Database Develop

Captivate Battery Issue Investigation

I am starting this thread so folks that are having batery life issues on their Captiates can post their findings.
Captivate users are getting mixed battery life with the stock and custom ROMs. Let's see if we can't get the problem narrowed down. Whether it's an issue with Battery Stats or possible a bad batch of batteries, whatever the case let's get this settled and resolved once and for all.
When posting, please include some basics about your device. We all know it's a Captivate, this is the Captivate forum, duh! But let's include ROM name, if custom, use STOCK for Stock. Date stamp on your battery, any custom apps and your basic settings.
Let's narrow this down.
Thanks.
Steven Perry

Prsonally I am running Cognition 2.2 Beta 7. Have had the same problem with all prior ROMs as well as stock.
Have tried completely draining, recharging with device off, reset battery stats. No luck, same result. I leave the house at 5:30a, am down to 70% by the time I get to work. By 5:00p it's dead if I don't plug it in.
My next step is to try buying a new battery. See if that helps.
Anyone have any other ideas?
I am running Cognition 2.2 Beta 7.
Battery Date: Aug. 1, 2010
Steven Perry

Running Tally (I will keep this as upto date as possible)
ROMs
Stock: 1
Cognition: 1
Cognition 2.2 Beta 6: 2
Cognition 2.2 beta 7: 2
Doc's ROMMod: 1
Battery Dates
August 1, 2010

http://forum.xda-developers.com/showthread.php?t=806211
These always are the same no matter what device i have lol. Same topics always pop up

I have used the idea of draining battery completely and then plugging it in and letting it charge overnight powered off. Worked great for me.
Sent from my SAMSUNG-SGH-I897 using XDA App

Oh sorry. Cognition 2.2 beta6 ucji6
Sent from my SAMSUNG-SGH-I897 using XDA App

I tried that, no luck for me.

I had the same issue earlier.
I noticed that my battery life came back to normal once I stopped using ADW and disabled automatic sync for my corporate (exchange ) email account in @email.
(I am currently using TW Launcher with Cognition 2.2 Beta 6).

I can get on avg. 12-18hrs of battery life... with light use.
For my everyday typical type of usage? About 10hrs with moderate usage.
But.. let's say I'm stuck in a waiting room somewhere for a few hours? With heavy use - even with the screen dimmed - I can get 4hrs out of the device.
Bottom line.. no matter how hard I tweak this thing - the display just eats the battery like a fat kid at an all-you-can-eat buffet. So I just keep it hooked up whenever I'm at a computer... which is my job so quite a bit

My first captivate stock, I was easily getting 18-24 hours.
After having it replaced with another one, I'm getting less than 8 hours.
The only differences is that the second one was updated to JH7 using Samsung Kies

stevenperry said:
Prsonally I am running Cognition 2.2 Beta 7. Have had the same problem with all prior ROMs as well as stock.
Have tried completely draining, recharging with device off, reset battery stats. No luck, same result. I leave the house at 5:30a, am down to 70% by the time I get to work. By 5:00p it's dead if I don't plug it in.
My next step is to try buying a new battery. See if that helps.
Anyone have any other ideas?
I am running Cognition 2.2 Beta 7.
Battery Date: Aug. 1, 2010
Steven Perry
Click to expand...
Click to collapse
Hi mate I have a galaxy s I used to get a days usage from the battery with heavy usage so I bought a 3000mah expanded one from Amazon.co.uk i haven't completely set the battery up yet it has only had one full charge and one full discharge but it lasts two days now with heavy usage games, movies and allot of web and app browsing maybe you should try one.
The battery comes with a new back cover and obviously makes the phone fatter but it is easier to hold and not really that heavy.
Sent from my GT-I9000 using XDA App

+1
It's all in the screen usage. I'm also using setCPU which helps the standby time significantly.

