Develop Bugs

Android battery calibration, what are other people experiencing except me?

Well members,
I really want to know who has their battery percentage the same as in winmo. I know it has a issue with the battery driver, but still i am curious.
My battery.capacity=4462 Units.
Current percentage in Android 41% at the moment
Current Units in Dmesg 2988Units
After restart in Winmo it says 53%
If I calculate this, (2988/4462)*100= almost 67%
Someone knows what i am doing wrong?
PHP:
I will charge my battery again tonight, plug usb out, read units, change Units again in default.txt. Then I will keep for myself updates trough the day of the current data. Will post again tomorrow with updates.
Hope to hear what other people are experencing
Don't blame my poor english, Firefox English dictionary isn't downloaded/installed yet

battery
Yeah is really not understandable of how to calibrate the battery, iv been trying it for the past 2 weeks...and i still have not get it right! well..i got 4320

My battery reports completely wrong in android, to the point where it's 30-50% left then dies as it's really flat!

Hmm,
Code:
Try to use this line in default.txt if you don't got it yet
board-kaiser-battery.battery_capacity= ****
**** stands for the unit you get in with Dmesg in terminal of android after a full charge.
I can say that doesn't even is correct for me.
But I Tried another value. I read (translated) on japanese forum dat you have to put the mAh instead of units.
So I tried with 1350 (Of my Kaiser160).
Now my android shuts of when it's 15% instead of 59%. He also said something like, try to double the value. I am testing now with the value 2700
You guys should try :O
I've to say, after changed to 1350, i had a more realised idea how android does with the battery. I can say that android sucks more battery than winmo.

battery
assangflexx said:
Hmm,
Code:
Try to use this line in default.txt if you don't got it yet
board-kaiser-battery.battery_capacity= ****
**** stands for the unit you get in with Dmesg in terminal of android after a full charge.
I can say that doesn't even is correct for me.
But I Tried another value. I read (translated) on japanese forum dat you have to put the mAh instead of units.
So I tried with 1350 (Of my Kaiser160).
Now my android shuts of when it's 15% instead of 59%. He also said something like, try to double the value. I am testing now with the value 2700
You guys should try :O
I've to say, after changed to 1350, i had a more realised idea how android does with the battery. I can say that android sucks more battery than winmo.
Click to expand...
Click to collapse
Hi there, well iv tried the above instructions, but i found out something is strange, i deleted the batterystats.bin and then make sure that the board-kaiser-battery.battery_capacity= 1400 (my battery is 1400) i adb pushed it to my device....but strangely when i reboot....it changes back to 2700 automatically....i think this is the reason why we still cannot calibrate our battery for now...since as soon as my battery reaches down to 20% and suddenly 4% then shuts off...
Perhaps do you guys think that to keep our kaiser's stanbby time longer rather buy an external battery charger and make sure that battery is charged up fully.so that we can utilize the battery fully.

i think for now we should just try an carry our chargers with us say to work or school..and charge it over night....
Usually i wouldnt charge my phone for bout 2 days but it will last..but now i realieze its a must if ima use android..
Cheers

i never trust the battery status when charging.
if I am looking for a full charge I wait until dmesg reports a charge of less than approx 30mA. if it shows charge at 100/100 and it still is showing over 100mA then it is not done charging.
also if it is showing less than 30mA and a charge of less than 100/100 it really is done charging. don't wait for 100/100 if it is done charging.
as far as battery usage is concerned, one thing to not as far as a difference between winmo and android:
winmo shuts down many services when sleeping.
such as in winmo if you are playing music and it goes to sleep, music shuts off.
and same for wifi.
android doesn't seem to shut of anything except the screen.
maybe there is settings for what is to be run while sleeping.
I had a program in winmo that allowed you to turn on or of services during sleep.

mnjm9b said:
i never trust the battery status when charging.
if I am looking for a full charge I wait until dmesg reports a charge of less than approx 30mA. if it shows charge at 100/100 and it still is showing over 100mA then it is not done charging.
also if it is showing less than 30mA and a charge of less than 100/100 it really is done charging. don't wait for 100/100 if it is done charging.
as far as battery usage is concerned, one thing to not as far as a difference between winmo and android:
winmo shuts down many services when sleeping.
such as in winmo if you are playing music and it goes to sleep, music shuts off.
and same for wifi.
android doesn't seem to shut of anything except the screen.
maybe there is settings for what is to be run while sleeping.
I had a program in winmo that allowed you to turn on or of services during sleep.
Click to expand...
Click to collapse
yep...you are right....maybe we should just focus on dmesg for now...by the way, do you guys have the same problem as i have...20% then suddenly drops to 4% then shuts off?

