[Q] what is the best battery saving kernel? - T-Mobile Samsung Galaxy S II SGH-T989

hey guys, i am looking for a kernel that will save me on battery. i am running zombie 4 rom. it says it runs the dark x kernel. i don't need to be running at super speeds but i don't want screen freezes either. i just want to be able to play my satellite radio without the phone draining 3 percent every 5 min or so. any help would be great.

edshawn911 said:
hey guys, i am looking for a kernel that will save me on battery. i am running zombie 4 rom. it says it runs the dark x kernel. i don't need to be running at super speeds but i don't want screen freezes either. i just want to be able to play my satellite radio without the phone draining 3 percent every 5 min or so. any help would be great.
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I would be interested in this as well. Currently I am Rooted and have tried a few ROM's but haven't found one yet that doesn't have some bug or another. {Granted, I haven't tried them all} Tried one ROM that really distorted my custom made Wallpapers, which is a big deal to me. So... yes, any info on a better battery life Kernel would be welcome.
Currently I am not a "heavy user" on the phone. Talk - Text - You Tube occasionally... that's it. Constantly looking for better ways to improve this already amazing phone.

Eugenes kernel has given me great battery life. Either get down with Eugene's Macnut ROM which already has it or search for it under the general section under the bounty thread for Eugene. Its in page....58?
Keep in mind that the "beta" kernel does not have bln support but works just fine so long as you use the lionheart governor.
If you can't find the bounty thread then I'm sorry for you.

Synergy kernel has been awesome on battery for many.
Sent from my SGH-T989 using XDA App

I second just using macnut rom. I've tried em all, and his always gets the best battery life (for me).
I also undervolt via system tuner pro so that I'm at 1137 at 1.51
Sent from my SGH-T989 using xda premium

G1ForFun said:
Synergy kernel has been awesome on battery for many.
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+1 for Synergy, i got well over a day when i was running rooted stock debloated, etc. Also i use setcpu ondemand gov. 1620 max 384 min

edshawn911 said:
hey guys, i am looking for a kernel that will save me on battery. i am running zombie 4 rom. it says it runs the dark x kernel. i don't need to be running at super speeds but i don't want screen freezes either. i just want to be able to play my satellite radio without the phone draining 3 percent every 5 min or so. any help would be great.
Click to expand...
Click to collapse
How you use your phone determines the best way to get the best battery life. Basically there are two ways to save battery: cutting power when not in use and delivering less power to the processors.
If you use your phone intermittently throughout the day for texts or calls, you'll get the best battery results from kernels/ROMs/apps that cut unnecessary functions when you're not using the phone. For example, juice defender cuts your wifi and mobile data when your screen is off and reactivates it every 15min (can be configured otherwise) to check for notifications. Darkside's Digital Warfare utilizes something called "deep sleep" which actually completely turns off your processors when the screen is off, but keeps the basic cell radio on so if you receive a text/phone call it will wake up the processor. These functions have the largest and safest impact on battery life.
If you're constantly using your phone and you want better battery life, you basically only have one option: undervolting. This is essentially supplying less power to your processors, which can be done through system tuner. It's not a free ticket, however; if you undervolt too low then at higher frequencies (playing games, etc.) your processor will become unstable and your phone will randomly reboot. If you encounter this, then don't undervolt that much and up the voltage to the last safe level. Just for reference, undervolting by 50mV is usually considered safe and undervolting past 100mV usually results in boot loops. But how far you can actually undervolt depends on your individual phone hardware, there's no universal answer. Make sure to not set your undervolt settings to set at boot until you find a stable voltage. Otherwise, you'll be forced to restore a nandroid if you encounter a bootloop.
TL;DR
If your phone already lasts a day and you want it to last 2-3 days, look into ROMs/kernels/apps that cut unnecessary functions when not in use. Most effective way to extend battery.
If your phone lasts 8 hours and you want it to last a day because you're a heavy user, look into undervolting with system tuner.

kernel darkside
my phone used in 24h, very good

I'm using juggs. 5.0 with a DSX kernel. I've been getting about 11-12 hours with decent use.
Sent from my SGH-T989 using XDA App

stock rom. Just download a battery manager from the Market.

Related

battery drain and Snap with CM6?

