Database Users

Bad Battery Life

I'm getting bad battery using my phone. Can you guys recommend SetCPU profiles or settings, or do I need a new battery? Thanks!
Sent from my FroyoEris using XDA App

In case you've set a min/max something like 19 (min) to 768 (max), try setting the min quite a bit higher, like in the 200-400 range. See if that helps. Also, don't go crazy setting a whole bunch of profiles. In fact, for troubleshooting, don't use any so you can narrow things down.

245 245 works really well and doesn't make the phone take forever waking up
Sent from my FroyoEris using XDA App

My setup settings are:
Main-806max, 604min
Screen Off-480max, 19min
Battery 50%-768max, 480min
All set to on-demand
Sent from my FroyoEris using XDA App

TheSonicEmerald said:
My setup settings are:
Main-806max, 604min
Screen Off-480max, 19min
Click to expand...
Click to collapse
Not specific to this topic, but I suspect you really see much difference between 806 and 604...
For your screen-off profile, change the min to something like 245. Just try it for a day or two and see what happens.

I too have poor battery life. We're talking down a percent every 2 minutes. I'm running the Droid does rom. I'm gonna try your settings and see how that works.
Sent from my Eris using XDA App

My battery drains fast too. I stopped using setcpu. When I'm not using the internet I turn it off. Now my battery last a lot longer.
Sent from my ERIS using XDA App

hallstevenson said:
Not specific to this topic, but I suspect you really see much difference between 806 and 604...
For your screen-off profile, change the min to something like 245. Just try it for a day or two and see what happens.
Click to expand...
Click to collapse
im at 710/844 2**/4** with half decent battery life. but i do stil walk around with a charger
getting linpacks of 5.783 @ 844mhz!

Well a lot of you have seen my posts on this subject but the op asked so...
I have no setcpu installed, no autokiller. The Froyo ROMs are default set to 710mhz and I enable JIT as it helps battery life. You also NEED to calibrate correctly to see best battery life.
CGriffiths86 summed up my long winded version of battery calibration like this...
1. Fully charge the phone
2. Shutdown, boot into recovery, and Wipe battery stats
3. Reboot from recovery and use the phone as normal until it completely dies
4. Fully recharge the phone
With battery cal, no setcpu, and no autokiller, I get 27-30hrs on a full charge with solid use all day including bt music playback, navigation, calls, texting, and minimal web access.
The other settings I use are.
VMheap 24
Screen at 35% brightness

N2...
What about the other 2 settings with JIT? Do you have them checked or unchecked? Comcache? and Dithering?

eghill1125 said:
N2...
What about the other 2 settings with JIT? Do you have them checked or unchecked? Comcache? and Dithering?
Click to expand...
Click to collapse
I dont use compcache (although I have read that it works well with FROYO based ROMS), and I dont enable surface dithering (doesnt add that much crispness to the display to me and takes away from processing power). I dont believe either of these settings will have much impact on battery life though so try them out and if things are still as snappy as you want then MPTY.

oh yeah try turning off auto sync it helps me a bit

Using CELB 2.8, I get about 24-30 hours of battery life with a fair amount of usage.
http://www.techradar.com/news/phone...android-battery-life-should-last-a-day-690439 when Page made this comment, I was at the time convinced that my phone itself was to blame and quite incredulous with regard to his statement. Turned out...he's right, at least in my case. I'd say stop looking at OS settings and focus on the apps you have installed.
I was having absolutely terrible battery life, even with this rom (though at version 2.5 or so), and couldn't figure it out for the longest time. The culprit turned out to be NewsRob, an RSS reader that syncs with Google Reader. I had it initially set up to sync every 4 hours or so, but the default is 1. Somehow, thanks to Apps2SD, when I flashed a new ROM, the sync settings reverted back to the defaults. I finally figured this out and changed my settings to manual sync and battery life has been epic ever since.
Another app that I think was causing some drain was Locale, as it's constantly polling your phone for data about its condition. I stopped using it altogether and am just out the 6 bucks, I guess.
And another thing that helped was completely removing AutoKiller from my phone.
Some more info on SetCPU settings: http://forum.xda-developers.com/showthread.php?p=6901762#post6901762
And this guy's very helpful post on general settings: http://forum.xda-developers.com/showthread.php?p=6957276#post6957276
Last thing, there's an app called JuicePlotter in the market which is really good at helping see trends in your battery drain. It's free.

