Database Users

110 hours on a single charge!

[Edit:] I've changed the title to reflect 110 hours. The original title and body of post reflected 100 hours, but since then I've added two more screenshots at the end of this post to show 110 hours (4 days 14 hours), and I added a (absolutely horrible) video to show that I'm running a standard battery (not an extended battery). NOTE: When I say the video is horrible, I mean it came out sideways, and is barely readable, and is a ridiculous 29MB in size. But the two added screenshots back up the readings and statements in the video. What follows below is my original post.[/edit]
Hey all, this is probably not any real record around here, but I wanted everyone to know I've just passed the 100 hour mark, running 100% uptime since the last battery charge!
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Notably, for at lease one-third of the total time, the phone was in an area of poor (or no) signal strength.
For this test, I had wi-fi, mobile internet and GPS all disabled...the only active radio enabled was the telephone voice radio, which was always enabled. I could (and did) recieve calls during the entire time (though I kept the conversations very short).
Here's how I've got my phone set up:
nfinitefx45's stock 2.1 ROM and Darch's Infinitefx_vUV_710 kernel, without freemem tweak (it's not the new vUV2 kernel).
SetCPU, set to 614mhz max and 19mhz min (245 max & 19 min sleep mode), with additional fine-tuning.
AutoKiller, with values I set individually for the different fields (didn't use any of the pre-set options...my settings are probably pretty close to "Agressive", except for the Content Provider value).
I use Advanced Task Killer to kill any apps that I'm no longer using, and I always have. But I've got it set to ignore SetCPU (because I've got a screen-off profile defined and enabled), and also set up to ignore AutoKiller (but I'm not sure if that's really necessary).
Notice the amount of time the phone spends at the different cpu speeds:
Because of the way I've got SetCPU set up, even though I have max speed set to 614mhz my phone rarely runs at that speed...the Powersave bias is set to 125, so most of the time that I'm demanding any real-time performance from my phone, it's actually only running at 537mhz. Likewise, even though screen-off max speed is 245mhz, most of the actual activity in that mode is at 122mhz or 160mhz, again due to the the Powersave bias setting of 125.
Also note that a great deal of time is spent at 19mhz, during both screen off and screen on states. Even so, I experience no noticeable lag, because the phone immediately jumps up to a faster speed as soon as any need arises (such as swiping between screens).
In case you're wondering why some cpu time is showing at 710mhz even though I have the max speed set to 614mhz, remember that I'm running the 710mhz kernel, so while the phone is booting it's running at 710mhz.
I must admit to being miserly in the use of my phone during this test, even though I burned a couple of percent battery downloading the ShootMe screenshot app last night (just so I could provide these pics). And I used EStrongs File Explorer to send the screenshots to my computer over the wi-fi so I wouldn't have to plug in the USB cable.
One more thing...I'm not done yet! I'm going to get another screenshot after my Saturday afternoon nap...hopefully I can get 110 hours out of a single charge.
Cheers!
[Edit:] Here are the two added screenshots that show 110 hours (4 days 14 hours), and the horrible video I shot to back up the fact that I'm using a standard battery.[/edit]

Thats crazy!
Sent from my evo

That's a lot of time on one charge. But as you said, not using it much. I think the 2+ hours of awake time is telling.
Sent from my HERO200 using XDA App

mgraham361 said:
That's a lot of time on one charge. But as you said, not using it much. I think the 2+ hours of awake time is telling.
Click to expand...
Click to collapse
The point of my post was to show how I've set up my phone to conserve battery when the phone isn't actually busy doing something.
Many forum members, in many different threads, have stated that they burn through battery at a rather disappointing rate even when they're trying to conserve juice. Darch went to the trouble of building up a batch of UV kernels to alleviate as much of that problem as he could (thanks Darch!). In large part, my post was basically explaining how I've taken advantage of that kernel, and nfinity's ROM (thanks to you too, nfinityfx45!), and careful tailoring of system and app settings to set my phone up so that battery drain during periods of inactivity is minimized.
Taken as a whole, the results indicate that my average battery drain is less than 1% per hour. In light of the fact that one third of that total time was spent trying to stay connected to a poor signal, I'm quite confident in stating that during times of good signal my bettery drain is significantly less than 1% per hour.
How many people can say they're realizing that kind of battery conservation with their Hero on an everyday basis? I've gone to the trouble of determining what works and what doesn't in terms of conserving battery, and reported on the setup and the results. That's all.
Another point that could probably be taken from the data is that, all other things being equal, I would probably get better battery life doing the same everyday stuff with my phone than the regular Joe who hasn't taken similar measures to minimize unnecessary battery drain on his device.
The bragging was just icing on the cake!
Edit: So sorry, I meant to also thank urushiol for the UV kernel!