I have gotten a full 21 hours on this phone. But that is with probably what most would consider light usage. Maybe a few texts, some checking via XDA app, updating Facebook, playing a few games for about 30 minutes, but then when I sleep, I leave it unplugged, but turn off Wifi/Mobile Data and Autosync. When I'm at work, I leave those on. My display is always set to auto brightness, with the time out at 15 seconds.
Running Cognition 2.2 Beta 7 and I don't seem to have a dat of manufacture on these eBay batteries. My stock one is at work, so when I get there tonight, I'll update this post.
But like someone else said, I think it's all within the idea of what one calls moderate use. If I am using my phone a lot, the life goes does dramatically. My phone probably sits more than it is used, therefore that's why my battery life is so long. I'm happy with a baseline of 8-10 hours on this, since I have multiple opportunities to either plug it in, or switch to a fresh battery.

Could someone plz share ur batterystat file?
By bettery life is BAD now..
It goes down like crazy..
And fully charged in 6 hours from 0%.
I sun think this is normal status..
I tried everything but still the same..
Wanna try to copy someone's stat file to see how that works for me.
Sent from my SAMSUNG-SGH-I897 using XDA App

Battery drain on MIUI 5.2

Hi guys, I've flashed MIUI 5.2 yesterday and I didn't have time to play around with it. But I've noticed today that even when left idle, the battery drops from 100 to 84 in about 2 hours or so. All the other services are off except 3g. Plus when I fiddle around with it, the battery drop is even more noticeable. I went from darky 10.1-Miui5.2, just fyi with the default kernels on the miui page. Any suggestions on how to fix this?
Sent from my GT-I9000 using XDA App

Miui is to heavy
If u want longer life then Miui aint for u.
Miui is by far the best rom for galaxy s ever if u like to be able to change every aspect of ur phone but the more a rom can do the more juice it takes.
If u want more life and less tweakeblity then u need to use pony roms like darky or ultimate aso.
Edit : Miui bat life is slowly increased by each release (5.2 is way better then 4.1)

Yeah I've noticed that. I switched back to Darky,happy to see 16hours of battery life again. But I wouldn't hesitate to go back to miui in the future though, provided the battery life increases. Or at least until juicedefender has some effect on it
Sent from my GT-I9000 using XDA App

flashing from stock to MIUI is a painful process and it reflects on the phone too !!
after such a vigorous beating from ODIN and Recovery flashing, the phones battery needs time to settle,
Do the battery calibration a few times, generally the battery will settle after a week, Until then its hard to judge battery life, albeit it is definitely less than a stock ROM, But some MIUI users report 1 day, some report short of 3 days..
so dont give up just yet

azzledazzle said:
flashing from stock to MIUI is a painful process and it reflects on the phone too !!
after such a vigorous beating from ODIN and Recovery flashing, the phones battery needs time to settle,
Do the battery calibration a few times, generally the battery will settle after a week, Until then its hard to judge battery life, albeit it is definitely less than a stock ROM, But some MIUI users report 1 day, some report short of 3 days..
so dont give up just yet
Click to expand...
Click to collapse
wow 3 days? imma try it again then, right after my battery finishes charging. what kernel do you think is the most ideal one to use? i live in the uk
Edit: I saw a guy getting 14% loss after 12 hours using JXJV6. Isn't JXJV6 a modem for the middle east? Is it possible for me to use it here in the uk?

farisiylia said:
wow 3 days? imma try it again then, right after my battery finishes charging. what kernel do you think is the most ideal one to use? i live in the uk
Edit: I saw a guy getting 14% loss after 12 hours using JXJV6. Isn't JXJV6 a modem for the middle east? Is it possible for me to use it here in the uk?
Click to expand...
Click to collapse
im not sure about that modem, but i dont see why it wont work, i use at the moment ZSJV5 - i am in the uk too, that modem works fine for me .
As for the kernel, the latest Glitch V10 is good enough, you could also maybe undervolt and underclock just a little, this would increase battery life too.
but 2 -3 full cycle charges really makes a huge difference.

Awesome, I'll try that soon. Mind sharing the link for ZSJV5? And the app for undervolt and underclocking?
Edit: It seems that I have the insufficient storage space bug, I've read the faqs,
1.3 Apps not installing - Not enough memory message pop up (Known bug for CM7/MIUI)
1. (Using root explorer or any equivalent app) Delete folder /data/data
2. Copy "folder" /datadata to /data/
3. Change name of folder /data/datadata to /data/data/
But it still doesnt work. If I reboot, I have to go through the setup wizard again, and rootexplorer will be uninstalled. Any idea how to fix this as well?

