Develop Bugs

[Q] Seriously? Cyanogen ROM kills battery like this?

I have done a bunch of reading since my first flash to Cyanogen's 6.1 but not finding really satisfactory answers.
With the old rooted stock deodexed...I was getting about 14-15hrs of moderate-high use. So basically I pulled the cord at around 7am and plugged back in around 6pm with about 40%.
Was fine.
Flashed 6.1 last night and now I am two hours off charge and sitting at 58%!! I have all syncs turned off and I have no wifi/gps/4g running. The ONLY widget at the moment is weather and it only updates when I hit refresh.
My search has shown something called battery calibration...but that doesn't make sense to me. I have done the long charge, power off charge, power on charge etc... But since I have a wall battery charger I have just moved away from that and occasionally swap out my batteries for a full charge in that thing.
Does that 6.1 REALLY need another voodoo approach to battery life? Also the threads I have found seem to be for the nexus one or the HTC Magic(?).
Anyone else suffering HORRIBLE battery life after flashing 6.1?
Anyone got a link to a fix for the EVO and maybe something that I can get through the day with (do not have my charger at work)?

When I flashed CM7 to my wife's phone the battery was horrible (Less than 2 hours). I recalibrated the battery and the next charge lasted 2 days. Give this a try:
Battery recalibration
If you're experiencing higher than normal battery drain, try the following:
Charge the device to full battery; let it keep charging until the battery says it is fully charged. Do not just wait until the light is green, it isn't always fully charged, causing a lot of inaccuracies. (You can check by going to: Settings -> About device -> Status -> Battery Level = Full.)
Boot to recovery mode and delete the battery stats
NOTE: To have the most accurate of battery stats, reboot the device immediately after wiping the battery stats and wait for CyanogenMod to boot completely to the desktop. Once your entire boot is done and you have full access to the device, go ahead and pull the charger and continue with this troubleshooter.
Do not charge the device until after draining the battery completely, resulting in it automatically shutting off.
Recharge the device completely and then use as you normally would.
Also, CM6.1 or CM7 should get decent battery life. If it still doesn't try flashing a different kernal. I found that savaged zen bfs sbc kernal extended my life considerably.

sablesurfer said:
I have done a bunch of reading since my first flash to Cyanogen's 6.1 but not finding really satisfactory answers.
With the old rooted stock deodexed...I was getting about 14-15hrs of moderate-high use. So basically I pulled the cord at around 7am and plugged back in around 6pm with about 40%.
Was fine.
Flashed 6.1 last night and now I am two hours off charge and sitting at 58%!! I have all syncs turned off and I have no wifi/gps/4g running. The ONLY widget at the moment is weather and it only updates when I hit refresh.
My search has shown something called battery calibration...but that doesn't make sense to me. I have done the long charge, power off charge, power on charge etc... But since I have a wall battery charger I have just moved away from that and occasionally swap out my batteries for a full charge in that thing.
Does that 6.1 REALLY need another voodoo approach to battery life? Also the threads I have found seem to be for the nexus one or the HTC Magic(?).
Anyone else suffering HORRIBLE battery life after flashing 6.1?
Anyone got a link to a fix for the EVO and maybe something that I can get through the day with (do not have my charger at work)?
Click to expand...
Click to collapse
Thats a old cm, cm is now cm 7... maybe try that one..
Sent from my PC36100 using XDA Premium App

Yea Cm6 is dated. But that shouldn't matter.. I actually had fantactic battery when I was on cm6, much better than what I get on cm7.
First, check spare parts for wakelocks and make sure you don't have any. After that, follow Fazulkas advice to reset battery stats, follow it correctly tho. I never thought wiping stats would make a difference, but it surely does.

Ok, I'll try that process when I get home tonight. (Guess I can survive w/o a phone for a few hours?!?! :^O) Haven't set up more than just the google account on this ROM as I wanted to test it first. So maybe tomorrow it will win me over.

DATED?!?! LOL! It was only just a final release a few months back...;^) It has all the important stuff working where as 7 doesn't and it is still a RC.
:^P
(Have you seen my sig? Old dogs only try the proven tricks thank you very much. :^)

CM6 is not dated. In fact CM 6.1.3 is the most current stable-release version of CM available!
Sent from my PC36100 using XDA App

Its not the ROM. Anytime you flash a ROM, you need to calibrate your battery. By calibrate it isn't the plug in over and over method.
You charge to 100%, discharge it fully. Charge back to 100% then wipe battery stats in recovery. Then use your phone.

Flashed 6.1 last night
Click to expand...
Click to collapse
There is your problem. Anytime you flash a new rom, you need to give it at least a day or two to fully calibrate everything in the rom.

sekigah84 said:
Its not the ROM. Anytime you flash a ROM, you need to calibrate your battery. By calibrate it isn't the plug in over and over method.
You charge to 100%, discharge it fully. Charge back to 100% then wipe battery stats in recovery. Then use your phone.
Click to expand...
Click to collapse
HUH...this is my fourth ROM flash, first one away from stock rooted and I have never had this issue. Maybe the stock ROMs do not have this issue?

[Q] Battery Drain - Yet another whining thread - CM7.2

Hello all together
I'm browsing xda for a little more than a year now. You guys helped me a lot!
First I want to apology my english, I hope you understand what I want to say
Not a long time ago the battery of my WFS lasted up to 3 days (incredible if I think of it now).
That was with a self rooted stock rom and some changes (bravia, turboboost script, oc-kernel, etc.).
Out of nowhere I had problems with my calendar.sync.provider. Processes htc.bg and htc.bgp used the most of my battery (found out with Battery Mix).
I could watch the percent falling... Battery was getting very hot.
After i killed calendar.provider and calendar itself those bg-processes disappeared and all went back to normal.
Installed m1nd's rom, tried a lot of different settings, used calengoo instead of normal calendar (uninstalled the other)...
But battery life was never the same since then.
We also had a really rough winter and I was outside a lot. my battery began to drain faster. First I began to install apps like "auto wifi toggle" to stop that battery drain, after all I just bought a new battery this spring - 1500mAh.
But other than i expected - battery life did not increase. So I decided to install CM7.2 (wanted to do it anyway - great work btw!).
And guess what, nothing changed...
You will find some screenshots at the end... (did barely use the phone this 4 hours)
So what can I do? I'm desperate. The battery does not hold the whole day...
Please give me some tipps (if you have others than the general battery saving thread) or at least cheer me up
tl;dr: Phone works for 10h (mail,text, no phones, no games) - Changing battery & ROM does not fix battery drain...
Thank you in advance!

it happens to me too unfortunately, i charge it everyday or every 2 days
when i play a small mini game for a few minutes, battery drains like over 10% in a few minutes.

Have you tried calibrating the battery?

Scyllax said:
Have you tried calibrating the battery?
Click to expand...
Click to collapse
No such thing, its a myth!
http://forum.xda-developers.com/showthread.php?t=1445643

Hey scilax can you please tell me how to. Calibrate the battery.
Me too get a smaller backup when 3g is used for some 3 to 4 hours.
Please tell about that calibrating
Sent from my Wildfire S using XDA

Thing is, I charge my phone everyday. And I've been using CM7 or CM9, battery life never lasts more than a day. If it's only lasting 4-10 hours. Check your sync settings. Keep it only on 2G networks if using data. Get a battery saving application, in my opinion, it sounds like your using a lot of mobile data/wifi.

Battery drains so fast

My battery seems to drain very fast.
The phone is brand new, and I'm not able of getting more than 12 hours with one charge.
I'm using lowest brightness possible, wifi ON only when needed, 3G on only when needed (The rest of the time it stands connected by EDGE, updating whatsapp and checking emails and twitts each 15 minutes), bluetooth off, gps off and autosync off.
When I'm sleeping it dischargues 3% per hour!
I have installeed juice defender, battery calibrator and battery graph.
Is this normal?
Any help?
Battery reaches 100% at 4,2V

Which Rom, kernel, etc do you use?
Sent from my HTC Desire using XDA

Thats not normal.
Maybe you should look for some apps installed, which dont let your phone fall into deep sleep....

Jeezer said:
Thats not normal.
Maybe you should look for some apps installed, which dont let your phone fall into deep sleep....
Click to expand...
Click to collapse
I had an app once called android assistance r something like that and it killed my battery. I went to bed and battery was at 94% and when i woke it was at 2%. Unistalled straight away lol. And like matdroid says, what rom u using coz sense roms aint battery friendly.
Sent from my HTC Desire

I have been testing with differents roms.
That test was done using stock 2.2 rom . Could it make that big difference?
Have installed leedroid, oxygen, sandvold 0.8 and CM7 RC2.. But haven't had time to test them properly. I hope the reason of this battery drain is the ROM .
The only program (I think) is running all the time is Whatsapp. And it works fine with EDGE. Twitter and emails are set to update each 15minutes thanks to JuiceDefender.

I`d recommend to try with a different battery, see if there is any difference.

U could also look into trying a different kernel, most roms these day come with a choice of a few kernels.
Sent from my HTC Desire

Here is the status of my battery.
Let me know if it's ok.
This was using Oxygen COS GB (17-04-2012 built)
It's in spanish (Pantalla) is screen and voz is voice.

Are you happy with that drain?

Obviusly I'm not happy. But what can I do? I have tried almost everything.
Please help.