This is pretty sick! Are you also using an extended battery?

i thought that auto killer is bad if you use an OC kernel?
thats hella right though
i've been waitin for someone to post somethin like this so i can maybe get 24 hours with moderate usage

infernosoft said:
This is pretty sick! Are you also using an extended battery?
Click to expand...
Click to collapse
Nope, I'm using the original battery.
The phone just now beeped at me, and the warning screen says I have no more than 9% battery remaining. In two more hours I'll have 110 hours on the battery. At that time I'll use my wife's Hero to take a video of my phone's battery usage screen, and then I'll pull the battery cover off of my phone in the video so you can see I'm running a stock battery...it says "HTC Innovations" on it.
I'll post the video after that.

macvalentine said:
i thought that auto killer is bad if you use an OC kernel?
Click to expand...
Click to collapse
AutoKiller is only bad if you're using one of the kernels with the built-in free mem tweaks.
That's why I'm not using a kernel with free mem tweaks...that way I'm free to use AutoKiller and set it up like I want. And I want a custom setup, not one of the preset offerings that comes with the app. I want to use agressive values for most of the settings, but I want to set the kill value for Content Provider to a low number, because if I use the preset value for Content Provider in the Agressive setting, it will kill the GPS antenna input to my tracking app when I'm on my mountain bike, because the phone's in my jersey pocket with the screen turned off...in such a situation AutoKiller presumes the content provider to be a background app and shuts it down if the kill value is set to anything but low...sheesh!

Okay, I've edited my original post to include a HORRIBLE video showing the standard battery being used, and I added two more screenshots showing 110 nonstop hours on a single charge.
So I'm going to finally put this project behind me now, and get back to the truly enjoyable business of actually using my phone again!
And a HUGE thanks to all the devs who've made it possible to get such incredible performance out of our phones!
If anyone cares to know why I decided to use any of the settings that I did, just ask and I'll be glad to talk to you about it.
Cheers, and a good night to all!

wow thanks for the info on autokiller
i can actually use it again! whoo!

Unhappy with your battery life? Fix is here!

Hi everyone,
I have had my Galaxy S for a month now, I have been very unhappy with my battery life, so I thought, I gotta to fix without compromising perfomance.
I found it!
My battery life during this 1 month period was utter crap, battery used drained from 100% in about 10-12 hours on average.
At the time I was running the latest FWs (I kept updating as the FWs came out) with Mimocans EXT4 fix.
I was with lowest brightness setting, running on 2G without any screen animations.
So heres the fix:
Install SetCPU 2.02, make sure to apply on boot, make the minimum speed 100mhz and the top 800mhz.
This ensures the phone doesn't ever go to 1ghz but that the performance is never compromised (even when playing games, videos, apps).
Because I have the Mimocans fix, everything is smooth and battery life goes down very slowly!
Heres the stats of my battery right now:
Battery Level 70%
21h 40m 25s secs since unplugged
Display 37%
Phone Idle 27%
Cell standby 21%
Voice calls 7%
Android System 4%
Internet 2%
Android OS 2%
You can give this guide a go, sorry if it doesn't work, just trying to help.
Regards,
Azazin!

