Database Users

Calibrating the battery in MIUI Rom.....

Hi all. I'm using Miui rom 1.6.17.1. i installed it without charging the phone fully and now my battery life sux :-\
So i turn my phone off and try to charge it for caibrating in CWM but it turning on once i plug the charger....
I understand thats it a known issue, so how can i do this thing?

calibrating in miui? i would say its impossible
when my charger is pluged in an i restartmy phone then spring the percentag from 40 to 55

sad ... same here ... but you may try to let your phone to complete discharging battery, until go off ... and after that charge it 100% without using the phone and clear battery statistics from cwm.

Well...may be it was stupid thing to do but i flashed froyo back on...calibrated and than flashed miui with 100%

well ... your battery will still suck...cuz its cm7 base..which has battery drain
cm7 <3

Yeah...thats a problem, but i'm in love in miui

The latest cm7 should have addressed it already.
I was in the same situation as you, battery only lasts 6hrs on any given day.
My battery now lasts more than a day even on moderate use n 3G on all day. I initially rest the battery stats then performed a full power cycle.
Now when I upgrade between miui versions, I always ensure that the battery is 100%
Sent from my GT-I9000 using XDA Premium App

may i know how to calibrate battery ?
i m in miui rom

You can't calibrate the battery properly in MIUI as it is supposed to be done with the phone off, MIUI or rather as someone else has mentioned its down to CM7
It can't charge the phone with it switched off because I believe CM7 is based on the Nexus and the Nexus cannot charge with the phone off
I could be wrong though, but the above is what I have gathered through reading about it

tcboy88 said:
may i know how to calibrate battery ?
i m in miui rom
Click to expand...
Click to collapse
I flashed froyo rom, calibrated normally and than flashed miui again :-\

suhoy119 said:
I flashed froyo rom, calibrated normally and than flashed miui again :-\
Click to expand...
Click to collapse
Can anyone confirm this successful? I have horrible battery life in CM7 and am wondering if this is a legit option.

Market: batterycalibrating
Iam on galnet miu 3.2 with neo 10 Kernel uv. Jv6 Modem.
21 hours since last charging and 32 % left.
3g on, sync on, calls 1 hours, 70 sms, some surfing and some doodle

Could be useful to post someone batterystats.bin from a phone well.calibrated?
Sent from my GT-I9000

Here you go.
http://www.4shared.com/file/tN3LK_kV/Copy_of_batterystats.html
Rename to batterystats.bin

Battery charged, but not fully?

I read somewhere on this forum that after some time, battery on the Wildfire won't fully charge... I guess it is happening to me. I get green notification light (battery is full) but it stays on 91%. That happened 2 times in the charge-discharge cycles. Today I recalibrated the battery stats and now it is showing 100%. I will see how it goes, maybe it was because after flashing latest CM I did not recalibrate battery stats in the first place... Anyone had similar problems? + My battery is charging rather quickly... Weird.
Sent from my HTC Wildfire

Hi I see this too when my phone is charging. I think its to do with cm7 Coz I've always had this since I came to cm7.
Sent from my HTC Wildfire using xda premium

I can confirm this too. LED turns green on 90%. I have to let it charge till it shows 100% and fully charged.

CM7 turns the battery LED green at 90%. This is happening since Nightly #0 that released back in January. I am surprised you didn't notice it till now?

Thanks all. I probably didn't notice it until now because I usually charge the phone while I am sleeping. Sheesh, I feel better now.
Sent from my HTC Wildfire

The batteries in your phones should NEVER be charged 100% and hopefully the Wildfire has the hardware to prevent this. By recalibrating, you merely reset the maximum voltage setting to calculate the percentage. Which is fine, but doesn't magically change the chemicals inside the battery.

henkdv said:
The batteries in your phones should NEVER be charged 100% and hopefully the Wildfire has the hardware to prevent this. By recalibrating, you merely reset the maximum voltage setting to calculate the percentage. Which is fine, but doesn't magically change the chemicals inside the battery.
Click to expand...
Click to collapse
Recalibrating just fixes readings..lol i know.
but there were few wildfires that got the problem i described in the op for real. im happy mine just had wrong batt readings.
Sent from my HTC Wildfire

The readings are probably accurate, AFAIK CyanogenMod doesn't lie by default about what value it gets from the kernel but all oem firmware versions do just to stop people from complaining.

