, and full discharges, discharging until phone shuts down.

Now battery perform well, voltage is still shown 0,004V, but it doesn't affect battery life.
[Android Apps and Games] najaboy:
You do realize that the one and only thing you have seen is the placebo effect, right? And in all reality, you've actually shortened the serviceable life of your battery.
[Android Apps and Games] bobbyphoenix:
Real or not it helped me. It's an easy way to wipe the battery stats. That's all it's meant to do. I flashed a new ROM, and my battery would only last ten hours. I used this app to wipe the stats, and it recalibrated the limits. Now with the same use, and not changing anything else, I get around 16 to 20 hours. If you say it doesn't work then that's fine. Don't use it. Just please don't tell me what to believe since it did help me. The app is a lot easier to use than booting into recovery to select it through a bunch of options.
[Android Apps and Games] kingofnice:
New battery stats are made on each boot....so calibration is really a myth.

- sent from a flux in space -
[Android Apps and Games] najaboy:
The app does not recalibrate anything. That is not a matter of opinion. It is a matter of fact. Al it wipes is a list of the apps that have been used since the last full charge. The OS does the exact same thing the app does when you unplug the phone after a full charge. Nothing at all in batterystats.bin pertains to charge level. The simple fact is that the myth of wiping battery stats and snake oil apps such as this accomplishing anything is based upon ignorance of both how Android is coded and the internal fuel gauge of Lithium ion polymer batteries.

You can no more calibrate your battery with an app or manually wiping an unrelated file than you can control the weather by varying the color of your shirt from day to day.

All that I have posted is a matter of verifiable fact. The myth of wiping battery stats has long since been clearly and concisely debunked by one of Google's Android team.

---------- Post added at 08:11 AM ---------- Previous post was at 08:06 AM ----------

Source: https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT

Today's myth debunking:

"The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/ directory."

No, it does not.

This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.

That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."

It has no impact on the current battery level shown to you.

It has no impact on your battery life.

Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away.
[Android Apps and Games] bobbyphoenix:
By recalibrating I meant a full charge was only reading at 75% capacity. After deleting the battery stat it now shows a full charge at 100%. Using the app is just easier.
[Android Apps and Games] najaboy:
Once again... neither the app nor wiping battery stats in recovery has any effect on the reported charge level. The debunked myth that it does anything of the sort is rooted (no pun intended) in gross ignorance of how Android works and how lithium ion polymer batteries report their charge level. Reread the direct quote from Diane Hackborn that I posted above for an explanation, direct from the subject matter expert, on why wiping battery stats have no impact whatsoever on reported charge or battery life.

In ascribing any effect to this app or manually wiping battery stats, you have fallen prey to the logical fallacy of equating correlation to causation.
[Android Apps and Games] bobbyphoenix:
I believe you. Just strange that I now get full readings and it's actually full now since I use it. I guess there is some other magic that made it work right, and using the app was just coincidental.
[Android Apps and Games] aylians:
really love this app!!!!!!! it is really easy to use
[Android Apps and Games] apofview:
najaboy are You aware of previous posts, after flashing new rom battery would last 6h max and behaving badly, meaning 2 mins after unplugging charger drop to 80%, after calibration batt lasts 24+ hours, this is My own experience, did You had similar experience, or just heard somewhere?
[Android Apps and Games] najaboy:
Which empirical fact are you disputing?

1) Wiping battery stats either manually or via an app does not affect battery life.

or

2) Full charge/discharge cycles shorten the lifespan of li-ion batteries.
[Android Apps and Games] apofview:
Those are well known facts.

Thats all, I wont go in further discussion.
[Android Apps and Games] regulator21:
OS Error

My Samsung tab 2 7.0 brought up an "error with the OS" message after accidentally did a soft shut down. Now the battery is just draining very fast. I had first thought it was because of the new case I got that has magnets in it, but ive learned that the affect is negligable. Will a calibration take care of this issue with draining? any help is appreciated.

Lance
[Android Apps and Games] mastertempo:
Try this app.I used it and its working good for my phone.And really had the effect.
[Android Apps and Games] najaboy:
Re: [APP] Battery Calibration - EASIEST WAY! - Version 1.2 (10th April, 2011)

I have some oceanfront property in Colorado that you might be interested in if you seriously think this app does anything at all that pertains to battery life or indication. You will literally get the exact same outcome of you simply just slather your phone with ketchup.

Apps of this type are 100% snake oil. That is not an opinion- it is a matter of fact, publicly verified by Google's Android team and widely publicized. It's been known for a good year that the way this app operates has no effect whatsoever on battery life or battery indication.

Then again, some people think that eating green peppers cures cancer. :confused:
[Android Apps and Games] bobbyphoenix:
Re: [APP] Battery Calibration - EASIEST WAY! - Version 1.2 (10th April, 2011)

Again with the snake oil thing? It's been said over and over in this thread. No matter if this app is magic, or it is a placebo, can we all just please stick to what the thread is about? And that is using this app at least seems to help some people. If a person installs it, and they get better battery use that is all that matters. Is it the app? Is it some other system setting being affected by using this app? Don't worry about it. If you don't like it, or when you used it nothing happened, then OK. Don't use it. If anything having this app on the phone certainly won't hurt anything. There is no need for sarcastic negative comments as they do no good at all, and actually make you look dumb, and hurt this great XDA community. Thank you.
[Android Apps and Games] Sloppysod:
Batteries and their charge

Well reading all the posts before it seems there is a lot of confusion.

I experienced what I would call heavy battery drain, from 100% to bout 28% in a about 6 hours of light use, so I began to panic, having just installed the new most recent radio I could find, I was starting to think, nasty thoughts about what I have done, especially as I have read that sometimes you can brick your phone if you try to go back to an earlier radio.

Well enough of that, after my heavy battery drain problem I charged the phone up when I could, and since then the battery as been fine, I am not a heavy user and I get about 30% drain a day which to me is fine.

As for calibrating a battery I thought this was what you done to the old "Nickel Cadmium (NiCd) Batteries" as they had a 'memory' and the advantage of these new "Lithium Ion (Li-Ion) Batteries" they do not. so how can changing a system file make any difference?

I also find that recharging my phone from the mains the charge lasts a lot longer than the when you charge it from you PC - mains gives it more than the measly 500ma your PC provides, modern smartphones need all they can get.!!!:laugh:
[Android Apps and Games] najaboy:
Re: [APP] Battery Calibration - EASIEST WAY! - Version 1.2 (10th April, 2011)

Actually, the perpetuation of gross ignorance and misinformation presented as fact, which is why this app continues to be used, is what hurts a community. A knowledgeable userbase serves for the betterment of xda, whereas a misinformed one serves to its detriment.

From a factual standpoint, this app has ”helped” absolutely no one, as it does nothing pertaining to the developer's claims. Those that have ascribed any effect to this app have done so solely based upon logical fallacy.
[Android Apps and Games] chan.sk:
Tried the app - and unstalled it -

I have a HTC Blackstone with fagyi's [ROM]{NAND} 2013.1.20

I had installed this app and thought I could share my experience with it.

After flashing the ROM, I did some some operational checks (phone, wi-fi, settings) and fully-charge (by switch off and charge about 7 hours with original charger). With device mainly on standby and a few short phonecalls + sms, it lasted about >24 hrs (battery meter on status bar read 30+%). Have this consistently for a couple of days and I thought I could stretch it further and so I installed this app.

I re-charged the phone, installed the phone, and calibrated. Got a successful calibration at 100%. Then I started to notice that the battery level shifts inconsistently with usage. It would show 90% then run down to 86% in less than a minute, then move up again to 90%. Later in the day, it would show 70% and then in less than a couple of minutes shift down to 50%. I thought something might be wrong.

Last night at 6.pm, I charged my phone to 100% and ran the app. Got a successful calibration at 100%.

Did not use the phone the whole night. This morning, at 7.am, I found the phone had powered off.

I switched it on, phone booted to Android, power meter showed 90+%. 5 secs later, it switched off.

I switched it on again and this time the phone vibrated, showed "Smart Mobility" and then powered off.

Tried switching on, nothing happened.

Removed battery and re-inserted then switch on. Nothing happens.

Plugged in charger, orange LED lit.

One minute later, switched off charger and remove cable.

Remove battery and re-insert, switch on. This time phone booted to Android. Power meter showed 90+%.

Ran the app and the battery level got re-calibrated to 80+% after about 5 minutes.

As this is the only app I had installed and ran, I suspect this might be confusing the system, so I uninstalled the app.

I charge the phone with Android running and phone shows "Charging 82%".

This was about 8.am

I thought I will do some research on this unusual behaviour and I came upon to this thread.

I also read the links in this thread:

http://xdaforums.com/showthread.php?t=1444668

and

https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT

Now it is about 9.20 am and my phone is still on charger and reading "Charging 72%".

My assessment is that the physical battery level is about 60+% when the software switched off the phone.

This is because the level would have increased to about 70+% after an hour of charging.

Then something must have been messing up the readings and I am quite sure it is not the Android OS.

I will put the phone through another battery-life trial again with no app installed when it is fully charged.
[Android Apps and Games] Aakashdete:
can I use these with stock rom

can I use these app on my stock 2.3.3 x10i rooted
[Android Apps and Games] jayRokk:
Re: [APP] Battery Calibration - EASIEST WAY! - Version 1.2 (10th April, 2011)

Developers of ROMs even said their selves that this is FAKE..

These kind of apps will only shorten your battery life

Its a placebo and nothing more

Same with "anti virus" apps and "task managers"

If anyone wants better battery

Either - modify your kernel

Or

- find out whats draining your

battery and fix it...
[Android Apps and Games] skirmantas91:
Battery problem! 4mV@100% charge! How to fix?

Hi. I have a problem with my samsung galaxy gio s5660 when fully charged 100% it has only 4mV when it should have 2000-4000mV? It charges very fast and drains event faster! : ( Please help me! how to fix this ?
[Android Apps and Games] jayRokk:
Re: [APP] Battery Calibration - EASIEST WAY! - Version 1.2 (10th April, 2011)

Did you bother to read my post??

This app does NOTHING to your phone!!

Please take the time to read and research... The apps are all fake.. This app probably messed your battery up.
[Android Apps and Games] skirmantas91:
Charges 10 min - last few hours...

You don't get do you? My phone lasted 1-2days before i flashed a rom on dead battery. Now it last 3hours MAX! I can see my phone battery draining and turning off while i do nothing with it. And another thing is that my phone fully charges less than 10 min. So please help to fix this problem. Or i should buy new battery?
[Android Apps and Games] jayRokk:
Re: [APP] Battery Calibration - EASIEST WAY! - Version 1.2 (10th April, 2011)

That looks like a bad battery for me... Ho out and buy a new one... This app isn't going to do anything to your battery life... It'll probably make it worse..
[Android Apps and Games] cet90:
Hi.. anyone can pm me how to get this work? when i start the app.. im just stucked on blackscreen
[Android Apps and Games] najaboy:
The app does not work. Period. The methodology of it has been debunked by Google's Android Framework Engineer. That people continue to attribute any effect at all to this snake oil is not a testament to the efficacy of the app, but rather a lapse of critical thinking skills.
[Android Apps and Games] najaboy:
This app does indeed do harm- it perpetuates ignorance when those who erroneously attribute some effect on their battery to it tout it as something which it is not. The sooner that the gross misinformation that this app is premised upon stops rearing its ugly head, the better off the Android community as a whole is. It is, after all, a verifiable fact that this app, and any that operate in the same manner, have never impacted anyone's battery life or indication in any way, shape, or form.

Additionally, using this app hinders basic troubleshooting of battery drain because the one and only thing it does is delete the list of what has operated on battery since the last full/near-full charge.
[Android Apps and Games] jayRokk:
It actually does hurt phones.

Not only phone but batteries as well.

It shortens their life.

Its FAKE accept it and stop pretending it does good, when clearly it doesn't.