Battery drain after installing MIUI

Hi, I recently installed MIUI 3 and seem to be getting some problems with battery life.
What I've done so far:-
-Installed MIUI 3 with the SpeedMod kernal (as directed in the manual). Battery life dropped to 12hrs
-Reset battery stats, no change
-Installed MIUI 3.3. Battery went back up to ~30hrs
I thought 3.3 fixed it but after a day the battery life dropped by half. After another day it dropped by half again. Now it's only lasting 6hrs, and when on charge it doesn't reach 100% charged but stays at 98% even overnight.
What is going on with this thing?

Half of MIUI threads is about battery drain. There is no solution until now.

yken said:
Half of MIUI threads is about battery drain. There is no solution until now.
Click to expand...
Click to collapse
They're all like 1 year old. The battery was supposedly fixed in the latest release, and I know someone with the same phone, using MIUI, and they don't have this problem.
I think it might be something to do with the speedmod kernel. I don't know anything about the compatibility of kernels and MIUI so i just followed the instructions in the manual and used speedmod

I don't really know what's going on... in my phone the battery lasts for around 60 hours, maybe more, whatever rom/kernel I've used...
I've been using all of galnet's muiu and still have to find a battery issue. In my particular case, I don't use GPS, so it's off all the time. I don't think that's the issue though...

It's a known issue of CM7/MIUI.
no solution at the moment

Sorry but what is CM7?
And if there's no solution, how can someone with the same model phone not have the same issue?...

MIUI has battery problem and its not solved. If you disable data, gps, sync...
it saves some.

I will look into that and try to help!

jguedj said:
I will look into that and try to help!
Click to expand...
Click to collapse
The 5th thread you have posted this reply to in the last 2 hours?! Why?!
Sent from my GT-I9000 using XDA Premium App

So everyone using MIUI puts up with a battery only lasting 6 hours and my friend is lying to me? >_>
btw disabling data doesn't make that much difference.

madcap_ said:
So everyone using MIUI puts up with a battery only lasting 6 hours and my friend is lying to me? >_>
btw disabling data doesn't make that much difference.
Click to expand...
Click to collapse
I think that this is as much a cm7 thing, as anything else, and most people just tweak and seek til they find a combination of things that work, so worth looking in rhe relevant threads and reading back
Sent from my GT-I9000 using XDA Premium App

Well for anyone interested I found the problem. I tried flashing with the latest SpeedMod kernel, phone wouldn't boot, and I had to reflash the entire bootloader with MIUI's modified Froyo
Now the problem I noticed when I went to install MIUI.. the zip on my phone was 2.2 instead of 3.2.
NFI how I ended up with that outdated version! So the latest 3.3 seems to have fixed it now. Phone has been on for almost 20 hours and only dropped 30% in battery. That's more like it.
Although this did happen the first time, it seemed OK and then kept dropping by half capacity each day.. But if I really was somehow using 2.2 then hopefully that's all it was

I found out yesterday that my phone doesnt really go idle because of some google process waking my phone notoriously, and probably thats why it uses more battery. I also have very week signal (only 3g) which makes my phone use more battery than normal, but on non cm7 roms i made it one day with no problem. Right now I'm on galnet's miui and this is really fantastic rom, but battery wont last one day in my case. So the idle problem is the case i think... yesterday I closed gapps process before i went to sleep, and my phone was sleeping nicely too This process is caused by android market, and miui doesnt close it up. I also freezed gmaps - someone in galnets thread said it also drains battery. Well I'll see in few days how the battery will behave.

madcap_ said:
Hi, I recently installed MIUI 3 and seem to be getting some problems with battery life.
What I've done so far:-
-Installed MIUI 3 with the SpeedMod kernal (as directed in the manual). Battery life dropped to 12hrs
-Reset battery stats, no change
-Installed MIUI 3.3. Battery went back up to ~30hrs
I thought 3.3 fixed it but after a day the battery life dropped by half. After another day it dropped by half again. Now it's only lasting 6hrs, and when on charge it doesn't reach 100% charged but stays at 98% even overnight.
What is going on with this thing?
Click to expand...
Click to collapse
Also Battery Calibration.apk (can be found in market) works to calibrate your battery properly.

