Develop Bugs

How can I get my battery to last more than 5 hours?

I'm running burnt droid with the latest kernel and I have setcpu.

What are you doing in those 5 hours?

That's the problem, my phone is in sleep and still draining. When I'm texting or using any app I can watch my percentage dwindle.

try damagecontrol 3.2.3, i've gotten the best battery life from that rom. are you running 4g during those 5 hours?

No, 4G is not in my area yet. I'm going to recalibrate my battery and see if that helps. Is there any recommended setcpu settings?

I think there's a whole thread listing peoples' preferred SetCPU settings. My advice is to set your highest priority profile as "Screen off" and make it 245 min, 384 max. After that, set one for charging, then one for battery < 100%, all in descending priority. The important one is having the CPU go real low when the screen is off, in my opinion. I have mine 245/245 so it's just bottomed out when the screen is off. It helps.
Side note: I think 245 is the lowest setting most people recommend, 128 causes lots of problems in some cases.
Also, if you change ROMs a lot, I think it wipes your battery stats every time, so you probably do need to recalibrate. Cyanogen wrote up one method a while back. It's the one I used, and I feel like my battery is normal now.

[Q] Battery life has me at my wits end! Help please!!!

Ok. So I have a G2, with CM7R4. I have SetCPU with all sorts of profiles and JuiceDefender on Extreme. I still can't get more than 6-7 hours out of my battery. I take it off the charger before I leave for work, and before I even clock out, the phone is dead. This is whith even minimal usage. The thing is, with minimal and heavy use, I get about the same battery life. What could possibly be causing this?
I went in to Battery Stats, and Cell Standby was at 60% or more, but my browser (which I've been using for 3 or so hours, and a game I've been playing for about the same, are both only at 2%. I went in to Spare Parts, and it showed the phone has been running constantly for about 3 hours with no sleep, even though I've shut the screen off and stopped using it completely numerous times in the last 3 hours.
There has got to be something I can do. How are people getting 2 days uptime when I can't even get 8 hours? Someone help please!
Edit: Thank you everyone for your suggestions! I drained my battery, wiped battery stats, removed a bunch of SetCPU profiles, and installed Green Power to regulate my data usage. I've seen no decline in functionality, but I have already begun to see a vast battery life improvement.

Stop using setcpu.
Sent from my G2 running Cyanogenmod 7.

Do you have a reason for this? I was told to start using SetCPU the last time I brought this issue up.

What are you setCPU profiles?

Oh yeah, if you made your profiles all whack, the cpu will be constantly running. Specifically if you've set a performance governor anywhere. The more you mess with the profile creator, the more battery life you can free up easiest way to learn is to play around with the governors from time to time.
Sent from my HTC Vision using XDA Premium App

Kevin001111 said:
What are you setCPU profiles?
Click to expand...
Click to collapse
In descending priority they are:
Screen off 245/245 ondemand
Temp >45.5c 806/245 ondemand
Charging 1516/245 ondemand
Battery <10% 286/245 powersave
Battery <25% 768/245 ondemand
Battery <50% 1113/245 ondemand
And my default is 1516/245 ondemand

detox702 said:
In descending priority they are:
Screen off 245/245 ondemand
Temp >45.5c 806/245 ondemand
Charging 1516/245 ondemand
Battery <10% 286/245 powersave
Battery <25% 768/245 ondemand
Battery <50% 1113/245 ondemand
And my default is 1516/245 ondemand
Click to expand...
Click to collapse
Why are you charging your phone at 1516 max? Your max for charging should be 806 (stock clock), to prevent excessive heat.
Have you tried wiping battery stats in ClockworkMod recovery?