azazin said:
Hi everyone,
I have had my Galaxy S for a month now, I have been very unhappy with my battery life, so I thought, I gotta to fix without compromising perfomance.
I found it!
My battery life during this 1 month period was utter crap, battery used drained from 100% in about 10-12 hours on average.
At the time I was running the latest FWs (I kept updating as the FWs came out) with Mimocans EXT4 fix.
I was with lowest brightness setting, running on 2G without any screen animations.
So heres the fix:
Install SetCPU 2.02, make sure to apply on boot, make the minimum speed 100mhz and the top 800mhz.
This ensures the phone doesn't ever go to 1ghz but that the performance is never compromised (even when playing games, videos, apps).
Because I have the Mimocans fix, everything is smooth and battery life goes down very slowly!
Heres the stats of my battery right now:
Battery Level 70%
21h 40m 25s secs since unplugged
Display 37%
Phone Idle 27%
Cell standby 21%
Voice calls 7%
Android System 4%
Internet 2%
Android OS 2%
You can give this guide a go, sorry if it doesn't work, just trying to help.
Regards,
Azazin!
Click to expand...
Click to collapse
Please update with display time, phone idle time, standby time and voice call time. Without it these are a bit useless, these don't seem far from my stats when I use the display for +/- 1 hour.

alovell83 said:
Please update with display time, phone idle time, standby time and voice call time. Without it these are a bit useless, these don't seem far from my stats when I use the display for +/- 1 hour.
Click to expand...
Click to collapse
I have the percentages up in the OP.
This guide isn't just for turning crap battery life to good, it's also for people to extend their battery life if they already have a decent one.
Following the underclock to 800mhz my phone can last this long, compared to before when it used to last 10-12 hours with same usage!

azazin said:
I have the percentages up in the OP.
This guide isn't just for turning crap battery life to good, it's also for people to extend their battery life if they already have a decent one.
Following the underclock to 800mhz my phone can last this long, compared to before when it used to last 10-12 hours with same usage!
Click to expand...
Click to collapse
The percentages stand out, thanks, I saw them. Again, they are a bit meaningless without the time used. If you don't use your phone for 24 hours you should lose maybe 5% with sync off.
So, please, click on "display" and report the time that the display has been on, repeat for the other usage categories, other people will ask for this same information. I don't know if you didn't know how to do that or if you are witholding the information, hopefully it's just the former. I understand that, perhaps, you are doubling your battery life, but depending on the way we use our phones, relative to the way you use your phone we can see better or worse results. Doing this will allow us to know how much you use your phone and for what purpose, so we can make personal judgments about its merits to our usage.
TIA

This may fix the issue but it's merely a patch to cover up the wound. From my experiments I've found that in most cases the problems are related to the phone never entering sleep-mode. If you have bad battery life, please do the following:
0. Make sure you phone has been running on battery power for a while, usually a day with only 20% battery left is a good place.
1. Type *#*#4636#*#*
2. Go to Battery History
3. Other usage and "Since last unplugged"
4. Check the "Running" bar. Generally, if this is over 60% something is wrong.
5. Go to partial wake
6. Check if there's some application (e.g. Facebook) that has a high partial wake percentage. This is bad. System should be on top on most systems.
So, do you have the signs of something being wrong? Fear not! Usually this is due to a program or service misbehaving. I had bismal battery life (about 15 hours, just check the other thread for several of my posts), and then I uninstalled "Weather from Yr". I also let my phone discharge completely, then charge TURNED OFF over night. I then disabled auto brightness and "power saving" in the display. Yes, I disabled the power saving feature, and my battery life went sky high. Now I have about 2 days of moderate use (1h 30 min on) and about 1 day with heavy use. Letting any application run while the screen is off using partial wake KILLS my battery.
Unfortunatley, I didn't follow proper scientific approach when conducting my experiments, so I can't say which of the three things (uninstall weather from yr, complete discharge/charge cycle or turning off power saving) that did it for me, but it's worth a shot if you haven't rooted your phone. Post back with results.

alovell83 said:
The percentages stand out, thanks, I saw them. Again, they are a bit meaningless without the time used. If you don't use your phone for 24 hours you should lose maybe 5% with sync off.
So, please, click on "display" and report the time that the display has been on, repeat for the other usage categories, other people will ask for this same information. I don't know if you didn't know how to do that or if you are witholding the information, hopefully it's just the former. I understand that, perhaps, you are doubling your battery life, but depending on the way we use our phones, relative to the way you use your phone we can see better or worse results. Doing this will allow us to know how much you use your phone and for what purpose, so we can make personal judgments about its merits to our usage.
TIA
Click to expand...
Click to collapse
Hi,
Oh okay lol, no problem.
Display: 1h 22m 8s.
Phone idle: 20h 51m 22s
Cell standby: 12h 12m 52s
It doesn't look like I have used it much but during the time the display has been on, I have either been:
Playing games,
Texting,
Twitter,
Or Internet.
It doesn't look like much, but I recommend you try this and post results before and after

