Database Users

Losing Battery life pretty fast now.. why?

I flashed my vibrant to bionix 1.3.1 a while back, pretty much a week after is was released. Its been great up to about 2-3 days ago. I had a full charge at work at today around 2 pm, I got home and checked the battery life at around 6 pm it was at 72%. I sent out about 4 texts lastnight. Got up this morning is was at 44%. I used to get about 2-3 days out of light use. It will probably be dead by 2 pm again today.
What gives?
Network data off -
Black background -
Brightness is the lowest -

Idk maybe randomly reading it wrong? P.s. Why dont people charge their phones at night?!?!? Thats what I do

Oh i do as well usually. But like i said, the battery is starting to drop so fast that by lunch that day it was already at like 49%. By 2 pm is was full and so on. I just dont understand why its dropping so fast thats all.
Might have something to do with the battery

Check what's running in the background. The other night I was just using the phone normally and put it to sleep, checked it a few times and it was dropping 1% every 15 minutes or so. Noticed it kept checking into something. VVM and Market Checkin was running, killed it and it seemed to help. Also discovered (might not be true) that the New MAPS and GMAIL apps constantly check in and drain the battery after removing the updates phone seems to last longer/as it did before..:/

oo maybe that might be it. I Just updated a boat load of my apps a few days ago. P.s. how do you remove just the update?

Daymic said:
I flashed my vibrant to bionix 1.3.1 a while back, pretty much a week after is was released. Its been great up to about 2-3 days ago. I had a full charge at work at today around 2 pm, I got home and checked the battery life at around 6 pm it was at 72%. I sent out about 4 texts lastnight. Got up this morning is was at 44%. I used to get about 2-3 days out of light use. It will probably be dead by 2 pm again today.
What gives?
Network data off -
Black background -
Brightness is the lowest -
Click to expand...
Click to collapse
WIDGETS IN BACKGROUND ON DEKTOP ? SHUT THEM OFF
TURN OFF USB DEBUGING
REMOVE WI-FI CALLIN
IN GALAXY S TUNER (APP FROM MARKET ) PUT MEMORY MANAGEMENT ON AGRESSIVE
those are just a few tips , if You didn't install anything that would change Your battery behavior TRY TO CHARGE YOUR PHONE IN WALL OUTLET INSTEAD OF COMUPUER USB ,also did You flash any updates to Bionix that got released because of so some of them contain update to modem so if previous bionix was on JL4 modem which is fast and battery savy new update might off reflashed your modem to newer one as fast as old but with worst battery . good luck i can give u million tips how to save juice , oh btw :
http://forum.xda-developers.com/showthread.php?t=931351
also clean up Your battery stats in clockwork and recharge it with wall outlet Your battery might be recalibrated and when it shows 2% left u might have 10 really instead that's why clean battery stats and recharge.

or sadlly Your battery cant hold the juice anymore because it was recharged to zero few times too many , sorry

This is crazy. I just came to xda to post my bionix 1.3.1 battery problem. I been running it for a week and no issues. But this morning I took the phone off the charger and within 10 minutes of using it I was down to 85%. Usually after my morning usage I'd be around 93-95%. But that's not the issue I wanted to post.
I was trying to wait for Black Ice since Frost had the best battery life of any rom I've tried...just not feeling the Frost theme. So I started to download the Frost zip & got the phone on the charger.
Even after I put it back on the charger my battery life kept going down. Plugged it in at 85% and a few minutes later I noticed it was at 83%
Sent from my SGH-T959 using XDA App

SaintJimmy76 said:
This is crazy. I just came to xda to post my bionix 1.3.1 battery problem. I been running it for a week and no issues. But this morning I took the phone off the charger and within 10 minutes of using it I was down to 85%. Usually after my morning usage I'd be around 93-95%. But that's not the issue I wanted to post.
I was trying to wait for Black Ice since Frost had the best battery life of any rom I've tried...just not feeling the Frost theme. So I started to download the Frost zip & got the phone on the charger.
Even after I put it back on the charger my battery life kept going down. Plugged it in at 85% and a few minutes later I noticed it was at 83%
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
lso clean up Your battery stats in clockwork and recharge it with wall outlet Your battery might be recalibrated and when it shows 2% left u might have 10 really instead that's why clean battery stats and recharge. I WASNT CLEAR ENOUGH I GUESS ...OH WELL.