lostsync said:
Using CELB 2.8, I get about 24-30 hours of battery life with a fair amount of usage.
http://www.techradar.com/news/phone...android-battery-life-should-last-a-day-690439 when Page made this comment, I was at the time convinced that my phone itself was to blame and quite incredulous with regard to his statement. Turned out...he's right, at least in my case. I'd say stop looking at OS settings and focus on the apps you have installed.
I was having absolutely terrible battery life, even with this rom (though at version 2.5 or so), and couldn't figure it out for the longest time. The culprit turned out to be NewsRob, an RSS reader that syncs with Google Reader. I had it initially set up to sync every 4 hours or so, but the default is 1. Somehow, thanks to Apps2SD, when I flashed a new ROM, the sync settings reverted back to the defaults. I finally figured this out and changed my settings to manual sync and battery life has been epic ever since.
Another app that I think was causing some drain was Locale, as it's constantly polling your phone for data about its condition. I stopped using it altogether and am just out the 6 bucks, I guess.
And another thing that helped was completely removing AutoKiller from my phone.
Some more info on SetCPU settings: http://forum.xda-developers.com/showthread.php?p=6901762#post6901762
And this guy's very helpful post on general settings: http://forum.xda-developers.com/showthread.php?p=6957276#post6957276
Last thing, there's an app called JuicePlotter in the market which is really good at helping see trends in your battery drain. It's free.
Click to expand...
Click to collapse
This is gotta help a lot, thanks! And thanks to the other guys for quick replies!

With a full battery in the morning, o usually have about 20% left about now which is 10:53pm EST. I charged all night last night, wiped battery stats this morning as soon as I took it off the charger, and I have 52% right now! And I have used it more than I usually do. I don't know why that seems to have worked but I hope it does the same tomorrow.
Oh yeah, Setcpu set to 710 max, 245 min, screen set to manual brightness at 45%
Sent from my Eris using XDA App

Go on ebay and search for HTC Eris batteries. For $15-20 you can buy 2 extra batteries with an EXTERNAL charger. I run my batteries to 15% or less, pop it out, put in a fresh (cool) battery, and put the dead one on the charger. No more carrying a charger everywhere I go or using a landline because my cell is about to die. Then your settings don't really matter. Even if you can use 3 batteries in a day, you'll have a fresh one (or 2) charged by the time you burn up the 3rd one.
Sent from my FroyoEris using XDA App

Battery

I was wondering how I could extend that battery life on my DINC? Any suggestions and tips would be great.

Ah yes, the battery issue. One I am all too familiar with.
Easy:
For whatever reason our phones charge to 90% and stop there. To correct this, you can either charge while the phone is off or do what we call a bump charge. Bump charging involves charging the phone to "full" while its on (the light should be green) and then turning it off while still plugged in. The light will then change to orange again for 30+ minutes and then green again. You will then Really be fully charged.
Also make sure you have GPS and Bluetooth off when you aren't using them. This will help a ton.
There is an option in Settings - Wireless & networks - mobile networks - called "enable always on mobile data". Unchecking this will drastically help save while the phone is asleep on the 3g network. However, doing this will affect how often you receive updates to chats and sync items when the phone is sleeping. To me it isn't a big deal since if I'm not using the phone why should it be working, but everyone is different!
Finally, a rogue app might be nomming away at your battery. An app from the market called System Panel will monitor how much battery each app is eating. Its free initially but if you want it to monitor over time in the background it does cost. However it is definitely worth it since its a great app and useful for any android owner.
Intermediate (has cost):
Evo batteries fit in our phones! The fit is a little tight but it works just fine. Our stock batteries have 1300mah of capacity which is a bit on the low side. The evo battery has 1500, so it's an hour or so better. You can buy them cheap off ebay (OEM Evo Battery) for around $15.
Conversely, there is the official extended capacity battery for our incredibles with a massive 2150mah. The trade off is that it adds bulk to your phone and costs a lot (around $50). There is the third party seidio battery which adds even more capacity (3500) but adds even more bulk.
Advanced:
Are you rooted? There are kernels out there that are undervolted like Hydra kernel, adrynalyne's undervolted and kingklick's voltage scaling kernel. Everyone has differing experiences with them so there's not a solid "best" so to speak. You can flash these kernels using the clockworkmod recovery. This will all be nonsensical if you're not into the Modding scene.
Also if rooted, you can underclock the processor which, depending on the kernel, can help drastically save battery. You can set profiles to have the cpu work at a minimum speed while the screen is off. Kingklick doesn't advise using setcpu with his kernels and it straight up wont work with hydra's, but it can do wonders on any others.
--
Depending on your activity, you should expect 4-5 hours of 3g awake usage and around 5-6 if you're mostly on wifi using the stock battery. 3g can be a battery drain if you're in an are with inadequate service.
Hope this helps!
Sent from my Droid Incredible using the XDA app.