dagingaa said:
This may fix the issue but it's merely a patch to cover up the wound. From my experiments I've found that in most cases the problems are related to the phone never entering sleep-mode. If you have bad battery life, please do the following:
0. Make sure you phone has been running on battery power for a while, usually a day with only 20% battery left is a good place.
1. Type *#*#4636#*#*
2. Go to Battery History
3. Other usage and "Since last unplugged"
4. Check the "Running" bar. Generally, if this is over 60% something is wrong.
5. Go to partial wake
6. Check if there's some application (e.g. Facebook) that has a high partial wake percentage. This is bad. System should be on top on most systems.
So, do you have the signs of something being wrong? Fear not! Usually this is due to a program or service misbehaving. I had bismal battery life (about 15 hours, just check the other thread for several of my posts), and then I uninstalled "Weather from Yr". I also let my phone discharge completely, then charge TURNED OFF over night. I then disabled auto brightness and "power saving" in the display. Yes, I disabled the power saving feature, and my battery life went sky high. Now I have about 2 days of moderate use (1h 30 min on) and about 1 day with heavy use. Letting any application run while the screen is off using partial wake KILLS my battery.
Unfortunatley, I didn't follow proper scientific approach when conducting my experiments, so I can't say which of the three things (uninstall weather from yr, complete discharge/charge cycle or turning off power saving) that did it for me, but it's worth a shot if you haven't rooted your phone. Post back with results.
Click to expand...
Click to collapse
2 things:
1) the phone number thing is pretty cool, in the past I've used "Spare Parts" for identical and a bit more information. I encourage people to use one or the other.
2) You can still fix the unscientific nature of your experiment by a factor of 1/3. You can turn power saving back on, and I'll try it. Also, I'll assume that 1 charge wouldn't make a world of difference, so I think that could've added a few minutes to your phone life (more than charging with the phone on) but maybe someone with actual technical knowledge can chime in.
As for any program running in the background, I had a similar situation where I was going from losing about 30% in a day, similar to the OP, while using the phone, and hence the display, for about an hour at work. I also, always preferred to leave the phone off the charger overnight, so I'd have been unplugged for 16+ hours. One day I allowed 3 things to run to check both battery and 3G usage (I have 500mb per month until I decide to change my plan, probably waiting for the new deal thats been announced for unlimited data for an extra 10 bucks sometime this month). So, I ran:
Sync
3G data monitor (To test if I would go over what I'd use too much data from my allotment, refresh every 30 mins IIRC)
ATK (to kill tasks, hoping they'd use less of my precious bandwidth)
This 2 tasks plus sync just CRUSHED my battery, by the first time I turned on the screen I saw more than 50% drain from my battery, probably around lunchtime (probably 3.5 hours from the start of work). I turned off all 3 and, like you, I haven't conducted a scientific experiment since.

I tried something similar with overclock widget, but I had the impression that underclocking made the SGS really unstable. It freezed completely like 3-4 times a day. After uninstalling overclockwidget the device didn't crash anymore.
So how are the longterm effects (say, 1 week) of setcpu?

If anything I'd OC my phone, not the other way around.

XQC said:
I tried something similar with overclock widget, but I had the impression that underclocking made the SGS really unstable. It freezed completely like 3-4 times a day. After uninstalling overclockwidget the device didn't crash anymore.
So how are the longterm effects (say, 1 week) of setcpu?
Click to expand...
Click to collapse
The software probably isn't optimized for your usage scenario, I don't think an underclock, if done right, should be that bad, OC on the other hand...
ShezUK said:
If anything I'd OC my phone, not the other way around.
Click to expand...
Click to collapse
I'm in the same boat, screen uses 80%+ of battery when the screen is on, as long as I'm not wasting battery when the screen is off and processes aren't running I have excess battery life, not to mention a spare battery, which I'd like to get more use out of if I could better my experience.

