Database Info

Battery Life Thread with Display on Duration Times

I know there's already a battery life thread, but I thought it would be interesting to have one where people also included the amount of time their display was turned on for, since that seems to be the primary source of battery drain for me at least. Also if you wouldn't mind posting the average brightness it was set at, as well as any custom rom, kernel, or battery saving techniques you're using, that would be cool as well. And if you have a really long display on time, like over 5 hours, maybe you could include a screenshot fort verification too if it's not too much trouble. Thanks!
The most I've ever got is about 5 hours or so of display on time at around 25% brightness with sky ics 7.4, faux kernel 009m, -50 global uv, 1.5ghz CPU speed, and juice defender ultimate with 15 min sync interval. I can't find the screenshot for that one, but here's one that's almost as good:
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Stock rom
Faux 009m kerna
JD ultimate
2hrs display time 10% brightness
Don't know why I seem to get so little compared to some of you
Sent from my SAMSUNG-SGH-I727 using XDA

Copied from the other battery thread
These are my specs.
-QuickWiz Rom
-009m Faux kernel ( 1.242ghz max - 384mhz min / -75mV )
Undervolted using Fauxclock (Y)
-Froze bunch of bloatware using Titanium backup

SkyCoke ROM
Faux 009u Kernel
-100mV UV, 1.188 gHz max clock
No JuiceDefender or anything else extra besides whatever came with the ROM

[Q] Slow screen refresh kernel

I want to try a kernel compatible with CM9 on my i9020 with a slow refresh rate to test how many battery can be saved.
I see in bedalus kernel comparison that AniDroid Hardened is a 45fps one but seem a little out of date.
Any other kernel with 45-50fps refresh?

progitto said:
I want to try a kernel compatible with CM9 on my i9020 with a slow refresh rate to test how many battery can be saved.
I see in bedalus kernel comparison that AniDroid Hardened is a 45fps one but seem a little out of date.
Any other kernel with 45-50fps refresh?
Click to expand...
Click to collapse
That's funny. I was trying to get Anidroid 45fps to work with some of the new IMM76I ROMs this morning, but had no luck.
The best battery saving kernel is still matr1x, even with nominal voltages and 56fps.

I`ll take a test with the Matrix kernel.
Have you ever compared battery drain of two version of the same kernel with the only difference of display refresh?
I`m very curious to understand how much this parameter can be helpful in a battery saving setup

From bedalus battery drain thread
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56 fps eat ~43mv , 65fps eat ~47mv
Thread link : http://forum.xda-developers.com/showthread.php?t=1478406
Sent from my Nexus S using Tapatalk 2

Yes, as you can see in the post above, and i recently tested 56 and 50 hz versions of trinity.
It definitely affects power!

Yes, I've just readed it on the battery drain thread. I have definitely to try this.

Battery issues

So I'm running the 7/15 CM9 rom and today my battery is draining at an alarming rate. The highest percentage isn't even screen its phone? File attached. What is up with this? I've made one 2 minute call ALL day and sent about 20 text messages.
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Have you tried InstigatorX's kernel http://forum.xda-developers.com/showthread.php?t=1721235 I've heard that it gives great battery life.
I would ask this in the CM9 thread in the general section http://forum.xda-developers.com/showthread.php?t=1710289 if that doesn't help.

It could be wakelock issues, try to use BetterBatteryStats to monitor the phone's usage. It'll tell you which program or service is using battery. Could also try rebooting. When the phone doesn't go to deepsleep it stays on a specific frequency (CPU) and slowly drains battery. Programs can also cause draining if they're constantly syncing and using mid frequencies rather than low level frequency. Each frequency level (192MHz, 1GHz, 1.5GHz) has different voltages so if it stays at a specific frequency it can drain a lot. CPUSpy is also a simple program that monitors how much time the phone stays at a specific frequency. If your phone has been on for 8hours and 7hours is on deepsleep then there is no wake issues. If it says 8hours and 5minutes is on deep sleep but 384MHz (or any) and you don't have any programs on then you have wake issues or a service is constantly using your resources.

Here's some tips for balance of speed and battery life! (Works very well)

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First of all, download an app called "Setxperia" , go to your cpu settings and set your governor to ondemand, and threshold to 40 (This gives responsiveness and speed comparable to higher end phones such as my galaxy s2). Second, download an app called "Deep sleep battery saver" , set the preset on any you want (I recommend strong) , set your screen on and off delay to 5 seconds. For battery discharge settings, set it to 10% , for recharge settings, press ignore. (Doing this compensates for power the low threshold uses) and there you go, done! Tested on my galaxy s2 first then sidekick 4g, methods work for both devices.
Sent from my SGH-T839 using Tapatalk 2

i just flashed a new rom and overall experience is the great
But...battery life is not that good now
going to try this today and iw ill inform you with the results

auda said:
i just flashed a new rom and overall experience is the great
But...battery life is not that good now
going to try this today and iw ill inform you with the results
Click to expand...
Click to collapse
Alright hope it works well for you
Sent from my SAMSUNG-SGH-T989 using Tapatalk 2

I only ever see a battery issue when I use wifi. But I might as well try this out.

Custom kernels

Anybody knows any custom kernel for lollipop 5.0.2 single sim? Recently been playing around with the cpu governor and i/o scheduler and i want to try out other new and tweaked governors which seems to improve the performance and stability. Just a side note, i got about 4hrs on screen time with wifi for my phone so is this good?

i hope someone develop a new kernel for the one E8
about battery life i get about 5:30 ~ 6:20 screen on time on wifi
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Eiad Ajam said:
i hope someone develop a new kernel for the one E8
about battery life i get about 5:30 ~ 6:20 screen on time on wifi
Click to expand...
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Are you rooted? Did you tweaked your phone? Do you let the battery saver to limit the cpu to lower frequency to get more battery life? I find that having to limit the cpu makes the phone laggy when multitasking.

JuzARandomGuy said:
Are you rooted? Did you tweaked your phone? Do you let the battery saver to limit the cpu to lower frequency to get more battery life? I find that having to limit the cpu makes the phone laggy when multitasking.
Click to expand...
Click to collapse
Yes i'm rooted but using stock rom
Power saver only works @ 14% battery
I'm just using greenify to hibernate unwanted apps
Sent from my HTC One_E8 using XDA Free mobile app