turning off gps doesn't matter all that much. GPS isn't called upon unless you have an app using it. I have mine on most of the day (for tasker profiles) and have no issue.
Use WiFi when available, its quicker than 3g and takes less battery.
download setCPU (from xda) and make a profile for screen off max/min = 400/245 or something like that.
i have 'always on data' checked, no issues for me
kernels help a ton, kk#5 is a beast.
I'm running uncommon sense, kk#5 and the above settings. I'm on 20 hours unplugged with 35% less, standard usage. -- not bump charged, charged while on to 100%

isn't the system panel app like a task killer? and from what i've read task killers are pretty pointless with froyo......however i have noticed that my phone is constantly running with about 140mb of ram free, i don't know if this is usual or if something is wrong?? i just got my Dinc so i'm new to all the tweeks and tricks, i do have mine rooted though. i'm not that up on changing roms and kernals though so i'm just trying to find out what all i can do to help my battery without having to buy a bigger one. any help would be greatly appreciated!!

If you are rooted and aren't comfortable with flashing ROMs and kernels, look at setcpu that was mentioned before, and search for instructions to remove the stock apps that always startup on their own in the background. Unless you actually use them, then you can't really do that obviously. I don't have any times on how long it lasted before and how long it last now but I do know its improved. I have mine at a processor clock speed of 500mhz and I don't see much lag time unless I'm really running a lot of things. I'm on WiFi listening to Pandora and I'm not experiencing keyboard lag while typing this.
Sent from my Incredible with XDA App

is there any risk to my phone from running setcpu ? i JUST got it and really don't want to break it already!! hahaha

trembly01 said:
is there any risk to my phone from running setcpu ? i JUST got it and really don't want to break it already!! hahaha
Click to expand...
Click to collapse
no...the max it'll run is 1.19 ghz. worst that will happen is a bootloop which can be fixed through nandroid.
Just increment a little at a time. I usually run mine at 1.075 ghz w/ on demand.
screen off profile max/min - 450/245

I use JuiceDefender on my Incredible and believe it or not it really works. It's turns off your data while the phone is on sleep mode so no battery is being drained. I get at least 5 hours extra battery life. You also get other features that come along with it so just give it a try It's free!
Sent from my ADR6300 using XDA App

trembly01 said:
isn't the system panel app like a task killer? and from what i've read task killers are pretty pointless with froyo......however i have noticed that my phone is constantly running with about 140mb of ram free, i don't know if this is usual or if something is wrong?? i just got my Dinc so i'm new to all the tweeks and tricks, i do have mine rooted though. i'm not that up on changing roms and kernals though so i'm just trying to find out what all i can do to help my battery without having to buy a bigger one. any help would be greatly appreciated!!
Click to expand...
Click to collapse
Yes system panel CAN be a task killer but I do not suggest using it as such. Instead, it does a great job monitoring how much CPU each app uses so you can take educated action.
MMBosstones86 said:
turning off gps doesn't matter all that much. GPS isn't called upon unless you have an app using it. I have mine on most of the day (for tasker profiles) and have no issue.
Use WiFi when available, its quicker than 3g and takes less battery.
download setCPU (from xda) and make a profile for screen off max/min = 400/245 or something like that.
i have 'always on data' checked, no issues for me
kernels help a ton, kk#5 is a beast.
I'm running uncommon sense, kk#5 and the above settings. I'm on 20 hours unplugged with 35% less, standard usage. -- not bump charged, charged while on to 100%
Click to expand...
Click to collapse
1. If you use location based services and have GPS on, it will use the GPS module quite a bit. This is certainly a battery drain.
2. If you dont have any issues with always on mobile data then you must be in an area with good coverage. For me if its left on it drains my battery quite a bit because I'm in a flaky coverage area.
Everyone's phone is different though. Finding what works and what doesn't is the first step to perfection. I just installed the new skyraider sense and my battery life has been ultra fantastic. It works great for me, but I know others dont have that success.
Sent from my Droid Incredible using the XDA app.
Sent from my Droid Incredible using the XDA app.

How to get epic battery life?

Hey guys,
I see some people here have AMAZING battery life. Some people are getting 4+ hours screen on time with a single charge.
I only get around 2 - 2.5 hours screen on time. Which is good, but not as good as other people.
I am using the latest Paranoid Android ROM, and I have tried many different kernels but battery life is the same with all of them. I tried undervolting, still the same battery life.
All location/gps settings are OFF. The only syncing I have is Facebook syncing every 4 hours. I checked the battery stats, and everything is normal. I checked Better Battery Stats and everything is normal too, no unusual wakelocks or anything like that.
I checked my cpu bin in terminal, and it has been binned as a 'FASTER' cpu.
I have very good signal all the time. Always use WiFi, never mobile data. Bluetooth, NFC are OFF, and brightness is autobrightness.
So after all this, why am I not getting amazing battery life like others?
Thank you!

harro3 said:
Hey guys,
I see some people here have AMAZING battery life. Some people are getting 4+ hours screen on time with a single charge.
I only get around 2 - 2.5 hours screen on time. Which is good, but not as good as other people.
I am using the latest Paranoid Android ROM, and I have tried many different kernels but battery life is the same with all of them. I tried undervolting, still the same battery life.
All location/gps settings are OFF. The only syncing I have is Facebook syncing every 4 hours. I checked the battery stats, and everything is normal. I checked Better Battery Stats and everything is normal too, no unusual wakelocks or anything like that.
I checked my cpu bin in terminal, and it has been binned as a 'FASTER' cpu.
I have very good signal all the time. Always use WiFi, never mobile data. Bluetooth, NFC are OFF, and brightness is autobrightness.
So after all this, why am I not getting amazing battery life like others?
Thank you!
Click to expand...
Click to collapse
Because you use the phone and the others no! I have similar battery life. I get 3 hours screen on time.
Try cyanogenmod. For me is the best rom.

Heres a few things that help me:
make sure if your on a ROM that has it to disable cell broadcasts in wireless & network settings.
In Google sync settings, uncheck everything you don't use or can manually sync. The only things I leave checked are gmail, contacts & calendar.
If you've opened maps, make sure to back all the way out of it & swipe it away from your recent tasks screen. Better yet, if you don't need it, uninstall it or use an alternative like mapquest app.
If you don't use Google talk, open it and sign out or uninstall it.
Try not to overdo it with widgets on your home screens. I mean a few is cool, but when u have 5 screens all jam packed with various widgets constantly running & syncing...
I know you said you've tried various kernels, but I honestly found that I got the best screen on time with Franco r86 kernel (just over 4hrs). I'm not a huge kernel fan so I haven't really tried others, but I was only getting just over 3 hrs on stock.
Sent from my Nexus 4 using xda app-developers app

harro3 said:
Hey guys,
I see some people here have AMAZING battery life. Some people are getting 4+ hours screen on time with a single charge.
I only get around 2 - 2.5 hours screen on time. Which is good, but not as good as other people.
I am using the latest Paranoid Android ROM, and I have tried many different kernels but battery life is the same with all of them. I tried undervolting, still the same battery life.
All location/gps settings are OFF. The only syncing I have is Facebook syncing every 4 hours. I checked the battery stats, and everything is normal. I checked Better Battery Stats and everything is normal too, no unusual wakelocks or anything like that.
I checked my cpu bin in terminal, and it has been binned as a 'FASTER' cpu.
I have very good signal all the time. Always use WiFi, never mobile data. Bluetooth, NFC are OFF, and brightness is autobrightness.
So after all this, why am I not getting amazing battery life like others?
Thank you!
Click to expand...
Click to collapse
I use the greenify app to hibernate facebook and words with friends it helps somewhat on battery life

I recently discovered that if I reduce the brightness down to 50% (which is still very BRIGHT), I can get an extra 30% battery life.
Simple, and yet, effective

Turn the brightness down - even 10pct is plenty bright indoors.
Sent from my Nexus 4 using xda app-developers app

Flash matrix kernel
Sent from my 3rd Nexus 4 using Tapatalk 2

lowrider262 said:
Heres a few things that help me:
make sure if your on a ROM that has it to disable cell broadcasts in wireless & network settings.
In Google sync settings, uncheck everything you don't use or can manually sync. The only things I leave checked are gmail, contacts & calendar.
If you've opened maps, make sure to back all the way out of it & swipe it away from your recent tasks screen. Better yet, if you don't need it, uninstall it or use an alternative like mapquest app.
If you don't use Google talk, open it and sign out or uninstall it.
Try not to overdo it with widgets on your home screens. I mean a few is cool, but when u have 5 screens all jam packed with various widgets constantly running & syncing...
I know you said you've tried various kernels, but I honestly found that I got the best screen on time with Franco r86 kernel (just over 4hrs). I'm not a huge kernel fan so I haven't really tried others, but I was only getting just over 3 hrs on stock.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Thanks, I have now signed out of google talk. I only have one widget at the moment and that's the clock widget. It's annoying that everyone can get 3 or 4 hours screen on time and I only get 2