Daymic said:
oo maybe that might be it. I Just updated a boat load of my apps a few days ago. P.s. how do you remove just the update?
Click to expand...
Click to collapse
Just go to the market, tap menu and then go to DOWNLOADS
look for GMAIL and MAPS, click on them and then where it says "Uninstall update" you want to click that. Done.

truee u might want to disable location access if its on too

if u updated ,find out which modem the previous rom u ran and reflash it to the modem u had before.

I had this problem with nero after a month of use. Wipe battery stats when the battery is fully drained. Fixed my battery problems.
Sent from my SGS Vibrant

Thx guys, ill wipe the battery stats and unistall the updates.

Does USB debug consume power?
Don't blame me, blame my keyboard's autocorrection algorithm.

demize! said:
Does USB debug consume power?
Don't blame me, blame my keyboard's autocorrection algorithm.
Click to expand...
Click to collapse
i'm sure it's not.
Sent from my SGH-T959 using XDA App

I have the same problem. I have system panel running all the time. When I sleep, the phone sleeps too and uses about 1% of battery per hour. But when im actually using the phone, even if the use is minimal like sending a few texts etc. The battery consumption is far greater than the use. Top apps in system panel monitoring is usually system process and system itself. How do I correct this issue?
Sent from my Samsung Vibrant (Bionix-V 1.2.1) using XDA Premium app

Daymic said:
Thx guys, ill wipe the battery stats and unistall the updates.
Click to expand...
Click to collapse
I had a issue a while back. What I did to fix it is go with the standard rom. Then slowly I would put one or 2 apps back on. After a day or so I found out which one was to blame and got rid of it.

sLiKK said:
I have the same problem. I have system panel running all the time. When I sleep, the phone sleeps too and uses about 1% of battery per hour. But when im actually using the phone, even if the use is minimal like sending a few texts etc. The battery consumption is far greater than the use. Top apps in system panel monitoring is usually system process and system itself. How do I correct this issue?
Sent from my Samsung Vibrant (Bionix-V 1.2.1) using XDA Premium app
Click to expand...
Click to collapse
+1
I have the *EXACT* problem. It bugs me so much. Good to know I'm not the only one experiencing this. Everyone brags about how their phones lasts for 3 days and I call BS.

Deggy said:
+1
I have the *EXACT* problem. It bugs me so much. Good to know I'm not the only one experiencing this. Everyone brags about how their phones lasts for 3 days and I call BS.
Click to expand...
Click to collapse
I agree with you also. These guys must have some super batteries to get that kind of life out of it. lol.

What is up with the battery life on 2.3.3?

After replacing the battery with a 1600 mah Seidio battery. I still get bad results. For example, during lunch today my phone was at 50% in my locker. After 4 hours, I was at 21%. My Sync, GPS, BT and Wifi are all OFF.
How is this possible?
I use to own a Nexus One and in 4 hours it would go down 2% with CM6. Is Gingerbread an issue here or does my phone need RMA repair?

2.3.3 gives me better battery than 2.1 or 2.2

b1337 said:
2.3.3 gives me better battery than 2.1 or 2.2
Click to expand...
Click to collapse
Are you running any special kernels or using Set Cpu?

Use the latest pershoot kernel I get great battery life on my N1
Sent from my Nexus One using XDA Premium App

FastMhz said:
Are you running any special kernels or using Set Cpu?
Click to expand...
Click to collapse
superaosp from [email protected] stock kernel or redstars depends but cm7 and stock OTA gave me better battery than 2.2/2.1

I'm running stock 2.3.3 and battery life is by far the best over various android versions.

2.3.3 has some weird bug where every once in a while the system gets into a weird drain state like it doesnt go into deep sleep correctly. i just got hit with this last night. it does happen all the time, most of the time on 2.3.3 battery life is excellent. i will lose 6% over 8 hours. but when that awake bug DOES kick in, battery drops like yours did.
you just have to reboot and check it again, the bug likely will clear itself and you wont see it again, for a while.

RogerPodacter said:
2.3.3 has some weird bug where every once in a while the system gets into a weird drain state like it doesnt go into deep sleep correctly. i just got hit with this last night. it does happen all the time, most of the time on 2.3.3 battery life is excellent. i will lose 6% over 8 hours. but when that awake bug DOES kick in, battery drops like yours did.
you just have to reboot and check it again, the bug likely will clear itself and you wont see it again, for a while.
Click to expand...
Click to collapse
Thank you Roger.