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crap battery life
---------- Post added at 04:24 PM ---------- Previous post was at 04:22 PM ----------
crap battery life

CM7 Users Please Read!

I wanted to gauge battery life and stability on the CM7 Nightlys. So post your vote and then make a reply with the following info:
Which Kernel: Slayher, chad, tiamat...
Battery Size: 1300, 1500, 1800, 3500?
Current Batt. Life and Uptime: 50% and 5-1/2 hours
What is on? Wifi, GPS, Bluetooth, # of mail accounts

slayher
1500
46% and 5h35m
Wifi on, GPS on, 3 Mail accounts

Savaged-Zen - Smartass - 128/1113
Stock 1300 Battery
73% - 14 hours 16 minutes uptime
wifi, sync, weather (1hr), gmail(push), twitter(15mins), facebook(1hr)

g00s3y said:
Savaged-Zen - Smartass - 128/1113
Stock 1300 Battery
73% - 14 hours 16 minutes uptime
wifi, sync, weather (1hr), gmail(push), twitter(15mins), facebook(1hr)
Click to expand...
Click to collapse
you can overclock without random reboots with that kernel? i just flashed it today but used min 128 max 998 on smartass i will try 1113 too thanks for the tip bro

kidhudi said:
you can overclock without random reboots with that kernel? i just flashed it today but used min 128 max 998 on smartass i will try 1113 too thanks for the tip bro
Click to expand...
Click to collapse
In 4 days I've only had 1, so not that bad to me at all. Then again, it may just be the hardware, as all of our phones all respond differently to everything.

g00s3y said:
Savaged-Zen - Smartass - 128/1113
Stock 1300 Battery
73% - 14 hours 16 minutes uptime
wifi, sync, weather (1hr), gmail(push), twitter(15mins), facebook(1hr)
Click to expand...
Click to collapse
wow, thats incredible...
I don't think I have ever had close to that. You must live right under a wireless tower or something...

I charge frequently, so I don't have a lot of long runs from which to take data, but this past weekend I decided to see how long I could run my Inc using its current setup. I keep things switched off unless I'm using them (like GPS, BT, etc) and at night when I go to bed, I turn off mobile data. This allows me to still receive calls in the event of a late-night emergency (unlike airplane mode). I don't need my phone to stay up-to-the-minute with emails and such while I'm asleep.
byrong said:
Stock HTC 1300 mAh battery - still had 7% left today after running more than 42 hours on a standard (non-bump) charge.
Usage was a bit lighter than normal, but I still made a number of voice calls, watched a couple episodes of my favorite shows, etc. So it's not as if the phone was just sleeping the whole time.
This was using Chad's 2.6.37 kernel (Feb 11 version) and SetCPU profiles
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Click to expand...
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As you can see from my screen-on / wake time in those images, I'm not a heavy user of my phone. People who are playing tons of games and constantly syncing social apps can't expect to get anywhere near the battery life as lighter users. Custom kernels and clock speeds can only go so far.

I'm at 27% w/ 9h15m now

Which Kernel: Chad
Battery Size: HTC 2150
Current Batt. Life and Uptime: Normal Life is about 10-14 hours
What is on? GPS is always on, 3G is on except for the 3-5 hours at home in the evening when WiFi is on instead, 1 to 1.5 hours of Bluetooth, 3 gmail accounts in the gmail app.
I also use both Twidroyd syncing every 15 minutes for 1 twitter account, and Tweetdeek syncing every 30 minutes for 1 twitter, 1 facebook, and 1 foursquare account, Droidin syncing every 12 hours, and Scanner Radio running in the background...

I'm thinking my other battery is junk. I bought it off ebay as a 1750, supposedly that means its 1500. I think even if it is 1500 its not as high quality as the stock, so I am going back to stock until my new battery comes in.

Stock battery, incredikernel with smartass, .92 hboot, .19 radio
3g on, heavy internet and xda app, battery 27% after 9 hr 1 min.
Sent from my ADR6300 using XDA App

Which Kernel: Chad Incredikernel.
Battery Size: 3500 mAh Seidio
Current Batt. Life and Uptime: 2 minutes. Freshly installed CM7 #3. Before CM7 #3 got 2 days 12 hours.
What is on? Wifi, GPS, bluetooth, 1 e-mail, 1 gmail, auto brightness. Everything syncs in 15 mintue intervals.

