Database Users

Best Kernel for battery

Which ROM performs the best in terms of battery performance. If you are using any Governor and I/O setting please do mention them.

PA rom...Franco kernel...ondemand settings...

I'm also curious on what you guys experienced.
I'm currently testing Franco R15 with Stock JB on my Nexus 4. It's the first day and I'm running for 9 hours with 1h 46M of screen time.
So I'm expecting about 3h 30m of screen time.
Will give it a fews days and report back. Then I'll try out Matr1x.

Please use search next time because there are threads with the same exact title. No such thing as a best kernel. It is subjective such as if you were to ask the question, what is the best car for conserving gas usage.
Sent from my Nexus 4 using xda premium

My first cycle (settings on signature) gave me almost 4hs of screen time.
Trying second cycle today.

calanizzle said:
My first cycle (settings on signature) gave me almost 4hs of screen time.
Trying second cycle today.
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your sig is wrong, unless you are running 4.1.2?

calanizzle said:
My first cycle (settings on signature) gave me almost 4hs of screen time.
Trying second cycle today.
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Click to collapse
4.1.2????
Sent from my Nexus 4 using Tapatalk 2

This is what I'm getting constantly and I'm running Stock everything/rooted... not sure if I would leave stock with these numbers I'm getting... Anyone getting better numbers with custom ROM/kernel
Sent from my Nexus 4 using xda premium

fresh_TD said:
This is what I'm getting constantly and I'm running Stock everything/rooted... not sure if I would leave stock with these numbers I'm getting... Anyone getting better numbers with custom ROM/kernel
Sent from my Nexus 4 using xda premium
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That's really good. I'm getting 4 hours 45 min running Xylon 012 with Matr1x 3.0
Sent from my Nexus 4 using Tapatalk 2

Jefferyrbrown1983 said:
That's really good. I'm getting 4 hours 45 min running Xylon 012 with Matr1x 3.0
Sent from my Nexus 4 using Tapatalk 2
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I'm going to give francos kernel a run to see if I can squeeze a little more out the battery
Sent from my Nexus 4 using xda premium

I'm on Stock rooted using Franco's R15 kernel since a couple of days. Every charge cycle brings a slight improvement. Will test the kernel for a week and then flash Matrix's kernel and compare.

Thanks for letting us know.
Sent from a galaxy far far away.

Wish I had better battery life
Sent from my Nexus 4 using xda premium

for best battery : CM10.1 + faux kernel (the last beta) + intellidemand + UV -150mv .
+5h00 screen on

fresh_TD said:
This is what I'm getting constantly and I'm running Stock everything/rooted... not sure if I would leave stock with these numbers I'm getting... Anyone getting better numbers with custom ROM/kernel
Sent from my Nexus 4 using xda premium
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So ~5 hours screen time. And you got 1.4 days on WiFi with hardly any awake time. That's not really a good measure of battery life.
I don't know about everyone else, but I find the Nexus 4 gets really good battery life. Maybe not as good as the GSIII or the H1X+, but those have tremendously aggressive power-saving features.
Using faux kernel with Snake Charmer (caps max freq on all 4 cores) and Eco Mode (only allows 2 cores to be simultaneously active) provides adequate performance with very good battery life; even better if you undervolt. You will definitely beat the GS3 or H1X+ with those faux kernel settings. I don't use Eco Mode, because my phone lasts nearly a day, and I can charge it mid-day. I should probably be more conservative so I won't have to replace the battery as soon, buttphuckit, I do what I want.