twinklesam123 said:
yep...you are right....maybe we should just focus on dmesg for now...by the way, do you guys have the same problem as i have...20% then suddenly drops to 4% then shuts off?
Click to expand...
Click to collapse
i dont have that problem..however today, i charged to 100 percent and talk to my gf on the phone for about an hour..it went down to about 40 percent..i set it down and didnt touch it for about 20 minutes..and it went up to about 70 percent..very weird

Yes, i can tell you, in the settings under connection (i think, i have dutch android language) you can define a setting that wifi goes to sleep after your screen sleeps.
Code:
Also,best way to use android is that you have to
1. fully charge your phone in android and keep the powercable on it,
2. look in dmesg for the units. when te units aren't getting bigger, than that's the last one that is charged.
3. write down or do something with your mind :D
4. restart to winmo, KEEP POWERCABLE ON
5. change and/or put a line to your default.txt "board-kaiser-battery.battery_capacity= ****"
change **** to your units you have written down
6. after you changed units, start to android.
But still it doesn't is good yet. I experienced that 1350 value is the most effective one. When android said 15%, i tought lets restart and look what winmo says. winmo was at 1%.
Also, i was a little cocky and without 100% battery i started android. I can say, it took ages that 100% was changed to 99%. Also you never know when battery is going to die
Maybe someone can do something with this.

Battery
i think for now...we should just look at the charge in dmesg....which is the most accurate telling for now...

twinklesam123 said:
Hi there, well iv tried the above instructions, but i found out something is strange, i deleted the batterystats.bin and then make sure that the board-kaiser-battery.battery_capacity= 1400 (my battery is 1400) i adb pushed it to my device....but strangely when i reboot....it changes back to 2700 automatically....i think this is the reason why we still cannot calibrate our battery for now...since as soon as my battery reaches down to 20% and suddenly 4% then shuts off...
Perhaps do you guys think that to keep our kaiser's stanbby time longer rather buy an external battery charger and make sure that battery is charged up fully.so that we can utilize the battery fully.
Click to expand...
Click to collapse
try to put these lines in sysinit.rc:
#battery patch
chmod 777 /sys/module/board_kaiser_battery/parameters/battery_capacity
write /sys/module/board_kaiser_battery/parameters/battery_capacity 1400

I'v changed it to 1350. It was charged properly and drop to 4% from ~10%, so nearly ok. But when connected charger it's full in about 10 minutes????
Edit: After dischargine (5 minutes), it charges probably normally.

working...
tiagoclc said:
try to put these lines in sysinit.rc:
#battery patch
chmod 777 /sys/module/board_kaiser_battery/parameters/battery_capacity
write /sys/module/board_kaiser_battery/parameters/battery_capacity 1400
Click to expand...
Click to collapse
Thanks! i think it worked now!my battery now runs down normally...

How long everybody using your Kaiser battery? I can use 3 days in Winmo but it could not exceed 1,5 day in Android (NAND) :-(

I have the same as you.
But i stopped using Android on ma phone. I'am out with Winmo, don't want to use it anymore. And android dies just quickly.
Am using now en Nec N343i
Will try android again when new updates or new kernel arrives

yo ppl...now most of the time i can figure this type of stuff out....but this time im kinda lost....i edited the sysinit.rc file....also the battery_capacity file.....im running poly 2.1g on NAND but after i reboot the phone....does nothing.....any tips or site with a little more info...?? thanks in advanced for any help

Battery problems on polymod 2.1 gamma
tiagoclc said:
try to put these lines in sysinit.rc:
#battery patch
chmod 777 /sys/module/board_kaiser_battery/parameters/battery_capacity
write /sys/module/board_kaiser_battery/parameters/battery_capacity 1400
Click to expand...
Click to collapse
Hi,
I have polymod 2.1 gamma with all updates (UPDATE 15 Mar 2010, UPDATE 18 Mar 2010, UPDATE 23 Mar 2010) and the kernel from "ponack.net/poly/BT_Update/" installed on NAND (Tytn II). It runs really smooth, but I have a problem with my battery.
I have written the battery patch from tiagoclc in the sysinit.rc before I installed on Nand (but with value 1350 from my battery). But is this enough or do I have to delete a *.bin file from battery? I hope someone can help me with a description.
I have seen a fix for "Myn's Warm Donat" here:
forum.xda-developers.com/showpost.php?p=6243182&postcount=306
Is there also a fix for Eclair 2.1 available? Or does someone have a "complete" description for this battery problem? My Batterie is a few hours on 100% with this battery patch and I can not charge it. But this could not be true.
I hope someone can help me.
MT

Maybe kernel problem.
I'm experiencing the same problem as everyone.
Lately my battery suddenly drops from 100% to 4%.
When I put to charge, it reaches 100% very fast. Should reach only 5%
I think it can be a problem in the kernel.
Now, i'm trying to solve it. If I find something I'll share with you
I can not determine which kernel brought the problem...
23/04 - 16:16 (GMT-3 - Rio de Janeiro) - Trying an old kernel
23/04 - 17:00 - Nothing. But came to the conclusion that the problem is with the battery.
Battery really "thinks" its 100% charged, since it accepts flash a nbh without the need of the phone is charging. And this only happens when the battery is at least 50% charged...
(sorry about my english. I'm brazilian and still learning english)
Some threads and posts about battery:
http://forum.xda-developers.com/showthread.php?t=661588
http://forum.xda-developers.com/showthread.php?t=644453
http://forum.xda-developers.com/showpost.php?p=5599516&postcount=33
We must concentrate everything in one thread!!!
We have to use search

I have set 1350 in sysinit.rc and it seems to be ok, but before every charge I have to reboot to charge it fully. then it discharges nearly fine - there are some fluctuations beetween 2-3-4 percent.

[Q] mV of battery with less than 5%

just wondering what everybody else is showing for your remainder mV with 5%left of battery. you can use battery calibrator from the market or run the Die Hard script with script manager. The reason im asking is because when i have less than 5% its showing 3625-3615 mV which, i believe, should show 40% left.
also does anybody know the standard lowest mV for our phone to have 5% battery

Bump, I have the same problem

blchff04 said:
just wondering what everybody else is showing for your remainder mV with 5%left of battery. you can use battery calibrator from the market or run the Die Hard script with script manager. The reason im asking is because when i have less than 5% its showing 3625-3615 mV which, i believe, should show 40% left.
also does anybody know the standard lowest mV for our phone to have 5% battery
Click to expand...
Click to collapse
Sounds about right. You're not going to be able to drop to 0 V because that means you have a dead battery. The phone needs a certain amount of minimal current to function.
If you are asking about mah on the other hand... that's different.

[Q] About battery calibration - setting new Full40

Hi everyone, finally I managed to calibrate my aged battery of HTC Desire. Anyway I'm stuck at this point:
theGanymedes said:
ADDENDUM:
Since the battery age value is somehow rewritten to 94% when you charge your phone off, I recommend editing the full40 value accordingly. In order to do that, first start and successfully complete a learning cycle; and then reboot (or power on/off). After this, you shall see the age value of your battery (say XX%).
Now, you should calculate "real" mAh value using this:
Code:
Code:
REAL Capacity = "Real" Full40 Value (1452 in Stock etc.) x Age Percentage (0.XX)
Now, we must recalculate the "fake" Full40 value and write it to EEPROM, so that our battery will be always calibrated (even charged off):
Code:
Code:
"Fake" Full40 = Real Capacity / 0.94
Write this value to Full40 assignment area in the Learn Prep app in the application, press Save and you're done.. Congrulatulations, you just calibrated your battery, even when it's charged off.
NOTE: Since some internal calculations also use Full40 value, I recommend you to write rounded to next value, rather than truncated.
Click to expand...
Click to collapse
That is simple math
But I want to make sure I'm not doing wrong - then being obliged to recalibrate again.
My real full40 value is 1452mAh, and Age% is 100%
Real capacity = 1452 x 0,100 = 145,2 ==> Is that so?
Fake Full40 = 145,2 / 0,94 = 155
Now I shall go to the LearnPrep tab and set that 155 value to Full40. Is that possible to set such a low value?
I'm sure I'm mistaking some calc :|
I guess the right calc for Fake Full40 is (1452x100)/94 = 1545.
Tell me please, and sorry for the nobbish question.
And thanks in advance.

Also I can't get this:
theGanymedes said:
Capacity (to set) * 15 (Rsns value) / 6.25 (constant) = AC register value
Click to expand...
Click to collapse
Where the hell do I know that "Capacity (to set)" number?
Maybe I am stupid, maybe my english comprehension is not perfect, maybe both.
But please, help me!