I had the same when I flashed CM7 RC4!
How I fixed it:
1: let the battery drain, until it goes off.
2: you still have power to boot it in the recovery mode.
3: delete the battery stats (advanced tab)
4: reboot the device
5: charge it (device on or off doesn't really matter I think).
My battery was drained after 8 hours without much usage... now I get over 28 hours even with average use
also I only got 2 profiles @ setCPU: screen off min 386/ max 786mhz and the main profile: 806mhz max / 386 min and my device is not laggy or sluggish.
Using the pershoot kernel 2.6.32.36 and stock radio.

SnowOokami said:
I had the same when I flashed CM7 RC4!
How I fixed it:
1: let the battery drain, until it goes off.
2: you still have power to boot it in the recovery mode.
3: delete the battery stats (advanced tab)
4: reboot the device
5: charge it (device on or off doesn't really matter I think).
My battery was drained after 8 hours without much usage... now I get over 28 hours even with average use
also I only got 2 profiles @ setCPU: screen off min 386/ max 786mhz and the main profile: 806mhz max / 386 min and my device is not laggy or sluggish.
Using the pershoot kernel 2.6.32.36 and stock radio.
Click to expand...
Click to collapse
is it really necessary to let the battery drain in order to wipe the battery stats? I'm thinking about trying this myself, but there's some debate on whether or not the battery should be drained or not in other threads.
Sent from my HTC Vision using XDA Premium App

ohshootrawr said:
is it really necessary to let the battery drain in order to wipe the battery stats? I'm thinking about trying this myself, but there's some debate on whether or not the battery should be drained or not in other threads.
Sent from my HTC Vision using XDA Premium App
Click to expand...
Click to collapse
True it's not "healthy" to drain a li-on battery, but it's not 100% drained and I've been without power several times because I forgot to turn it off before I got home to charge it
Also in my opinion a 1-time total drain doesn't damage the battery. Just let your navigation on till it's empty (leave the screen on too) it will go off, you will be able to boot the phone once or twice after that, so it's not a 100% drain, boot in recovery mode then delete the battery stats, reboot and put the charger in it. That did the trick for me. Hopefully it works for you too
I guess you could do it the other way around, charge the phone completely, wipe the battery stats, drain it till it goes off and reboot. That takes a bit longer I guess.

You said it was the "phone" using most of your battery? I know there was or is a setting in cm "flip to ignore" that when enabled it kept the phone awake. Worth a shot...

Why are you charging your phone at 1516 max? Your max for charging should be 806 (stock clock), to prevent excessive heat.
Click to expand...
Click to collapse
That's why I have the temp. profile. I basically have to have my phone in a charger at all times, otherwise it dies. So I have it set to run at max so my games and whatnot work well.
I had the same when I flashed CM7 RC4!
How I fixed it:
1: let the battery drain, until it goes off.
2: you still have power to boot it in the recovery mode.
3: delete the battery stats (advanced tab)
4: reboot the device
5: charge it (device on or off doesn't really matter I think).
My battery was drained after 8 hours without much usage... now I get over 28 hours even with average use
also I only got 2 profiles @ setCPU: screen off min 386/ max 786mhz and the main profile: 806mhz max / 386 min and my device is not laggy or sluggish.
Using the pershoot kernel 2.6.32.36 and stock radio.
Click to expand...
Click to collapse
Thanks! I'll try this today, because my phone will undoubtedly die before I get home from work. I'd love to get 28hrs use. Last night, I got 7h30m30s on battery. That's good compared to what I usually get, but it left me without a phone during the deadest part of my shift.
You said it was the "phone" using most of your battery? I know there was or is a setting in cm "flip to ignore" that when enabled it kept the phone awake. Worth a shot...
Click to expand...
Click to collapse
Thanks! I'll look and see if this is causing it. I wouldn't've turned it on, but maybe it's on by default?

You need to recalibrate it by doing what that one post said, after using so many roms, your phone battery needs to be recalibrated

Since I've got the phone, I've only used CM, but I have used at least 5 different versions. I'm working on killing it right now. It'll be dead much earlier than usual with all the use its's getting, and I was smart enough to bring a charger so I can charge it as soon as it dies and gets recalibrated.