harro3 said:
Hey guys,
I see some people here have AMAZING battery life. Some people are getting 4+ hours screen on time with a single charge.
I only get around 2 - 2.5 hours screen on time. Which is good, but not as good as other people.
I am using the latest Paranoid Android ROM, and I have tried many different kernels but battery life is the same with all of them. I tried undervolting, still the same battery life.
All location/gps settings are OFF. The only syncing I have is Facebook syncing every 4 hours. I checked the battery stats, and everything is normal. I checked Better Battery Stats and everything is normal too, no unusual wakelocks or anything like that.
I checked my cpu bin in terminal, and it has been binned as a 'FASTER' cpu.
I have very good signal all the time. Always use WiFi, never mobile data. Bluetooth, NFC are OFF, and brightness is autobrightness.
So after all this, why am I not getting amazing battery life like others?
Thank you!
Click to expand...
Click to collapse
Try Eugene's CPU Sleeper from the market. It turns off all but one of your cores while the screen is off to minimize cpu usage. On CM nightly with stock kernel I got 34 hours with 17% remaining and 2.5 hours screen on time til I ended up charging my phone. I run my CPU at 1350 max / 384 min.
Make sure under sound settings all the sound on touch, keypad, etc are all turned off. Each time your phone ticks a sound it uses battery. Also bright display backgrounds will use more battery.
I only sync chrome, calendar and instant upload
good luck

harro3 said:
Hey guys,
I see some people here have AMAZING battery life. Some people are getting 4+ hours screen on time with a single charge.
I only get around 2 - 2.5 hours screen on time. Which is good, but not as good as other people.
I am using the latest Paranoid Android ROM, and I have tried many different kernels but battery life is the same with all of them. I tried undervolting, still the same battery life.
All location/gps settings are OFF. The only syncing I have is Facebook syncing every 4 hours. I checked the battery stats, and everything is normal. I checked Better Battery Stats and everything is normal too, no unusual wakelocks or anything like that.
I checked my cpu bin in terminal, and it has been binned as a 'FASTER' cpu.
I have very good signal all the time. Always use WiFi, never mobile data. Bluetooth, NFC are OFF, and brightness is autobrightness.
So after all this, why am I not getting amazing battery life like others?
Thank you!
Click to expand...
Click to collapse
Clock down your device
Use conservative cpu governor or something like that,
Undervolt if necessary
Have a low brightness screen if it's possible
Sent from my Nexus 4

Flash Franco's kernel.
http://forum.xda-developers.com/showthread.php?t=2002782
Sent from my Nexus 4 using xda premium

You can also try this, it takes a few days to "learn" your routine then it supposedly starts saving battery. I'm currently in day 2 of learning mode so I don't know for sure how well it works. But it seems to be getting good reviews so far...
https://play.google.com/store/apps/details?id=com.xiam.snapdragon.app
Sent from my Nexus 4 using xda app-developers app

lowrider262 said:
You can also try this, it takes a few days to "learn" your routine then it supposedly starts saving battery. I'm currently in day 2 of learning mode so I don't know for sure how well it works. But it seems to be getting good reviews so far...
https://play.google.com/store/apps/details?id=com.xiam.snapdragon.app
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
I've read the the battery guru app does nothing for your phone whatsoever...

mrjoeltan said:
I've read the the battery guru app does nothing for your phone whatsoever...
Click to expand...
Click to collapse
It just turns radios off and shuts down syncing, nothing you can't do by yourself.
Sent from my Nexus 4 using xda app-developers app

mrjoeltan said:
I've read the the battery guru app does nothing for your phone whatsoever...
Click to expand...
Click to collapse
Well it basically learns your routines and changes your sync settings, turns WiFi on/off when needed, and various other things you could do yourself but might forget. Kinda like tasker for lazy people so in theory yes it could save you some battery.
Sent from my Nexus 4 using xda app-developers app

VoiD_Dweller said:
Try Eugene's CPU Sleeper from the market. It turns off all but one of your cores while the screen is off to minimize cpu usage. On CM nightly with stock kernel I got 34 hours with 17% remaining and 2.5 hours screen on time til I ended up charging my phone. I run my CPU at 1350 max / 384 min.
Make sure under sound settings all the sound on touch, keypad, etc are all turned off. Each time your phone ticks a sound it uses battery. Also bright display backgrounds will use more battery.
I only sync chrome, calendar and instant upload
good luck
Click to expand...
Click to collapse
All those sounds are already off, that's the first thing I do
Thanks for that app, I'll try it to see if it helps.
curtzxion said:
Clock down your device
Use conservative cpu governor or something like that,
Undervolt if necessary
Have a low brightness screen if it's possible
Sent from my Nexus 4
Click to expand...
Click to collapse
I undervolted the hell out of my phone, at one time it was a -150mv undervolt.
Brightness was on auto, I've now switched to controlling it manually to see if that helps
gravitysandwich said:
Flash Franco's kernel.
http://forum.xda-developers.com/showthread.php?t=2002782
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Tried his kernel already a few weeks ago. No real change in battery.