Please post the time the display was on plus your brightness-setting.

Dear friends,
Here are the stats again,
This time it lasted more time because it included the time when I was sleeping.
See attached pictures.
The battery still drains fast.
Best regards.

I have also the same problem. Today it lasted for 8h.
I bought a new battery 2 weeks ago, so it can't be that. I've cleared battery stats with 4EXT Recovery and done also clean wipe when changed the rom to RSK 7.4.3.
Before that I had RevolutioN 4.0, but when i updated from 3.0 to 4.0, the battery problem started. I don't if it's just a coincidence. 3.0 worked perfectly, and it's a shame, that i haven't got this work ever since =7 "If it works, don't fix it"
On RSK, what i have now, i use snq kernel (installed the kernel on RSK installation).
//EDIT:
Oh yeah, and also done all the tweaking with Deamon Controller, like on the instructions what RSK wrote on first page.

My phone lasts 12 hour when I don't use massive data.
I tried different kernels and finally found that the ManU is the most battery friendly for me.
I don't use any optimization app, which I find quite useless, I just use two profiles in setcpu:
screen on: 1152 Mhz, governor performance
screen off: 422 Mhz, governor powersave
I prefer a more responsive phone than a longer battery life.

MatDrOiD said:
Please post the time the display was on plus your brightness-setting.
Click to expand...
Click to collapse
+1
Looks like your display is on all the time.

peikojose said:
Dear friends,
Here are the stats again,
This time it lasted more time because it included the time when I was sleeping.
See attached pictures.
The battery still drains fast.
Best regards.
Click to expand...
Click to collapse
First, try to turn of data connection when you're not using it.
Then try to do this:
-use your phone until you drain the battery
-turn of the phone and connect it to charger and leave it to charge 10-12 hours
-disconnect the charger, turn on the phone and use it until the battery falls down for a few percents
-turn it off again, reconnect to charger and leave it to charge for about an hour
-disconnect, boot into recovery and wipe battery stats
-turn the phone one and use it, you should notice the difference.
Sent from my HTC Desire using XDA

nlooooo said:
First, try to turn of data connection when you're not using it.
Then try to do this:
-use your phone until you drain the battery
-turn of the phone and connect it to charger and leave it to charge 10-12 hours
-disconnect the charger, turn on the phone and use it until the battery falls down for a few percents
-turn it off again, reconnect to charger and leave it to charge for about an hour
-disconnect, boot into recovery and wipe battery stats
-turn the phone one and use it, you should notice the difference.
Sent from my HTC Desire using XDA
Click to expand...
Click to collapse
Think again about the bolded part.

erklat said:
Think again about the bolded part.
Click to expand...
Click to collapse
I red that thread before and I know what you wanna say, but my point was first part with charging, not deleting battery stats. It just has some connection with the structure of Li-ion batteries. It is also recommended to completely discharge the battery and recharge it with the phone turned off once a month.

Thanks for your answers.
Screen is on a lot of time (in the screenshots I posted you can see).
But I use lowest brightness possible, between 10 and 20% when I'm indoors and only high values when the sun hits the screen.
pieru, can you post the ManU kernel link?
I don't know what kernel i'm using, i installed Oxyged cosed (I think last version) fropm roalex. How can I know?
Thanks nlooooo.

peikojose said:
How can I know?
Click to expand...
Click to collapse
Settings>about phone>software information.
I'm fairly certain it uses thalamus kernel tho. Oxygen doesn't work with any other afaik.
Sent from my HTC Desire using Tapatalk 2

[Q] new battery

Hello
A few weeks ago i installed clockworkmod en cyanogenmod 9. This because i thougth it would be better for my battery.
When i installed those mods, i didn't remove the batterystats.
By installing those mods, i concluded that the software wasn't the problem why my battery was draining that much, but it was the battery itself.
When i brought it back to the store, they told me it was damaged.
So because of that, i ordered a new one.
Now i have the following question.
1) When i replace my old battery with the new, do i have to clear the batterystats via clockworkmod?
2) in fact, i never cleared those stats. Should i have to do this?
Thanks!
Ps, sorry for my bad english.