56hrs without recharging, 22% battery still remaining. So clearly it's not a problem with CM or MIUI any more

I have exactly the same problem.. tried the battery callibration app..also tried the wipe battery stats article.. i ve finished recharging 100% 2hours ago... now my phone is 55%..no gps no games.. 2 phone calls for 2min each.. i love the rom and hate the battery
sgs i9000..miui v4 with its kernel

madcap_ said:
56hrs without recharging, 22% battery still remaining. So clearly it's not a problem with CM or MIUI any more
Click to expand...
Click to collapse
HOW??????????????????

Poor Battery Life On Overcome Jupiter

Hi,
I don't have sufficient posts to be able to participate directly in that forum, so have no other choice but to raise my queries here.
I've just flashed over from Overcome "Hermes" to "Jupiter". All's well except that the battery performance is quite drastically affected for me.
I've been reading the improved battery life "Jupiter" gets over earlier versions of the Overcome ROMs, but I seem to be experiencing the opposite.
Already did the batt stat wipe via recovery menu. Do I need to so call "run-in" before it reflects correctly? Even if accuracy is one thing... but dropping 3% just on bootup.... is this typical of an uncalibrated battery?
Appreciate any advise here on what I should do. (Apart from a fresh wipe install )
Thanks

I appreciate the enthusiasm these coding geniuses have in rolling out update after updates in the ROMS yet I am apprehensive about the effect of these frequent flashing on the Galaxy Tab components itself. This includes the battery.
My job involves electronic repair and there is a so called number of hours before an equipment goes for a thorough check(preventive maintenance) say for example 1000 hours on a meter. Unfortunately the galaxy tab (or any tablet) does not have this. So if you frequently do a flashing on your tab you subject the electronic components to unnecessary stress,thereby affecting the life of the components like the battery.
In "normal" everyday use of the tab you will seldom do any restart/reboot of your tab,yet in flashing ROMs as many as 3 reboots is needed. As I don't know how to measure the surge in current during reboot, I can just imagine how high an initial current during startup is generated, thus putting a big strain on the battery.
Unfortunately the battery is not user detachable.
There was an author here in XDA describing himself/herself as an "flashing addict"(or something similar). I would like to appeal to everyone-please don't be a flashing addict.
As for battery issue read here
JUST MY FEW CENTS!

PCdumb said:
Hi,
I don't have sufficient posts to be able to participate directly in that forum, so have no other choice but to raise my queries here.
I've just flashed over from Overcome "Hermes" to "Jupiter". All's well except that the battery performance is quite drastically affected for me.
I've been reading the improved battery life "Jupiter" gets over earlier versions of the Overcome ROMs, but I seem to be experiencing the opposite.
Already did the batt stat wipe via recovery menu. Do I need to so call "run-in" before it reflects correctly? Even if accuracy is one thing... but dropping 3% just on bootup.... is this typical of an uncalibrated battery?
Appreciate any advise here on what I should do. (Apart from a fresh wipe install )
Thanks
Click to expand...
Click to collapse
According to the Tweaks section at the team overcome website, it will take several charge cycles before you notice an improvement after the stat wipe. Try giving it a few days before going any further.
PS Not to question your ability to follow instructions (sometimes we miss things) but did you charge to 100% with the tab off?

Yes, I did charge to 100% with the Tab off.
Now upon reading the instructions once more..... I might have conducted it slightly different from the written procedure.
I unplugged the Tab from the mains, then only booted up and wiped the batt stats before re-booting. Hmmm.... maybe I'll go try booting up while still plugged into the mains, do the batt stat wipe, and re-boot. (all while plugged into the mains). Then only unplug the charger.
Wonder is there any diff in doing so.....

Would definitely try re-doing it with the tab plugged in while doing the stat wipe. And if it doesn't seem to fix it, do go through a few cycles before reverting back to a previous ROM.
It's important to completely drain your battery before recharging it to 100% in order to complete a cycle.
Hope you fix it. Battery life results vary between tab's even if they are used very similarly, I'm running the OVERCOME Jupiter ROM with IMPROVED battery life. I keep my Bluetooth, Wifi and GPS on all the time. I also flash quite often and have not seen a decrease in overall battery life. It seams that each tab is a bit different, hardware wise, than one another. Everything from battery to board it seems is slightly different coming out of the manufacturing process.