Which Kernel: Invisiblek
Battery Size: HTC stock battery (1350 I think)
Current Batt. Life and Uptime: Normal Life is about 3-6 hours
What is on? GPS is always on, 3G is on, 3 gmail accounts in the gmail app.
I am down to 26% after 2h and 26m.
Tasker seems to suck most of my battery life (25-35%).
I dont play many games or surf the web so I dont know why this is happening. I used to get between 12-16 hours on CM6 but I ran juice defender which I think helped a lot. My tasker profiles are triggered by location and I think that when I am indoors it has my gps running, but looking at the battery info this does not seem to be the case..

Which Kernel: Slayher
Battery Size: 1800
Current Batt. Life and Uptime: 54%; 10 hours up
GPS on but not used; I used 3g the whole time. 1 mail account, weather/news widget updating and probably some other stuff too

GatorsUF said:
wow, thats incredible...
I don't think I have ever had close to that. You must live right under a wireless tower or something...
Click to expand...
Click to collapse
no, i live in the ghetto of jersey city. Unless "timberland boots on the power lines" qualify as a wireless tower... lol

Stock Battery
Incredikernel (Chad's 2/22/11 build)
62% after 7.5hrs on battery (light use throughout the day)
GPS, 3G/Wifi, 2 gmail accounts

Ke1evraTi said:
I am down to 26% after 2h and 26m.
Tasker seems to suck most of my battery life (25-35%).
Click to expand...
Click to collapse
Holy crap - that is completely unacceptable.
Not only is that awful battery life, but Tasker should not be using that much power. I use it a lot and have never once seen it get close to that.
Ke1evraTi said:
My tasker profiles are triggered by location and I think that when I am indoors it has my gps running
Click to expand...
Click to collapse
Sure sounds like it: I can't think of anything else Tasker does that would suck up that much power. I would suggest you refine your location profiles to use non-GPS methods (such as the Wi-Fi Near state).
If Tasker is trying to lock down a GPS location and you're indoors (or somewhere else where GPS reception is poor), that is a sure fire recipe for bleeding your battery.

byrong said:
I charge frequently, so I don't have a lot of long runs from which to take data, but this past weekend I decided to see how long I could run my Inc using its current setup. I keep things switched off unless I'm using them (like GPS, BT, etc) and at night when I go to bed, I turn off mobile data. This allows me to still receive calls in the event of a late-night emergency (unlike airplane mode). I don't need my phone to stay up-to-the-minute with emails and such while I'm asleep.
As you can see from my screen-on / wake time in those images, I'm not a heavy user of my phone. People who are playing tons of games and constantly syncing social apps can't expect to get anywhere near the battery life as lighter users. Custom kernels and clock speeds can only go so far.
Click to expand...
Click to collapse
What app is that

Keyboards said:
What app is that
Click to expand...
Click to collapse
It's just the built-in battery info in CM7
Settings > About phone > Battery Use
That will show you the small plot with app detail below. If you then press the plot, you get to the enlarged view of it, which also shows signal/gps/awake/screen/charging

GatorsUF said:
slayher
1500
46% and 5h35m
Wifi on, GPS on, 3 Mail accounts
Click to expand...
Click to collapse
Goes to show you what a warn-out crappy ebay battery does for you...bought a "1750, found out its more like 1500. Also turns out it wears out after a few months...bad" That said OEM 1500 on the way.
slayher
stock 1300 mAh
74% 6h 8m
Wifi, GPS, same as above...

Hello all

Hi everyone, I'm new to the forum. Recently got a Nexus S i9023, very happy with the phone. Messing around with custom ROMs, currently running latest NSCollab with latest matr1x kernel, 9.5.
Any suggestion from others who have the same setup? Curious about battery life, as I seem to not get the same average-use runtimes as others who post in the dev forum.
Thanks for feedback!

