I am running viper rom and i facing some illogical Battery percentage
Any idea how to calibrate it
I ve tried many apps from play store and no results
And i even tried the hard way by pressing the 3 buttons while the phone is off olso no luck
Any idea?
Calibrating the battery on Android devices
Method for rooted devices:
1. Discharge your phone fully until it turns itself off.
2. Turn it on and let it turn off again.
3. Plug your phone into a charger and, without turning it on, let it charge until the on-screen or LED indicator says 100 percent.
4. Unplug your charger.
5. Turn your phone on. It's likely that the battery indicator won't say 100 percent, so plug the charger back in (leave your phone on) and continue charging until it says 100 percent on the screen as well.
6. Unplug your phone and reboot. If it doesn't say 100 percent, plug the charger back in until it says 100 percent on screen.
7. You want to repeat this cycle until it says 100 percent (or as close as you think it's going to get) when you start it up without being plugged in.
8. Now, install the Battery Calibration app attached below and, before you launch it, make sure your battery is at 100 percent again, then reboot.
9. Immediately launch the app and recalibrate your battery stats.
10. Once you've calibrated your battery, discharge it all the way down to 0 percent and let your phone turn off again.
11. Fully charge the battery one more time without interruption while it's switched off, and the Android system's battery percentage will be reset.
Note that all the app does is wipe the accumulated data from the batterystats.bin file giving you a new clean slate to work with. This method is also called, "training the battery" and should be performed infrequently. Maybe once every four months or so.
References:
https://www.androidpit.com/how-to-calibrate-the-battery-on-your-android-device
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Aurelius99 said:
See if this will help you.....
https://www.androidpit.com/how-to-calibrate-the-battery-on-your-android-device
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Click to expand...
Click to collapse
I ll give it a try
I would also note that this would be good to do right before installing a battery monitor app like Gsam or BBS. :good:
comstockload said:
I would also note that this would be good to do right before installing a battery monitor app like Gsam or BBS. :good:
Click to expand...
Click to collapse
I haven't calibrated mine in a long time. Getting ready to do it right now.
How successful was this calibration?
Related
after some quick seach i found there a several methods to calibrate the battery with/without wiping battery stats
Method 1
(http://androidforums.com/hero-all-t...tery-life-performance-your-new-shiny-rom.html)
Battery
· Wipe your battery stats...
1. Allow the phone to discharge completely
2. Boot into recovery (hold Home and press On) plug the phone in if you don't have enough charge to get into recovery
3. Select Wipe > Wipe battery stats
4. Go back and Reboot
5. Leave the phone to do a complete charge (preferably over night)
Method 2
1. You will need to charge the phone to 100% (while the phone is off).
2. Leave charging cable plugged in.
3. Boot into recovery and wipe the battery stats (should be under Advanced).
4. Then boot into Android.
5. Then remove the charging cable.
Method 3
Calibrate your Battery
Calibrate the battery by completely draining it until the phone completely shuts itself off.
Turn the phone on again and let it shut itself off one more time.
Then charge your phone while it is off for over 8 hours.
This will fully charge the battery so that when the Android is turned on, it now sees the battery as full.
It is recommended to repeat this process at least one more time.
You should see a significant increase in your battery’s charge life.
Calibration of a battery can be done at any point and a maintenance calibration is recommended every month.
RECALIBRATION:
A recalibration is mostly needed, when dealing with different kernels (ROOT!). Most custom recovery images provide the option "battery stats wipe" under the menue "Wipe".
Here is how ya do it!
1. Enter Recovery Mode
2. do a full nandroid (or nandroid+ext) backup
3. Enter "Wipe"-Menue
4. do "Battery stats wipe"
5. reboot
Then you just take the steps from a bove to continue:
Method 4 (without wipe stat)
Hi *******, I understand your concern regarding battery life on your Nexus One device. The following steps should significantly extend the battery life on your phone. Please connect the phone to the charger with the phone powered on, and allow the phone to charge until the notification LED is green, indicating the device is fully charged. Disconnect the phone from the charger, and power it off. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the notification LED is green. Disconnect the phone from the charger and power it on. Once the phone is powered completely on, power it off again and reconnect it to the charger until the notification LED is green. Disconnect the phone, power it on, and use it. You need to use this sequence only once. If the issue of battery life on our phone persists, I recommend you contact our HTC accessory department directly.
Tried this and there doesnt seem to have an significant effect.
and now i'm trying method 3 with wiping done first.am i doing it wrong?
None, I charge every night so not bothered so long as battery lasts the day
i tend to have the problem of removing the charger and the batt stats shows fully charge to 96 within 5 min..weird
actually i'm doing the 4th method right now
My phone's battery drains really fast (didn't had this before)
Well I found these steps:
1. Fully drain your battery, play some games, music, etc.. NO PORN!!
2. Let your battery cool for atleast 2 minutes
3. Restart phone to remove residual charge( it will boot only halfway)
4. After the phone shuts down remove battery and let it cool for atleast 2 minutes.
5. Re insert battery and charge your phone in OFF mode.
6. After the phone reaches 100% charge boot into recovery (Power+Home+Volume_up button)then go int o clowckword recovery by applying skingt1980 zip
7. choose advance option .
8. Wipe battery stats
9. Press Power/Back and Reboot your phone
10. Wait till the phone reaches 100% charge and disconnect charger
11. Have a happy battery life !!!!!!!
Question is: is this safe to do without any hard bricking etc ...
GianniDPC said:
My phone's battery drains really fast (didn't had this before)
Well I found these steps:
1. Fully drain your battery, play some games, music, etc.. NO PORN!!
2. Let your battery cool for atleast 2 minutes
3. Restart phone to remove residual charge( it will boot only halfway)
4. After the phone shuts down remove battery and let it cool for atleast 2 minutes.
5. Re insert battery and charge your phone in OFF mode.
6. After the phone reaches 100% charge boot into recovery (Power+Home+Volume_up button)then go int o clowckword recovery by applying skingt1980 zip
7. choose advance option .
8. Wipe battery stats
9. Press Power/Back and Reboot your phone
10. Wait till the phone reaches 100% charge and disconnect charger
11. Have a happy battery life !!!!!!!
Question is: is this safe to do without any hard bricking etc ...
Click to expand...
Click to collapse
It's safe...i don't think battery problems can cause hard bricking....although you need to follow each step carefully to ensure your battery dosen't screw up....
Sent from my Galaxy Young
GianniDPC said:
My phone's battery drains really fast (didn't had this before)
Well I found these steps:
1. Fully drain your battery, play some games, music, etc.. NO PORN!!
2. Let your battery cool for atleast 2 minutes
3. Restart phone to remove residual charge( it will boot only halfway)
4. After the phone shuts down remove battery and let it cool for atleast 2 minutes.
5. Re insert battery and charge your phone in OFF mode.
6. After the phone reaches 100% charge boot into recovery (Power+Home+Volume_up button)then go int o clowckword recovery by applying skingt1980 zip
7. choose advance option .
8. Wipe battery stats
9. Press Power/Back and Reboot your phone
10. Wait till the phone reaches 100% charge and disconnect charger
11. Have a happy battery life !!!!!!!
Question is: is this safe to do without any hard bricking etc ...
Click to expand...
Click to collapse
You cant brick your phone calibrating battery! Just don't do it over and over again cuz then you'll have to replace your battery.
Raol Emostar said:
You cant brick your phone calibrating battery! Just don't do it over and over again cuz then you'll have to replace your battery.
Click to expand...
Click to collapse
Ok thnx will try it out tommorow
that's safe but useless. battery calibration only useful for smart battery, like the one on notebook, but not for dumb battery, like the one in cellphone. smart battery keep battery statistic so it can provide you data like :
- how much electric charge saved in last charge and how much average power usage so you know how much time left before you need recharge
- how much actual battery capacity and initial capacity so you know when to buy new battery
cellphone don't have (and don't need) that features because it's using dumb battery. battery meter in status bar not actually represents the electric charge in battery, but electric voltage of battery.
battery stat in android phone only record power usage for every running process and don't know at all about battery capacity. and you don't need to wipe manually, it's reset every time you fully charge your phone.
That's mean no need overclock.
I don't think it safe
Sent from my Samsung Galaxy S IV
calibrating battery means we will delete some file inside /data partition. it doesn't related to the battery itself. its save, but useless. there's no proof that this method will increase our battery life.
Its completely useless.
It deals with batterystats.bin file in the data/system/ directory
and as a google engineer puts it..
Dianne Hackborn said:
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.
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Click to collapse
I noticed that everytime i rebooted the phone battery level is 1% then later it will return to correct battery level?
anyone experience this? if yes, how did you fix it?
guys I gonna try this
if it works then it should Be a awesome trick for me
This is utterly useless don't try this.
Sent from my GT-S5360B using XDA Premium + Swype
I have ViperX 2.7.0 rom with the stock kernal.
I fully charged, then fully discharged, then fully charged again! I then re-set battery stats anyways.
I took it off charge this morning, was draining a little fast. Was around 85%, I turned it on then off. and bam within like 10 seconds it's down to 40%...
And it's still draining.
Thoughts?
check your battery stats, is there a precipitant drop suddenly?
try disable mobile data and wifi and see if that changes anything.
crislevin said:
check your battery stats, is there a precipitant drop suddenly?
try disable mobile data and wifi and see if that changes anything.
Click to expand...
Click to collapse
In my battery stats.
It powers off, then the gap is blank... THen it starts again halfway down the graph.
okay, That is a precipitate drop.
I am not an expert on this, but before the expert jumping in. I would suggest some experiments
1. if your battery is not empty, use power control widget to turn off mobile data and wifi, let it sit for a hr or two and see if battery drains, and how much. If there is little battery drain, then the background app and data transfer may be the problem for your bad battery drain.