I've used faux, Franco, motley, and Matr1x a lot. As of now, the best battery with performance goes to Matr1x by Mathkid. Version 2.5 undervolts by 150, which my phone runs fine. However, a few people had instability because it was too low for their devices. Enter v3.0, which undervolts by 100 (and you can uv even more using System Tuner or perhaps Faux app). Either way, great battery life (I routinely get 5 hours screen time with 16 hours battery time, or 4 hours screen with 24 hours total, etc).
Absolute best battery life is probably faux with his battery optimized settings (1.35 max speed, snake charmer, eco mode, and some undervolt by 100 or so). It runs fairly well, but it's not as quick and smooth as stock because it sacrifices some of that for battery (fair trade off if you need it because it's still a damn fast phone). People have gotten 6 and even 7 hours screen time. Obviously this won't happen playing games but it's possible with light browsing and texting and whatnot.
Motley's kernel also gets good battery and excellent performance. Franco's kernel does too, but not quite as good of battery because it doesn't support undervolting YET. When it does, it might be the best battery for performance of all (likely).
I use Matr1x daily and am happy with it. Some people, even smart devs, will sometimes tell you undervolt battery gain is negligible. However, at least with this device, it can make a huge difference because it handles such a big undervolt while remaining stable. It also stays much cooler and will run at high clocks longer before reaching the thermal throttling limit.
Anyway, some people might disagree, but these are my experiences. Franco has a huge following and for good reasons. His kernels are awesome. I just don't think the battery life will compete until he adds undervolting. He has said this will come when he feels it is stable and good overall. I'll probably switch then unless Mathkid adds more features to his like gamma control, etc.
Hope this is helpful. Btw, another thing I really like about Matr1x kernel is that he uses the older touchscreen driver which increases screen sensitivity. Many people complain about the nexus 4 screen sensitivity, and if that applies to you, this will fix that.
Sent from my Nexus 4 using Tapatalk 2

^^ A good write up, deserved its thanks. Am on latest rasbean & matr1x, never experienced smoothness & battery life like this. Screenshots at the Matr1x thread later today.
However, all users are different. Battery life WILL differ, that's the only certain thing.

[Q] The most battery friendly ROM???

Hello, I just wanted to ask which ROM has the longest battery life (in screen hours)...
The most battery frienly rom i have ever tried was liquidsmooth...
What do you think?

Guys please help out a new N4'er like myself. I'm stock right now and the number of Roms are kinda overwhelming. I'm only interested in battery life. I'm not in the mood to go flashaholic searching for that one ROM.
Sent from my Nexus 4 using XDA Premium HD app

The most important thing is the kernel and the apps you have installed.
Find the ROM with the features you like and flash a battery friendly kernel. I currently use Matrix kernel because the lower CPU idle makes the phone sip battery while the screen is off, leaving you more for actual use.
Good luck. Also, INB4L.

There is no "best Rom" for battery. It's all in how you use your phone, what apps you use, the signal strength in your area and of course the kernel you flash and how you set that kernel up.
100 different people could reply with the Rom they feel is best for battery and which kernel and you still may have different results than they do
Sent from my Nexus 4 using Tapatalk 2

From what I've learnt the kernel directly dictates battery life.
but I've personally opted for lean roms. If you're using a heavy rom and frequently putting load on the processor surely the battery will burn down fast. I've been using rasbeanjelly bouncing between franco/trinity and the battery life has been awesome for me.
Btw franco's r121 is godlike for me right now, in terms of both performance and battery life.

Im using liquidsmooth which comes with matrix kernel in the official release.
Im getting very good battery life probably because the cpu min is lowered to 288mhz instead of the normal 384.
Performance on the rom is great also with antutu scores over 20000
Ive tried francos, for some reason it didnt quite work for me but it is very popular because of the great balance between battery and performance. Youll get even more battery life out of faux and if you want blazing fast speeds try out trinity

Battery depends on the kernel, not on the rom.

Battery life depends on a number of factors, kernel being one of them. If you set your screen brightness at maximum high, you will see battery drain like water down the toilet. Screen brightness is the single major factor. Kernels don't really matter. It's the apps you install and run on your phone that can kill battery life. Apps like Facebook will suck down your battery like there's no tomorrow. Auto sync'ing and pushing and pulling data to and from your phone will make your battery life go down really fast. GPS and using google maps can contribute mightily to your battery woes as well.
To keep your phone from dying, just get an external battery pack and charge your phone as necessary. I have a 5400 mAh pack that can charge my n4 at least a couple of times. I never worry about running out of battery and I use my phone the way it's supposed to be used.