Let me know if it works for you!

detox702 said:
In descending priority they are:
Screen off 245/245 ondemand
Temp >45.5c 806/245 ondemand
Charging 1516/245 ondemand
Battery <10% 286/245 powersave
Battery <25% 768/245 ondemand
Battery <50% 1113/245 ondemand
And my default is 1516/245 ondemand
Click to expand...
Click to collapse
I had a setup similar to this (many different profiles) and I had awful battery drain. I read in a thread somewhere here that it was setcpu that was the culprit of the excessive drain because having many profiles has it constantly using cpu power.
I have since switched my default to 1017/245 on demand and now I only use a screen off profile at 245/245. Since making that change, my battery life improved significantly (25-30% improvement)
I don't do anything that requires the full 1.5ghz on my phone which is why I now run at 1ghz but definitely feel that the setcpu profiles cause some major drainage...

SnowOokami said:
True it's not "healthy" to drain a li-on battery, but it's not 100% drained and I've been without power several times because I forgot to turn it off before I got home to charge it
Also in my opinion a 1-time total drain doesn't damage the battery.
Click to expand...
Click to collapse
Its unlikely, but possible your battery will not take a charge after you discharge the battery too low (safety circuit does not properly kick in). I've seen this problem crop up (pretty occasionally) from time to time back on the Touch Pro 2 forums, and have seen it happen here to a couple people on the Vision as well.
The battery meter is not all that accurate, anyway. Most of what you suggest if fine: to delete battery stats, let it charge to full, but then drain to 10% or so. You aren't really gaining much by doing that versus totally empty, and its safer.

TrueYears said:
You need to recalibrate it by doing what that one post said, after using so many roms, your phone battery needs to be recalibrated
Click to expand...
Click to collapse
There is no such thing as calibrating a Li-ion battery. You are calibrating the battery meter on the phone.

[Q] [CM7] How can I figure out why my battery is draining?

I got pretty crap battery life yesterday (see attachments). I plugged in my phone in the afternoon so it was fully charged when I left work in the evening, and then I only used the phone a little bit before I went to bed.
From 6 pm to 11 pm (when I went to bed) it drained from 100% to about 55%. Didn't plug it in overnight. When I got up this morning, it was at 17%. Wifi was on, airplane mode was not on, but I didn't use the phone at all and it probably should have just gone to sleep, right?
Anyway, this was only my second day of using CM7 instead of CM9. I had been on CM9 for a week or so before I decided to go back to CM7 for the battery life. It's weird, I've searched for and read several of the battery life posts here in the Q&A section and everyone seems to recommend CM7 for battery life, but in my case it didn't work out so well. There must be something going on - how can I figure this out?

I'm getting great life from cm7! You may want to wipe all caches, and battery stats, and reflash the Rom on top. Then apply v6 supercharger, kak tweaks..
Further more download better battery stats, Google search it, and see what apps have high partial wake times
Sent from my SPH-D700 using Tapatalk 2

omair2005 said:
I'm getting great life from cm7! You may want to wipe all caches, and battery stats, and reflash the Rom on top. Then apply v6 supercharger, kak tweaks..
Further more download better battery stats, Google search it, and see what apps have high partial wake times
Sent from my SPH-D700 using Tapatalk 2
Click to expand...
Click to collapse
v6 supercharger, tweaks, etc... isnt required at all.
He needs to show us all his battery stats from Better Battery Stats, and his CPU freq Table from Voltage Control and the I/0 Scheduler and Cpu Governor and What kernel is he using

My kernel is listed as 2.6.35.7 which I believe is an AOSP kernel
I don't own Better Battery Stats
Just installed Voltage Control... Min 100 MHz, max 1000 MHz, I/O scheduler is sio, CPU governor is ondemand, and this is after running the V6 and KAK scripts. I'm going to see how my battery holds up today.

Try with better battery stats app
Sent from my Desire using XDA

you can also use cpu spy to find out if your phone is actually going into deep sleep or if it's running @ something higher.