Thanks. Will try that out.
But it just seems strange coming from Overcome ver 1.4 (Froyo) which had no batt drain problem.... to Hermes which was better in batt performance.... to Jupiter which I'm experiencing heavy drain.
As I did a NoWipe install, all apps and setting are similar (except the new market app).
I was able to run 2 movies back to back (about 3 hours total) and still have at least 40% life left (usually about 45 to 50%). Now on Jupiter, just fiddling around testing the various features for functionality, plus maybe an hour of NFS (total about 3 hours as well).... the batt drops to about 10% life.
Anyway, I'll re-do the calibration and and give it some time to "settle in". Hopefully, that is all that is needed. (I would hate to have to do a full wipe install... and re-installing all apps)

PCdumb said:
Thanks. Will try that out.
But it just seems strange coming from Overcome ver 1.4 (Froyo) which had no batt drain problem.... to Hermes which was better in batt performance.... to Jupiter which I'm experiencing heavy drain.
As I did a NoWipe install, all apps and setting are similar (except the new market app).
I was able to run 2 movies back to back (about 3 hours total) and still have at least 40% life left (usually about 45 to 50%). Now on Jupiter, just fiddling around testing the various features for functionality, plus maybe an hour of NFS (total about 3 hours as well).... the batt drops to about 10% life.
Anyway, I'll re-do the calibration and and give it some time to "settle in". Hopefully, that is all that is needed. (I would hate to have to do a full wipe install... and re-installing all apps)
Click to expand...
Click to collapse
As mentioned in the Tweaks section, perform the Stat wipe and then two full recharge cycle
recharge to 100% (while the Tab is closed) then drain the battery till it is off then repeat the cycle and you will enjoy it man
Please tell me if you need anything

bongski55 said:
I appreciate the enthusiasm these coding geniuses have in rolling out update after updates in the ROMS yet I am apprehensive about the effect of these frequent flashing on the Galaxy Tab components itself. This includes the battery.
My job involves electronic repair and there is a so called number of hours before an equipment goes for a thorough check(preventive maintenance) say for example 1000 hours on a meter. Unfortunately the galaxy tab (or any tablet) does not have this. So if you frequently do a flashing on your tab you subject the electronic components to unnecessary stress,thereby affecting the life of the components like the battery.
In "normal" everyday use of the tab you will seldom do any restart/reboot of your tab,yet in flashing ROMs as many as 3 reboots is needed. As I don't know how to measure the surge in current during reboot, I can just imagine how high an initial current during startup is generated, thus putting a big strain on the battery.
Unfortunately the battery is not user detachable.
There was an author here in XDA describing himself/herself as an "flashing addict"(or something similar). I would like to appeal to everyone-please don't be a flashing addict.
As for battery issue read here
JUST MY FEW CENTS!
Click to expand...
Click to collapse
where you were hiding this all ? i bet you were so damn angry to say all of this , i never saw you writing more than 3-4 lines , chill out buddy .
@The OP flashing custom roms means battery need to re-life back

bongski55 said:
I appreciate the enthusiasm these coding geniuses have in rolling out update after updates in the ROMS yet I am apprehensive about the effect of these frequent flashing on the Galaxy Tab components itself. This includes the battery.
My job involves electronic repair and there is a so called number of hours before an equipment goes for a thorough check(preventive maintenance) say for example 1000 hours on a meter. Unfortunately the galaxy tab (or any tablet) does not have this. So if you frequently do a flashing on your tab you subject the electronic components to unnecessary stress,thereby affecting the life of the components like the battery.
In "normal" everyday use of the tab you will seldom do any restart/reboot of your tab,yet in flashing ROMs as many as 3 reboots is needed. As I don't know how to measure the surge in current during reboot, I can just imagine how high an initial current during startup is generated, thus putting a big strain on the battery.
Unfortunately the battery is not user detachable.
There was an author here in XDA describing himself/herself as an "flashing addict"(or something similar). I would like to appeal to everyone-please don't be a flashing addict.
As for battery issue read here
JUST MY FEW CENTS!
Click to expand...
Click to collapse
Viewed purely from an engineering perspective, I'm unable to see any significant connection between the flashing of the ROM and a degradation of battery capacity. Further, in the event that the TAB was connected to a charger during the flashing, I can see absolutely no connection at all! Please help me understand your logic.