That seems weird
I am completely stock, and set things more or less the same with you (not syncing, no gps unless needed, on wifi all the time) and I could get over 4 hours screen on time on an 18 hours battery life. I believe this phone (chipset?) is really efficient on standby. Does your phone show that it's being kept awake much using the cpu spy app?

Same here... I'm on stock and the best i got was pretty impressive i think. 49 hours with 4 hours screen on time. I waited till the phone turned off by itself Even though i don't get that with heavier use, it's still enough to take me through a whole day which is better then my old phone
My battery saving tips:
-turn off everything you're not using (wi-fi when not at home or office/school, bluetooth, gps, low brightness indoors)
-swype away apps after you exit from them
-turn off the screen when you put it down/in your pocket etc.
-turn off google now
That is everything that i do. No sync disabling, undervolting, underclocking or other tricks

Install greenify app from playstore
Sent from my Nexus 4 using XDA Premium HD app

drbrainsol said:
My battery saving tips:
-swype away apps after you exit from them
Click to expand...
Click to collapse
That doesn't do anything. Android as a native app killer. On the other side, this would lead to more battery consumption as Android would have to initalize data the next time you open that app. IMHO leave the apps as they are, Android would take care of them and kill them when required.
lowrider262 said:
Kinda like tasker for lazy people so in theory yes it could save you some battery.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
IMO it's isn't as powerful as tasker, but it's giving some extra juice.

Poor battery life

http://i.imgur.com/HuW8tQu.png
I hardly used my device at all and in three days the battery had been reduced down to this.
I'm running stock and I'm using mkernel. What's the operating system doing when my device is idle to consume all that battery life?

Most likely location based services such as Google Now.
Sent from my Galaxy Nexus using Tapatalk 2

Battery life looks pretty good to me. Idle is not off. If you want better battery life, turn the nexus off when not in use.
Sent from my Nexus 7 using xda app-developers app

Would installing set cpu benefit me even though I run m kernel?

Macmee said:
Would installing set cpu benefit me even though I run m kernel?
Click to expand...
Click to collapse
No, and it's not recommended for this kernel. You probably have some application using the CPU. And keep in mind, that's over 3.5 days, so it's not too be worried about.
Sent from my SGH-I777 using xda premium

Not really sure what you are looking for.
Your tablet is configured differently (read: installed apps & their settings, never mind ROM & kernel differences) than the next person's, and those configuration changes alter the activity on the device and therefore the amount of power it consumes vs time. If what you observe is unacceptable to you, you need to drill down into the details to try and optimize things. But it really is impossible for anybody to guess (from a completely blind position on the other side of the internet) what might be the cause; if that is indeed anomalous consumption compared to some benchmark (pure stock, no market apps installed & a dormant gmail account?), the cause could be due to an unlimited number of different causes.
Perhaps you want to use that app BetterBatteryStats ($2.89) to find out about wake lock usage.
FWIW, my rooted stock 4.2.2 N7 grouper tab seems to discharge about 4% "overnight". Call that 10 hrs or so, so maybe I should expect 10% discharge per day while idle and unplugged. Your result seems to suggest 16%/day; but I've made no effort to dig in to things on my end of things - and besides: my results are irrelevant to yours as I no doubt use a different collection of apps than you and possibly different settings for the stock apps, too.
In my case the idle drain rate isn't a very compelling use case - I use the tablet every day, and when it is idle it is plugged into its' charger. If it should happen that it sat idle for a couple days, it's gonna be at 100% when I decide to use it.

Sv: Poor battery life
Macmee said:
http://i.imgur.com/HuW8tQu.png
I hardly used my device at all and in three days the battery had been reduced down to this.
I'm running stock and I'm using mkernel. What's the operating system doing when my device is idle to consume all that battery life?
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Click to collapse
And the problem is?
Around 6 days of standby, and you want to improve that?
If you want to improve that, turn off your tablet. I'm sure u can spare those 60 sec two times a day you turn on your tablet to check mail.

Keep WiFi off when not in use and you should see a great improvement. I use stock kernel and over that same time period my battery is about the same with about 3 hours screen on time. I only turn WiFi on when I'm actually using it as anything I need synced goes to my phone.
Sent from my Nexus 7 using xda premium

Try better battery stats and see what keeps your cpu from going to sleep state..With this way you can examine what drains your battery my friend.,.