Mama Luigi said:
My kernel is listed as 2.6.35.7 which I believe is an AOSP kernel
I don't own Better Battery Stats
Just installed Voltage Control... Min 100 MHz, max 1000 MHz, I/O scheduler is sio, CPU governor is ondemand, and this is after running the V6 and KAK scripts. I'm going to see how my battery holds up today.
Click to expand...
Click to collapse
BBS is free and is on XDA, Try conservative for your CPU governor that'll help and if you use CPU Spy as mention below me that'll show the amount of time each freq. is on

Ah, thanks for pointing that out!
I'm going to take some time to figure out how to interpret all this. CPU Spy seems pretty straightforward though. It is reporting that the CPU has gone into deep sleep most of the time it's been unplugged, so that can't be the problem. I did go into Voltage Control and change the CPU governor from ondemand to conservative; hopefully that helps.
For Better Battery Stats I'm going through the official thread and just trying to compare my results against what people are saying there. So far the biggest potential culprit is GTALK_ASYNC_CONN, which has the largest duration of partial wakelocks at 2m22s. Behind that is Wimax (obviously having that on is gonna drain my battery; I don't normally use it but today I have been) and then *network-location* with 1m14s. I'm not sure I really need to post a full dump although if anyone really wants to look it over I could.
Anyway thanks for all the help guys.

Mama Luigi said:
Ah, thanks for pointing that out!
I'm going to take some time to figure out how to interpret all this. CPU Spy seems pretty straightforward though. It is reporting that the CPU has gone into deep sleep most of the time it's been unplugged, so that can't be the problem. I did go into Voltage Control and change the CPU governor from ondemand to conservative; hopefully that helps.
For Better Battery Stats I'm going through the official thread and just trying to compare my results against what people are saying there. So far the biggest potential culprit is GTALK_ASYNC_CONN, which has the largest duration of partial wakelocks at 2m22s. Behind that is Wimax (obviously having that on is gonna drain my battery; I don't normally use it but today I have been) and then *network-location* with 1m14s. I'm not sure I really need to post a full dump although if anyone really wants to look it over I could.
Anyway thanks for all the help guys.
Click to expand...
Click to collapse
In BBB look at since unplugged and kernel wakelocks do you have a "mmc_delayed_work" mine is high that affects battery life too

Slightly different situation now. A couple days ago I switched to an ICS rom, this time AOKP. Things seemed to be fine but this afternoon my battery absolutely tanked while I wasn't using the phone - the standard battery interface showed that the phone did not sleep during that time even though it was in my pocket, and Better Battery Stats showed a huge amount (over 3 hours) of kernel wakelocks from "sec_jack." Know what could be causing that?
EDIT: I should add, using the standard battery screen, it has simply lumped in whatever is now draining my battery into "Android System." It showed a keep-awake time of around 20 minutes when the total time unplugged was 25 minutes. I tweaked a few things, turned off AOKP's weather service and made sure Facebook wasn't pulling background data, and restarted my phone. I'll have to see how it goes.

Solved! I turned off the weather service built into AOKP last night. This morning, the sec_jack wakelocks were gone and my battery had only gone down by a couple % overnight.

Defy/Defy+ Battery Stats, Endurance and Advice

Me and My Battery
A comprehensive battery stat and tweak thread​
We all love our phone.
We all measure battery life.
And we all tend to post that battery life on the CM10 DEV thread.
Not any more!
This thread will aim to reduce the battery OT load on Quarx's CM10 thread...
Post whatever battery related stuff you want to in here.
Do you use an HF5 or an HF5X??
Are you a badas* and use an HF5X on a Defy?
How long does your battery last on the latest build?
How long did it last on stock MotoBlur?
How long did it last on CM7? On CM9?
How long did it last on that month old build nobody else uses now (except for you)???
How old is your battery?
How do you charge your battery?
Via wall-mount charger or via PC USB?
When do you charge it?
Every night?
Whenever it reaches below 15%?
After fully draining it up to 0%?
What are your battery temperatures?
Do you use Juice Defender or other apps?
Please feel free to post advice on how you increase battery life on your phone.
Post battery fixes if they are needed.
In short, use THIS thread for all the nitty-gritties of battery life.

inb4 y'all.