Using darky rom in samsung galaxy s. Version rc4 2.3.3 amazing for battery
Enviado desde mi GT-I9000 usando XDA Premium App

83fb said:
Use the latest pershoot kernel I get great battery life on my N1
Sent from my Nexus One using XDA Premium App
Click to expand...
Click to collapse
Just applied pershoot's kernel. Will report back. Thank you!

So I went from 80 to 50% in 4 hours!!
I went.into battery status and saw that it was in an "awake" status
Sent from my Nexus One using XDA App

FastMhz said:
So I went from 80 to 50% in 4 hours!!
I went.into battery status and saw that it was in an "awake" status
Sent from my Nexus One using XDA App
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Click to collapse
yes, this is exactly what the bug is. sometimes randomly on GB the phone stays awake for no reason, for hours. but when this DOESNT happen, batteyr life is superb. i only get hit with this bug once a week or less.

G
RogerPodacter said:
yes, this is exactly what the bug is. sometimes randomly on GB the phone stays awake for no reason, for hours. but when this DOESNT happen, batteyr life is superb. i only get hit with this bug once a week or less.
Click to expand...
Click to collapse
I hope google resolves this issue! I was getting worried that I have a defective phone.
Sent from my Nexus One using XDA App

My N1 on 2.3.3 goes completely dead after 12hrs. I found the solution when doing a Google search. It's to go to Wifi Settings, Advanced, Wi-Fi sleep policy, and change it to Never. You'd think that would reduce battery life, but for some reason now my phone's battery life is very significantly improved. Now it's only down to about 30% after 19hrs when I put it on the charger.

It appears that 2.3.4 will address battery issues in Gingerbread.
http://www.google.com/support/forum/p/Google+Mobile/thread?tid=3812c1acf93b482f&hl=en

tech338 said:
It appears that 2.3.4 will address battery issues in Gingerbread.
http://www.google.com/support/forum/p/Google+Mobile/thread?tid=3812c1acf93b482f&hl=en
Click to expand...
Click to collapse
That's pretty cool even though I've not had any major battery issues.
But improvements are always welcome
Here's a quote from your link:
"- Battery life: some users let us know that their batteries didn’t seem to be lasting as long; battery life should be improved for these folks. (Nexus One)"

FastMhz said:
After replacing the battery with a 1600 mah Seidio battery. I still get bad results. For example, during lunch today my phone was at 50% in my locker. After 4 hours, I was at 21%. My Sync, GPS, BT and Wifi are all OFF.
How is this possible?
I use to own a Nexus One and in 4 hours it would go down 2% with CM6. Is Gingerbread an issue here or does my phone need RMA repair?
Click to expand...
Click to collapse
I dont think its Gingerbread, ive used both stock and CM7 on my N1 and i was having good bat life on N1 stock gingerbread about 5-6 hours with heavy use, and with CM7 official rom i get 7-8 hours heavy use and up to 19 hours on days i barely use the phone, and on standby i can confirm 8 hours (while im asleep) it drains 6% by the time i wake up of course i do have it personalized and settings applied for bat savings.

I haven't encountered this bug with CM 7.0.3 (based on 2.3.3) but I found it very useful to let the phone just drain the battery completely once in a while (once in a few weeks) and than fully charge it.
After doing that, I can go through two days with regular usage of the device

I'm on CM 7.0.3, 2.3.3 and I'm only getting 13-15 hrs if I'm lucky. Wifi and bluetooth are off only syncing gmail and google contacts. I barely even touch my phone at work for 8 hrs and the battery life sucks.
Another weird thing is that once it gets to 15% left it just automatically dies and shuts down...very frustrating, I'm on the latest pershoot kernel too, the phone was given to me for free last month and it was originally purchased in Feb '10 so I just figure the battery is old and worn out.
Sent from my Nexus One using XDA App

