Database Develop

[Q] battery percentage not accurate

Hi Guys!!
i've done what this link told
http://forum.xda-developers.com/showpost.php?p=10092321&postcount=11053
but everytime i reach 100% and unplug the charger, my battery percentage immediately shows 97%, be it charging with the phone off or on....
i already did wipe my battery stats in recovery a few times, the first time only it showed that the stats were wiped, after that every time i wipe the stats, it immediately goes back to the previous menu, without stating whether the wipe was carried out or not....
can someone help this noob out here.... thnx

FYI, i just installed darky's rom v8.0 with Voodoo's kernel 5.2(lagfix disabled)
when i was on stock, my 100% could last me about nearly half an hour

I have this problem too. (I am on Darky 9.02 and have seen it in Darky 8.0 too). BUT if your battery life is satisfactory then don't worry about it.

hows the performance on v9.02 bro?

mab71 said:
hows the performance on v9.02 bro?
Click to expand...
Click to collapse
Here is another post on calibration (from Darky himself)
http://darky.ficeto.com/community/index.php?threads/guide-how-to-calibrate-your-battery.321/

mab71 said:
hows the performance on v9.02 bro?
Click to expand...
Click to collapse
9.02 is good but then so was 8.00. I personally think 8.00 was faster but its only been a few days and am still experimenting. I may remove the lag fix and still need to see if my battery is draining faster.

Also look at this post: Has some interesting but unverified info about the drop from 100% to 97/98% after unplugging
http://darky.ficeto.com/community/i...-how-to-calibrate-your-battery.321/#post-3839

Do you really want it on 100%? Easy, once it says charged, leave it on the charger for another hour and when you unplugged it should stay 100 for a while
Sent from my GT-I9000 using XDA App

Problem posted hundreds of times along with solutions like search the Rom makers forum and read the posts re this problem for starters .
Simple solution save time and effort is to ignore it .
jje

thanx all for the advices.... tried the QueenAmy method, result is:
heavily used phone: battery 'died' at 2%(???)
charged phone until 100%(phone off)
switched phone on while still charging: 97% (didnt have to unplug charger)
waited...then it went from 97% straight to 100%.(funny)
then went into recovery to wipe bat stats.
rebooted and unplugged charger, battery still at 97%....
now trying to charge a bit more longer to see if can change anything... (fingers crossed)

icejagans said:
Do you really want it on 100%? Easy, once it says charged, leave it on the charger for another hour and when you unplugged it should stay 100 for a while
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
not working bro...
left it on for about an hour, unplugged, straightaway the percentage drops to 98...

It's just a change in 2.2.1.
In 2.1/2.2, they 'stretched' out the battery life a bit to mark it up to 100%, in 2.2.1 they decided to just show it at the actual value. The reason your battery won't charge to 100% is to prolong the battery life, because if the charger always charged to 100% it would have a high chance of overcharging and damaging your battery over time.
There's no real change in battery life.

I reverted back to 2.2 and still have the problem. Maybe i shouldve flashed on 100% battery... Is it possible to solve if i do another fresh flash with 100% battery?
Sent from my GT-I9000 using XDA App

nwsk said:
It's just a change in 2.2.1.
In 2.1/2.2, they 'stretched' out the battery life a bit to mark it up to 100%, in 2.2.1 they decided to just show it at the actual value. The reason your battery won't charge to 100% is to prolong the battery life, because if the charger always charged to 100% it would have a high chance of overcharging and damaging your battery over time.
There's no real change in battery life.
Click to expand...
Click to collapse
Just to clarify this, you actually cant over charge the battery on the SGS nor Li-Ion for that matter, what happens here is that the battery goes on trickle charge pre 2.2.1 and battery degrades faster if its kept at 100%, 40% is optimal for storage now with the recent changes the phone will pretend it has charged upto 100% but will stop anywhere from 99~97% yes there is no loss in battery life but dont consider 97% as the new 100%, theres already a 3% loss in this to begin with.