3rd
muffin approved this message.....

Reserved
____________________________________
ಇದು ನನ್ನ ಆಪ್ ಸಿಗ್ನೀಚುರ್
Nothing is True.. Everything is Permitted©

Seing as someones thrown their toys out of the pram on the dev forum ( it feels like walking on eggshells on here sometimes )
for me, The latter versions of CM10 have significantly shorter battery life than other roms such as cm7 and older versions of CM10.
this is across all of 3 my batterys, all of them varying in age, form as old as the phone to anout 8 months old.

Reserved
Great ideea btw had some info to share but didn't want to clog the dev thread.
Sent from my MB526 using xda premium

SleepyKrushna said:
Me and My Battery
A comprehensive battery stat and tweak thread​
We all love our phone.
We all measure battery life.
And we all tend to post that battery life on the CM10 DEV thread.
Not any more!
This thread will aim to reduce the battery OT load on Quarx's CM10 thread...
Post whatever battery related stuff you want to in here.
Do you use an HF5 or an HF5X??
Are you a badas* and use an HF5X on a Defy?
How long does your battery last on the latest build?
How long did it last on stock MotoBlur?
How long did it last on CM7? On CM9?
How long did it last on that month old build nobody else uses now (except for you)???
How old is your battery?
How do you charge your battery?
Via wall-mount charger or via PC USB?
When do you charge it?
Every night?
Whenever it reaches below 15%?
After fully draining it up to 0%?
What are your battery temperatures?
Do you use Juice Defender or other apps?
Please feel free to post advice on how you increase battery life on your phone.
Post battery fixes if they are needed.
In short, use THIS thread for all the nitty-gritties of battery life.
Click to expand...
Click to collapse
Is this post here only for Battery under CM10 or in General??????
I have problem with BF5X High-Capacity Gold Battery 2430 mAh (for Moto MB525) under 3 and 4MS2G ROM.
It is charging Up to 81% only and I have tried out Walter`s patch But nothing.
Under Stock FROYO it charges Up to 90%.
Please, ignore/delete if the tread is only for CM10!

I think that I found the culprit.. (maybe)
- install SetVsel
- check if the values are higher than than those on bootmenu
Can some one check this?
I had VSel1 to something like [email protected] or VSel4 on [email protected] ...
But bootmenu has much lower values..
so far, so good..

nedywest71 said:
Is this post here only for Battery under CM10 or in General??????
I have problem with BF5X High-Capacity Gold Battery 2430 mAh (for Moto MB525) under 3 and 4MS2G ROM.
It is charging Up to 81% only and I have tried out Walter`s patch But nothing.
Under Stock FROYO it charges Up to 90%.
Please, ignore/delete if the tread is only for CM10!
Click to expand...
Click to collapse
Hi, I am using the exact same battery as yours.
Using Quarx's new kernel in the 2nd boot version of CM10, that battery can charge normally to 100%...
Sent from my Nexus 7

axcoro said:
I think that I found the culprit.. (maybe)
- install SetVsel
- check if the values are higher than than those on bootmenu
Can some one check this?
I had VSel1 to something like [email protected] or VSel4 on [email protected] ...
But bootmenu has much lower values..
so far, so good..
Click to expand...
Click to collapse
Just to make it crystal clear, the default boot menu values are actually OVER volted.
Calculate values for your frequencies either by using this app-----> http://forum.xda-developers.com/showthread.php?t=1815142
Or by using the formula (frequency)/20 ±2.
Use boot menu to set frequencies and voltages.
Keep 'Load all modules' OFF, and governor as Interactive.

SleepyKrushna said:
Just to make it crystal clear, the default boot menu values are actually OVER volted.
Calculate values for your frequencies either by using this app-----> http://forum.xda-developers.com/showthread.php?t=1815142
Or by using the formula (frequency)/20 ±2.
Use boot menu to set frequencies and voltages.
Keep 'Load all modules' OFF, and governor as Interactive.
Click to expand...
Click to collapse
That's the problem... in bootmenu the values are lower than those, when andoid is running!
(and yes.. I used that app )
eg:
bootmenu: vel1: 300 @ 30
runtime: vel1: 300 @ 42
and thats is odd..

axcoro said:
That's the problem... in bootmenu the values are lower than those, when andoid is running!
(and yes.. I used that app )
eg:
bootmenu: vel1: 300 @ 30
runtime: vel1: 300 @ 42
and thats is odd..
Click to expand...
Click to collapse
This is on CM10 05.12?

SleepyKrushna said:
Just to make it crystal clear, the default boot menu values are actually OVER volted.
Calculate values for your frequencies either by using this app-----> http://forum.xda-developers.com/showthread.php?t=1815142
Or by using the formula (frequency)/20 ±2.
Use boot menu to set frequencies and voltages.
Keep 'Load all modules' OFF, and governor as Interactive.
Click to expand...
Click to collapse
I've been using SetVsel to adjust voltage. Should I be adjusting the bootmenu's instead? Why?
Cheers.
----
I have BF5X ... So what does this mean in comparison to HF5(X)?
Quarx 2012.11.18
Usually charge via wall-mount since PC-USB takes longer.
Usually have to charge overnight.
With semi-regular use, It's lasted 21hrs.
Usually lasts less than that with video/music/screen on constantly.
(With 3G-on, Brightness 25-50%, subsonic running playing music, getting a few texts, and messing with some settings/desktop I lost just under 10% batt in one hour. or 1-2% usage per 10 minutes.)
I only use SetVsel:
300/17
600/32
800/42
1000/52
up_threshold: 86%
Apply @ boot: Ticked.
Limiting Vsel2 @ 10%
up_threshold to 99% @ 10%

KicknGuitar said:
I've been using SetVsel to adjust voltage. Should I be adjusting the bootmenu's instead? Why?
Cheers.
----
I have BF5X ... So what does this mean in comparison to HF5(X)?
Quarx 2012.11.18
Usually charge via wall-mount since PC-USB takes longer.
Usually have to charge overnight.
With semi-regular use, It's lasted 21hrs.
Usually lasts less than that with video/music/screen on constantly.
I only use SetVsel:
Apply @ boot: Ticked.
Limiting Vsel2 @ 10%
up_threshold to 99% @ 10%
Click to expand...
Click to collapse
Why?? Coz you can....
using boot menu instead of setvsel just reduces the no of apps you need to use.
Why do a patch when you can program the system itself?
Plus, auto patches at boot increase the time it takes for the phone to become usable after boot.
AFAIK, BF5X and HF5X are the same... I don't know this for sure, but someone said this some time back on the dev thread...
18.11 was a good build... I got 4.5 hrs on continuous 3G use... and about 18-20 hrs on occasional use....

2Pints said:
Seing as someones thrown their toys out of the pram on the dev forum ( it feels like walking on eggshells on here sometimes )
for me, The latter versions of CM10 have significantly shorter battery life than other roms such as cm7 and older versions of CM10.
this is across all of 3 my batterys, all of them varying in age, form as old as the phone to anout 8 months old.
Click to expand...
Click to collapse
Ya, battery life is lesser and battery temperatures are higher on CM10 05.12 in my experience.
Its a bug of the latest build...
Let's wait to see what the next one does....