Underground_XI said:
Battery depends on the kernel, not on the rom.
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Battery does depend on the rom...
For example a linaro compiled rom will require less work of the cpu to move the os due the optimization.
Also some rom have init.d scripts that can help battery life a lot and there is the possibility that some programs like systemUI can have a little bug that the user dont know about it but its draining battery
The battery life depends on a lot of factors of the rom

Underground_XI said:
Battery depends on the kernel, not on the rom.
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You are completely wrong. As said before, battery life depends on a lot of things. The kernel is a big factor, but not everything. The way u use ur cpu, the scripts u apply or ur build.prop configurarion can be very decissive.
IMHO paranoidandroid 3.1 is the most battery saving ROM
Enviado desde mi Nexus 4 usando Tapatalk 2

Battery life tips?

My nexus 4 has dissapointing battery life, can someone please tell me any tips to increase the battery life? Obviously, lower the brightness, dont have too many apps running, try not to browse on chrome for too long, etc etc. Does anyone use any of the battery saving apps out there? Any tips would be appreciated. Thanks. Also, I dont understand why there are no mods/cases with an extended battery. Obviously the battery is not easily removed but I'd be fine with a thicker nexus4 if I could double my battery life.

root it and run custom ROMs and kernels, undervolt it and whatnot.
You can just buy a portable battery pack you know.. They aren't exactly expensive and serve the sane purpose as an extended battery case.

When people say that such device has got a disappointing battery life.. I wonder what it means. If a battery offers a sot of 8hrs..would this thing satisfy all?
I've used S3 which people say has got great battery life.. I got more or less the same battery life in s3 as i get from nexus 4...
Anyways..trying custom kernel and undervolting.it could give you better results..
Sent from my Nexus 4 using xda premium

Sak3ater said:
When people say that such device has got a disappointing battery life.. I wonder what it means. If a battery offers a sot of 8hrs..would this thing satisfy all?
I've used S3 which people say has got great battery life.. I got more or less the same battery life in s3 as i get from nexus 4...
Sent from my Nexus 4 using xda premium
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Agreed. I have friends with s3s, one x and iphone5, and I honestly do not think the battery is bad at all. I'm pretty sure the battery lasts longer for me than for them. And I'm not one for "disabling features" either.
I'm running wifi/data both on and I never manually disable anything. My GPS is on 24/7, and I have all tracking options enabled (for google now). Using auto-brightness though. Still get 4h SOT and I stay 30+h normally without a charge. I do not game alot on my phone though!
I recently re-flashed google stock images (4.2.2) and franco's kernel. Also undervolted but if I dont get any "better" (in terms of heat) results I will definatly remove the undervolting.

Danny.ns said:
Agreed. I have friends with s3s, one x and iphone5, and I honestly do not think the battery is bad at all. I'm pretty sure the battery lasts longer for me than for them. And I'm not one for "disabling features" either.
I'm running wifi/data both on and I never manually disable anything. My GPS is on 24/7, and I have all tracking options enabled (for google now). Using auto-brightness though. Still get 4h SOT and I stay 30+h normally without a charge. I do not game alot on my phone though!
I recently re-flashed google stock images (4.2.2) and franco's kernel. Also undervolted but if I dont get any "better" (in terms of heat) results I will definatly remove the undervolting.
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This what you doing is putting up one heavy burden on the battery.Never disabling wifi/data & GPS on 24/7..Still getting 4Hrs sot out of 30hrs total battery life .If this is not great than i wonder what great would be..There is only Razor max which is gonna satisfy in terms of battery
PS->If you game a lot on Nexus 4,then the battery wont last longer

Guys u can try deep sleep battery saver app aka ds battery saver.....it puts your phone into deep sleep as soon as screen goes off.........getting 10+ hrs on single charge.......mhav a try
Sent from my A21 using xda app-developers app

Have you tried Battery Guru? Developed by Qualcomm specifically for the Snapdragon S4 to improve battery life

You can try greenify, I believe the concept of this app is great and overnight on WiFi and the rest left on I loose only 2-3 percent. And wakelocks are pretty much gone.
Sent from my Nexus 4 using xda app-developers app

[Q] Franco r65 Kernel Settings

Anyone got any good r65 kernel settings for battery optimized? I love the Franco Kernel but my battery life is lacking. Especially when its in standby mode with the cover closed.
BTW, Im running PA 3.65 and downloading 3.67 as I type this..

The default settings are actually about as good as it gets, short of underclocking. You might consider trying another ROM to see if your battery problem improves at all. I liked PA a lot, but even without HALO my battery life was terrible.

ProblemChyld said:
Anyone got any good r65 kernel settings for battery optimized? I love the Franco Kernel but my battery life is lacking. Especially when its in standby mode with the cover closed.
BTW, Im running PA 3.65 and downloading 3.67 as I type this..
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Click to collapse
Use better battery stats to see what is keeping your device awake, it should use very little power in sleep.
May try using one of many apps that can turn off wifi in sleep and check out greenify.

This may not be exactly what you want to hear, but I switched over to Aospal, a linaro version of PA. I have had significantly better performance and battery, both of which vanilla pa failed to deliver. I also am using m kernel, and I lowered the CPU frequency cap to 1200 MHz. I am using otherwise its default settings. My battery life is more than doubled from when I was using vanilla pa. So if you are interested in switching, (it still has everything from pa!) this is working for me.
Sent from my Nexus 7 using Tapatalk HD

twizmwazin said:
This may not be exactly what you want to hear, but I switched over to Aospal, a linaro version of PA. I have had significantly better performance and battery, both of which vanilla pa failed to deliver. I also am using m kernel, and I lowered the CPU frequency cap to 1200 MHz. I am using otherwise its default settings. My battery life is more than doubled from when I was using vanilla pa. So if you are interested in switching, (it still has everything from pa!) this is working for me.
Sent from my Nexus 7 using Tapatalk HD
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Thanks for the insight on that. I guess I will give it a try and see how the battery life is.
Sent from my Nexus 7 using Tapatalk HD

Currently using r65 and coudnt complain about the battery.
While checking out roms, you could also look at apps you install. Some very poorly coded apps (especially facebook) would just eat up your battery, and use a lot of memory.

Kernel for battery life.

Hello.
I'm looking for a kernel for the Nexus 4 of course with the best battery life.
I almost don't play games, I just need a kernel with gamma control, sound control, and one that would not cause stutter to the device with battery life.
I used Franco r203 and I had only 1:30hr screen time, now I'm trying Franco r203 Plus but it cause stutter and pretty much the same battery.
Any suggestions?
Thanks!

I'm currently using hells-Core and have 2 hours of screen-on with 40% battery left.
(Maybe there are better battery-friendly kernels out there, but HC performs pretty well.)

I enjoy Faux Kernel and undervolt 50 and under clock to 1.2 I can make it through a day no worries but this will depend in your usage as well. I do probably medium of everything such as social networking, internet browsing, emails and some games. I usually end the day with above 20%
Sent from my Nexus 4 using Tapatalk

Wassupdog said:
Hello.
I'm looking for a kernel for the Nexus 4 of course with the best battery life.
I almost don't play games, I just need a kernel with gamma control, sound control, and one that would not cause stutter to the device with battery life.
I used Franco r203 and I had only 1:30hr screen time, now I'm trying Franco r203 Plus but it cause stutter and pretty much the same battery.
Any suggestions?
Thanks!
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You can try to use r201 is more battery friendly if you like franco.

AndyTimE said:
You can try to use r201 is more battery friendly if you like franco.
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Thanks, already got Hellscore and its good .

As you would have already known by know battery usage depends upon ROM build and apps and your usage patterns. To extend the battery a bit more you can Hellscore,Matr1x,Piasek kernels...they gave the best battery life for me. Try and let know
Sent from my Nexus 4 using xda app-developers app

Hell score or matrix?which should i use i want to have Hood quality od sound

Both are best but Matr1x retains smoothness for me as compared to hellscore.Flash both and test for yourself
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