I think these LiION batteries reserve a certain percent of power to stop them fully discharging as that is quite bad for Li-IOn.
So for example, when you see 1% battery power there might actually be 6% left but the phone will power off to avoid damaging the battery.
I used an app on the app store to recalibrate my battery [Battery Calibrator
Jon Richards] based on a thread here somewhere. It worked and I went from gettign about 8 hours where the phone would power off to about 16 hours and I'd still have 10 - 20% left.
However, I think I might not have followed the instructions correctly and allowed the battery to discharge too much, damaging it. Last week my battery died - this could of course be coincidence but err on teh side of caution when playing around with Li-ion thresholds.
I may have also taken other steps - I can't remember - the whole adventure of prolonging battery life was quite a chore

Properly calibrating battery which gives you accurate readings and more battery life is
Follow these steps
1. Switched On phone charge till 100% and wait 1 hour more don't unplug charger, after that time unplug charger and power off your phone.
2. Charge your phone switched off till 100% then unplug charger
3. Switch on phone and again follow step 1, then unplug charger and reboot into recovery/advanced settings/ wipe battery status. Now turn on your phone again and follow step 1 and that's all.
Your battery will be properly calibrated enjoy friends
Sent from my GT-S5660 using xda premium

rakijaman said:
Properly calibrating battery which gives you accurate readings and more battery life is
Follow these steps
1. Switched On phone charge till 100% and wait 1 hour more don't unplug charger, after that time unplug charger and power off your phone.
2. Charge your phone switched off till 100% then unplug charger
3. Switch on phone and again follow step 1, then unplug charger and reboot into recovery/advanced settings/ wipe battery status. Now turn on your phone again and follow step 1 and that's all.
Your battery will be properly calibrated enjoy friends
Sent from my GT-S5660 using xda premium
Click to expand...
Click to collapse
http://www.google.com/url?sa=t&sour...1oCIBA&usg=AFQjCNHUrHK2SdcwIXgUdqFMed-PZcDJ7Q
i think u best read this
Sent from my HTC Desire

100% age after successful calibration
KengoNakamura said:
Hi everyone, finally I managed to calibrate my aged battery of HTC Desire. Anyway I'm stuck at this point:
That is simple math
But I want to make sure I'm not doing wrong - then being obliged to recalibrate again.
My real full40 value is 1452mAh, and Age% is 100%
Real capacity = 1452 x 0,100 = 145,2 ==> Is that so?
Fake Full40 = 145,2 / 0,94 = 155
Now I shall go to the LearnPrep tab and set that 155 value to Full40. Is that possible to set such a low value?
I'm sure I'm mistaking some calc :|
I guess the right calc for Fake Full40 is (1452x100)/94 = 1545.
Tell me please, and sorry for the nobbish question.
And thanks in advance.
Click to expand...
Click to collapse
I also calibrated successfully and age was 100% .. so according to fake full40 formula it needs to be reset as 1452/0.94 = 1545 ;
can you answer what you did or how you approached further .. because 1545 does not seem to be proper value to be set
kindly reply...

Huge battery drain (i think)

Is it normal that i've already lost more than 70% in 3 hours!
But i have to say that im using my phone realy hard those 3 hours: mobile data on, playing games, surfing on the internet, download few apps
Im on stock rom
Sent from my HTC One X using xda premium

Wow thats a lot, but the Tegra 3 One X is a power hungry beast... It might just be normal.
Its hard to asses if something is wrong from a distance, you might wanna try an app like Better battery Stats to check whats responsible for this battery drain.

tommeke19 said:
Is it normal that i've already lost more than 70% in 3 hours!
But i have to say that im using my phone realy hard those 3 hours: mobile data on, playing games, surfing on the internet, download few apps
Im on stock rom
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
If you had the screen on for most of that time, it's normal.
Sent from my HTC One X using Tapatalk 2

That's probably about right, I get about 4 hours of continuous use, less gaming.

If it's playing games then I wouldn't be suprised, I experience the same, Tegra 3 really does drain the tiny battery of the One X especially on the high res screen.
It is possible though that your battery may also be wrongly calibrated, so if you have root, then get battery calibrator from the playstore and let it do it's thing, otherwise you can get currentWidget and use the reading to determine when the battery is fully charged (i.e. the mAh value is close to 0) and see if that helps.

I have only played 1 game for maximum half an hour.
Can you please tell me how to use Better Battery Stats I don't understand it.

tommeke19 said:
I have only played 1 game for maximum half an hour.
Can you please tell me how to use Better Battery Stats I don't understand it.
Click to expand...
Click to collapse
I haven't used Bettery Battery stats but if you get Current Widget, then put the widget on your homescreen, click on the widge until you see a "mAh" reading which indicates how much it is charging. Charge your phone, if after reaching 100% the value is still high and not close to 0 then it could be a sign of batter miscalibration, in that case, just let it keep on charging until you see the mAh value go close to 0 or possibly less than 10.

iq-dot said:
I haven't used Bettery Battery stats but if you get Current Widget, then put the widget on your homescreen, click on the widge until you see a "mAh" reading which indicates how much it is charging. Charge your phone, if after reaching 100% the value is still high and not close to 0 then it could be a sign of batter miscalibration, in that case, just let it keep on charging until you see the mAh value go close to 0 or possibly less than 10.
Click to expand...
Click to collapse
Could over charging my device cause some sort of power cable damage inside the phone?
I had to send my device back for repairs due to unexpected shutdown, and they told me the battery cables were soldered again.

You can't overcharge it without dismantling the battery.

iq-dot said:
I haven't used Bettery Battery stats but if you get Current Widget, then put the widget on your homescreen, click on the widge until you see a "mAh" reading which indicates how much it is charging. Charge your phone, if after reaching 100% the value is still high and not close to 0 then it could be a sign of batter miscalibration, in that case, just let it keep on charging until you see the mAh value go close to 0 or possibly less than 10.
Click to expand...
Click to collapse
Hi,
I've installed the app as you said, ive plugged in my phone before i went to sleep yesterday. And when i woke up it says over 30 mah and it was full charged it wasnt empty before i went to sleep and it charged for 8h
Sent from my HTC One X using xda premium

Question Real battery capacity

Is there a way to accurately check the battery capacity other than with AccuBattery and such apps? After 6 charges it's showing 93% capacity (2103mAh) for a brand new phone. This doesn't seem right. What are you guys getting?

It should be at least twice that capacity, probably a little higher being new. Most apps don't properly report statistics for dual-cell batteries, or if they do there's a setting you have to toggle to let it you know your device has a dual battery. I know Battery Guru has good dual battery support.
The other issue I've seen is if the app ever gets killed in the background it can throw off the numbers. Make sure you've disabled optimization for the app.

Same as @terlynn4 , it's because the apps aren't (for most of them) able to detect dual cells batteries. Technically, the OnePlus 9 Pro is having two cells of 2250mAh, so just configure manually your app to this (set the battery profile to 2250mAh, instead of 4500mAh) and you should be fine.

Jaxom84 said:
Same as @terlynn4 , it's because the apps aren't (for most of them) able to detect dual cells batteries. Technically, the OnePlus 9 Pro is having two cells of 2250mAh, so just configure manually your app to this (set the battery profile to 2250mAh, instead of 4500mAh) and you should be fine.
Click to expand...
Click to collapse
I almost agree, it will at least give some indication.

terlynn4 said:
It should be at least twice that capacity, probably a little higher being new. Most apps don't properly report statistics for dual-cell batteries, or if they do there's a setting you have to toggle to let it you know your device has a dual battery. I know Battery Guru has good dual battery support.
The other issue I've seen is if the app ever gets killed in the background it can throw off the numbers. Make sure you've disabled optimization for the app.
Click to expand...
Click to collapse
I know about that and I've set it up properly, but I'm worried how it's so low for a new device. 2103 instead of 2250. Or rather 4200 instead of 4500, that's not a negligible difference.

The battery life on this phone is atrocious. I know this contributes nothing to the thread, just had to say it.

Pain-N-Panic said:
The battery life on this phone is atrocious. I know this contributes nothing to the thread, just had to say it.
Click to expand...
Click to collapse
What OS are you running? For me battery life is better than I expected. I got the phone after the A12 update so it was the first OS I used and was getting 6hrs of SoT over a 24 hour period by the time I was at 20% which surprised me as I'd heard it was a big disappointment in this regard.

Zesty59 said:
What OS are you running? For me battery life is better than I expected. I got the phone after the A12 update so it was the first OS I used and was getting 6hrs of SoT over a 24 hour period by the time I was at 20% which surprised me as I'd heard it was a big disappointment in this regard.
Click to expand...
Click to collapse
I'm on the latest TMO update that just got on Android 12.

Pain-N-Panic said:
I'm on the latest TMO update that just got on Android 12.
Click to expand...
Click to collapse
How much usage are you getting out of a single charge?

I get about 11 hours on a full charge and 6 hours of music while working lol , the fast charger also can be used for 5-10 mins gives you hella juice , have you used the power save mode from a full charge ? I've gotten about 16 hours while still using it for music