Extreme Battery Level Drop After Reboot, Increases During Use

The topic pretty much explains it. I've been using different modified stock roms and now I'm on the latest nightly of CM7, and I keep having this issue. After a reboot at around 50%, the battery drops to 15%. The weird part is that while I continue to use the phone, it slowly rises back up to sometimes 30% and then starts going back down. I've always cleared battery stats when flashing and calibrated (which I believe is unnecessary), but I don't know if this is a problem with the battery, the phone, or if anyone else is having the same issue?
Attached is a screenshot of battery usage. You can see I never actually charged the phone.
Sent from my GT-I9100 using Tapatalk

I have exactly the same issue.
Sent from HydrOG3N MOD S2.
Technology Evolves, Android Evolves.
HydrOG3N is THE Revolution.

[email protected] looks like a bow and arrow..
anyway guys, you need to recalibrate your battery, its not being read accuracy.
download BatteryCalibration from the market, charge your phone till 100% (not just 100% but when it beeps, that its truely at 100%), then use BatteryCalibration to calibrate your battery, and then drain it to 0.. (crank full brightness, turn on LED flashlight, blast internet radio, whatever makes it drain faster to get this part overwith), then recharge it to max.
so;
charge to full 100%
while still plugged in, run BatteryCalibration
discharge to 0%
recharge to 100%
battery successfully calibrated, you will now have an accurate reading

I had exactly the same issue on 3 different custom roms....finally resolved by going bck to stock rom
mgxplyr said:
The topic pretty much explains it. I've been using different modified stock roms and now I'm on the latest nightly of CM7, and I keep having this issue. After a reboot at around 50%, the battery drops to 15%. The weird part is that while I continue to use the phone, it slowly rises back up to sometimes 30% and then starts going back down. I've always cleared battery stats when flashing and calibrated (which I believe is unnecessary), but I don't know if this is a problem with the battery, the phone, or if anyone else is having the same issue?
Attached is a screenshot of battery usage. You can see I never actually charged the phone.
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
Sent from my GT-I9100 using XDA App

soraxd said:
[email protected] looks like a bow and arrow..
anyway guys, you need to recalibrate your battery, its not being read accuracy.
download BatteryCalibration from the market, charge your phone till 100% (not just 100% but when it beeps, that its truely at 100%), then use BatteryCalibration to calibrate your battery, and then drain it to 0.. (crank full brightness, turn on LED flashlight, blast internet radio, whatever makes it drain faster to get this part overwith), then recharge it to max.
so;
charge to full 100%
while still plugged in, run BatteryCalibration
discharge to 0%
recharge to 100%
battery successfully calibrated, you will now have an accurate reading
Click to expand...
Click to collapse
I'll try this one more time and report back.

mgxplyr said:
I'll try this one more time and report back.
Click to expand...
Click to collapse
Sorry guys, but your method with BatteryCalibration is useless ....
If you wanna do a correct calibration, look at here http://forum.xda-developers.com/showthread.php?t=1312273
Cheers

Put back the battery on the right side.
8. Turn on the phone.
9. Pray the Battery god
And that post is just nonsense based on the old battery bump method .
jje

mgxplyr said:
The topic pretty much explains it. I've been using different modified stock roms and now I'm on the latest nightly of CM7, and I keep having this issue. After a reboot at around 50%, the battery drops to 15%. The weird part is that while I continue to use the phone, it slowly rises back up to sometimes 30% and then starts going back down. I've always cleared battery stats when flashing and calibrated (which I believe is unnecessary), but I don't know if this is a problem with the battery, the phone, or if anyone else is having the same issue?
Attached is a screenshot of battery usage. You can see I never actually charged the phone.
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
i have the same problem when i use custom roms.
i have been using pure stock rom by wannam but rooted for the past week with 12 hours aday syncing and surfing the net and plenty of voice calls via viber and my battery lasts at least 16 to 18 hours.
right now i am using odexed KL3 Kernel KL2Base KL1modem 2.3.6 and it is absolutely amazing interms of battery life and performance.
http://forum.xda-developers.com/showthread.php?t=1292825
http://www.multiupload.com/06I066U6S8
i have gotten rid of all samsung craps through titanium backup. i only have samsung apps application cuz of some paid apps which are for free such as tapatalk and many more on samsung app store.
my free memory is 97mb (original rom free memory is only 27mb)
i dont use any task killers i use 1Tapcleaner pro.