2. charge it to 100%, when it reaches 100%, turn it off and charge for another 15 minutes, turn it on and use it, see if another precipitate drop occur, and if yes, see if they occur at roughly same battery level. I would think if it occurs every time, it may be a hardware problem.
crislevin said:
okay, That is a precipitate drop.
I am not an expert on this, but before the expert jumping in. I would suggest some experiments
1. if your battery is not empty, use power control widget to turn off mobile data and wifi, let it sit for a hr or two and see if battery drains, and how much. If there is little battery drain, then the background app and data transfer may be the problem for your bad battery drain.
2. charge it to 100%, when it reaches 100%, turn it off and charge for another 15 minutes, turn it on and use it, see if another precipitate drop occur, and if yes, see if they occur at roughly same battery level. I would think if it occurs every time, it may be a hardware problem.
Click to expand...
Click to collapse
Thanks for the reply.
I don't have bad drain before this drop.
It's on charge now (from the drop) Going to leave it and see what happens.
install watchdog https://play.google.com/store/apps/...GwsMSwxLDEsImNvbS56b211dC53YXRjaGRvZ2xpdGUiXQ.. to monitor the culprit.
also did you install any new app/game lately, that may be causing problem... i had a similar issue and then i uninstalled the app and all was good...
My phone was all fine, till i flashed Arco's CM10, then my phone started randomly switching off. When started, it showed 0% battery, which was weird as it was always properly charged.
Then i restored my CM9 backup, to check if it was a ROM bug, but I got the same error again.
Attached screenshot for battery stats. Battery problem or Software bug ? Anyone with same bug ?
After flashing the ROM, did you wipe battery stats? If not, that will probably be the cause of the weird readings......
Basically, over time, your phone would have calibrated the battery usage to your previous ROM....when you installed your new ROM (that has different battery usage patterns) your phone is still trying to apply the stats from the old ROM which is what is causing the problems.....wipe your battery stats then complete 3 or 4 full charge - full discharge cycles, and things *should* settle down....
From my Galaxy W on CM9 and CWM6 with Tapatalk 2
Tried that...
But it gets weirder and weirder :/
enarsee said:
Tried that...
But it gets weirder and weirder :/
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Click to collapse
Try the battery calibrator on the playstore.
If it still persist then the problem is in your battery.. suggest you change the battery with the new one
Pressing "Thanks" button will be much appreciated if user's posts useful for you
Or you can try this:
Clear battery stats via CWM. Turn off your phone, and charge it. Wait until the charge indicator shows up on screen. Then turn on your phone and leave it until it's full.
Sometimes when I get batt weird reading, that trick works for me.
In some occasion I found that offline charging and online charging shows different battery level.
when should i plug the cable if use ur trick?
Sent from my Wonders.
Dwama said:
when should i plug the cable if use ur trick?
Sent from my Wonders.
Click to expand...
Click to collapse
Clear the battery stats first via cwm then turn off your phone after that you can plug in your charger.
Dwama said:
when should i plug the cable if use ur trick?
Sent from my Wonders.
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Click to collapse
Just like reddvilzz said above. After charge indicator shows up on screen, turn on your phone (but do not unplug the charge) and leave it until it's full.
Recently my N7(2013) will shut itself down when the battery is low (about 10%) without any warnings, not even the "Shutting Down" dialog that it should show whenever it shuts downs (except for the usual low batt warning when it reaches 15%). After the shutdown, I cant even turn it back on not even the screen, nor the low batt (waiting for charger) screen is showing up until I plug it into a power source the it will show the charging screen and then I can turn it on again.
Its been a few times now, not sure its a hardware or software problem though. It shouldnt shut down when it still has 10% in it right?
Attached is the screenshot of the Battery Usage that shows the battery level shots down to 0% immediately from 10%.
Nexus 7 2013, Stock, Not Rooted
Are you using a battery monitoring program (battery doctor, better battery stats, etc)? If so, look in their settings, to see if they are set to shut down @ 10%...
BSnapp said:
Are you using a battery monitoring program (battery doctor, better battery stats, etc)? If so, look in their settings, to see if they are set to shut down @ 10%...
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Click to collapse
Nah I don't trust these apps so I don't use them. Moreover I'm did not root it so even if I use them they shouldnt have the permission to shut it down
Simple fix
It is an issue I have suffered with a couple of times and it appears we are not alone. It seems that the battery calibration is out of whack. When you charge your nexus up does it stay at 100% for quite a while? I
tried factory data resets amongst other things and nothing worked. I stumbled across a thread with a really simple fix. Turn your tablet off for 2 hours. Then turn it on again. Mine miraculously lost 26% of battery in that time (from 100% where it had been for 8 hours down to 74%). Then it started to use the battery at a normal rate. Working fine now.