EarlZ said:
Just to clarify this, you actually cant over charge the battery on the SGS nor Li-Ion for that matter, what happens here is that the battery goes on trickle charge pre 2.2.1 and battery degrades faster if its kept at 100%, 40% is optimal for storage now with the recent changes the phone will pretend it has charged upto 100% but will stop anywhere from 99~97% yes there is no loss in battery life but dont consider 97% as the new 100%, theres already a 3% loss in this to begin with.
Click to expand...
Click to collapse
thanks Earl.... but is there a solution for my prob here, or do i just have to ignore it?

thanks Earl.... but is there a solution for my prob here, or do i just have to ignore it?
Is not a problem its the current design .
all the other millions of posts on the subject no way found to increase the figure .
jje

thnx mate.... i guess i'll just have to chill about this....n stop wasting my time right... ;-)

Erase battery stats to get better battery life? flash without full battery?

Is it true that the porcentage of battery u have when u flash ur phone is the one that will be used as the new 100% ? also whats the procedure i should use to erase the battery stats? my phone dies in like 4 hours , let it discharge, charge completely and then?

I don't think so, cause i always flash my MS anytime i wish even when the indicator show <20%, or when charging on UBS

I also never bothered to charge fully before flashing. Though I think resetting battery stats does help indeed.

i also read something similar to this, someone told me to charge to full, then let the phone discharge UNTIL IT TURNS OFF BY ITSELF (=battery completely dead), then charge to full again and then delete the file batterystats.bin in /data/system folder (root required).
i suppose this is what you are talking about?
i will try this in a few hours (currently discharging the last % of my battery).

andreju said:
I also never bothered to charge fully before flashing. Though I think resetting battery stats does help indeed.
Click to expand...
Click to collapse
Im confused im supposed era the stats before right after chanrging full charging the phone or i sould let it discharge m, then erase the stast and then full charge the phone?

What's your ROM?
On froyomod do you have option to calibrate battery and wipe battery status

Well, I've flashed it to FroyoRom with approx. 40% charge, played around a little, the next day when I was normally using it and my battery went down to 30% I deleted the battery stats, the system rebooted and voilla, I was at 50%
I don't know about this full charge - discharge - full charge - delete stats version. I guess I'll try it on an occasion and see what happens. At this moment I'm at 90% after being disconnected from charger for 5 hrs, though I wasn't using the phone much during this time.

...and currently finishing the same charge - after 1 day and 17 hrs currently at 20%. My Milestone never made it through the day without having to charge it through the night. Love it

The FroyoMod is really the best at the moment...

[Q] Automatic Battery Mis-Calibration

Currently Running
--> GingerDx V023
--> Stock Kernel.
I wiped out battery stats from CWM just after flashing the new ROM , but after calibration , and after charging the phone the battery gets mis-calibrated and gives me an error in battery percentage of about 20-25%
I calibrate again , and then again it mis-calibrates again.
To explain more , Suppose I have full 100% battery and I calibrate battery. I normally use my phone , and restart my phone after listening to music etc.
I get true and correct battery percentage every time I restart.
But when I charge my phone when it has about 10% battery , it charges up to 100% in about 50 minutes.
And when I restart my phone , it says I have only 77% battery left.
Mis-calibration is only when I charge my phone , not when I am using it normally.
I am not having problems with battery life as such when I finally manage to charge it to 100% after restarting my phone several times to actually get it fully charged (about 30+ hours of moderate usage after full charge) , but I don't get the true battery percentage on my phone when I charge , and my phone doesn't charge to its full capacity in one go.
I re-flashed GDx V023 three times , but the problem persists. I tried all calibration techniques and apps in the market but failed.
What can I do ?

Mayank77 said:
Currently Running
--> GingerDx V023
--> Stock Kernel.
I wiped out battery stats from CWM just after flashing the new ROM , but after calibration , and after charging the phone the battery gets mis-calibrated and gives me an error in battery percentage of about 20-25%
I calibrate again , and then again it mis-calibrates again.
To explain more , Suppose I have full 100% battery and I calibrate battery. I normally use my phone , and restart my phone after listening to music etc.
I get true and correct battery percentage every time I restart.
But when I charge my phone when it has about 10% battery , it charges up to 100% in about 50 minutes.
And when I restart my phone , it says I have only 77% battery left.
Mis-calibration is only when I charge my phone , not when I am using it normally.
I am not having problems with battery life as such when I finally manage to charge it to 100% after restarting my phone several times to actually get it fully charged (about 30+ hours of moderate usage after full charge) , but I don't get the true battery percentage on my phone when I charge , and my phone doesn't charge to its full capacity in one go.
I re-flashed GDx V023 three times , but the problem persists. I tried all calibration techniques and apps in the market but failed.
What can I do ?
Click to expand...
Click to collapse
Did you ever try to full wipe your system?
Try to full drain your battery after calibration,
maybe it will solve your problem.
Sorry for my bad english,

acoongg said:
Did you ever try to full wipe your system?
Try to full drain your battery after calibration,
maybe it will solve your problem.
Sorry for my bad english,
Click to expand...
Click to collapse
Initiated full wipe each time.
Not tried full drain yet. Let me do it and then see if it works .

Sounds very much like a problem I encountered with my spare battery (actually, 2 spare batteries). It also appears to (in part) depend on the ROM. Stock ROMs don't seem to have that problem. Consider it a kind of tradeoff for whatever benefit you're deriving from your custom ROM.

Still not able to fix
Not sure what I can do.
Never had this problem with GingerDx V022

Mayank77 said:
Still not able to fix
Not sure what I can do.
Never had this problem with GingerDx V022
Click to expand...
Click to collapse
you can revert back to GingerDx V022 if you want better battery life

acoongg said:
you can revert back to GingerDx V022 if you want better battery life
Click to expand...
Click to collapse
I wish I hadn't had to revert back
But that's what seems like it now.

[CM7 doubt] Battery dropping to 97% just after unplugging charger

Hey guys, I have flashed my stock rom to CM7 a couple of days ago (Nightly stable build from August 5th).
Everything works GREAT, but I have only one concern about it:
After charging completely the phone (I use battery widget and I wait untill the bolt is not there anymore. The ace can be like 1 hour at 100%!), I unplug the charger and notice the battery drops from 100 to 98 or 97 (sometimes 96) in a matter of seconds! After that drop, the drain goes completely normal, even better than on my stock rom. The stock rom didn't do this initial drop, but it also didn't use to show the real battery status either.
After some researching I read somewhere that this behavior is completely normal on these li-ion batteries and that phones tends to charge to 100%, then let drain the battery about 4/5% and then charge again to 100 (you never really see this) so you can leave it plugged in for as long as you like.
Anyways, anyone experiencing this behavior with its ACE on CM7 ? Do you know if this is something normal on this phone ?
Thanks!!

Li-ion batteries should never hold a full charge.....so when the phone reaches 100% it will go into trickle charge mode .
"Friends forever." - Ventus

And the battery meter is crappy.
Sent from my GT-S5830 using Tapatalk 2

Thanks guys

Try calibrate your batery after flash new ROM.
Or when charging try to go --> settings --> about --> status --> battery status.
There you will see, if your battery is full or still charging

Yup. Calibrate your battery
1st charge to 100%
then switch off
remove battery for 5 seconds
reboot

Help. The battery is charged to 100% fast

Hello, friends
I was install a new rom, I did everything right, root, update the CMW, but when I went to install the rom (CM10 Unofficial) phone was automatically turn off, because low battery power. I open the Recovery menu I went out that the load was 0%. Wait till it is complete at 100% (in 8 minutes the charge is 0% to 100% charge), and reinstall the rom, switched on the battery was full, but after 7 minutes or less and went out ..
Now i insalled CM10 for Cooper, , and as usual, when I try to charge the battery till 100% to calibrate, charge loaded 100% very fast (5 minutes) and did not charge more ..
I've tried calibrating and nothing
because, battery not charge completely, the percentage is 100% but is false.
Thanks and sorry for my english

AW: Help. The battery is charged to 100% fast
Its simple.
Your battery is dead
Have the same issue on my battery (almost 2y old).You must order a new one :beer:
Sent from my Nexus 10 using xda-developers app

Go to battery usage. Despite the 100%, it will show charging.
That means it is charging.
Either that, or buy a new battery.
Sent from my pet- Megatron™

Bad News
Sorry my friend your Battery is Gone.
Take out the back panel and then take out the battery and see if it's swollen.
If it is ..I'm afraid you will have to buy a new one.
Don't keep using that it's Dangerous.