CM6 is definitely great, I think without question it is a vast improvement.
The only issue I have is my battery life is ABSOLUTELY HORRIBLE. Could be the worst battery life I've had with any phone. But maybe that's just the EVO, with it's big screen and speedy processor. I underclock to 384 mhz sometimes but then the thing slows down and even freezes. I have 3 different batteries and they all perform about the same (not good.) Before I had a partial wake issue but that's gone, and battery life still stinks. I've also tried calibrating but nothing really seems to make it better.
I hear the snap thing is good for battery life but I everytime I open that thread I get a headache. I love this phone and am obsessed wtih it but that thread is a bit much even for me!
Can anyone give me a quick and dirty explaination of what snap is / how to use snap? Which kernel to flash? Some day I hope to digest that mammoth of a thread, but right now I'm too busy reading texts for college and Just want better battery life.
Thanks!
Download app System Panel. Will help show you what is eating up your battery/resources.
Then, download app Juice Defender. Worth it to get the paid version. Its like 3 bucks IIRC. This will help you get more battery life out of your phone.
-Sent from my Evo.
nyc_zx10 said:
Download app System Panel. Will help show you what is eating up your battery/resources.
Then, download app Juice Defender. Worth it to get the paid version. Its like 3 bucks IIRC. This will help you get more battery life out of your phone.
-Sent from my Evo.
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Yeah, I tried System Panel but the things eating my battery were mostly system things, like Browser. I guess I could give it another go.
Why are Juice Defender reviews so bad? I've considered it before also, maybe will try playing with it again
snap 8.2 is the current release. you can try any of the kernels, but i would avoid the 7.0/7.1 SD Card implementations since that technology has been put on the back burner for a bit.
Snap allows you to you Overclock and Undervolt (aka: UV).
Overclocking of course is for speed and Undervolting may save battery.
all EVOs are not created equal. some like undervolting some do not. so snap is available in multiple flavors. each with a different UV floor. the lower the floor the more potential battery saving..but also the more chance for a random reboot or wifi/gps acting funny. remember UV retards the amount of power so things can act goofy. the different UV floors are 800mv - 925mv. for example...i use the 8.2_900 because it works well with my EVO. the 8.2_800 booted great but after a while started rebooting itself. 8.2_850 just hung at bootup. the 8.1 kernels didn't work for me at all. 7.3b1 was great.
HAVs is adaptive..so don't get stressed if your device fails to boot properly the first time. wipe the cache/dalvik and try again.
so download a few of the 8.2 kernels.
make your nandroid
begin trial and error (I'd suggest starting at 800, 850 then 900 to get a feel)
don't be afraid to wipe the Cache and Dalvik multiple times.
don't worry about the whole thread. just grab the last few pages and read the OP. then feel free to ask.
i also recommend setCPU. you can find some threads for SetCPU configurations to help. BUT....make sure SetCPU is disabled when flashing the new kernel. once you get a working kernel you can enable SetCPU...but during testing phase it will give you gray hair.
jmxp69 said:
Just a few quick thoughts on voltages/freqs after seeing a handful of discussion in the thread:
1) Every 8.2 kernel has voltages lower than stock. The default stock voltage @ 245 is something around 1050.
2) No real effort is made to UV at the top end. It's a little lower, but the objective at the highest CPU frequency is not to UV. Most of the benefit of UV comes at the low end of the scale when your phone is idle (most of the time). Less voltage = less draw.
3) nHAVS scales voltage at each step. There is a min.max voltage at every cpu frequency. This range is fairly small--50-75mv, but it enables HAVS to decide based on feedback from the CPU which one to apply. And the max at each step is lower than stock. So no matter how you slice it, even if you're running 925, you are undervolted. This becomes a question of how undervolted.
4) OC is not about undervolting, it's about overclocking. The differences is voltage vs. frequency. OC means we're increasing the CPU frequency beyond stock which is 998mhz in the case of Evo. If you move your SetCPU slider beyond 998mhz, you're overclocking.
The objective of overclocking is speed. The objective of undervolting is battery savings. Snap gives you both. We overclock when we increase the fequency with SetCPU. We undervolt automatically via nHAVS. As of this writing, UV is handled in the kernel, it happens most at the bottom end of the frequency scale.
I hope this helps clear up some of the questions. Great conversation by the way.
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GREAT EXPLANATION Dragin!!!
and also, to the OP.... dont forget, if you do go with setcpu, do NOT 'set on boot' mmmmkay??? lol
Thank you Dragin!!!
That helps a lot! So once you have Snap setup at what you feel is "good" does your phone seem to perform as well as before you had it undervolted? Man, sounds like a pretty involved process - maybe I better wait until I can really sit down and play with it.
goodelyfe said:
GREAT EXPLANATION Dragin!!!
and also, to the OP.... dont forget, if you do go with setcpu, do NOT 'set on boot' mmmmkay??? lol
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Do you mean for the first flash? Or every time you boot your phone?
If not set on boot, it means you have to start SetCPU manually after each boot. Doesn't seem right
Sent from my PC36100 using XDA App
foueddyf said:
Do you mean for the first flash? Or every time you boot your phone?
If not set on boot, it means you have to start SetCPU manually after each boot. Doesn't seem right
Sent from my PC36100 using XDA App
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I think he's talking about when ur figuring out the best setup
Regarding Juice:
I didn't really read too much into the reviews for this particular app. It works. I was having battery issues. Downloaded Juice, got the settings somewhat right to my liking and so far no complaints. Unplugged my phone from charger this morning at roughly 9am, been using it moderately all day, and as of right now at 12:50am, I am at 29%.
Bad reviews or not, I can attest to it working and making a difference in battery life.
Sent from my PC36100 using XDA App
I had the same issue, left to stock with kingx.
Sent from my PC36100 using XDA App
nyc_zx10 said:
Regarding Juice:
I didn't really read too much into the reviews for this particular app. It works. I was having battery issues. Downloaded Juice, got the settings somewhat right to my liking and so far no complaints. Unplugged my phone from charger this morning at roughly 9am, been using it moderately all day, and as of right now at 12:50am, I am at 29%.
Bad reviews or not, I can attest to it working and making a difference in battery life.
Sent from my PC36100 using XDA App
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Click to collapse
Do you know what in particular Juice is doing to give you better battery life? like what does Turn off certain things based on conditions or?
That is some good battery life.
Correct.
