Database Develop

Two battery related questions

Ok first, it seems when I shut my screen off and its not doing anything, the battery seems to just drain. I'll be using it for like 10 minutes and maybe lose 1 or 2 percent of charge, but then I turn the phone back on, it lost like 8 percent. I don't get it.
Second, whenever I completely shut off my phone, it usually looses around 10% of power. Just now, I reset it and lost 20% of the charge. I mean wtf?
If anyone could help me out here and explain this that'd be great.
Sent from my HERO200 using XDA App

Go to menu, settings, about phone, battery, and click on battery use...what does it say? Also, you might want to cycle your battery a couple times to maximize the performance.

If all else fails recalibrate your battery.
http://forum.xda-developers.com/showpost.php?p=6399061&postcount=3546

Dave2582 said:
Go to menu, settings, about phone, battery, and click on battery use...what does it say? Also, you might want to cycle your battery a couple times to maximize the performance.
Click to expand...
Click to collapse
Display 42%
Cell Standby 35%
Wi-Fi 23%
That's it.
Sent from my HERO200 using XDA App

Charging the battery with phone off makes it last longer?

Havent you noticed that when you charge the phone powered off it takes like 40 % more time for the batetry to charge but it also makes the battery last longer? is there any truth in this or im just crazy?

Chad_Petree said:
Havent you noticed that when you charge the phone powered off it takes like 40 % more time for the batetry to charge but it also makes the battery last longer? is there any truth in this or im just crazy?
Click to expand...
Click to collapse
This is a very well know issue related to battery calibration. Take a look at the many calibration threads to learn about bump charging.
Basically, it takes longer with the phone off (or when you pull and put back the battery while charging) because in some cases android was stopping the charge before a full charge.
Try this
Charge your phone to 100% (inside android)
Turn you phone off
Reboot
Pull the battery before it boots
Wait for the ?
Put the battery back in and notice the %
If it says 60%, then you had 40% of your battery not being charge.
If you leave it in that spot and wait for it to go to 100%, your battery will be better calibrated.
Sent from my Milstone running CM7

Caz666 said:
This is a very well know issue related to battery calibration. Take a look at the many calibration threads to learn about bump charging.
Basically, it takes longer with the phone off (or when you pull and put back the battery while charging) because in some cases android was stopping the charge before a full charge.
Try this
Charge your phone to 100% (inside android)
Turn you phone off
Reboot
Pull the battery before it boots
Wait for the ?
Put the battery back in and notice the %
If it says 60%, then you had 40% of your battery not being charge.
If you leave it in that spot and wait for it to go to 100%, your battery will be better calibrated.
Sent from my Milstone running CM7
Click to expand...
Click to collapse
and this hasnt been fixed even with gingerbread? yeah i have gotten the message saying it has 60 % :/

I pay no attention to the battery meter anymore. I've found that it just reads low. It's not that it doesn't get a fully charge, the phone can't read the level correctly. I tried draining the battery once by playing an episode of Top Gear with the screen on full brightness. The phone said the battery was at 5% but the video kept playing for another 1.5 hours.

baoli said:
I pay no attention to the battery meter anymore. I've found that it just reads low. It's not that it doesn't get a fully charge, the phone can't read the level correctly. I tried draining the battery once by playing an episode of Top Gear with the screen on full brightness. The phone said the battery was at 5% but the video kept playing for another 1.5 hours.
Click to expand...
Click to collapse
noup , when my batetry says low , it dies pretty quickly

Go with mV.
4200mV=100%
3200mV=0%
Battery monitor widget kicks ass

zeppelinrox said:
Go with mV.
4200mV=100%
3200mV=0%
Battery monitor widget kicks ass
Click to expand...
Click to collapse
mV?

Chad_Petree said:
mV?
Click to expand...
Click to collapse
millivolt. there are other ways to read out this value... I'm using osmonitor, since it's installed anyways

problem with battery please help

Hey guys
I have problem with battery
Now my battery 40% when left note sleep up to 3h i back i see battery 41%
I saw it with custom roms and stock i tried all kernels
And problems sometimes appear and sometimes no i tried wipe battery and
No diffrent
I want to destroy this problem for ever
Thanks alot.

