Database Develop

[Q] My Nexus one die at battery 60%, help please.....

Ive tried the battery calibration technique found here. The drain battery till the phone die then open again and let it die.... I've also given the battery calibrator app from market place a go. I don't know how to use that app, im not even sure what the app does and no clues as to how to use it. Finally I've tried installing other roms, battery die at around 60% on every rom. Oh during every rom installation, I always wipe everything, including the wipe battery state. Could it be that i wiped the battery the wrong way? I didn't see the complete message. I mean when i wiped other things, it always says "something something complete" thanksss
ps. I'm using CM6

Nurra said:
I've also given the battery calibrator app from market place a go. I don't know how to use that app, im not even sure what the app does and no clues as to how to use it
Click to expand...
Click to collapse
Well there's the problem then. Read the thread, it has concise instructions.

is this a stock battery? it sounds like you have an aftermarket battery of some find. install the battery calibrator app, and post the numbers it displays about your battery. post the dumpreg too. that's the first thing to figure out the problem.
then from there you can see if a learn cycle is necessary.

RogerPodacter said:
is this a stock battery? it sounds like you have an aftermarket battery of some find. install the battery calibrator app, and post the numbers it displays about your battery. post the dumpreg too. that's the first thing to figure out the problem.
then from there you can see if a learn cycle is necessary.
Click to expand...
Click to collapse
Is this it?
voltage 4094.47
current 307.128
temp 37.2
percent 89
batt age 94
full40 3700
min chg curr 80
min chg volt 4099
empty 200.0
empty 3.416
capacity 1640
aged capa 1393
Im sorry what is dumpreg?
Thankss
Oh this is the battery that came with the phone.

From the stats, it's a huge after market battery that would need a special back cover to fit.
If that's not what you've got, it would explain the phone dying at 60%!
Full40 should be at 1452 for a stock battery.

err...special back cover! You mean the battery doesn't fit snuggly in it's place?
The battery and cover fit nicely. They came in with the box. I've used this phone for a while now, i can tell you that the battery performed well until this past week. I mean it lasted like at least 2 days. I know this is a lot for an android phone.
Could it be that my battery is old? Anyway, Ill find the time to follow the battery calibrator guide and report. thanks

Nurra said:
Is this it?
voltage 4094.47
current 307.128
temp 37.2
percent 89
batt age 94
full40 3700
min chg curr 80
min chg volt 4099
empty 200.0
empty 3.416
capacity 1640
aged capa 1393
Im sorry what is dumpreg?
Thankss
Oh this is the battery that came with the phone.
Click to expand...
Click to collapse
dude the problem is your full40 is set to 3700, no wonder your battery dies at 60%. you have to set full40 to the proper value for a stock battery. right now you are using up your entire 1400mAh capacity, and since it is programmed as a 3700 battery, it still thinks it has 60% left when it dies.
set full40 to 1452mAh, use the app to set it, and you will be fine.

After the battery calibration my battery status shows up at only 88%. Ah well at least it dies at 1%. Thanks guys

[Q] Battery Calibration

Hi fellow O2x users -
Has anyone else had a go calibrating their O2x battery? Either using marosiges' battery calibration app, or manually removing the batterystats.bin file?
I've done the following calibration cycle:
Charged to full via the wall charger, mV figure was ~4188 mV, which I've read is normal, then removed the batterystats.bin file;
Used the phone till it powered off on its own, mV figure was ~3450 mV, which is higher than normal (~3200)? Or is this normal for the O2x?
Recharged the phone uninterruped back to 100%, mV figure was ~4180 mV, so nothing wrong there again either;
Normal usage/charging of the phone over 4 days, and battery uptime is worse than before calibration. (Uptime was worst immediatly after calibration, and gradually improved, but it never got better than before calibration).
Thinking that someting had gone wrong, I repeated the calibration and observed the same mV figures as above. So far, after another 3 days, battery uptime has not improved beyond the previous calibration, and definitely not to the level of what it was before calibration.
The only things I can think of are:
The O2x requires a higher minimum level of charge to power the dual core chipset and CPUs/GPU;
The O2x has a custom batterystats.bin file to begin with, and allowing the android OS to recreate the file doesn't work.
Does anyone have any insights? I'm running stock Australia 10b ROM, rooted, with some of the bloatware packages disabled. I'm not affected by reboots/BSOD's or lock-ups.
(Marosiges' original thread, [APP] Battery Calibration - EASIEST WAY! - Version 1.2, is in the "Android Development and Hacking" section, which I unfortunately can't post to yet.)
Thanks, this forum rocks!