You can set conditions to do certain things. Such as disable data/3g/wifi while screen is off. Also if you need data synced you can set a condition to enable data wifi or 3g for X minutes every X minutes/hours.
I am not affiliated with the dev in anyway but it def made a difference and was worth the price for it.
Sent from my PC36100 using XDA App
nyc_zx10 said:
Correct.
You can set conditions to do certain things. Such as disable data/3g/wifi while screen is off. Also if you need data synced you can set a condition to enable data wifi or 3g for X minutes every X minutes/hours.
I am not affiliated with the dev in anyway but it def made a difference and was worth the price for it.
Sent from my PC36100 using XDA App
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Meh... see I really don't want to do those things. I can turn off data sync myself and just have gmail forward me a text message when I have an email. I just was hoping there was a way to get decent battery life without going back to the days of Winmo
I absolutely adore CM6, but I'm really starting to think that it is not battery friendly. Last night my battery went from full to 25% in 8 hours. I had nothing running, my partial wake was fine, and Android system took up 60%+. I really don't feel like doing another wipe, but it looks like I may have to. Just want it to work right at this point.
Again, I truly love CM6, the open source concept, the transparency, the whole clean idea of it, but there is something seriously wrong with the battery life (at least in every install I have tried)
berardi said:
I absolutely adore CM6, but I'm really starting to think that it is not battery friendly. Last night my battery went from full to 25% in 8 hours. I had nothing running, my partial wake was fine, and Android system took up 60%+. I really don't feel like doing another wipe, but it looks like I may have to. Just want it to work right at this point.
Again, I truly love CM6, the open source concept, the transparency, the whole clean idea of it, but there is something seriously wrong with the battery life (at least in every install I have tried)
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i agree with you. but i also feel that CM6 is on par with the Official HTC/Sprint ROM when it comes to battery life expectancy. however, after i put on the snap kernel and copied someones setcpu config....i got 26+hrs of 'use it as i wish' time + still had about an hour of in-pocket time left. i was hooked. i bet you an imaginary dollar the same will happen for you.
as for finding your EVOs kernel made in heaven...
it's not too bad so long as you have some time. but if you are time strapped, need your phone in 20min and don't read the OP... you will curse and swear. expect to get hung up at the HTC splashscreen a few times and it will bootloop on you before your done. <I'd suggest just leaving your battery cover off until you are done muckn about for that session>
klick may be easier for the some end users because of fewer selections. I've never used his kernels. if i try them, i'll prolly wait till he's put out a few AOSP versions...to work out any bugs.
oh yeah...one odd thing, it seems that sometimes folks flash a incompatible kernel it gets 'stuck'. after that 'bad flash' they are unable to flash any kernel until after they have nandroided back and rebooted...then they can flash again. i had this happen twice....i was unable to get a known good kernel to load until after i restored from backup. /shrug
oh....try this. download the snap7.5_925 kernel. if it runs smooth. call it a day and you should be pretty happy with that until the new versions come out. yeah, if you got one of the _800 kernels running you may pull an extra 30-45min of time...but that requires a level of geekdom that not everyone has.
DraginMagik said:
i agree with you. but i also feel that CM6 is on par with the Official HTC/Sprint ROM when it comes to battery life expectancy. however, after i put on the snap kernel and copied someones setcpu config....i got 26+hrs of 'use it as i wish' time + still had about an hour of in-pocket time left. i was hooked. i bet you an imaginary dollar the same will happen for you.
as for finding your EVOs kernel made in heaven...
it's not too bad so long as you have some time. but if you are time strapped, need your phone in 20min and don't read the OP... you will curse and swear. expect to get hung up at the HTC splashscreen a few times and it will bootloop on you before your done. <I'd suggest just leaving your battery cover off until you are done muckn about for that session>
klick may be easier for the some end users because of fewer selections. I've never used his kernels. if i try them, i'll prolly wait till he's put out a few AOSP versions...to work out any bugs.
oh yeah...one odd thing, it seems that sometimes folks flash a incompatible kernel it gets 'stuck'. after that 'bad flash' they are unable to flash any kernel until after they have nandroided back and rebooted...then they can flash again. i had this happen twice....i was unable to get a known good kernel to load until after i restored from backup. /shrug
oh....try this. download the snap7.5_925 kernel. if it runs smooth. call it a day and you should be pretty happy with that until the new versions come out. yeah, if you got one of the _800 kernels running you may pull an extra 30-45min of time...but that requires a level of geekdom that not everyone has.
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Thanks man, appreciate the breakdown.
You have inspired me, I'm going to bite the bullet and try this snap7.5_925 kernel. I'll report back my luck
I do enjoy this stuff, really - just right now it would be irresponsible for me to spend too much time on it. School comes first right now.
DraginMagik said:
... after i put on the snap kernel and copied someones setcpu config....i got 26+hrs of 'use it as i wish' time + still had about an hour of in-pocket time left. i was hooked. i bet you an imaginary dollar the same will happen for you.
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Click to collapse
Wow, I'd love to have that kind of time with CM6, right now I drain at about 10% an hour with no usage at all; where can I find that setcpu config? I really like CM6 but battery life is killing me right now.
loupy said:
Wow, I'd love to have that kind of time with CM6, right now I drain at about 10% an hour with no usage at all; where can I find that setcpu config? I really like CM6 but battery life is killing me right now.
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Yeah dragin, don't hog those sweet settings! I'm enjoying Snap 7.6 and it seems to be helping out my battery life a bit, but I'd love to see your SetCPU details.
I've found that the issue for me is bluetooth. If I have it on constantly my battery will drain 10-15% per hour. With bluetooth off it's only draining 1%-2% per hour.
Seems like the bluetooth needs work on CM6 in order to have the efficiency that the other ROMs i've tried (Fresh and EViO) have. Nonetheless, I'm sticking with CM6 and just use the bluetooth when necessary.
I have the same issue with bluetooth on CM 6.0.0. I am running the stock kernel that comes with cyanogenmod, so this is definitely not a snap issue. There was a bug submitted about a month ago:
code.google.com/p/cyanogenmod/issues/detail?id=2136
I *really* hope this can get fixed for the 6.1 release, but it is currently listed with a low priority. I really love CM6, but basically making bluetooth unusable for more than a few hours really makes me struggle with the using this rom.
Why not the 7.6 with turbo...just wonderin