Ok Back on topic. PCdumb (dude what's with the username lol). Check your app list. It could a new app you or an old app you updated or an app you didnt use before but you use now that is being a battery hog. A small trick I learned is checking apps running services in the background. Go to Settings, applications, running services and check (why is skype working after Isigned out its not a battery drainer but I hope you got the picture).

Thanks for the advise. That was one of the 1st few things I did to check that there's nothing out of the ordinary running in the background and taking up the juice.
Mine's actually draining alot when in usage. Not too sure about when in standby.... will check later.
If after a few charge cycles and the drain is still bad, guess my only next best option is to do a full wipe, re-stock and re-install.....

I did not get any effect from Battery calibration. As expeced. Anybody did actually?
The background services instead might have an effect on power consumption, I agree. But needs numerous testing...

Batt recal did not give me better battery life. There's no difference in the battery performance after 3 recharge cycles.
My tab can at most get slightly more than 5 hours of continuous usage compared to about close to 7 hours on hermes. This is when i dial down the OC from smartass mode to conservative and also put the min freq to 200 instead of 400 which was the setting i was using all the while.
Doesn't seem to be anything else running in the background. On standby overnight, i only lose about 3% which is not too bad. But when in use, that's where the Batt drains fast. Just for comparison, i only lost 1% at most for overnight standby of about 7 hours when running hermes.
Guess I'll have to live with this if i want the speed and smoothness. Still contemplating whether to restock and do a clean flash.

PCdumb said:
Batt recal did not give me better battery life. There's no difference in the battery performance after 3 recharge cycles.
My tab can at most get slightly more than 5 hours of continuous usage compared to about close to 7 hours on hermes. This is when i dial down the OC from smartass mode to conservative and also put the min freq to 200 instead of 400 which was the setting i was using all the while.
Doesn't seem to be anything else running in the background. On standby overnight, i only lose about 3% which is not too bad. But when in use, that's where the Batt drains fast. Just for comparison, i only lost 1% at most for overnight standby of about 7 hours when running hermes.
Guess I'll have to live with this if i want the speed and smoothness. Still contemplating whether to restock and do a clean flash.
Click to expand...
Click to collapse
If you want to confirm that JUPITER is the reason that you are experiencing poor battery life, try re-installing a previous version that you feel worked better for you. Maybe reverting back to a previous version may yield better battery results, and I sure hope so, this way you will know if it's the ROM or other elements affecting the abnormal battery drain.
If you do see an increase in battery life, try flashing JUPITER again, see what the results are. I don't know if flashing and re-flashing will have a negative long term effect on your SGT, I know that I flash every time a new release is out (Stock safe, cooked ROM, Kernel) and if i'm not happy with the release i go back to a proven one by flashing another three times (stock safe, cooked ROM, Kernel) and so far I have not had any (knock on wood) abnormal battery activity.
It's worth giving it a shot (if you haven't already).
EDIT: I know, I know the proper sequence is stock safe, kernel, rom.

after week of using the Overcome ROM i can confirm that the battery performance is between 85 and 90% from the Orignial stock ROM performance
No problem since this is normal as we are using a cooked ROM

bongski55 said:
I appreciate the enthusiasm these coding geniuses have in rolling out update after updates in the ROMS yet I am apprehensive about the effect of these frequent flashing on the Galaxy Tab components itself. This includes the battery.
My job involves electronic repair and there is a so called number of hours before an equipment goes for a thorough check(preventive maintenance) say for example 1000 hours on a meter. Unfortunately the galaxy tab (or any tablet) does not have this. So if you frequently do a flashing on your tab you subject the electronic components to unnecessary stress,thereby affecting the life of the components like the battery.
In "normal" everyday use of the tab you will seldom do any restart/reboot of your tab,yet in flashing ROMs as many as 3 reboots is needed. As I don't know how to measure the surge in current during reboot, I can just imagine how high an initial current during startup is generated, thus putting a big strain on the battery.
Unfortunately the battery is not user detachable.
There was an author here in XDA describing himself/herself as an "flashing addict"(or something similar). I would like to appeal to everyone-please don't be a flashing addict.
As for battery issue read here
JUST MY FEW CENTS!
Click to expand...
Click to collapse
WOW ! This was an eye opener for me...
Thanks for clarifying this...... I didn't know this was so bad for the hardware ....
Sent from my GT-I9003 using Tapatalk