SleepyKrushna said:
Why?? Coz you can....
using boot menu instead of setvsel just reduces the no of apps you need to use.
Why do a patch when you can program the system itself?
Plus, auto patches at boot increase the time it takes for the phone to become usable after boot.
AFAIK, BF5X and HF5X are the same... I don't know this for sure, but someone said this some time back on the dev thread...
18.11 was a good build... I got 4.5 hrs on continuous 3G use... and about 18-20 hrs on occasional use....
Click to expand...
Click to collapse
Cheers.
Any other adjustments beyond Vsels I should adjust in the Bootmenu? i.e. the 10 batt options SetVset had.
What blows my mind is the phone I had before Defy was just a QWERTY keyboard sliding cellphone... freaking 2+ days of usage! Now I can barely make it to 24hrs! AGh!

KicknGuitar said:
Cheers.
Any other adjustments beyond Vsels I should adjust in the Bootmenu? i.e. the 10 batt options SetVset had.
What blows my mind is the phone I had before Defy was just a QWERTY keyboard sliding cellphone... freaking 2+ days of usage! Now I can barely make it to 24hrs! AGh!
Click to expand...
Click to collapse
You can do a lot in boot menu....
set thresholds, set CPU speed in sleep, on wakeup, etc....
its been months since i used setvsel, so I'll have to look up the options you're talking about..

Well, me and my battery are about to go our separate ways, I notice heavy drops lately, for example from 70% directly to 50%. I believe the battery is dying, so I ordered a 2400mAh battery from an amazon.co.uk reseller. My current battery is an BF5X original, nearing the 2 years mark now. I charged once every 2 days when in CM7, but often every day after heavy usage. With CM10 I have to charge every day, it drains more.

ccav2000 said:
Well, me and my battery are about to go our separate ways, I notice heavy drops lately, for example from 70% directly to 50%. I believe the battery is dying, so I ordered a 2400mAh battery from an amazon.co.uk reseller. My current battery is an BF5X original, nearing the 2 years mark now. I charged once every 2 days when in CM7, but often every day after heavy usage. With CM10 I have to charge every day, it drains more.
Click to expand...
Click to collapse
I'm a real heavy user.... most of the time my phone is plugged in, coz with the loads I put on the 3G antenna and on the processor, I only get 4-4.5 hours of use....

Pasting this here for safekeeping from main dev thread:
Suspend - no1 power consumer.
I second that. Using the same tools like GSAM Pro + ROM Toolbox and Android Toolbox from 3C, i managed to isolate the same process. Underneath it all this "suspend" belongs to the kernel and from a more detailed report it is allways accompanied by "loop#" processes. In my case, kernel and its processes is the no1 consumer, all the time.
The second consumer is Android System, mostly due to atmospheric sensors (i had no ideea the Defy+ has anything like this..probabily because it doesn't  but the processes are there anyway)
Even like that i get at least 30hrs between charges, permanently having wifi or 2G on.. .
My HF5X battery is 1yo(came with the phone) and is being charged with no concern whatsoever about preserving it's life ...so yeah, random times and random sources (pc or wall plug, even used my e-cigar ac adapter).
What i did so far was:
- I had problems with "media server" as a power hog. After searching the forum for a solution a thread gave me the right one.
I ran mp3 check and found several mp3 files that were broken. Fixed whatever i could and replaced what was irreparable (AC/DC-Thunderstruck, of course, was one of'em)
- Found and removed unnecessary start-up entries. Wherever this was not an option i disabled their receivers (i REALLY don,t need to have YouTube ready at boot time, having it started on youtube links is nice enough).
- Used many launchers to the day. The last one and by far the least RAM/CPU and power hungry is the current one - Lightning Launcher by PIERROX (see signature). Look at the download size in the Play Store (handsome title btw) Did i mention it's FREE?
- Keyboard was replaced with Perfect Keyboard Pro - low RAM footprint.
- I permanently use a live wallpaper that gives me an overview of the CPU, RAM, BATTERY and DIRECTION (compass is allways on but is literraly close to 0 in terms of power consumption)
-ALL the useless stuff was uninstalled or replaced.
- Using Android Toolbox i setup database and app load optimisations to run on boot.
- ZRAM is disabled, KSM on, SWAP (64mb) is on.
What i want to do:
- collect a full system dump, if possible. Get it analysed (in UNIX there's kdb for that purpose, i have no ideea what is the equivalent here)
Hope this helps/points/suggests an approach to someone. Furthermore, may i suggest a SEAL TS3 for those mild Siberian winter nights? IP68 & MIL-SPC860 should help 
Regards.
Sent from my MB526 using xda premium.