EVERY android phone/device I have ever owned has this problem. I just don't see what the battery stats file is used for if we just have to keep deleting it. None of my other phones have had this stupid file and they could ALL read the battery percentage just fine and as a side note also lasted longer I had a thought of making the file read only so the phone could not write to it and see if that makes the phone read the battery from the actual battery without miss informing us using the batterstats.bin file ?
Sent from my LG-P990 using Tapatalk

stevvie said:
...they could ALL read the battery percentage just fine and as a side note also lasted longer...
Click to expand...
Click to collapse
That's what I was thinking/wonderng - Li-Ion battery packs have built in circuitry that handles its state, without the need of a software layer.
Although it seems that other android phones are able to discharge to a lower voltage (to ~3200 mV) - i.e. they have more usable capacity? I'm wondering why the O2x goes off at ~3450 mV...and if that's normal.

My best advice is to avoid using stock.
It is too irregular.
If the 3G signal is weak i get constant 3G and GSM hopping which drained the battery in 2h.
But if it was good it lasted way longer.
not sure about the shutdown voltage, i'll give it a shot later
hmm i think mine shuts at 3450 as well maybe even higher, idk
but mine lasts for a day with medium usage.

i tried to look into this earlier and my battery drained to 3350ish before it shut down on me.
i guess that's its limit. i'm running on stock:
BIN_LGP990AT-00-V10b-ESA-XXX-APR-21-2011+0

I'm currently calbrating my battery as I flashed a new ROM, phone was now just shutting off at 3369 mV!
Hopefully battery performance gets better soon!

Deleting batterystats.bin did get me better battery life. But after 6 days I had a huge drain.
Rebooted phone, removed .bin again and it's going ok again....

I'm not particularly wanting to calibrate my battery too frequently - full discharge cycles are bad for the battery.
At 30% charge this morning, my voltage was at 3700 mV. If you use 100 mV as a rough gauge of 10% charge, that would give me ~3400 mV at a 0% charge level.
I guess it's just normal for the O2x battery to be flat at ~3400 mV.
If there are any other O2x users out there who have different voltage figures do make a post. Thanks!

Battery reads 100% after only a few minutes charging

Hi guys, my battery has sarted to read 100% after only a few minutes charging. The only way I know if it's charged 100% is to charge when the phone is off. I was wandering if anyone else has experienced this and knows how to solve it.
Thanks
Sent from my Optimus 2X using Tapatalk

The battery guage isn't the best. I rebooted my phone this morning and it went from 96% to 14%
About a minute later it was back where it should have been.

try to charge with the usb cable. i have this issue only with ac charger.

You could always try the common cure-all, deleting /data/system/batterystats.bin when at 100%, but I doubt it will help.

I also have this problem, it is since nightly 105 or something. Never had it before. I use the original charger, it read 100% after a few minutes of charging. When you unplug the device, it falls back to the real reading. So you never know when it is fully charged. I already deleted the battery stats in cwm, but it did`t help.

Seems like last 20 or so nightlys have battery issues......
Sent from my Optimus 2X using Tapatalk

Updating to nightly 117 seems to resolve the issue, although I don`t know which comment it would have fixed it.

it's ROM issues.. tried few ROM and these kind of bugs happened..

Try changing BaseBand and/or Ril

spica1234 said:
Try changing BaseBand and/or Ril
Click to expand...
Click to collapse
That is bull****.
Sent from my GT-P1000 using Tapatalk

Note on Li-Ion cells / battery stats
Battery life is based on the voltage detected usually on the "3rd pin" which is standard on all Li-Ion packages as regulation. Now smartphone and all electronic devices that use these single (or multiple) Li-Ion cells usually make an estimate on battery life based on the degree of discharge based on the use you make of the device during the day. Having said this, there are 2 possible ways to show battery state of charge:
1) based solely on voltage. Full battery reads 4.2V, dead will be below 3.3-3V depending on vendor. However this means that device on-time is tighly connected to how much apps you run/screen/wifi/3G usage for ex.
2) based on voltage AND usage statistics. Software monitoring will store battery statistics in a file and use them to update the battery guage accordingly so battery charge status reflects more averagely the time you have left based on your daily usage habits and battery freshness.
If you delete the battery satistics file and you still get erratic readings, either there is a software bug in the battery guage integration software readings or you may have a problematic battery cell. The simple way is to swap batteries and see if the problem is gone or not.
Note on Li-Ion cells: the cell's have a limited number of charge-discharge cycles meaning the more you reach complete discharge before charging the shorter their life span. Better charge your cell(s) everytime you can which will increase their lifespan. Avoid overheating the cells which will also decrease lifespan. If heavily using the device, keep it powerer on usb or external charger.

[Q] Battery capacity/ calibration problems

Hi there. New here.
I have a Galaxy S I9000 running CM7.1.
Recently, I have bought one of these fat batteries from here:
dealextreme.com/p/3-7v-3500mah-high-capacity-battery-pack-with-back-cover-for-samsung-i9000-galaxy-s-54276
I did not have much expectations, but the reviews were pretty positive, so I went for it.
To my "surprise", the thing did not work much better than the original battery. Obviously I went around looking for what could be the issue (I did not give up on it just yet), and I found all sorts of data about "battery calibration" techniques and such.
I charged the thing to 100%, and used the "battery calibration" APP from the Market. Did a reboot, and took it for a spin (day of avg. usage). Nothing changed about the performance of the battery.
I gave up and returned the old battery. Re-did the calibration procedure from above ("just in case").
To my surprise, all these games apparently "damaged" the battery life of the original battery somehow!
I got down to 50% charge after 10hrs of *no usage* at all (The battery stats show 40% for "cell standby"). No CPU intensive processes were running during this time.
Now, it's obvious that the battery itself did not get damaged in any way. What this does show, however, is that this "calibration" procedure did have some unexpected "persistent" impact.
One thing for sure, is that I do not understand what actually happens during this "calibration" procedure. From what I read, it deletes some "battery stats" file that is later regenerated by the OS over time.
My questions are as follows:
1) Any one seen anything like this before?
2) Will the "life" of the original battery "improve" as time goes by (as the battery stats are collected), or am I screwed without doing something about it?
3) Is there still hope for the fat battery I bought? Seeing that there are significant "energy losses" dues to some software calibration issues.
4) Is there a "right" way for switching between batteries with different capacities?
4) Anyone can recommend some APP that shows better stats about the battery? For instance, a representation of the contents of this "battery stats" file? How many MAHs the battery "has"? Any kind of interesting "debug" data?
I'd really love to have my (battery) life back.
Thanks.

Bump.
Anyone?

http://forum.xda-developers.com/showthread.php?t=1283316
Sent from my GT-I9000 using xda premium

keyme said:
Hi there. New here.
I have a Galaxy S I9000 running CM7.1.
Recently, I have bought one of these fat batteries from here:
dealextreme.com/p/3-7v-3500mah-high-capacity-battery-pack-with-back-cover-for-samsung-i9000-galaxy-s-54276
I did not have much expectations, but the reviews were pretty positive, so I went for it.
To my "surprise", the thing did not work much better than the original battery. Obviously I went around looking for what could be the issue (I did not give up on it just yet), and I found all sorts of data about "battery calibration" techniques and such.
I charged the thing to 100%, and used the "battery calibration" APP from the Market. Did a reboot, and took it for a spin (day of avg. usage). Nothing changed about the performance of the battery.
I gave up and returned the old battery. Re-did the calibration procedure from above ("just in case").
To my surprise, all these games apparently "damaged" the battery life of the original battery somehow!
I got down to 50% charge after 10hrs of *no usage* at all (The battery stats show 40% for "cell standby"). No CPU intensive processes were running during this time.
Now, it's obvious that the battery itself did not get damaged in any way. What this does show, however, is that this "calibration" procedure did have some unexpected "persistent" impact.
One thing for sure, is that I do not understand what actually happens during this "calibration" procedure. From what I read, it deletes some "battery stats" file that is later regenerated by the OS over time.
My questions are as follows:
1) Any one seen anything like this before?
2) Will the "life" of the original battery "improve" as time goes by (as the battery stats are collected), or am I screwed without doing something about it?
3) Is there still hope for the fat battery I bought? Seeing that there are significant "energy losses" dues to some software calibration issues.
4) Is there a "right" way for switching between batteries with different capacities?
4) Anyone can recommend some APP that shows better stats about the battery? For instance, a representation of the contents of this "battery stats" file? How many MAHs the battery "has"? Any kind of interesting "debug" data?
I'd really love to have my (battery) life back.
Thanks.
Click to expand...
Click to collapse
1) You're running CM7 which is known to be a battery hog so dont expect phenomenal battery life with it. Also a lot of the aftermarket batteries are fakes with their actual mAH being even lesser than that of the original samsung battery the i9000 ships with. And the battery you bought costs $15 which is way too cheap for a 3500mAH battery which basically means the battery is a fake and you were ripped off.
2) After deleting the battery stats during the calibration process it takes a few charge-discharge cycles for the battery 'life' to improve. Give it a week to settle in.
3) there is no hope for the battery you bought, unless you can return it for a refund maybe? if you cant return it, you might want to take off the battery label and see the actual mAH of the fat battery (as this is sometimes printed on the plastic shell of the battery underneath the label).
4) When switching batteries you simply run the battery calibration after you've fully charged the new battery in your handset and then you drain it until the phone fails to boot. Then you charge it to 100% without turning the handset on
5) Battery Monitor Widget is an app you might want to take a look at but it does not have the exact battery capacity for each phone pre-fed into its databases since the battery capacities vary with the manufacturer and model of each handset. It relies on you entering the exact battery capacity from your battery label into the application before it can function properly.

Thanks for the response.
I'll do a few charge / discharge cycles, and see if it improves over the week.
Just for science, I peeled off the label of the fat battery and found no useful data there. Only some kind of S/N which did not show any results on Google.
Shame. I guess I'll just leave a negative review for the battery and be smart enough the next time.

S3 mini Displaying Wrong Battery Percentage After Replacing battery and New Rom.

Hey guys, its my first post on this forum (or on any forum for that matter) so I apologize if this is in the wrong section . But recently I've been having a problem with my S3 mini and hoped I could get some help on here. So a few days ago I got a 4000mAh - 3.7V extended battery for my phone because my old one had broken. The old battery was the stock battery that came with the phone. Before I bought the new battery I also installed the PacmanROM on my android. But since I got the battery the percentage my android displays has been completely wrong. I'm pretty sure that the battery is fully charged after over 16 hours of charging but the percentage the phone displays is only around 65% and no matter how long I charge it the percentage never reaches 100 and it will stay on a certain value that will randomly fluctuate if I restart the device. So is there anyway to make my phone display the correct percentage? Thanks for your help!

In my opinion, extended batteries are more trouble than they're worth. I have dabbled with them but all have failed at some point (even brand new). If you put the battery on a flat surface and it 'wobbles' at all then its duff. I use stock batteries. Sorry if this is not what you want as an answer but just my experience with extended batteries.
Sent from my GT-I8190N running CandyKat

Thanks for the input anyway! I've never tried any other extended batteries so I ignorantly decided to get one hoping it would work well. But anyways I believe that its not the battery that's at fault since the battery seems fine to me (no bumps showing a faulty battery). I have a feeling that its my old battery that's at fault or the system still possibly assuming its a stock battery. Well I'm no expert .

Awfully I can post the link for fix this..
The APP for fix this 'bug' is "Battery Calibration", it delets a battery file, and after restart the cellphone, that file is remade with correct data.

Well I looked into Battery Calibration and have managed to find a fix! I charged my phone to "full" (which my phone only displayed as ~50% at the time) and once the battery percentage stopped increasing I left the phone to charge for a few hours after that. Then when I was sure that the battery is actually full, I installed a battery calibration app and "calibrated" my battery which deleted the batterystats.bin file. I then waited for my phone to completely run out of charge, which I sped up with an app called "battery discharge", then when I let the phone switch off by itself from an empty battery. Once the phone restarted the battery percentage displayed was correct.

Try Battery calibration

isnt battery callibration a complete myth and placebo? deleting batterystats.bin shouldnt help as it just contains data about what consumed battery juice