Best ROM for battery life

I need opinions, anyone?
I keep flashing different ROMS and the battery has always had bad life
I've done a lot of different methods to fix battery life issues, but no go.
Having good luck with Swagged Out Stock.
Sent from my PC36100 using XDA App
A lot of people say AOSP ROMs are good on battery life cuz the sense is gone.
Try out Xplod RLS (one of my favs) test it out see how it goes for you. It's an AOSP btw.
For sense I recommend Tommytomatoes Classic v0.0.0.4 its awesome!
How long does your battery last? Are you running mobile data all day? GPS?
I can get around 20-24 hours put of my battery with real heavy usage. Around 2 days with normal use.
I keep my 3g and everything off until i need it.
HTC EVO 4G running Mikg 2.58
Don't know who your talkin too but I'll reply lol
On Classic I'm gettin roughly about 1d 19h 43m with pretty decent usage text, call, xda, browsing jus putting it to charge right now
I have always had the best success with AOSP and custom kernel.
Currently running ICSmod7 with latest tiamets. With 4g it drops fast but without I get through a full day no worries medium use. Text, fb, music during workout ect...
Sent from my PC36100 using xda premium
Getting good battery life with MikG 2.61.
mikg rom to me is best for battery life .and very stable rom and clean so try and let us know .im running miui and battery life is pretty good but not as good as my mikg rom
sense-free
I've been experimenting with ROMs and kernels for the last 18 months, always looking for best battery life with regular to heavy use. A good custom kernel will sometimes give you an extra 10-15 %. Using setCPU or another app like systemtuner (my pref) to turn CPU down while screen off can also give you 5-10%. Far and away the best thing for my battery is to use an alternative launcher (ADW for me) and then use Titanium backup pro or systemtuner to freeze sense. you just find the two elements in the process list that start with "HTC sense" and freeze them. Night and day. FYI I run synergy and have always come back to Myn's ROMs cause they are good for battery from the start, but they also take well to pretty much any custom kernel, which isn't true for all ROMs. I like everything to work so I always ditch AOSP ROMs a few days after trying them.
sam9696 said:
I've been experimenting with ROMs and kernels for the last 18 months, always looking for best battery life with regular to heavy use. A good custom kernel will sometimes give you an extra 10-15 %. Using setCPU or another app like systemtuner (my pref) to turn CPU down while screen off can also give you 5-10%. Far and away the best thing for my battery is to use an alternative launcher (ADW for me) and then use Titanium backup pro or systemtuner to freeze sense. you just find the two elements in the process list that start with "HTC sense" and freeze them. Night and day. FYI I run synergy and have always come back to Myn's ROMs cause they are good for battery from the start, but they also take well to pretty much any custom kernel, which isn't true for all ROMs. I like everything to work so I always ditch AOSP ROMs a few days after trying them.
Click to expand...
Click to collapse
Underclocking your CPU typically causes higher battery drain... unless you're overclocking. As long as nothing is really hammering the CPU in the background (which is the problem, not the CPU speed!), then it's better to let the CPU enter higher power states in order to finish the work quicker and return to low power sleep state. Intel calls this HUGI (Hurry Up and Get Idle). Overclocking can have bad effects with HUGI due to the higher voltage required to run at those frequencies. Lol'd at your AOSP comment though. I suppose some people are okay with subpar android, aka sense .
My Evo can last a week on a single charge. CM7.1, 1850 mAh aftermarket battery (slim, stock battery cover), Tiamat 4.1.0 kernel, aggressive undervolting and monitoring of wakelocks combined with 90% wifi usage (3g is the #1 source of battery drain!).
Sent from my Transformer TF101
Tommytomatoes The Classic is a solid sense rom with good battery life its fast as hell, has lots of mods and themes and is pretty sick I've been stuck on it for over a month now I've flashed other roms but always come back to the classic after a few hours
Sent from my Classic-EViLizED-ToMAToFiED-EVo4g-
maybe a dumb question. What is the difference between underclocking and undervolting?
Gary13579 said:
Underclocking your CPU typically causes higher battery drain... unless you're overclocking. As long as nothing is really hammering the CPU in the background (which is the problem, not the CPU speed!), then it's better to let the CPU enter higher power states in order to finish the work quicker and return to low power sleep state. Intel calls this HUGI (Hurry Up and Get Idle). Overclocking can have bad effects with HUGI due to the higher voltage required to run at those frequencies. Lol'd at your AOSP comment though. I suppose some people are okay with subpar android, aka sense .
My Evo can last a week on a single charge. CM7.1, 1850 mAh aftermarket battery (slim, stock battery cover), Tiamat 4.1.0 kernel, aggressive undervolting and monitoring of wakelocks combined with 90% wifi usage (3g is the #1 source of battery drain!).
Sent from my Transformer TF101
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Click to collapse
Underclocking is when you set the speed of the processor to a lower setting than the stock clocks where as undervolting is lowering the voltage needed to run it at a certain speed be it stock underclocked or overclocked. Simplest way I understand it.
Sent from my PC36100 using Tapatalk
Real culprit for batt issues
Has anyone ever bothered to understand that theres a pesty bug no one knew of.. Called CIQ "carrier IQ"
Ya this is one of the main reasons behind bad batt.. Sprint and other carriers allow a company to monitor and chart everything we do and it mirrors off txts and data sent and is designed to pick up on.key words... Basically an Invasive tracking monitor. It's a huge in noticed drain... And its been shown to be removed from system/app in many custom roms. But it never does cause its so strattled throughout the OS.
Sent from my PC36100 using XDA Premium App
IMPuLSe EX said:
I need opinions, anyone?
I keep flashing different ROMS and the battery has always had bad life
I've done a lot of different methods to fix battery life issues, but no go.
Click to expand...
Click to collapse
I have been using evodeck v1.3 with the lee kernel and the rom just sips on my battery and gives me outstanding battery life with amazing speeds
lojak29 said:
Has anyone ever bothered to understand that theres a pesty bug no one knew of.. Called CIQ "carrier IQ"
Ya this is one of the main reasons behind bad batt.. Sprint and other carriers allow a company to monitor and chart everything we do and it mirrors off txts and data sent and is designed to pick up on.key words... Basically an Invasive tracking monitor. It's a huge in noticed drain... And its been shown to be removed from system/app in many custom roms. But it never does cause its so strattled throughout the OS.
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
"no one knew of" are you kidding me? Carrier IQ has been known about for at least a year now... and no, it's not responsible for any significant amount of battery drain...
Sent from my Transformer TF101
Definantly aosp in my experience. Cm7 gets my vote for battery life
Gary13579 said:
Underclocking your CPU typically causes higher battery drain... unless you're overclocking. As long as nothing is really hammering the CPU in the background (which is the problem, not the CPU speed!), then it's better to let the CPU enter higher power states in order to finish the work quicker and return to low power sleep state. Intel calls this HUGI (Hurry Up and Get Idle). Overclocking can have bad effects with HUGI due to the higher voltage required to run at those frequencies. Lol'd at your AOSP comment though. I suppose some people are okay with subpar android, aka sense .
My Evo can last a week on a single charge. CM7.1, 1850 mAh aftermarket battery (slim, stock battery cover), Tiamat 4.1.0 kernel, aggressive undervolting and monitoring of wakelocks combined with 90% wifi usage (3g is the #1 source of battery drain!).
Sent from my Transformer TF101
Click to expand...
Click to collapse
So you clearly don't talk on the phone at all.
Sent from my PC36100 using XDA App
alaman68 said:
So you clearly don't talk on the phone at all.
Sent from my PC36100 using XDA App
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Click to collapse
Ah yes, the people that come in arguing and debating my claims. This happens every time. I use my phone quite often, and still get amazing battery life.
Sent from my Transformer TF101
Gary13579 said:
Ah yes, the people that come in arguing and debating my claims. This happens every time. I use my phone quite often, and still get amazing battery life.
Sent from my Transformer TF101
Click to expand...
Click to collapse
Dude you have a serious problem I honestly think you need to quit thinking people are attacking you this is the 3rd time I've seen you in a thread that I'm in and not once have I seen you post anything good or helpful I honestly think you should refrain from posting that's my opinion only cause I think your on a kid level and you really can't carry an easy conversation with someone sometimes I wonder if you even have this phone and if your trolling EVO Forum instead of the Transformer Forum.
TrevE Supporter!
If you like being on this site everyday!
I suggest you click this link a fill it out!
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Then HIT THE THANKS!