JJEgan said:
Put back the battery on the right side.
8. Turn on the phone.
9. Pray the Battery god
And that post is just nonsense based on the old battery bump method .
jje
Click to expand...
Click to collapse
Maybe, you wanna share a better way to all of us ?

Are you using speeded kernel. If you are then it is because logging and debugging is off.
Sent from my GT-I9100

Completely stock phone never rooted.
Same problem.
Just sayin'
Sent from my GT-I9100 using XDA App

Got the same here, very strange, on CM7
Sent from my GT-I9100 using XDA App

This thing only happens on CM7 for me. It had 40% before reboot and like 15% after. However mine only increased to about 17% then started dropping as usual. This never happened on any stock ROMs I've tried(stock, not themed/modded stock).
Sent from my GT-I9100 using xda premium

did you
did you rsolve the problem ? how? I have the same problem and I tried more stock roms ... I don't know what tot do ....

Its nothing to do with calibration etc, its just how the fuel gauge chip works, it learns and more accurately reports usage over time. For example, if you reboot and (I can't remember the actual voltages for the S2) you have 1200mV, the chip goes, "ah, that is 15% battery." Then as you use it more, it relearns its settings and goes "aaah, my mistake 1200mV is really 30% battery. I'll display that instead."
Its been covered frequently that "calibrating" the battery of the S2 in any way but actually using it, is next to useless.
Sent from my GT-I9100 using xda app-developers app
---------- Post added at 11:05 AM ---------- Previous post was at 11:03 AM ----------
Also just noticed this thread is a year old, but hopefully it will help the poster above.
Sent from my GT-I9100 using xda app-developers app

I'm having this problem too, what did you all do besides get new phones?

Got the same here, after update stock jellybean

Had this problem, when my S2 was half a year old.
I got the original Extended Battery and that solved this issue completely.
The replacement Battery has held up since 2013

soraxd said:
[email protected] looks like a bow and arrow..
anyway guys, you need to recalibrate your battery, its not being read accuracy.
download BatteryCalibration from the market, charge your phone till 100% (not just 100% but when it beeps, that its truely at 100%), then use BatteryCalibration to calibrate your battery, and then drain it to 0.. (crank full brightness, turn on LED flashlight, blast internet radio, whatever makes it drain faster to get this part overwith), then recharge it to max.
so;
charge to full 100%
while still plugged in, run BatteryCalibration
discharge to 0%
recharge to 100%
battery successfully calibrated, you will now have an accurate reading
Click to expand...
Click to collapse
did it but it still there... phone flicks and goes off at or below 40% wont turn on again:crying:

same here and I got the 2000 mAh samsung battery back in the days but now it happens with both of them also when my phone shuts off the screen brightness start flashing weirdly

[Q] [CM7/9] battery at 99%

After i flashed cm7 a long time ago i noticed that after total charging (100%), when i disconnect the phone it immediately says 99%, i have callibrated the battery and still the same... is not something too important either, but it stills bugging me :/
any help?
btw, it's a red lens defy...

thats just how it is. When plugged in its using the power from the plug and when you disconnect it, then its drawing power from the battery so it will read less. There is no helping it, just what happens it doesnt mean your phone will discharge faster or anything.

99% battery after plug off happens to me always on every rom I tried (even stock one).
Actually I don't care at all.
Bye,
Peppe

gmcgmc said:
99% battery after plug off happens to me always on every rom I tried (even stock one).
Actually I don't care at all.
Bye,
Peppe
Click to expand...
Click to collapse
On stock...? Rally? Didn't know there was a stock ROM with 1% increment. Stock ROM's only have a regular battery indicator and in battery's settings it shows the battery state in 10% increments - 100; 90; 80 and so on...