You're running the same setup that I am, and my phone easily runs 20+ hrs with the stock battery.
I run 100/1000 mhz, smartassv2, -35mV undervolt, deep idle enabled. I'm a bit more active in power management than others; leave 3G off unless I need it, use only wifi while at home, and decrease screen brightness to bare minimum.
Usually take advantage of power conserving tricks such as dark wallpaper, inverted browser colors, minimal widgets, etc.
NS4G NSCollab Sprint 1.0.51, Matr1x 9.0, Shady Arctic Blue Theme

I am lazier than you- won't probably start switching 3G on and off. I switch it to 2G when the battery is down and I can't get to a charger.
WiFi on only as needed of course. Will play with undervolting soon.
DeepIdle though- it should be the ONE thing that extends the battery by hours, although I can't seem to see the benefit. Idle drainage is still 4%-5% every hour. Does it seem normal to you?

No, that's not normal. Check to see if deep idle is enabled and check for any misbehaving apps. My battery usage flatlines when the screen is off.
You can also try Juice Defender for automatic power management. It turns off the 3G radio when the screen is off, but still lets apps and email sync when they need to.
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NS4G NSCollab Sprint 1.0.51, Matr1x 9.0, Shady Arctic Blue Theme

Great screenshot suggestion, got that battery monitoring tool. Will report back.
What app should I use for detecting high unusual CPU usages? Any specific good one in mind? I find that everything seems normal in the built-in Android battery statistics info panel...

Also, how do you feel about the battery charge "fix" that allows the battery to reach 100%? Does your 9.0 kernel have the patch too? I read different opinions about that, I don't mind some extra juice but I wouldn't want to see the battery deteriorate, since I often leave it plugged overnight.
Or maybe it's a fix in the sense that it shows 100% but it still charges to less than that?

You can click "Usage" and/or "Statistics" in BMW to see what's been using power. SystemPanel is also a good monitoring app, but it's a paid app.
Matr1x 9.0 does have the 100% battery charge feature (I'm currently using 9.5) but I'm not sure if it truly fills the battery cells or if it's just a percentage display trick. My battery charges to 100%, 1440mAh, and 4,187mV so I think that's a true full charge.
I'm still new to the Nexus, so I've not yet learned all the quirks and minutiae of this phone. Coming from the Evo 4g and I just switched to nexus a few weeks ago.
NS4G NSCollab Sprint 1.0.51, Matr1x 9.0, Shady Arctic Blue Theme

See:
Uploaded with ImageShack.us
At idle time, phone still consumes more or less 15-20 mA, as evident from the graph. Yours seems to absolutely not drain current at all (your charge stays at 100% and your mA graph is at 0 for a good two hours)!
You could post a screenshot of your detailed battery history readings (bottom left button "History") when you have a chance. Just out of curiosity.
Thanks for the info you gave me so far!

-15 or so mA is not unusual at idle. Mine actually runs around -5 at rest. My Evo wouldn't go any lower than -16mA.
Been using the phone nonstop tonight, so I scrolled back a bit to find an idle period in the history. Sorry for so many data points... it updates every two minutes.
NS4G NSCollab Sprint 1.0.51, Matr1x 9.0, Shady Arctic Blue Theme

Welcome!

Pleased to meet you!
Braneless, thanks for posting. Now are those idle battery drains with data on? On wifi, or 3G, or 2G, or what? All other connections off?

I use 3G only when I'm out and about, but wifi is on at all times when I'm home. WiFi radio draws a fraction of the power that 3G does, so I just leave it connected.
In other words, the battery history figures are with 3G off and wifi on (set to never sleep with screen off).
Setting wifi to never sleep prevented random reboots with certain roms for the Evo - I just carried that practice over... not even sure if it's necessary for the Nexus.

I use NexusMV with latest Matr1x kernel and I use 1% overnight with airplane mode on.
After 24h I still have 58% left right now

Bad news.
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I was testing idle battery drain again tonight. Got a system hang of some sort, had to pull the battery. Phone didn't come off of sleep. I was testing with WiFi off and 2G only. As you can see the battery went down 35% during the system hang, in just little over an hour.
I also noticed I don't get anywhere close to only 5mA drain in idle, even with just WiFi on, like braneless. Again, running latest NSCollab ROM with latest Matr1x kernel, 9.5.