Whats the best rom + kernel for battery?

I havent found a thread that actually answers this question straight forward. Please dont say search the forum because i have. I just need something to make the best out of my phones battery because i need to go ALONG time without plugging in my phone. Hope someone has an answer for me. Thanks
twolfekc said:
I havent found a thread that actually answers this question straight forward. Please dont say search the forum because i have. I just need something to make the best out of my phones battery because i need to go ALONG time without plugging in my phone. Hope someone has an answer for me. Thanks
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Click to collapse
I have had exceptional battery life using BEASTMod.
Just my opinion
they are all good imo, im currently using gingersnap rom, has the faux kernel and i get over 20 hours of some what heavy use, and so it went with juggernaut, beast mod, and bombardier.
but the faux kernel has proved to be smoother and more efficient imo, perhaps slightly better battery.
hope i could help
I like Juggernaut + Bullet.
I am trying to make the most of my battery by:
-underclocking to 384-16xx
-turning on Battery Saver
-running Juice Defender
Anyone know how to undervolt on Bullet?
I am a heavy battery user. I use my phone all day constantly on Netflix (through Wifi) and listening to music with web surfing. I get about 16 hours on it everyday and come home with 4%-30%. It is very odd on why my battery percentage is such a big range. Screen is on like half the day. I really can not complain about this battery.
I am trying to figure out the best setting on tuner pro for dewizzed 2.0. I am only getting like 6 to 8 hours on my phone. When I've seen others get close to 24 with light to moderate use. The rom is Dewizzed 2.0, and I know the some people have the same rom while using tuner pro. I would ask the dev in the devolpment section, but I don't have permissions to do so. Also Hello everyone in xda. I am a long time visitor since the G1 days. I made this account a long time ago, but recently got tired of touchwiz, and decided to give it the boot lol.
Oreo13 said:
I am trying to figure out the best setting on tuner pro for dewizzed 2.0. I am only getting like 6 to 8 hours on my phone. When I've seen others get close to 24 with light to moderate use. The rom is Dewizzed 2.0, and I know the some people have the same rom while using tuner pro. I would ask the dev in the devolpment section, but I don't have permissions to do so. Also Hello everyone in xda. I am a long time visitor since the G1 days. I made this account a long time ago, but recently got tired of touchwiz, and decided to give it the boot lol.
Click to expand...
Click to collapse
I am running Dewizzed 2.0 with Synergy kernel and using System Tuner Pro, 1.62max 384min, 384max and 192min with screen off and am not UV because Synergy is already UV. Getting well over 21 hours of use, light to moderate usage,
Sounds like you have a app that is using a lot of battery.
adclem said:
I am running Dewizzed 2.0 with Synergy kernel and using System Tuner Pro, 1.62max 384min, 384max and 192min with screen off and am not UV because Synergy is already UV. Getting well over 21 hours of use, light to moderate usage,
Sounds like you have a app that is using a lot of battery.
Click to expand...
Click to collapse
Thanks I was looking into Synergy, but I heard there was a noticeable lag with that kernel. Could be wrong though. I really do appreciate your help. Lol. If I'm correct I believe you are a mod here.
Sent from my SGH-T989 using xda premium
Oreo13 said:
Thanks I was looking into Synergy, but I heard there was a noticeable lag with that kernel. Could be wrong though. I really do appreciate your help. Lol. If I'm correct I believe you are a mod here.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
I noticed a bit of lag when I first flashed Beast Mod w/Synergy. Try this before you flash, it worked for me and my phone is buttery smooth. Boot into recovery wipe cache 3 times, wipe dalvik 3 times. Then go into advanced, then mounts and storage. Format system. Flash synergy, then fix permissions. Reboot, enjoy. Also Im running zepplinrox's V6 supercharger script. That helps out with smoothness too!
Use faux kernel with fauxclock app. Max 1.5 min 384 then max 384 min 384 with screen off
seanyuan62 said:
Use faux kernel with fauxclock app. Max 1.5 min 384 then max 384 min 384 with screen off
Click to expand...
Click to collapse
Can i use this for the GT I9000? [Galaxy S1]
EskDroid said:
Can i use this for the GT I9000? [Galaxy S1]
Click to expand...
Click to collapse
No you can't.
Sent from my SGH-T989 using xda premium
well the best thing to do for any rom is under volt and min the cpu speed i think ginger snap is good for both kernel and rom
Best battery, bombardier 3.0+synergy V.10 for extra battery life I use juice defender, 1day and change with moderate usage.
Welcome to the DARKSIDE