Zephead said:
I'm on CM 7.0.3, 2.3.3 and I'm only getting 13-15 hrs if I'm lucky. Wifi and bluetooth are off only syncing gmail and google contacts. I barely even touch my phone at work for 8 hrs and the battery life sucks.
Another weird thing is that once it gets to 15% left it just automatically dies and shuts down...very frustrating, I'm on the latest pershoot kernel too, the phone was given to me for free last month and it was originally purchased in Feb '10 so I just figure the battery is old and worn out.
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
No. Your battery is not aged, it just needs re-calibration.
One simple way is to re-calibrate your battery is to charge it when the phone is off or charge using a desktop charher, and you have to over-charge a bit - just leave the battery connecting to power source for an additional 1 hour or more, when the charging process has been completed.
This works every time for me.
Keep in mind that from time to time the battery may need to be re-calibrated again for peak performance.
Sent from my Nexus One using Tapatalk

LG GT540 battery drain very fast

I have LG GT540 with android 2.3.4 cyanogen and the battery is just getting drain to fast ( its new battery) .when i go to battery use i saids that android system use 99-100% of battery waht its not normal ( my friend has about 7-8% use) and she last for 1-1.5 hours with normal work ,in idle about 4 hours till battery drops dead. Phone is getting to hot , i tryed to put others 2.3.7 and its same again what sholud i do.
solution i tryed: wipe battery stats -didnt help
going from 2.3.4 to 2.3.7 -didn help
PM me to see pic cuz i am new here so i cant post outside links at the moment.

Did you wipe data when updating to 2.3.7? If not, try it (maybe also without restoring stuff from backup, if wiping+restore does not help)

yes i always wipe data/cache/dalvik cache so tahts not issue,can i format SD card is she a problem maybe?

yeah same for me i am also using a rather new battery

The battery level stays on some percentages longer than others.
Sent from my GT540 using XDA App

yeah our phone is not so accurate my sisters sensation xe shows every 1%

bs828 said:
yeah our phone is not so accurate my sisters sensation xe shows every 1%
Click to expand...
Click to collapse
Same with my friend's LG Optimus 2X. Any solution?
Sent from my GT540 using XDA App

This may sound stupid but works
Charge it to 100% wipe the battery stats let it drain out then recharge it to 100 let it drain out again and then carry on as normal i do this before and after each rom and clear the stats etc before releasing each softmod my battery lasts on average 2-3days thats texting and 4-7 phone calls maybe abit of radio and checking email 4-5 times
Sent from my tf101 using xda premium 1.54Ghz

Danzano said:
This may sound stupid but works
Charge it to 100% wipe the battery stats let it drain out then recharge it to 100 let it drain out again and then carry on as normal
Sent from my tf101 using xda premium 1.54Ghz
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Click to collapse
I did that many times but without success ,my battery is dead with 1-2 hours of use
Sent from my GT540 using xda premium

1-2 is realy extrime, try wiping data and see how long it last without anything installed. If it still 1-2, there is hardver problem.
Hot phone can be inditcator of cpu or motherboard problem. :-\
Sent using Tt.

markanzyxel said:
I have LG GT540 with android 2.3.4 cyanogen and the battery is just getting drain to fast ( its new battery) .when i go to battery use i saids that android system use 99-100% of battery waht its not normal ( my friend has about 7-8% use) and she last for 1-1.5 hours with normal work ,in idle about 4 hours till battery drops dead. Phone is getting to hot , i tryed to put others 2.3.7 and its same again what sholud i do.
solution i tryed: wipe battery stats -didnt help
going from 2.3.4 to 2.3.7 -didn help
PM me to see pic cuz i am new here so i cant post outside links at the moment.
Click to expand...
Click to collapse
First of all swiftdroids battery is only supposed to last 1 day.. so use a differnet rom. Secondly check that ur CPU is on ondemand not performance .. cause sometimes u get the rom like that.
Sent from my GT540 using Tapatalk

what worked for me
Hi
I wanted to thank for Zoe Rom on its thread, but i cant write on developer's threads yet (altough i clicked thanks button there).
Im glad i finally got rid of my memory hogging default rom and now i have a properly working phone again!
Also i wanted to reply there (to some people also complaining about battery endurance on GT540 on Zoe Rom) how i fixed my battery main problem.
Pic of current battery drain:
http://postimage.org/image/d8o8uusd7/
As you can see i am aproximatelly at 50% battery after 1day and 11h of not charging.
I had 2 problems:
1- Battery lasted aproximatelly 5 hours on standby (and i mean i wouldnt even touch the phone and the battery was gonne after that time)
2- During intense battery drain usage, the battery was reporting to have less energy than what it actually has.
1st problem solved by simply turning off the wireless after im done with using it. No idea how could that be taking away so much energy, but it was. Somewhere during the period i was using my default rom i got used to have wireless always on, and my battery on the later times was going away faster than normal (i also like to listen to music on the phone). At the time i didnt correlate the 2 things, and i just put in my head that it probably was the battery dieing on me. It wasnt! The wireless (i suppose because of the Sync function also being on) has been draining my battery like mad between charges.
2nd problem persists. As you can see on the pic, those 2 spikes down correspond 2 diferent aproximatelly 1 GB file wireless transfers with Wifi File Browser app. This transfers (PC->Phone) make the phone CPU have to unzip the two 1GB files to the SD, so they are very CPU and SD card read/write intensive (i can force this battery drops with other instense battery use like playing a 3D game for example). The thing is if during that temporarly drop on the battery level measurement, the level hits 5%, the phone will shutdown. But to be honest, this problem is minor comparing to the 1st one.
There is one other minor problem with my battery, wich is the reading being inconsistent (drops 10%, then gains 15% then drops 5% again etc), but is this a problem at all?
I read a post of a guy that had made extensive testing to his battery cycles, providing loads of graph of battery levels (cant find link) . I didnt read through all of it, but i remember the guy saying something in the end like "Dont be too paranoid with your battery levels, as they arent accurate. Instead use your phone normally and you will gain an idea of how long will it last with certain types of usage"
By the way, he also said for people to just charge their battery whenever they could/wanted as it has no negative impact on battery life. I also read a bit of a paper on lithium-ion batteries stating the same, so no more forcing full-discharges for me!
One last thing! Deleting the batterystats file is as simple as disconnecting your phone from the charger.Why? because that file serves solely the purpose of suplying the UI with info of the battery drain usage on the current battery cycle.
http://www.xda-developers.com/android/google-engineer-debunks-myth-wiping-battery-stats-does-not-improve-battery-life/
And you can confirm this if you unplug your phone while looking at yout battery stats.
I hope this helps
PS: pls notice that it could have been not the wireless itself that causes the battery drain, but some service using the wireless. Finding this would require more extensive testing.

zedshot2 said:
PS: pls notice that it could have been not the wireless itself that causes the battery drain, but some service using the wireless. Finding this would require more extensive testing.
Click to expand...
Click to collapse
Nice review! Excellent and 100% Trustfully :good:

Danzano said:
This may sound stupid but works
Charge it to 100% wipe the battery stats let it drain out then recharge it to 100 let it drain out again and then carry on as normal i do this before and after each rom and clear the stats etc before releasing each softmod my battery lasts on average 2-3days thats texting and 4-7 phone calls maybe abit of radio and checking email 4-5 times
Sent from my tf101 using xda premium 1.54Ghz
Click to expand...
Click to collapse
Some people says that this does not work, but it worked for me. This procedure extended m battery life from 5h to 2 days..

Update
Hello again
I just wanted to give an update on the situation since i noticed this post is linked from the Zoe Rom thread.
Two days ago i bought a new battery, an unbranded one (cost me 15€ here in Portugal). The shop had a legit LG battery for 37.50€ but i tought it wasnt worth the money. This battery has the same specs as the original, except it is 1300mAh compared to the 1500mAh of the original.
I dont have any battery related problem any more. Yesterday i woke up (100% battery), unplugged the phone, let the wireless on all morning, listened to 2-3 hours worth of tunes, browsed the web a bit, tested some messaging apps etc. Today i woke up, didnt charge during the night, and im sitting on 45% battery. Wish i had gotten a new battery sooner lol
With my old battery the phone wouldnt shutdown. It would always automatically restart. I had no ideia a malfunctioning battery could cause this.