[Q] Custom kernel for better battery life ?

Hey guys ,
I am not getting that good battery as everyone. I am only getting about 4-5h on screen time not like the others 7-10 hours.
What can I do to get this awesome battery life ?
Are there any tweaks,mods that I have to apply ? Is there a custom kernel that is preferable ?

EL Sa7eR said:
Hey guys ,
I am not getting that good battery as everyone. I am only getting about 4-5h on screen time not like the others 7-10 hours.
What can I do to get this awesome battery life ?
Are there any tweaks,mods that I have to apply ? Is there a custom kernel that is preferable ?
Click to expand...
Click to collapse
Are you using a custom rom? If yes, which is it?
Have you tried disabling location settings in settings?
Have you untick location settings and remote wipe device in google play services?
Doi you have a high wakelock that's cauing the issue?

EL Sa7eR said:
Hey guys ,
I am not getting that good battery as everyone. I am only getting about 4-5h on screen time not like the others 7-10 hours.
What can I do to get this awesome battery life ?
Are there any tweaks,mods that I have to apply ? Is there a custom kernel that is preferable ?
Click to expand...
Click to collapse
I usually get 7-10+ hours, but I also keep mine on a wireless charger if I'm sitting at my desk or if I'm away and don't need it. Here's my setup that may help your battery life:
Location Settings: Battery Saving, this especially helps on stock ROM
Kernel: ElementalX 2.6: Overclocked to 1.8 GHz and undervolted on lower frequencies with elementalx governor. Cool thermal throttling, max screen off frequency is 1.026 GHz. GPU overclock to 450 MHz, ondemand.
If your screen brightness is up over 50% it's wasting a lot of power. I keep mine around 20-25% or on Auto.
When the screen is turned off it doesn't drain too much either. Overnight, 6-7 hrs, drains maybe only 5%. I'm going on 14 hrs battery with only a little bit of charging from the wireless qi charger.
Attatched is a screenshot of battery stats.

Bobbi lim said:
Are you using a custom rom? If yes, which is it?
Have you tried disabling location settings in settings?
Have you untick location settings and remote wipe device in google play services?
Doi you have a high wakelock that's cauing the issue?
Click to expand...
Click to collapse
I am on the stock rom ,
for the location services it's set to battery mode.
I don't have that high lock but after a 18-24 hour I got one or two hour of CPU total at Android System - Android OS
datallboy said:
I usually get 7-10+ hours, but I also keep mine on a wireless charger if I'm sitting at my desk or if I'm away and don't need it. Here's my setup that may help your battery life:
Location Settings: Battery Saving, this especially helps on stock ROM
Kernel: ElementalX 2.6: Overclocked to 1.8 GHz and undervolted on lower frequencies with elementalx governor. Cool thermal throttling, max screen off frequency is 1.026 GHz. GPU overclock to 450 MHz, ondemand.
If your screen brightness is up over 50% it's wasting a lot of power. I keep mine around 20-25% or on Auto.
When the screen is turned off it doesn't drain too much either. Overnight, 6-7 hrs, drains maybe only 5%. I'm going on 14 hrs battery with only a little bit of charging from the wireless qi charger.
Attatched is a screenshot of battery stats.
Click to expand...
Click to collapse
Thank you.
I have already put the Location Settings on Battery saving mode & I have changed the kernel as you mentioned but without overclocking the CPU the screen is always on Auto.