Midfieldgeneral said:
Hello
A few weeks ago i installed clockworkmod en cyanogenmod 9. This because i thougth it would be better for my battery.
When i installed those mods, i didn't remove the batterystats.
By installing those mods, i concluded that the software wasn't the problem why my battery was draining that much, but it was the battery itself.
When i brought it back to the store, they told me it was damaged.
So because of that, i ordered a new one.
Now i have the following question.
1) When i replace my old battery with the new, do i have to clear the batterystats via clockworkmod?
2) in fact, i never cleared those stats. Should i have to do this?
Thanks!
Ps, sorry for my bad english.
Click to expand...
Click to collapse
Battery stats are cleared whenever your battery reaches 100% (when you fully charge it). So it actually is useless to manually reset the battery stats.
Ok so your battery is damaged? How was the battery life before you flashed CM9? I don't think that it is the ROM's fault. Was your battery swollen? (getting fat)
No you dont have to reset battery stats.. Just keep in mind that CM9 and CM10 uses kernel 3.0 and they cause fast battery drain...You may have to install some apps to prolong the battery life like deep sleep battery saver and Greenify.

thearif said:
Battery stats are cleared whenever your battery reaches 100% (when you fully charge it). So it actually is useless to manually reset the battery stats.
Ok so your battery is damaged? How was the battery life before you flashed CM9? I don't think that it is the ROM's fault. Was your battery swollen? (getting fat)
No you dont have to reset battery stats.. Just keep in mind that CM9 and CM10 uses kernel 3.0 and they cause fast battery drain...You may have to install some apps to prolong the battery life like deep sleep battery saver and Greenify.
Click to expand...
Click to collapse
Hello,
Battery life before CM9 wasn't also that good.
This was one of the reasons why i changed to CM9.
After the installation, i noticed that there wasn't improvement in batterylife. It become even a bit worser...
Because of this, i went to the store to check the battery. They tested it and told me that the battery indeed was swollen.
So, if i understand good, i just have to replace the battery without clearing stats.
For the rest i just have to install some apps to counter the kernel 3.0 drainage?

Yeah you are right. Just charge the battery 100% and start using your phone.
Sent from my GT-I8150 using xda app-developers app

Really desperate here...

My battery discharges pretty quickly and I just don't know what to do anymore...
It usually goes down pretty fast when I'm connected to wifi. I think the main culprit might be Kernel (Android OS). Please take a look at some screenshots I took while using the Gsam battery monitor app and Better Battery Stats app and correct me if I'm wrong.
I have stock ROM, stock Kernel and my Radio version is: 5.1204.167.31
What do you think I should do? Change the Kernel, Radio or maybe both?
And if so, what would version would you suggest for my stock ROM?
Or should I just replace the battery and hope that fixes the issue...

Wifi will definately drain it quicker, usually keep mine turned off until I use it. Depending on how old the phone is definately affects battery life, mine is now just over 2 years old and I find that although it charges to 100%, it will drop to 91% in the first 5 minutes of using it. HTC has a self test in the dialer enter *#*#3424#*#* then follow through to the battery test. I think phone needs to be in airplane mode and has to be fully charged, then leave it on for an extra hour or two. Test takes an hour and from memory if battery is above 70% it passes.

okhughes said:
Wifi will definately drain it quicker, usually keep mine turned off until I use it. Depending on how old the phone is definately affects battery life, mine is now just over 2 years old and I find that although it charges to 100%, it will drop to 91% in the first 5 minutes of using it. HTC has a self test in the dialer enter *#*#3424#*#* then follow through to the battery test. I think phone needs to be in airplane mode and has to be fully charged, then leave it on for an extra hour or two. Test takes an hour and from memory if battery is above 70% it passes.
Click to expand...
Click to collapse
Mine does the same. It drops to 91% fairly quickly after charging. I did the HTC battery test about a month ago and it showed 81% battery left after the test (it said that if it's below 70% the battery might be faulty).
Since I made this thread, I managed to change the stock kernel and now I'm using Alex's kernel. The battery usage is much better but still the Android OS or kernel drains much of the battery.
Do you think changing the battery completely I might have better results?

classic20 said:
Mine does the same. It drops to 91% fairly quickly after charging. I did the HTC battery test about a month ago and it showed 81% battery left after the test (it said that if it's below 70% the battery might be faulty).
Since I made this thread, I managed to change the stock kernel and now I'm using Alex's kernel. The battery usage is much better but still the Android OS or kernel drains much of the battery.
Do you think changing the battery completely I might have better results?
Click to expand...
Click to collapse
Have you tried lyapota's #17 or XM's #17 kernel?

Bobbi lim said:
Have you tried lyapota's #17 or XM's #17 kernel?
Click to expand...
Click to collapse
Before Alex's kernel, I tried XM's latest kernel because I read on OP's thread that it works with stock ROM too, but I never managed to boot my phone after flashing it. (and I did everything right I think: cleared fastboot cache, fastboot flashed the boot.img then flashed the zip in recovery)
I am all for trying lyapota's kernel but the download links have been removed in the official thread I think. Can you provide me with a link for downloading please?

Try app called greenify

-TheDOC- said:
Try app called greenify
Click to expand...
Click to collapse
Thank you but I am already using Greenify.
Only one option left, to try and remove some bloatware stock apps and see if that changes anything.