No One Know How i can fix it ?

I don't think it's a bug.
I'm pretty sure it's just the way it estimates your battery percentage.
Here's how I think it works.
If you've been using your phone for, say, 3 hours straight, your phone calculates your drain rate like batt%/min or something.
And judging by how long you've used it for, it will estimate the approximate percentage of battery remaining.
When it's on deep sleep for a while, not only is the clock rate different (probably <200mHz at deep sleep), but the drain rate will change too.
The phone will re-estimate the battery percentage according to that new rate, hence the different (often higher) battery percentage, after a period of inactivity.
I could be completely wrong, but that's how I see it.

Thanks for ur Idea Brother

Any one have other Idea ?

I didnt get your problem....
Is your battery draining fast???you mean to say this???
Sent from my GT-N7000 using xda app-developers app

shivg86 said:
I didnt get your problem....
Is your battery draining fast???you mean to say this???
Sent from my GT-N7000 using xda app-developers app
Click to expand...
Click to collapse
Hmmm i mean My Battery sometimes up 1% with itself

Charge your battery overnight n Wipe your battery stats in recovery.
Sent from my GT-N7000 using xda premium

little-vince said:
I don't think it's a bug.
I'm pretty sure it's just the way it estimates your battery percentage.
Here's how I think it works.
If you've been using your phone for, say, 3 hours straight, your phone calculates your drain rate like batt%/min or something.
And judging by how long you've used it for, it will estimate the approximate percentage of battery remaining.
When it's on deep sleep for a while, not only is the clock rate different (probably <200mHz at deep sleep), but the drain rate will change too.
The phone will re-estimate the battery percentage according to that new rate, hence the different (often higher) battery percentage, after a period of inactivity.
I could be completely wrong, but that's how I see it.
Click to expand...
Click to collapse
This might right ... I event experienced ..battery almost empty ..after restart the phone ..1 bar become 2 bars on battery indication ..

Portgas-D-Asce said:
Hmmm i mean My Battery sometimes up 1% with itself
Click to expand...
Click to collapse
If Battery drain is your problem, try this-
Discharge your battery till it switch off automatically
Now connect your charger in switch off mode and charge it till the full.
Now after recharging it fully, unplug your charger from the socket.
Go to recovery mode and go to advance,wipe battery stats and restart your device.
HIT THANKS BUTTON,AS IT IS MANDATORY.

shivg86 said:
If Battery drain is your problem, try this-
Discharge your battery till it switch off automatically
Now connect your charger in switch off mode and charge it till the full.
Now after recharging it fully, unplug your charger from the socket.
Go to recovery mode and go to advance,wipe battery stats and restart your device.
HIT THANKS BUTTON,AS IT IS MANDATORY.
Click to expand...
Click to collapse
Brother my Battery Not Drain its Incrase 1% with itself on deep sleep

Battery dropping from 12% to 0% in a few seconds

My battery is dropping from 12% to 0% in a few seconds and phone shuts down.
See attached screenshots from battery graph and better battery stats.
During normal use until 13% discharge is normal.
Any help is appreciated.
Thanks

I would like to see some feedback about this, as well. I'm experiencing the same thing.

junta_mpb said:
I would like to see some feedback about this, as well. I'm experiencing the same thing.
Click to expand...
Click to collapse
I have google around but no real solution.
I have tried calibrating battry, let's see what happens

Battery calibration is something you should do!
If it doesn't work try different FTF Files for your device or even use PC Companion to repair your device...
If you could try custom roms it would be better because if the problem still remains it means there is a hardware problem(Probably battery replacement will be needed).

comeon, no one with a real good idea about source of the problem and its solution?