PCdumb said:
Batt recal did not give me better battery life. There's no difference in the battery performance after 3 recharge cycles.
My tab can at most get slightly more than 5 hours of continuous usage compared to about close to 7 hours on hermes. This is when i dial down the OC from smartass mode to conservative and also put the min freq to 200 instead of 400 which was the setting i was using all the while.
Doesn't seem to be anything else running in the background. On standby overnight, i only lose about 3% which is not too bad. But when in use, that's where the Batt drains fast. Just for comparison, i only lost 1% at most for overnight standby of about 7 hours when running hermes.
Guess I'll have to live with this if i want the speed and smoothness. Still contemplating whether to restock and do a clean flash.
Click to expand...
Click to collapse
After reading all this superb discussion....
I would just recommend you to go back to your older rom.....
Its forbthe best....
Sent from my GT-I9003 using Tapatalk

I do get 4 to 5 hours of continuous use with overcome Jupiter, mostly browsing the web over
WLAN or umts. Hermes release didn't gave me so much more juice, probably 5 hours.
In the background I have emai push, contacts and calendar sync and some instant messaging apps, if I switch off all that I might get an hour or so more.

PCdumb said:
...On standby overnight, i only lose about 3% which is not too bad. But when in use, that's where the Batt drains fast. Just for comparison, i only lost 1% at most for overnight standby of about 7 hours when running hermes...
Click to expand...
Click to collapse
Wow, maybe your tab is one of the ones with a battery from the bad batch, and it's finally on its way out. I upgraded from the stock AT&T Rom to Overcome Jupiter, and on Airplane Mode with all stock settings (no overclock or undervolt), mine only drops 1% in standby over 14 hours and I can get about 5 hours of video watching straight with the brightness on max before it dies!

DarkPal said:
A small trick I learned is checking apps running services in the background. Go to Settings, applications, running services and check (why is skype working after Isigned out its not a battery drainer but I hope you got the picture).
Click to expand...
Click to collapse
I also been experiencing a major increase in battery drain even after doing a couple wipes exactly according to the tweak guide. I went from about 24 hour normal use down to 6-8 hours normal use.
Checked the services as per your suggestion above and found a couple major battery drainers running. Skype and Yahoo but also Google+. What I dont understand is why Skype and Yahoo would be running even though I had not started either since at least several re-boots ago. I had Skype and Yahoo installed for quite a while Google+ is a new one. Anyway I killed all of them and now and will see what happens next.
Not sure thought that this is all there is to the issue. Recahrging is finiky as well. I can turn off the tab and let it charge all night just to find that it charged to about 70% if I re-plug it might charge to 90%-95% and then if re-plug it might get to 100%. The drain from 100% to 60%-70% is extremely fast and still quite fast from there. On one occasion after complete drain I couldnt get it to start charging at all for about 5-10 minutes. I was checking power, cables, connections and starting to panic when all of a sudden it started to charge.
Any advice on possible reasons or solution woud be appreciated. Not sure I want to go beck to stock ROM and un-root just to take it to service center for repairs.

[Q] Battery health

Hi, I would like to know the best way to measure my battery health. For about a month my battery starts to drain fast. I know my phone is already old and battery don't handle the same charge, but I have recharged the phone all night long and in ten minutes using wifi to just update some apps the battery just gone.
It is just ridiculous as I don't use any different configuration.
To be more specific, my phone configurations are:
- Cyanogenmod 7.2 by vo-1 (31/06/2012) deodexed by me;
- Firekernel Unnoficial OC (22/07/2012), CPU governor: smartassv2, max 787, min 245;
- Adrenaline Engine 4.2b;
One more thing. I was facing the same problem with blackhawk kernel.
I just think a battery can't die a sudden.
Could anyone help me with this?

