Database Develop

Backlight levels & battery

I was just wandering what level most of you set your backlight to and how it affects battery life. Also, do you have auto-backlight set to 'on'?
Just trying to find a good balance between brightness and battery and so thought your experience would really help.
Thanks,
S.

Set to Auto here. No problems with battery life so haven't tried adjusting manually. I personally like the way it manages the back-light depending on ambient light

[Q] battery optimized ROM

I have seen pretty many ROMs here, but am unable to make out which ROM is best optimized keeping battery life in mind. Could anyone please help suggest me a ROM or two that give the most of the battery life. Please.

You could take any ROM that will work with a kernel supporting OC/UV (like Setiron's) and use Xan's voltage app to limit the top speed of the CPU to something less than stock (1ghz is stock, your choices would be 800, 400, 200, 100)
Then apply an undervolt as low as you can go while still being stable.
This will of course result in a slower device, but that's the tradeoff. Less speed for more battery life.
Do note that the screen is the largest user of power by far and thus you can make the most difference by keeping the backlight as low as tolerable and shut it off whenever you aren't actively using it.

Da_G said:
You could take any ROM that will work with a kernel supporting OC/UV (like Setiron's) and use Xan's voltage app to limit the top speed of the CPU to something less than stock (1ghz is stock, your choices would be 800, 400, 200, 100)
Then apply an undervolt as low as you can go while still being stable.
This will of course result in a slower device, but that's the tradeoff. Less speed for more battery life.
Do note that the screen is the largest user of power by far and thus you can make the most difference by keeping the backlight as low as tolerable and shut it off whenever you aren't actively using it.
Click to expand...
Click to collapse
Thanks Da_G. I did use SetCPU, and set the speed to 800, but for some reason it is giving me lower battery life compared to without SetCPU. So took it out.
Also, I have my screen brightness turned all the way down with auto set to off.
I meant to ask for a ROM that has all the battery hogging stuff in it removed/optimized.
I am currently like 45% left after about 8 hours with moderate usage. Trying to see if I can stretch more than this.
My today's usage statistics:
1. 11 hours 25 min 4 secs since unplugged
2. Battery remaining: 63%
3. Voice calls: 1h 10m 15s
4. Display: 1h 15m 42s
5. 2 gmail accounts with push turned on with about 10 mails delivered today
6. google voice with push all time with about 100-120 messages delivered using push
a. I do not have SetCPU.
b. I have my brightness set to 0, with auto-brightness turned off.
c. I used SamServMode to turn on EDGE, and 3G turned off since the phone was off charging hook. In short, on EDGE all the time.
d. Static but nice, colored wall paper.
Could anyone suggest me if this is good enough. And any ROM that could get me battery atleast on par with what I am getting.

A few of my ideas:
1. Use a dark colored theme. Our nice SUPER AMOLED screens don't use up much power to draw black - so the more black - the merrier.
2. Be careful of what extra apps running. Things like widget locker are one more app to run. Go slender. Theme's are okay if they replace files like frameworkres.apk but if they run in background (see it under processes) then that's bad.
3. Be extra careful of making sure you are fully charged when you flash. This means, charge, turn off, charge, turn on, charge, flash. I get a little more charge when I go back to eclair stock .
also note that 95% of battery is the screen
Everything else that was said before me was spot on so try that too.

fatttire said:
A few of my ideas:
1. Use a dark colored theme. Our nice SUPER AMOLED screens don't use up much power to draw black - so the more black - the merrier.
2. Be careful of what extra apps running. Things like widget locker are one more app to run. Go slender. Theme's are okay if they replace files like frameworkres.apk but if they run in background (see it under processes) then that's bad.
3. Be extra careful of making sure you are fully charged when you flash. This means, charge, turn off, charge, turn on, charge, flash. I get a little more charge when I go back to eclair stock .
also note that 95% of battery is the screen
Everything else that was said before me was spot on so try that too.
Click to expand...
Click to collapse
Thank you kind sir. I shall do this. But I am not flashing anymore.
I loaded the AOSP ROM from Spaceman here
Code:
http://forum.xda-developers.com/showthread.php?t=827153&page=36
and am getting pretty much the battery backup I was getting with stock.
Thanks a bunch everyone who helped me on this.

[Q] Which kernel/kernel settings for better battery life?

Hey all. I'm running Chroma 7/1 on Zen 21 right now, and I can't say I like the battery life I'm getting. What kernel have you found gives the best battery life? Or what settings? Other suggestions? Lemme know. Thanks!

It's hit and miss. We don't know what else you are running as far as apps and settings go, so it's basically trial and error until you find What's best for you.

right, it all depends how you use the phone.
me, im a heavy user, lots of browser action. but i dont do much gaming. i like performance, but i get great battery life as well(about 5-6.5 hours sot). i strictly use ondemand/deadline, no hotplugging, fsync off. also, i like despair, vindicator, and elementalx kernels, but thats just me
oh, signal quality plays a huge role in battery life as well. so does screen brightness, keep your screen brightness down. i keep mine from 15%-0$.

I use elementalx. It doesn't have better battery life than any other kernel - they are all the same. It's all about tweaks..
Setting the up threshold higher for example, will change the % of load the cpu must be under before it ramps up to the next frequency or even to turn additional cores online.

Thanks. I guess it's trial and error then.

I've been using aicp and stock elemental x with good results.

YevOmega said:
Hey all. I'm running Chroma 7/1 on Zen 21 right now, and I can't say I like the battery life I'm getting. What kernel have you found gives the best battery life? Or what settings? Other suggestions? Lemme know. Thanks!
Click to expand...
Click to collapse
What improved the battery life of my N6:
Franco's kernel (default setting);
No wallpaper app;
Pixel battery saver;
Replaced apps with white background by alternative apps with a black background.
Installed/flashed apps modded by the Team Blackout
Disabled not used g-apps.
Disabled not used services

100% Brightness

Does anyone use this phone on full brightness and if so what is the battery life like? just curious because i'm thinking about using it on 100%
Thanks

Dude I'm sure using it at 100% brightness will kill your retina before it kills your battery.
Seriously though, I think they made some changes to the brightness setting in one of the more recent firmwares, because it shines with the intensity of a thousand suns now at 100%, compared to what I remember it's like originally. I used to set it at 50% brightness, now it's at 25% or so but with the same perceived luminosity level (non-scientific of course).
Do you really need it at 100% constantly?

Best kernel and configuration for battery saving?(Pie)

Hello, I would like to ask which is the best kernel and configuration (governor,io scheduler, etc) for battery saving? Also I need the kernel to be Pie compatible and I would prefer if it supported DT2W. Thank you very much

I use Dark Phoenix Fade kernel by Harukey. I use default setting/config. and it has pretty good battery life. I can reach +/- 24 hours for normal use (LTE data on, casual browsing, see 1 hour film).
Dark Phoenix Fade has DT2W also and yes, it supports Pie.