Try turning off auto-sync. (Data usage settings)
Never keep wifi on when sleep (you will lose notification to chat programs, social network app notifications when sleeping)
Use wifi powersafe mode.(Wifi advance settings)
Turn off/disable unneeded background update/apps/extensions/services and flash a rom with minimal google stock apps)
Of course, check for apps that are currently consuming power if any. (App settings, internal application setting)
M kernel also defaults cpu max to 1500Mhz ; stock is 1200. M kernel also sets gpu to 446Mhz ; stock 416Mhz. Altho this numbers might seem minimal, it can affect your battery life considerably shall there be background processing or even right after you start using your device again despite minimally in your case. (Use n download trickstermod)
These might or might not help you in getting more standby time, try and experiment =>
If you are also looking for more screen on time and if you know and accept the risks, you can try undervolting the cpu, gpu and ram in trickstermod, you can also use rootdim to go lower the screen backlight further, but do not go lower than value 4/255 as that is 'off'. thankfully you can set it to not go below 4 in the in app settings before you play with it. My configuration pushed to 8hrs+ screen time without any gaming =>
Do note that li-ion/poly batteries need to drain over time for batt health reasons. They generally last longer if kept in the 20-80% range. Room temp can also affevt battery drain significantly, cold < 26C room drains the batt real fast; and so does hot rooms >34c due to temp & conductivity relationships (batt needs to suply more due to less conductivity in the circuits when hot)

Ultimate Battery saving solution Thread!

Hello guys,
I have been researching, experimenting and trying many many things to understand how cell phone battery consumption works and how to find the solution to be able to use the most of the battery! HTC did a very bad job on the battery side of M9 and in my opinion, Battery is the only downside of M9. I will explain later why I say that.
I will share the tips and tricks I found to get such battery life that none of you ever think of getting out of M9. Look at below battery stat. It looks like M8 battery stat which made all M8 user really happy with their device! Now we will be enjoying that too! BTW This is my birthday today, so its a very good day for me to post this thread. Wish me luck!
First Let me explain some things about why a phone drain the battery in relation with CPU and Apps.
1. Random CPU freq change.
2. CPU heat.
3. When phone is idle, means you are not doing anything(not opening apps or neither you have apps opened in background, CPU freq not being able to stay down.
4. GPU related drains(while playing games or not)
5. Display category. Amoled or LCD or what type.
6. Buggy ROM keeping wake locks. ( I am not going to talk about wake locks at all. There are good enough threads for this)
7. Apps. Each you open and close an app, the cpu starts working, freq goes high. So, this means, the less opening and closing you can do the less battery you consume. Now, all these concepts of app killer running in background, killing apps after a certain interval, ARE COMPLETELY WASTE OF BATTERY AND NOTHING ELSE! Android keeps opening apps in background according to its algorithm. So, if you want those app to stop bugging you in the background, then task killers are NOT ANY USE AT ALL! Remember! The less app in background the less drain you will get. We usually use home button a lot when coming to home screen but we dont realize the app just got minimized and consuming as much as battery as it would if it was open in the foreground. So result is, bad standby time + more drain while screen is on.
So how can you get rid of those background apps? Best way is to use Greenify. Greenify is the only app that can hibernate any app without hogging battery by itself and keeping wake locks. How to find which apps to put under auto hibernation list? You need 2/3 days to observe. Greenify will automatically mark those apps which opens in background. Once you are with good number of apps, greenify all of them. In greenify settings, select autohibernation so that even if some gets awake by the app, can be put to sleep again. Now two things will hapen because of this.
1. You will consume MUCH LESS CPU power means you will save battery. The device will be very snappy. Ram will be at least 1.3 gb free.
2. It will take more time for an app to open which are under your hibernation list. Now I have thought about it. My conclusion is that, I need to choose between battery and super fast device. When I on battery saving priority I follow the solutions of this threads and when I am not worried about the battery I try to enjoy the device.
So, we can restrict apps from hogging with greenify. Now how to control the CPU?
Out CPU is actually ULTRA FAST and is capable of fastest performance amongst all smart phone around. Here is the antutu benchmark to show how crazy this CPU can be! So crazy CPU will drain battery. Its cor-relational. So, the solution is to limit the CPU from putting too much power, especially when it gives more than the phone and user needs. When I was using HTC Sensation, I was feeling like, there are 2/3 things which should be better and I demand nothing more from a phone. LIke battery, camera, ram etc. But after M7 I have never felt that the phone should get faster and we should get like 4 gb of ram either~! But newer means faster and better. So CPU + GPU are getting more powerful and eventually the phone is getting such overrated power which it doesnt even need! After all we are not flying to moon with our phones! lol!~ Right?
ok Now how to limit the CPU?
We need
1. Elemental x kernel 4.01 installed with all stock configuration. This is important. Yout must use STOCK values. I have seen anything else other than STOCK values drain the battery even more! So STOCK IS BEST!
2. Elemental x kernel app or Kernel adiutor kernel config app to tune the kernel for our battery saving mode.
Steps-
- Set HTC pnp manager off
- Set max cpu freq of small cluster to 864 mhz, min cpu freq to 384
-Make sure you are on stock gov.
- Set GPU max to 320 GHZ.
-Flash this zip by @ivicask Battery tweaked php zip
[url=http://postimg.org/image/uoq5zw5j5/]
[/URL]
[url=http://postimg.org/image/xf43atrlt/]
[/URL]
[url=http://postimg.org/image/fotohog75/]
[/URL]
Disclaimer: These settings will make the phone performance slower but not laggy. So, just consider a power saver package which has very decent speed too!
After applying these settings, you better restart your device to let settle it with new rules for CPU. leave the phone for 2/3 mins. The things that you will notice when you turn on the display -
1. No rapid CPU freq changes
2. Phone is ultra cool as the temp of CPU and battery has gone down to 35 C. M9 with default setting will never come down to 35 c ever! The lower temp would be 40 c. So, cooling the cpu will minimize mA consumption.
3. when you open any heavy app like fb or chrome you will see the consumption mA rate is almost half of what it is with default settings. Max rate of discharge was 700 mA for me with 50% brightness + 3g internet + FB/chrome/youtube.
4. When you leave your phone to sleep, here is the fun! I have never seen such low mA discharge rate on M9 and I didnt even expect! It goes as low as 40 mA! Insane! The avg screen of discharge rate I found was 70 mA which means on full charge our M9 will get 40 hours standby! And that is with internet on.
5. If you are charging with official m9 charger, you will see the charging rate is 850/+- mA while your display is on with internet. When screen off it will reach mac to 1340 mA. My phone previously was charging at 600 mA with screen off. So, now 0 to full charge is only in 2 hours.
6. Clash of Clans used to drain 1200 mA and now it drains only 550-600 mA.
[url=http://postimg.org/image/7ookkoe0x/]
[/URL]
Hope this helps. Please post your battery results. And dont forget to tell me if you like this post. This will inspire me to make more posts.
Thanks!