Floydroider said:
Hi, I would like to know the best way to measure my battery health. For about a month my battery starts to drain fast. I know my phone is already old and battery don't handle the same charge, but I have recharged the phone all night long and in ten minutes using wifi to just update some apps the battery just gone.
It is just ridiculous as I don't use any different configuration.
To be more specific, my phone configurations are:
- Cyanogenmod 7.2 by vo-1 (31/06/2012) deodexed by me;
- Firekernel Unnoficial OC (22/07/2012), CPU governor: smartassv2, max 787, min 245;
- Adrenaline Engine 4.2b;
One more thing. I was facing the same problem with blackhawk kernel.
I just think a battery can't die a sudden.
Could anyone help me with this?
Click to expand...
Click to collapse
There are a few things that can be causing this, but the first thing that you can try is to wipe your battery stats using "BatteryCalibration" app. After flashing a few things, it's best to do this. I had the same thing happen after flashing my third ROM or so.
After that, it basically comes down to the apps and widgets that you have running. Shut them off with a task manager so they don't end up draining your battery, but it might not be that either....
The only other thing that I can think of is that I heard in another thread (I really wish that I could find it again ) that the ace has a motherboard fault that causes it to drain faster than usual.
Other than that, all I can say is that the Ace generally has poor battery life, and it really does suck, but I don't really know how much more you can do. You could try flashing a stock-light ROM and see if it does the same thing (wipe battery stats too). But I would say is that you should try wiping the stats and see if anything changes.... Other than that.... I`m out. Hopefully it helps, and if it doesn`t, you might need to take it in (Service Center or wherever you bought the phone).
Maybe try searching in other threads (as it is a common problem) but besides that, goodluck :fingers-crossed:

thatdude02 said:
There are a few things that can be causing this, but the first thing that you can try is to wipe your battery stats using "BatteryCalibration" app. After flashing a few things, it's best to do this. I had the same thing happen after flashing my third ROM or so.
Click to expand...
Click to collapse
I forgot to mention but I already did the calibration, using the app and manually to see if I could get different results.
I even tried to force a better charge, charging the phone off, waiting till 100%, unplugging and recharging, till the phone gets 100% again.
Ace's battery isn't good, but a month ago my phone was holding 12-14 hours without charge, using wifi a lot, that's why I think something is wrong.
Well, I'm flashing the original stock rom to see if get some change.
Thanks about the motherboard information, this is new for me :good:
Gonna see tomorrow if the battery holds better with the original stock ROM.
Thanks again!

Wiping the battery stats is a myth. All it does it clear the battery usage screen!
Android has a built in tool which can try to check the health of your battery.
Open the dialer
type *#*#4636#*#*
then go to battery information
Look at battery health.

Feedback
Just to give a feedback, my battery was really damaged. I bought a new one, stock because I didn't find other, and the phone now easily last a day, even using wifi a lot.
But that's not the only reason why I posting here again, I want to share how my old battery is. Comparing with new one, I realized that the old battery had stuffed something about 5 mm
If you pay attention, you'll see the small deformation.
Don't know yet what could have cause this, but I think it was heat and bad recharges...
Thanks for the help :good:

Floydroider said:
Just to give a feedback, my battery was really damaged. I bought a new one, stock because I didn't find other, and the phone now easily last a day, even using wifi a lot.
But that's not the only reason why I posting here again, I want to share how my old battery is. Comparing with new one, I realized that the old battery had stuffed something about 5 mm
If you pay attention, you'll see the small deformation.
Don't know yet what could have cause this, but I think it was heat and bad recharges...
Thanks for the help :good:
Click to expand...
Click to collapse
I'd recommend you to use SetCPU to prevent this on your new battery. Set up a profile with sound notification when it hits around 40degree, and underclock it at the same time.

I faced a similar problem. Battery was hardly six months old when it died but it was my fault. I was running a wi-fi tether and continuously charging it for about two days. :silly:
Got a new one under warranty. Been a year with the new battery and just recently facing problems with it. 3G just sucks the life out of it.

OK I just got 3g on my phone (yay for promotional 6gb plans!). But yeah, the 3g definitely kills my battery. I used to be able to go two or three days with very little use. Now I can only go one day even with standby with my 3g enabled. As long as I can put my phone on to charge before it dies, its all good to me
Finally with my 3g going, I understand everyone else's pain with the battery life haha
Sent from my GT-S5830 using xda premium