thegios said:
comeon, no one with a real good idea about source of the problem and its solution?
Click to expand...
Click to collapse
use your phone untill it turns off - boot into recovey with power then volume up
charge your battery while on recovery twrp from 0 to 100 ( leave it just to charge it may take up to 5 hours )
test again if worked fine on discharge from 12 to 0 so u have a kernel problem
you may change the kernel or try another rom

mimotata said:
use your phone untill it turns off - boot into recovey with power then volume up
charge your battery while on recovery twrp from 0 to 100 ( leave it just to charge it may take up to 5 hours )
test again if worked fine on discharge from 12 to 0 so u have a kernel problem
you may change the kernel or try another rom
Click to expand...
Click to collapse
Ok, I have tried all possible methods
- using an app called BatteryCalibration
- using the charging mode suggested above
- deleting manually the battery stats file
Phone still goes from 12% to 0% in seconds and shuts down.
I DO NOT BELIEVE IT IS A KERNEL PROBLEM because I have the original .157 sony ROM, just rooted with a few crapware disabled
I DO NOT BELIEVE IT IS A BATTERY PROBLEM because I have tried the following: when phone goes from 12% to 0% and shuts off, I plug it in, wait that it charges for say 10 minutes, turn it on, battery is at 4%, unplug it, phone runs for at least 40 minutes (it should shut down).
So it really seems to be a bad reading...

Hmm, i have same problem with battery , when battery is 32-35%, screen off dropping to 22-25% in some minute, but wheni test with screen on 32-35%, don't have problem
It difficult question to answer

bibica said:
Hmm, i have same problem with battery , when battery is 32-35%, screen off dropping to 22-25% in some minute, but wheni test with screen on 32-35%, don't have problem
It difficult question to answer
Click to expand...
Click to collapse
It is not the same problem.
My problem is that when the phone (after several hours, also of intensive use) reaches 12% in a few seconds it drops to 11% then suddenly to 0% and it shuts down.
Then, If I charge it for 10 minutes, unplug and turn it on, battery is at 4% and lasts for another hour: this should prove the problem is not the battery but its reading.
And deleting batter stats is useless, besides this being a myth...

thegios said:
My battery is dropping from 12% to 0% in a few seconds and phone shuts down.
See attached screenshots from battery graph and better battery stats.
During normal use until 13% discharge is normal.
Any help is appreciated.
Thanks
Click to expand...
Click to collapse
same here
first screenshot is the normal of the battery
second screenshot when it starts to do the problem not a big problem
third pic is the problem big problem ( fast drain and fast charge )
also the fourth pic is how my battery last from 100 to 15 about 6 hours hardcore usage and after that 2 or 3 mins max 0 :/
i dont have this problem on sony stock rom 108 or 157 seems fine no fast drain or fast charge just on any other rom that problem happenes
iam now on cm11 phone model c6902

mimotata said:
same here
first screenshot is the normal of the battery
second screenshot when it starts to do the problem not a big problem
third pic is the problem big problem ( fast drain and fast charge )
also the fourth pic is how my battery last from 100 to 15 about 6 hours hardcore usage and after that 2 or 3 mins max 0 :/
i dont have this problem on sony stock rom 108 or 157 seems fine no fast drain or fast charge just on any other rom that problem happenes
iam now on cm11 phone model c6902
Click to expand...
Click to collapse
I do have original z1 stock .157 rom and I while ago had not this problem.
And yes, it seems that from 100% to 12% it takes ages even with heavy use then suddenly in 3 seconds drops to 0%

thegios said:
I do have original z1 stock .157 rom and I while ago had not this problem.
And yes, it seems that from 100% to 12% it takes ages even with heavy use then suddenly in 3 seconds drops to 0%
Click to expand...
Click to collapse
i tested every kernel out there for cm11
it is about bad reading from battery
but as no offline charge on cm roms
so no calibiration

So what is the solution?
This morning it dropped from 42% to 21% in a minute and then to 0% in seconds. I put charger on, left it charge 3 minutes, turned it on, batt was at 5%, unplugged and phone remained awake for 20 minutes during use
There must be a way... Full reset maybe?