[Q] How can I get longer battery life [suggestions about Roms, Custom Kernels, etc]

Hi guys!
This One X is very performing smartphone, games are really pretty... But I can stand that battery problem! I've tried so many rom, using setcpu for ondemand governor of the Tegra3... But I still not have so many battery life!
Can you guys suggest how rom, kernel or something else can save my battery?
Generic suggestions about this problem... Now I'm using Jdroid exodized 3.0.3 with bricked kernel v0.2, but battery is so draining... 63 % of battery with 1.37 hours of screen.. 4 h 22 min on it! =(
Hi!
I see a lot of people complaining about battery life, but if you take a look around you'll find the thread where people posted their battery usage. Me - I'm using rooted OneX running the stock ROM and am more than satisfied as far as battery life goes. I do 15 hours with ease. If I try to save it it usually lasts for more than 24 hours. Maybe you could try stock rom + root ... maybe a little underclock? I've been hearing underclock is quite the juice saver.
Hi,
I am the same I have tried custom Rom's but they claim to improve battery life but they just move the tegra 3 powersaving driver into the correct place!
I have a unlocked O2 HTC One X with O2 Rom and flashed battery fix and rooted the device!
Using this thread: http://forum.xda-developers.com/showthread.php?t=1597227
I have managed to setup a shortcut using widgets on the screen to select how many cores I want to use. I find that using one core clocked at 1.5GHz is fast enough and I don't have much lag! This has helped my battery massively! This is because O2 still haven't pushed through the HTC updates yet!
And also using this thread: http://forum.xda-developers.com/showthread.php?t=1630200
I flashed this using CMW and this has also helped.
I also find disabling some stock apps using App Managment in Settings, also using CPU spy from the Play Store and Battery Usage in settings. I can find the apps that use the most CPU power then uninstall or limit their usage (maybe using the internet instead of a dedicated app) this then has the phone stay in Deep Sleep for longer. I can easily get through 24hrs without having to try to save battery at all! I sometimes have almost got two days without charging!
Another tip is in the Usage app you can Restrict Background data over the network although when you connect to your WiFi it enables it again. Although it is meant to help save your Data it can also help your Battery Life.
Hope this helps!
Steven
Thanks for the answer!
I noticed that, in this Rom that I'm trying, I've the Screen that consume a lot of battery, even in the lowest brightness mode. Not using WiFi, 3g data, autosync, nothing, only a lot of text message received and sent. I think that this S-LCD2 consume a lot of battery or maybe the software of HTC, this time, is a loot poor of balance with this expensive hardware.
Do you think I can improve battery life with the tips that you said? I'm using this ROM right now http://forum.xda-developers.com/showthread.php?t=1597778.
Setting CPU to ondemand governor 304 mhz min and 1.5 ghz doesn't help me? I must disable some cores? I can give it a try, hope that this tips can be made in this AOSP Senseless Rom.
stevepork said:
Hi,
I have a unlocked O2 HTC One X with O2 Rom and flashed battery fix and rooted the device!
Using this thread: http://forum.xda-developers.com/showthread.php?t=1597227
Click to expand...
Click to collapse
The link in which I can download the correct NvCPLSvc.apk in that thread doesn't work
Screen will always be the biggest battery drain if you are using the phone.
Sent from my HTC One X using xda premium
joshnichols189 said:
Screen will always be the biggest battery drain if you are using the phone.
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
I'm asking myself [ and you ] if this screen consume really a lot amount of battery... Or there is some problem with my one x... Reaching the 3+ hours screen on is a good result, but in a 15 h battery day life, I hope... Maybe I can reach disabling a couple of processors
Don't worry about the screen, it will always take a lot of power whatever you do! It isn't worth messing with it.
You don't need to mess with the CPU although personally it does make a diffrence to the battery, I don't notice it too unless I am gaming!
Maybe an app is preventing your phone from going to deep sleep whilst the screen is off
Try using this app: https://play.google.com/store/apps/details?id=com.bvalosek.cpuspy&hl=en
If it says that your phone hasn't been in deep sleep, We need to try and find the culprit. Once you have done this maybe post back and I might be able to help you sort this out! It took me a while as I had this problem but it was definatly worth the effort!
Try looking in battery in the settings and see if there are any apps that are using a lot of power (maybe take a screen shot) and also try in Data Usage, there maybe apps using the Internet whilst you aren't using the phone. This also wastes the battery. If you restrict background usage (only on certain apps) it will only use the Internet in the background whilst you are connected to wifi only. Facebook is a good example!
Hope this helps
Steven
If you don't understand anything please say, I know my explanations are awful but I will try my best! I think I have changed everything here to fit your rom!
The rom itself although you or the developer know this but the overall system could be causing a problem! (just a theory!)
stevepork said:
Don't worry about the screen, it will always take a lot of power whatever you do! It isn't worth messing with it.
You don't need to mess with the CPU although personally it does make a diffrence to the battery, I don't notice it too unless I am gaming!
Maybe an app is preventing your phone from going to deep sleep whilst the screen is off
Try using this app: https://play.google.com/store/apps/details?id=com.bvalosek.cpuspy&hl=en
If it says that your phone hasn't been in deep sleep, We need to try and find the culprit. Once you have done this maybe post back and I might be able to help you sort this out! It took me a while as I had this problem but it was definatly worth the effort!
Try looking in battery in the settings and see if there are any apps that are using a lot of power (maybe take a screen shot) and also try in Data Usage, there maybe apps using the Internet whilst you aren't using the phone. This also wastes the battery. If you restrict background usage (only on certain apps) it will only use the Internet in the background whilst you are connected to wifi only. Facebook is a good example!
Hope this helps
Steven
If you don't understand anything please say, I know my explanations are awful but I will try my best! I think I have changed everything here to fit your rom!
The rom itself although you or the developer know this but the overall system could be causing a problem! (just a theory!)
Click to expand...
Click to collapse
You're too fine with me steven, thanks!
I've downloaded Cpu Spy and it says that my one x has been in deep sleep for 70 % of time, so there is no problem with some apps doing something during screen off. My problem is that when I'm using all 4 cores, without internet via wifi or 3g, without autosync, nothing at all, and screen at lowest brightness, there is still a drastic battery drain while I'm using only Message app a lot. I don't wanna think that my HOX have a fault battery, but how can I test and prove it ? I don't know if there is a program, app or test for doing this thing.
Now I'm with that ROM Senseless AOSP ICS, I will try next charge with two cores actives only and view how much I can stay with that SetCpu settings. I'm using this settings: 101% Battery <, CPU Max 1Ghz to 51Mhz and priority 100, governor ondemand ; screen off, CPU Max 1Ghz to 200 mhz and priority 100, governor ondemand. I'll give you the result soon.
you need to give it time to settle the battery mate. i manage to go a day or two and have like 3 hours screen on time and that is with everything on. if you need any help send me a PM mate and i see what i can do to help you. and i would not use SetCpu for now i am using No-Frills. And switch from ondemand to Interactive. and that is with 1.5Ghz as max and 100mhz mininum
Goku80 said:
you need to give it time to settle the battery mate. i manage to go a day or two and have like 3 hours screen on time and that is with everything on. if you need any help send me a PM mate and i see what i can do to help you. and i would not use SetCpu for now i am using No-Frills. And switch from ondemand to Interactive. and that is with 1.5Ghz as max and 100mhz mininum
Click to expand...
Click to collapse
I agree that you should not use set CPU although you are best using ondemand as that is only using the amount of power you need, interactive keeps the speed high to increase the overall speed. (not good for battery life) also maybe, my mothers Samsung Galaxy S2 had battery problems and she got 6hrs of battery out of her phone at max, she always carried her charger around.
I calibrated the battery without using any software, I just fully charged the device and left video/audio/maps on to get rid of the battery as fast as I could and then fully charged the device. All I am trying to say is give this a shot (I did this when I first got my phone) she now gets on average 2days battery life! I know that it can take ages but it is defiantly worth the effort!
Hope this helps
Steven
Also, how do you find that ROM it looks great. I think I might try it!
stevepork said:
I agree that you should not use set CPU although you are best using ondemand as that is only using the amount of power you need, interactive keeps the speed high to increase the overall speed. (not good for battery life) also maybe, my mothers Samsung Galaxy S2 had battery problems and she got 6hrs of battery out of her phone at max, she always carried her charger around.
I calibrated the battery without using any software, I just fully charged the device and left video/audio/maps on to get rid of the battery as fast as I could and then fully charged the device. All I am trying to say is give this a shot (I did this when I first got my phone) she now gets on average 2days battery life! I know that it can take ages but it is defiantly worth the effort!
Hope this helps
Steven
Also, how do you find that ROM it looks great. I think I might try it!
Click to expand...
Click to collapse
if it is me you are asking about the rom mate it is really good highly recommend it
I don't know guys... My phone without two cores seems to have more battery with setcpu on demand declocked at 1 ghz... But I mean, this screen... Lowest brightness, consumes a lot... Wanna try some other roms, like X Touch Xtreme or InsertCoin =)
Goku80 said:
you need to give it time to settle the battery mate. i manage to go a day or two and have like 3 hours screen on time and that is with everything on. if you need any help send me a PM mate and i see what i can do to help you. and i would not use SetCpu for now i am using No-Frills. And switch from ondemand to Interactive. and that is with 1.5Ghz as max and 100mhz mininum
Click to expand...
Click to collapse
cant get over 2 and 20mins screen time before my battery dies.
i dont play games just texting,calling,browsing and a bit gps using..
i get 12-15 hours but cant get a good screen time
patomo09 said:
cant get over 2 and 20mins screen time before my battery dies.
i dont play games just texting,calling,browsing and a bit gps using..
i get 12-15 hours but cant get a good screen time
Click to expand...
Click to collapse
go into settings-sound and untick the lockscreen sounds and untick the touch keypad sounds to. come out and reboot the phone and charge...let me know if you have those two options ticked
Goku80 said:
go into settings-sound and untick the lockscreen sounds and untick the touch keypad sounds to. come out and reboot the phone and charge...let me know if you have those two options ticked
Click to expand...
Click to collapse
What is this meant to do!!
And thanks, I am going to try that ROM now, just backing up mine now!
stevepork said:
What is this meant to do!!
And thanks, I am going to try that ROM now, just backing up mine now!
Click to expand...
Click to collapse
What, The Senseless I've meant? Tell me what you think!
P.s. Seems that the Leedroid 6 Rom with Franco kernel it's a good couple for battery life. Read this one, post #33 : http://forum.xda-developers.com/showthread.php?t=1648687&page=4
In this Rom, The Jdroid Exodized, I can't try the HTC Battery Test. When I'm trying new one Rom with sense, I will keep in mind to do that.
In the mean time post your suggestions about other roms or other tips for this tooooo much powerful phone =)
stevepork said:
What is this meant to do!!
And thanks, I am going to try that ROM now, just backing up mine now!
Click to expand...
Click to collapse
it is meant to stop the audioout_3 wakelock from draining battery while the screen is off. install betterbatterystats. leave all your stuff in sounds ticked..then charge your battery to the full and seee what i mean once you start testing the battery
Goku80 said:
you need to give it time to settle the battery mate. i manage to go a day or two and have like 3 hours screen on time and that is with everything on. if you need any help send me a PM mate and i see what i can do to help you. and i would not use SetCpu for now i am using No-Frills. And switch from ondemand to Interactive. and that is with 1.5Ghz as max and 100mhz mininum
Click to expand...
Click to collapse
Sorry goku, I want to ask you if you reached the point of 3 hours screen on with everything on, with a day or two with battery! I read that you're using leedroid v 6 with bricked kernel v 0.3, how is battery life with this software? Thanks for the answer!
VillainROM v2 + Franco Kernel.
Sent from my HTC One X using XDA

Why do I get horrible battery life with ROMS and Kernels?

I've used cm9 and aokp the past month and tried the stock Kernels that come with it and Franco's. One thing is for certain. No matter combination I get horrible battery life. If I run stock android with my extended battery including various Widgets I get 24 hours battery life pretty easily. Moderate usage and some heavy usage. With cm9 I'm getting maybe 15-16 hrs with aokp maybe 8-9 hers and I'm using Franco's kernel right now. I don't understand this. People talk about how much better the battery life is with various ROMS than stock but I'm not getting it. I'm getting like half the battery life I was before. Any ideas?
Sent from my Galaxy Nexus using Tapatalk 2
I can relate to you. Was in CM9 and Franko's kernel and as you said, horrible battery life. I went back to stock but this time I did not install apps thar would require services running (well I have to run WhatsApp so that's the only one running besides default abdroid services).
I am seeing better battery life this way.
The next step would be to install CM9 and restore all my apps to see if I can replicate the same battery life.
Sent from my Galaxy Nexus using Tapatalk 2
you need to find out what apps are keeping your phone from sleeping dude its not the ROM or Kernel if you want to find out you can use better battery stats or just read the permissions on your apps otherwise its probably cause your on your phone too much with the screen on first show use a usage screen shot then how many apps you have we can narrow it down
dislplin01 said:
you need to find out what apps are keeping your phone from sleeping dude its not the ROM or Kernel if you want to find out you can use better battery stats or just read the permissions on your apps otherwise its probably cause your on your phone too much with the screen on first show use a usage screen shot then how many apps you have we can narrow it down
Click to expand...
Click to collapse
^This, and how much on screen time are you getting?
Ngo93 said:
^This, and how much on screen time are you getting?
Click to expand...
Click to collapse
I'm getting about 1.5 hrs screen time. With stock in was getting 2-3hrs. As far as apps keeping my phone from sleeping. I'm running the same apps I run on stock android when I was getting a full day on average so not sure how they would run different because I'm on a ROM.
Sent from my Galaxy Nexus using Tapatalk 2
get better Battery stats app... And check for partial wakelocks...
I had exactly same problem... And on stock no problems
But now... Franco m4 + aokp b37
And 3 to 3.5 hours screen
Sent from my Galaxy Nexus using XDA
I used that better battery stats app and apparently there was audio something (sorry can't remember the exact words) causing partial wakelocks, read some google search results and disabled the lock screen sound in aokp and it went away, go figure?
I swear my battery life is better with the kernel that comes with AOKP rather than franco, which was a bummer since I'd just bought the franco updater app, perhaps just my imagination or maybe something just needs to be tweaked
Well, this has pretty much nothing to do with the ROMs/kernels, you flash to the device. If you use the device for heavy gaming, you use loads of apps etc. the battery life will obviously be bad, because the CPU needs the according CPU clock speed...
Underclock the CPU, or better: Get AnTuTu CPU Master pro, and set the profiles, underclock screen off, to 700 MHz, and every other proile, where you do not neccessarily need the device to that speed, not below, otherwise it will just crash... That way you have the best battery life, for your usage, so basically, every time you switch the device's screen off, it will save a hell of a load of battery
Under clocking doesn't do much for battery life contrary to popular belief. It just increases the time it takes to process a task. It might take 1s at 1.2ghz vs 1.8s at 800ghz to complete a given task for example. So yes the cpu will run at lower speed and voltage but it still also take longer to return to idle.
Sent from my GNex
dr.m0x said:
Under clocking doesn't do much for battery life contrary to popular belief. It just increases the time it takes to process a task. It might take 1s at 1.2ghz vs 1.8s at 800ghz to complete a given task for example. So yes the cpu will run at lower speed and voltage but it still also take longer to return to idle.
Sent from my GNex
Click to expand...
Click to collapse
Well, I don't really mean to break this, because it is right, but not completely...
Underclocking & undervolting, when the device is not in use (Screen off) saves loads of battery...
And because it's a dual-core, it takes mostly just as long to open an app at 700 MHz, as when you're doing it at stock clock speed, or voltage or higher.. So, in that case...
familyguy59 said:
Well, this has pretty much nothing to do with the ROMs/kernels, you flash to the device. If you use the device for heavy gaming, you use loads of apps etc. the battery life will obviously be bad, because the CPU needs the according CPU clock speed...
Underclock the CPU, or better: Get AnTuTu CPU Master pro, and set the profiles, underclock screen off, to 700 MHz, and every other proile, where you do not neccessarily need the device to that speed, not below, otherwise it will just crash... That way you have the best battery life, for your usage, so basically, every time you switch the device's screen off, it will save a hell of a load of battery
Click to expand...
Click to collapse
Not sure how this wouldn't have to do with the different ROMS and kernels since I stated what battery life I was getting with stock vs using a custom kernel and ROMS. I'm giving a comparison of my battery on each with the same usasge and they are different.
Sent from my Galaxy Nexus using Tapatalk 2
0kk0 said:
get better Battery stats app... And check for partial wakelocks...
I had exactly same problem... And on stock no problems
But now... Franco m4 + aokp b37
And 3 to 3.5 hours screen
Sent from my Galaxy Nexus using XDA
Click to expand...
Click to collapse
Thank you! I will look into this!
Sent from my Galaxy Nexus using Tapatalk 2
azlemad said:
I used that better battery stats app and apparently there was audio something (sorry can't remember the exact words) causing partial wakelocks, read some google search results and disabled the lock screen sound in aokp and it went away, go figure?
I swear my battery life is better with the kernel that comes with AOKP rather than franco, which was a bummer since I'd just bought the franco updater app, perhaps just my imagination or maybe something just needs to be tweaked
Click to expand...
Click to collapse
I will look into this as well! Thanks!
Sent from my Galaxy Nexus using Tapatalk 2
Okay so today I tried MIUI. The battery life blows stock android, aokp and cm9 away. I had over 3hrs of screen time today. Night and day compared to cm9 and aokp. I really don't get this.
Sent from my Galaxy Nexus using Tapatalk 2

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