Auris 1.6 vvt-i said:
On stock...? Rally? Didn't know there was a stock ROM with 1% increment. Stock ROM's only have a regular battery indicator and in battery's settings it shows the battery state in 10% increments - 100; 90; 80 and so on...
Click to expand...
Click to collapse
I think about-status shows percentage in 1 or 5% steps not sure... din use stock much...
Sent from my MB526 using xda premium

Auris 1.6 vvt-i said:
On stock...? Rally? Didn't know there was a stock ROM with 1% increment. Stock ROM's only have a regular battery indicator and in battery's settings it shows the battery state in 10% increments - 100; 90; 80 and so on...
Click to expand...
Click to collapse
Oops Probably I've used the stock rom too little... My memory is bad. But the part on CM is true
Sorry for the misleading information,
Peppe

nogoodusername said:
I think about-status shows percentage in 1 or 5% steps not sure... din use stock much...
Sent from my MB526 using xda premium
Click to expand...
Click to collapse
I can bet my monthly sallary on 10%

hav you tried to calibrate your battery? in play store are several tools.

Hairo The Blue Mage;26400435 i have callibrated the battery and still the same..[/QUOTE said:
He said he calibrated it. I calibrated mine with battery calibrator and with deleting battd.bin and restarting with no battery and both do exactly as he says. There is no fix its just that the battery is fuller when plugged in. If you have battery monitor the mV will go down as it stops drawing power off the plug and draws it off the battery. You can never be 100% when you are drawing power off the battery its a simple fact
Click to expand...
Click to collapse

kelbygreen said:
He said he calibrated it. I calibrated mine with battery calibrator and with deleting battd.bin and restarting with no battery and both do exactly as he says. There is no fix its just that the battery is fuller when plugged in. If you have battery monitor the mV will go down as it stops drawing power off the plug and draws it off the battery. You can never be 100% when you are drawing power off the battery its a simple fact
Click to expand...
Click to collapse
Well, i had a Moto CliqXT(Quench) running cm7 that keeped the 100% for a while after unplug, that's why i asked... but thanks for the info, i thought my battery was damaged or something like that...
maybe it's something related to the kernel, as the cliqxt have the bootloader unlocked and many optimizations were made to it's kernel... just wondering...

cm9 battery charging problem (80%) mb 526

i have a defy plus MB 526 with gingerbread kernel and espys CM9-NIGHTLY-120723-Defy+ , when i recharge my device it only charge upto 80 %. I even cleared battery stats using cwm recovery and calibrated at 80 %. Could anyone help me i need to recharge to 100%

Try this
ftpankaj said:
i have a defy plus MB 526 with gingerbread kernel and espys CM9-NIGHTLY-120723-Defy+ , when i recharge my device it only charge upto 80 %. I even cleared battery stats using cwm recovery and calibrated at 80 %. Could anyone help me i need to recharge to 100%
Click to expand...
Click to collapse
I am not an expert but i think you can do this....
1. Clear your batter stat
2. Drain your phones battery completely
3. Recharge your phone to 100% while it is switched off. (this might take 2 hours i think)
4. Once it is completely recharged....then use any battery calibration application and calibrate it while it is 100% charged.
I hope this works, else you will need to find some battery fix for this problem
Thanks.

Maybe u hav a defective battery mate. Try another battery, see if u still got 80%.
Sent from my HTC Vision using xda app-developers app

Shrewdy said:
I am not an expert but i think you can do this....
1. Clear your batter stat
2. Drain your phones battery completely
3. Recharge your phone to 100% while it is switched off. (this might take 2 hours i think)
4. Once it is completely recharged....then use any battery calibration application and calibrate it while it is 100% charged.
I hope this works, else you will need to find some battery fix for this problem
Thanks.
Click to expand...
Click to collapse
Dude u are awesome thanks it worked

ook.tiaopi said:
Maybe u hav a defective battery mate. Try another battery, see if u still got 80%.
Sent from my HTC Vision using xda app-developers app
Click to expand...
Click to collapse
thanks for reply dude but my battery is ok i needed to calibrate it .