thegios said:
So what is the solution?
This morning it dropped from 42% to 21% in a minute and then to 0% in seconds. I put charger on, left it charge 3 minutes, turned it on, batt was at 5%, unplugged and phone remained awake for 20 minutes during use
There must be a way... Full reset maybe?
Click to expand...
Click to collapse
tested everything wiped and fresh install still the same

mimotata said:
tested everything wiped and fresh install still the same
Click to expand...
Click to collapse
I will try removing sd card, even though I do not see why that would be a problem

Same problem.
Tried
>PC Companion Repair
>Batt calibration
>flashing Stock rom using flashtool
Still drops to 0% when it reach 50%
Maybe a battery problem?
We experience it all by now maybe because our z1 is more than a year old and battery maybe affected?
Sent from my C6903 using XDA Free mobile app

noteandfound said:
Same problem.
Tried
>PC Companion Repair
>Batt calibration
>flashing Stock rom using flashtool
Still drops to 0% when it reach 50%
Maybe a battery problem?
We experience it all by now maybe because our z1 is more than a year old and battery maybe affected?
Sent from my C6903 using XDA Free mobile app
Click to expand...
Click to collapse
Try this: when it reaches 50% and shuts down, while phone is off, plug it in, wait 10 minutes, turn it on and unplug it. Phone should be at 8% or so, and will last normally now.

thegios said:
Try this: when it reaches 50% and shuts down, while phone is off, plug it in, wait 10 minutes, turn it on and unplug it. Phone should be at 8% or so, and will last normally now.
Click to expand...
Click to collapse
Yeah from playing like 30 minutes of games it will shuts off. But i wait for my phone to cool down for like 10 minutes then turning it on , i now have 45% battery but will drain badly again even for like using the camera.

nikkorob said:
Yeah from playing like 30 minutes of games it will shuts off. But i wait for my phone to cool down for like 10 minutes then turning it on , i now have 45% battery but will drain badly again even for like using the camera.
Click to expand...
Click to collapse
Same to me.
We all experience the same thing.
Anyone consulted Sony Service Center regarding this?
Sent from my C6903 using XDA Free mobile app

thegios said:
Try this: when it reaches 50% and shuts down, while phone is off, plug it in, wait 10 minutes, turn it on and unplug it. Phone should be at 8% or so, and will last normally now.
Click to expand...
Click to collapse
noteandfound said:
Same to me.
We all experience the same thing.
Anyone consulted Sony Service Center regarding this?
Sent from my C6903 using XDA Free mobile app
Click to expand...
Click to collapse
sir are u Filpino ? one of d users of this server have suggested me to bring my unit to the sony center. it seems my phone's battery have already expanded. That same thing have made my phone's backcover to open (on the middle part where the battery is located).

Z1 Turns off at 50% battery

From a while my mobile started turning off upon reaching 15% battery or something like that but it didn't just stop there the percentage continued to increase and now it turns off at 50% and sometimes more than 50 and I don't know what to do to fix this .

phonexhero said:
From a while my mobile started turning off upon reaching 15% battery or something like that but it didn't just stop there the percentage continued to increase and now it turns off at 50% and sometimes more than 50 and I don't know what to do to fix this .
Click to expand...
Click to collapse
You need new battery mate.

marko.dnb said:
You need new battery mate.
Click to expand...
Click to collapse
so this is no calibration problem or fake charging ?

phonexhero said:
so this is no calibration problem or fake charging ?
Click to expand...
Click to collapse
No had the same problem on 3 phones, replaced battery and it was good as new :highfive:

phonexhero said:
From a while my mobile started turning off upon reaching 15% battery or something like that but it didn't just stop there the percentage continued to increase and now it turns off at 50% and sometimes more than 50 and I don't know what to do to fix this .
Click to expand...
Click to collapse
I also faced this same problem. Now it's shutting at 50% and eventually it will increase. I took the mobile in the service center and checked that the battery is bloated. So I asked them to replace the battery and check on the motherboard.