I've have had similar problems with the battery on my GT540 with all cyanogenmods - 2.3.7, 4.0.4, 4.1.2. There were no such problems with original 2.1 I think it is the price for the newer versions, I can live with that, I don't have to buy new phone

Same here...battery draining very fast....tried near about 10-15 roms...bt almost same rslt
Sent from my LG-GT540 using xda premium

winkle_sharma said:
Same here...battery draining very fast....tried near about 10-15 roms...bt almost same rslt
Sent from my LG-GT540 using xda premium
Click to expand...
Click to collapse
It's normal after a couple of month of use, depends how many times you discharge your battery, remember...battery life it's very short on smarthphones.

lg gt 540 battery
Hi
I ve got LG GT OPTIMUS 540 android version- 2.1 and i have the same problem. If i dont use my phone batery can be dead in 5 hrs but if i use it 2-3hrs...my phone battery usage says android system eats 95%...is it norm or bad?

battery?

im running the stable cm7 release and my battery life is terrible. i followed the guide on the forums here on fixing your battery life, charging to 100% pull battery put back in instal battery fix etc and overnight (short 5 hour night btw) i lost over 25% of my battery life, doing nothing ! wifi off data was on but i only recieved one or two emails all night. is this normal for cm7?
i read about how people are getting 20+ hours battery life while using their phone, if i leave my charger at home and go to work my phone is DEAD halfway through and all i use it for is the occasional phone call mabye 5-10 texts throughout the day and an email or two... how can i fix this?

I read somewhere that if you flash another ROM with battery not fully charged, it messes up calibration and you have to calibrate again. I am still with stock Blur just because I read so many issues with so many people about batteries
I hope you can get it figured out.

anybody?
is anybody else having battery life issues with cm7? if not did you do something to fix it? i have no idea what to do, the phone pretty much has to be tethered to a charger or it gets drained ridiculously fast. If i hang out with a few friends and use my phone during it i literally have to stop using it after around an hour or so because the battery's about to die.
Is there a certain rom with exceptional battery life that i can try to see if mabye its a hardware related issue? i seem to remember having horrible battery life for the day? or so that i was running stock ATT gingerbread.

I use Aura 1.2.2.2 (debloat) and get average battery life. Comparable to what I got before I installed third party ROM. If you want to try that one and see if its just CM then give it a go.
I had a battery problem after flashing to CM with a previous phone (OG Droid) but it was because I flashed while I had the phone plugged into the charger. It took a while to get it back to normal.
I doubt its CM. I dont know if its something draining your battery in the background or if its a result of weird calibration due to the flash.

my battery life has never been hte greatest but recently i got it working really well
I use the latest weekly build of CM7 and here is what i did
upon fresh install:
wipe battery stats
THEN:
kill battery
charge as far as it will go
clear battery stats (use battery calibration app)
take out battery
wait to reboot(missing battery)
put it back in
let it charge for 2hrs
reboot and unplug
kill the battery
charge to 100% while off (no interuptions)
Enjoy!
i have found that the more cycles my battery goes through 100-0-100
the better it gets
these steps almost tripled my battery life (along with Weekly 3)

there is a bug some people report with CM7 about the suspend process. (i have it, you can search "suspend" in the CM7 thread and see others are as well) load up the app betterbatterystats (there is a thread on xda that has the apk) and see if you have that bug.

I'm on nightly 20 having good battery life
Sent from my MB860 using xda premium

I'm a victim of the suspend process bug
had to flash something else, using ALIEN for now and battery is pretty good
Sent from my MB860 using XDA App

i installed betterybatterystats as you guys recommended and im not entirely sure how to read it but the suspend process shows at the top of the list so i assume thats the process which is eating up my battery? Is there a fix for this? i do like cm7 but if its the rom which is causing my battery life issues ill have to wave goodbye. Does this suspend process but happen on the weekly / nightly builds as well?

I was having horrible battery life as well. I froze some apps that I downloaded from the market and that helped a little bit but what gave me 20+ hours of battery life is the new UK orange Radio that has recently been released. I wanted to flash it since I am using an Orange UK phone and see if it improves my wifi connection, etc....
Reddy flashing a radio appropriate to your device and see if it helps.
Sent from my MB860 using XDA App

I had it on stable, and am on weekly 3 right now. I'm probably going to switch back to a blur rom soon..
Sent from my MB860 using XDA App

My battery blows with CM7. My phone has the suspend bug and nothing fixes it. I tried a fastboot wipe and clean install of the latest stable as well as nightly #20. I've tried several kernels, I'm currently running a screen off profile of 216-216 on the 1.0ghz kernel and I'm undervolted to the max just to make it thru the day.
I'm getting the nexus prime or the iPhone 5 next... which ever is released first.
Sent from my MB860 using XDA Premium App

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.
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Click to collapse
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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'
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Got the same here, very strange, on CM7
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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).
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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.
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---------- 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.
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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