I'm in the search of the perfect battery life too haha ????. Please continue posting about battery improvements. Thanks!

My battery life goes way up when I put the phone in the glove box of the work truck. 0% drain over 5 hours, checked it for call a few times and that was it. I leave data and stuff switched off until I'm going to use it.
Sent from my HTC One M9 using XDA-Developers mobile app

Instead of turning PNPMGR off, have a look at this first. http://forum.xda-developers.com/one-m9/development/mod-htc-one-m9-enhanced-thermal-t3369574
It's a pretty indepth thread on the pros and cons of PNPMGR, and also custom thermal configuration files that change clock speeds of your CPU, dependent on your usage.
Also, your Antutu benchmark picture isn't anywhere to be found.

What about CPU boost? Do you disable it?
Skickat från min HTC One M9 via Tapatalk

I do all like u but my m9 is still after few minutes too hot.
I never was more diaappointed with any another of my phone and heating and poor batt life like on m9...
After one hour of browsing internet I'm over 50% down.. on stock mm. That's shame for HTC. Now I'm back on my 2yrs old s5 with still perfect battery life..

I don't get any overheating on my m9 at all. It's on stock marshmallow still. Bought it used a couple weeks ago.
Sent from my HTC One M9 using XDA-Developers mobile app

BLEK0TA said:
I do all like u but my m9 is still after few minutes too hot.
I never was more diaappointed with any another of my phone and heating and poor batt life like on m9...
After one hour of browsing internet I'm over 50% down.. on stock mm. That's shame for HTC. Now I'm back on my 2yrs old s5 with still perfect battery life..
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Click to collapse
Hi,
If you did an OTA update to MM and are losing that much battery in just an hour of heavy use, then I would back up everything and do a factory reset. I can go for 5 hours of very heavy power user performance before dropping to that level. Either that, or you have a malware app on the phone that is being used in the background. Which a factory reset will also solve.( except in rare cases, requiring a firmware reflash)

+249904226367. M9 ftw!!!

350Rocket said:
My battery life goes way up when I put the phone in the glove box of the work truck. 0% drain over 5 hours, checked it for call a few times and that was it. I leave data and stuff switched off until I'm going to use it.
Sent from my HTC One M9 using XDA-Developers mobile app
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the same happens to me , but when i used it , it drains really quickly , i wonder why

lateral18 said:
the same happens to me , but when i used it , it drains really quickly , i wonder why
Click to expand...
Click to collapse
Just follow this link as the issues have been dealt with about as good as it can get.. good luck
http://forum.xda-developers.com/showthread.php?t=3369574
Æaa..\../

takota6 said:
Just follow this link as the issues have been dealt with about as good as it can get.. good luck
http://forum.xda-developers.com/showthread.php?t=3369574
Æaa..\../
Click to expand...
Click to collapse
I did , thanks to that script , the phone is so much better now :fingers-crossed: