Database Users

Battery life absolute trash?

So my N7 arrived two days ago, and I immediately unlocked, rooted, and flashed some things. Currently running Codename Android with Trinity Kernel.
My battery is absolute crap now though. Its been two days so I thought the battery more but have settled by now. All auto sync off, brightness at lowest setting, apps sync every 4 hours, still bad! Does calibrating still work? I read somewhere that it was debunked and it didn't work. I would appreciate any help. I mean, my Maxx is getting better battery life.
I uploaded some screenshots of the battery after only 1 and a half hours.
Sent from my Nexus 7 using Tapatalk 2

dafuq?
My Battery life is without doing nothing ~1-2weeks (in my with 58% xD)
Use Stock Kernel

renes2 said:
dafuq?
My Battery life is without doing nothing ~1-2weeks (in my with 58% xD)
Use Stock Kernel
Click to expand...
Click to collapse
Where can I find that to flash it?
Sent from my Nexus 7 using Tapatalk 2

Aliceics said:
Where can I find that to flash it?
Sent from my Nexus 7 using Tapatalk 2
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Click to collapse
Go to the motley kernel thread in Original Development. He provides a mirror link for the stock kernel
I loved Trinity and the TKT app but for some reason im getting much better battery life with motley kernel. I originally did some troubleshooting and fixed some apps that were causing wakelocks. My battery life got a little better but not by enough (could only get 3 or 4 hrs screen on) so i switched kernels.
If you feel like experimenting do this:
Nandroid
Wipe Cache + Dalvik
Wipe System
Factory Reset
Flash CM10 nightly (any rom of your choice)
Flash GApps
Flash motley kernel (i used the 484 GPU version)
Fix permissions
Reboot
I get awesome battery life now and performance is great.

Your title should be something like this: "After rooting and installing battery draining rom and kernel I get bad battery life on my N7"
Stock JB and kernel should yield decent batter life.
With the proper rom and kernel the Nexus 7 easily match or better the googles battery life claim.
FYI the latest Trinity kernel is a battery hog.

noobandriod said:
FYI the latest Trinity kernel is a battery hog.
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if you use it at 1.7ghz it will be, but thats obvious. at 1150mhz, its as quick and wonderful on batteries.

simms22 said:
if you use it at 1.7ghz it will be, but thats obvious. at 1150mhz, its as quick and wonderful on batteries.
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Click to collapse
I wouldnt go as far as saying its a battery hog, but i ran the kernel at stock clocks and while performance was much better than stock i still had tons of drain that i now dont have with a different kernel.

Ran Trinity kernel at 1150mhz and had awful battery. Back on stock ROM and kernel and seems to have improved a lot.
Sent from my Nexus 7 using xda app-developers app

I feel like the battery is pretty decent...
Get off those custom Roms and kernels until you understand how the device is meant to perform.

You appear to have 87% after 1.5 hours, that equals about 10 hours, how is that bad? I get about 8 hours if I am intensely playing with screens, apps and games, 2 days if I'm not doing much. Loses 2% at night with wifi off. No root.

trinity kernel and the pure aosp rom, at 1150mhz. id say not bad at all..

Trinity Kernel is a good kernel. I went overboard by saying it was a battery hog. I did have it overclocked up to 1500hz on-demand and it ate up battery faster then I would like. But this is with the newest one, a few of the older ones worked out better for me though.

noobandriod said:
Trinity Kernel is a good kernel. I went overboard by saying it was a battery hog. I did have it overclocked up to 1500hz on-demand and it ate up battery faster then I would like. But this is with the newest one, a few of the older ones worked out better for me though.
Click to expand...
Click to collapse
yea, overclocking is mostly for fun, definitely not for battery life

640k said:
Get off those custom Roms and kernels until you understand how the device is meant to perform.
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Click to collapse
I have some problems with *wakelock*

[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.

Friendly Battery kernel for Nexus 4?

Hello,
I have AOKP Custom Rom, is there a friendly batterij kernel for my Nexus 4?
Thankyou.
Kisses

YourTheBest said:
Hello,
I have AOKP Custom Rom, is there a friendly batterij kernel for my Nexus 4?
Thankyou.
Kisses
Click to expand...
Click to collapse
every kernel for someone will be the one that gives them the best battery life, and for someone else the absolute worst battery life. every device differs, and every device reacts differently to every kernel. you really have to try out all that you can, only then youll find the best battery kernel for your device.

simms22 said:
every kernel for someone will be the one that gives them the best battery life, and for someone else the absolute worst battery life. every device differs, and every device reacts differently to every kernel. you really have to try out all that you can, only then youll find the best battery kernel for your device.
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Thanks Simms22, because you so honest, I will try you're kernel.
Thanks Again!

YourTheBest said:
Thanks Simms22, because you so honest, I will try you're kernel.
Thanks Again!
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Click to collapse
truth be told kernels dont do much for battery life... or very little. Its apps that will cause battery life issues.
I have been fond of franco kernel, and undervolting 100mv across the board.

You could check this thread, personally I use NEO kernel and tune it to my liking using TricksterMOD.

YourTheBest said:
Hello,
I have AOKP Custom Rom, is there a friendly batterij kernel for my Nexus 4?
Thankyou.
Kisses
Click to expand...
Click to collapse
Hells-core, franco.Kernel.Plus, Matr1x and Semaphore have always been very battery-friendly with me. But I always go for performance because I am almost always near a charger. Hells-core has always been the best at performance and battery life.

it is your setup and apps where you can get or lose battery life, that is true. taking real control of your apps, and when they run, can intensively improve battery life. also your data/phone signal. i get much better battery since going to lte. data tranfers faster, so the radio is running much less. that itself added an hour of screen on time to my battery cycle.

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!
Click to expand...
Click to collapse
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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Click to collapse
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
Sent from my Nexus 4 using xda app-developers app

ROM with best battery life?

Coming from an LG G2 (long story), battery life is what I miss the most. The nexus 4 has about half the screen on time than my g2 did.
I'm already unlocked and rooted but still stock ROM. Are there any Roms that significantly improve battery life?

I found smart 3G on Cataclysm to be pretty good at saving battery.

ROMs and kernels have little to do with battery. Your usage, signal for mobile data and WiFi, screen brightness, your configuration for location services, gps and the like and your apps determine your battery life.

brian85 said:
Coming from an LG G2 (long story), battery life is what I miss the most. The nexus 4 has about half the screen on time than my g2 did.
I'm already unlocked and rooted but still stock ROM. Are there any Roms that significantly improve battery life?
Click to expand...
Click to collapse
I'd try Paranoid. I used it for a while after using stock and I found that the battery improved.

roms have absolutely zilch when it comes to battery life. only thing rims can do with battery is reduce it. generally, the more added mods/features a rom has, the worse the battery life. but not always. battery life is determined by hiw you personally use your phone, how you set it uo, what apps you use, and the quality of your phone/data connection. everything else, including kernels, have a very minimum effect on battery.

Well
When I was with Carbon, the play store thing killed my battery to 3hrs on screen time
Switched over to Purity Rom with Hells kernel and I have 5-6 on screen time
WiFi on all the time, no data or GPS or Bluetooth.
Mostly Reddit and a game or two, and a movie

Not the Rom but the Kernel is decisive

Nuhro said:
Not the Rom but the Kernel is decisive
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Click to collapse
Kernel doesn't make much of a difference either. See simms22 post above
Sent from my Nexus 5 using XDA Free mobile app

jd1639 said:
Kernel doesn't make much of a difference either. See simms22 post above
Sent from my Nexus 5 using XDA Free mobile app
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Click to collapse
Okay, but why is the battery life better with an another kernel?
I use the HeelsCreed kernel and Mahdi rom. My battery life is better with the HeelsCreed kernel as with the Kernel of the Mahdi rom.
P.S.: I know my english is bad, sorry for that

Nuhro said:
Okay, but why is the battery life better with an another kernel?
I use the HeelsCreed kernel and Mahdi rom. My battery life is better with the HeelsCreed kernel as with the Kernel of the Mahdi rom.
P.S.: I know my english is bad, sorry for that
Click to expand...
Click to collapse
set up your CPU and everything else just how the kernel sets it up for you, and you'll get the same battery life. be more active, set things up manually.

brian85 said:
Coming from an LG G2 (long story), battery life is what I miss the most. The nexus 4 has about half the screen on time than my g2 did.
I'm already unlocked and rooted but still stock ROM. Are there any Roms that significantly improve battery life?
Click to expand...
Click to collapse
can you tell the story please , anyway ROM has weee little to do with battery life , its mostly on how you use it and the kernel you are using as well as sync loops and dodgy leaky apps , my personal setup is rom = paranoid android and kernel = hellsdoctor , using synapse app i switched the maximum clock speed to 1.2 Ghz , and changed the maximum core online to two, gpu is overclocked by default , rest is, location settings are turned off only turned on when required , brightness is set to 50 % , no dodgy apps on the phone , i can squeeze about 5 and half hours sometimes 6 its good enough for this battery size though and hope it works out for you :good: