Database Users

How to calibrate p3100 battery

Hi i want to calibrate my p3100's battery...actually m tab 2 was on low battery when i upated it but now the battery is now behaving very oddly..plz help me to calibrate it without rooting the device
Sent from my GT-P3100 using xda app-developers app

kyahaiyaar said:
Hi i want to calibrate my p3100's battery...actually m tab 2 was on low battery when i upated it but now the battery is now behaving very oddly..plz help me to calibrate it without rooting the device
Sent from my GT-P3100 using xda app-developers app
Click to expand...
Click to collapse
Off your tab and full charge and then switch on and use it till it is dead ....
And switch it till battery is completely down ...
And again charge it till 100% without break
Sent from my GT-P3100 using XDA Premium HD app

hemantshah3 said:
Off your tab and full charge and then switch on and use it till it is dead ....
And switch it till battery is completely down ...
And again charge it till 100% without break
Sent from my GT-P3100 using XDA Premium HD app
Click to expand...
Click to collapse
What do you mean by "switch it till battery is completely down" ?
And do we switch off the tab when we fully charge it the 2nd time?

There are free apps on the playstore called "battery calibration" that basically erase your battery config file and allow the ROM to re-learn the battery usage, etc. Very easy to use, charge your battery to 100% - then click the button on the app, it erases the file - you unplug the unit, and use it normally. The software will build a new file
Your unit has to be rooted for this to work, and I have read that it does not really do anything, while others swear by it every time they flash a new ROM.
Do some searching - read some of the posts and details on them, and make your own decision
Good luck,
Regards,

Calibre battery is myth in all modern devices! It only erase battery usage data..

but FYI, its pretty useful on some devices!
i have xperia which has pretty erratic battery life..so clearing battery stats really helps!

Battery issues

Hi guys. Need some help. Very happy with my nexus 4 but, and its a big but, i am having some serious issues with the battery. I am struggling to even get 2 hrs of screen time on my nexus 4. The battery cant be this bad. Is there any way i can see what is exactly causing my battery drain? Sync, nfc is turned off. No widgets r running. Cant understand it. May have to rma this thing.
Help please.
Sent from my Nexus 7 using xda app-developers app

This is probably the cause of your problem.
http://forum.xda-developers.com/showthread.php?t=1999368
Sent from my Nexus 7 using xda premium

didi you root the phone? if so what rom/kernel are you using?
Sent from my Nexus 4 using xda app-developers app

KyraOfFire said:
didi you root the phone? if so what rom/kernel are you using?
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Stock. Not done anything to it
Sent from my Nexus 7 using xda app-developers app

What kind of apps do you have?? Like apps that you think might drain some battery. Also use betterbatterystat app to monitor what's waking your device.
Sent from my Transformer Pad TF300T using xda app-developers app

moghm said:
Stock. Not done anything to it
Click to expand...
Click to collapse
With stock, around 2 hours of screen on time is typical. You can prolong the battery life by disable Google Now, location service, email sync, Playstore auto update, etc. Check your battery stats (try better battery stats from the store) to see if any third-party apps drain your battery.
The better way to do it is to unlock bootloader, root your phone then flash a custom kernel. I recommend franco.Kernel. 3-4 hours of screen on time is typical with franco.

KyraOfFire said:
With stock, around 2 hours of screen on time is typical. You can prolong the battery life by disable Google Now, location service, email sync, Playstore auto update, etc. Check your battery stats (try better battery stats from the store) to see if any third-party apps drain your battery.
The better way to do it is to unlock bootloader, root your phone then flash a custom kernel. I recommend franco.Kernel. 3-4 hours of screen on time is typical with franco.
Click to expand...
Click to collapse
Might as well flash a custom ROM with it if you're going to use a custom kernel IMO. When a new OTA, OP will have problems updating to it because he is using stock + custom kernel + custom recovery.

Here is how to fix your battery problem.
1. Turn off location access in Google Maps settings.
2. Wait about a week for the battery to go through its charge cycle 6-10 times. Let it get as low as possible without the battery dying (this is really bad) and be sure to let the battery sit at 100% for atleast a half hour or so when fully charged.
Each day you will see your battery life increase and when done, you should be getting around 5 hours screen on time.

Well dramatic change in battery life as displayed below. Now after having a read in several topics it seems like a fix is to have the wifi on. How strange as this goes against the ethos of all previous smartphones i have owned i.e. wifi on drains battery. I have uninstalled a few apps and also switched of location access, so to be sure that the fix is wifi related i will switch wifi off the next time i do a full charge and see how that behaves. By the way android os is way down in battery consumption now.
Sent from my Nexus 4 using xda app-developers app

Nexus 7 shutting down in idle state due to battery drain!

My nexus 7 was fully charged and I put it in the rack in the night. Next morning it shut down completely. When I switched it on, it showed battery 0% says 0% the same c thing happened today as well. Its a new device. Any idea??
Sent from my GT-I9300 using xda app-developers app

Can you please show the screen snap of battery usage??

Sure.. Here is the screen shot..
Sent from my Nexus 7 using xda app-developers app

Some app or service is draining your battery. Get BetterBatteryStats to narrow it down.
Sent from my Nexus 7 using Tapatalk HD

I installed battery saver app.. I will check if it can do any good..
Sent from my GT-I9300 using xda app-developers app

Like someone said before it's a rogue app and the only way your going to get the battery drain issue to go away is to figure out which app is doing it and then get rid of it.
Sent from my HTC6435LVW using xda app-developers app

I think the best solution for you is to factory reset or re-install android on your device once.
It will be easier than finding out where is the problem. as screen snap shows most of the battery is drained by "android OS".
It was just my opinion you can take it if you want.
My battery usage. Even though my screen on time was only about 2 hrs most of the battery was drained by the screen. So there music be something very wrong in your case.
I don't know about android virus but that might be an option.
=========================================
Please press the thanks button if you find this helpful

I found that its day dream option got activated some how. I deactivated. Now its working great again.
Sent from my GT-I9300 using Tapatalk 2

*Crosses fingers*
pcoruganti said:
I found that its day dream option got activated some how. I deactivated. Now its working great again.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Gonna follow along and disable my daydream as well since I'm having the same problem you are with it actually draining while on the charger (Stock ROM, Franco Kernel, OEM wall wart with gold tipped USB cable). Tis quite annoying to have to either keep the screen off or power down completely in order for this bad boy to charge...

Battery drains fast!!!! Help!!!

For the past few days I've been noticing that the battery is draining terribly fast, a quick check in the battery details page revealed that my wifi is being used throughout the time my phone is on, even though the wifi is off in settings and quick songs notification panel. How's that possible?. Is it some app which is using the wifi?. But can the app use the wifi which is off? . My S4 is a GT-I9500 model running 4.4.2
Sent from my GT-I9500 using XDA Free mobile app

MidhunCN said:
For the past few days I've been noticing that the battery is draining terribly fast, a quick check in the battery details page revealed that my wifi is being used throughout the time my phone is on, even though the wifi is off in settings and quick songs notification panel. How's that possible?. Is it some app which is using the wifi?. But can the app use the wifi which is off? . My S4 is a GT-I9500 model running 4.4.2
Sent from my GT-I9500 using XDA Free mobile app
Click to expand...
Click to collapse
WIFI is always ON in your example, but it is not the issue you are looking for.
You have to find what application ( or wakelock) is running in background when your graph is in AWAKE state.

Drain? What drain? There is absolutely no drain visible on the screenshot. Your screen uses power. That's normal for a screen to do.

Smart Stay and adaptive (screen mode) drains battery a lot so you should consider disabling it.

I've turned off adaptive display, ill check if it will improve the battery life. Thank you
Sent from my GT-I9500 using XDA Free mobile app

It came down from 95 to 13 within 7 hours, no games, no text's, 4-5 phone calls. Dats it. I once in a while turn on the screen for checking time and browse through my gallery. The charge went down 7% while i was typing this reply
Sent from my GT-I9500 using XDA Free mobile app

MidhunCN said:
It came down from 95 to 13 within 7 hours, no games, no text's, 4-5 phone calls. Dats it. I once in a while turn on the screen for checking time and browse through my gallery. The charge went down 7% while i was typing this reply
Sent from my GT-I9500 using XDA Free mobile app
Click to expand...
Click to collapse
Callibrate it.
If that doesnot help,try another ROM
Thank me if I helped
Sent from my Samsung Galaxy S4 via XDA app.

As u can see from this graph, my phones charge came from 95 to 15% in just 7 hours, with hardly any usage. Is this issue hardware related, could a faulty battery be the culprit. My phone is just 3 months old and still under warranty, should i consider replacing it.
Sent from my GT-I9500 using XDA Free mobile app

MidhunCN said:
As u can see from this graph, my phones charge came from 95 to 15% in just 7 hours, with hardly any usage. Is this issue hardware related, could a faulty battery be the culprit. My phone is just 3 months old and still under warranty, should i consider replacing it.
Sent from my GT-I9500 using XDA Free mobile app
Click to expand...
Click to collapse
Look at your processes and see what is draining the battery.
Sent from my SPH-D710 using Xparent Skyblue Tapatalk 2

Battery behaving strange

Hello, yesterday i bricked my drvice triying to root, then i fixed it by flashing a new firmware, using odin, then i did a full wipe and my battery started going down and up by one percent i tried to do a battery calibration but it stills behave in this way. It goes down and then up. Anyone experienced this?
Sent from my SM-N900 using XDA Free mobile app

Anyone? Y performed a data wipe and then my battery goes down and when I let it settle it goes up by one or two percent
Sent from my SM-N900 using XDA Free mobile app

I flashed alba's ultra lite rom but I think the problem still persists, when I let it settle the battery meter goes up by one or two percent and then it goes down, I don't have bad battery life so far but I don't know why I have this problem... Anyone help please.
Sent from my SM-N900 using XDA Free mobile app

well don't worry i had it 2 when i had N900, it is a normal behavior as your device make an automatic calibration depends on your phone usage, taking an example, if you playing a game, you quit the game, your battery is showing 50% then you put your phone away for a while, you find it 51/52 or even 53 % , it is so normal & to be honest i saw this only on N900, now i have N9005 & this never happened

Thank you very much! I was getting really worried!
Sent from my SM-N900 using XDA Free mobile app