Have you tried checking if there is this file in "/sys/class/misc/deepidle/enabled", it should be 1 if enabled, 0 if disabled.
I think that in some versions of the kernel deep idle would be implemented but not enabled by default.

waterface said:
Bad news.
I was testing idle battery drain again tonight. Got a system hang of some sort, had to pull the battery. Phone didn't come off of sleep. I was testing with WiFi off and 2G only. As you can see the battery went down 35% during the system hang, in just little over an hour.
I also noticed I don't get anywhere close to only 5mA drain in idle, even with just WiFi on, like braneless. Again. running latest NSCollab ROM with latest Matr1x kernel, 9.5.
Click to expand...
Click to collapse
This system hang is the reason why I left NSCollab. Too many times I woke up with my device not waking up (note: the alarm wouldn't go off either)
There's more people reporting the same issue on NSCollab, no idea what causes it though.
Greetz

frutelaken said:
This system hang is the reason why I left NSCollab. Too many times I woke up with my device not waking up (note: the alarm wouldn't go off either)
There's more people reporting the same issue on NSCollab, no idea what causes it though.
Greetz
Click to expand...
Click to collapse
Did you undervolt the kernel? I had the same issue when I was running an aggressive -75mV, but it completely disappeared when I reduced it to -25mV.

Sosdoc said:
Have you tried checking if there is this file in "/sys/class/misc/deepidle/enabled", it should be 1 if enabled, 0 if disabled.
I think that in some versions of the kernel deep idle would be implemented but not enabled by default.
Click to expand...
Click to collapse
Checked it, value returned was 1, enabled.

Braneless said:
Did you undervolt the kernel? I had the same issue when I was running an aggressive -75mV, but it completely disappeared when I reduced it to -25mV.
Click to expand...
Click to collapse
Matr1x 9.5 is an undervolted kernel, if I remember correctly, -35 mV. I flashed franco.kernel this morning to give it a try, seems like it has more recent bug fixes for deepidle mod. And is not UVed by default. I'll see what happens, and how's battery life with no UV.
Still wondering how braneless got just 5mA drain in idle. Would like to have his exact ROM/kernel/settings/tweaks/OC-UV setup posted!

You can also increase voltages using Proton Control.
My setup is pretty simple;
NSCollab Sprint 1.0.51
Matr1x 9.5, -25mV, smartassv2, deep idle enabled
ADW Ex launcher
Screen brightness set to 10%
3G off nearly all the time
WiFi used whenever I'm home
Autosync off, sync mail/cal. manually
That's it! Keep in mind that all phones and their chips are not built entirely the same due to manufacturing tolerances. Some phones can handle varying degrees of undervolt, underclock, overclock, etc. Power drain will vary as well.
Here's my battery summary screen, so you can get an idea of what's consuming my battery:

33% Battery Drain Overnight

I am experiencing a weird issue with my Battery Drain. I am on PA3.1 and since the time i have installed the ROM i am experiencing an overnight drain of about 14% - 18. However yesterday my battery fell to almost 33% overnight with the same config. today also it is behaving weird with 1% drain per minute of browsing.
Also i am not able to understand as to why SetCPU & Trickster are showing different values of Min Freq. (I might have done something unknowingly or am i missing something here)
the pics are attached for reference as i could not make out anything out of these....
The first pic is the earlier one -- at this point i was thinking of how to improve the situation and now it has gone all the more worse

i had the same happening to me out of the blue. i had a couple of apps installed that recently got updatedand and caused a mess. line for instance and a couple of deskclock add-ins.
check this stuff - delete apps that cause trouble. line for instance lost me as a customer
heres a diagram, that thing sucked away 30% overnight
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normal for this rom is 1-2% . after i deleted these apps its almost flatlining (each gap is a night in airplane mode)
i would also recommend not fooling aroundwith the kernel. stay stock, googles kernel is great. there is absolutely no need for custom kernels unless you're missing key functionality like tap to wake, fast-charge or whatever.

Download "Greenify". It'll stop all those apps from waking up without your knowledge and hibernate them.
Sent from my Nexus 4 using Tapatalk 2

molesarecoming said:
i had the same happening to me out of the blue. i had a couple of apps installed that recently got updatedand and caused a mess. line for instance and a couple of deskclock add-ins.
check this stuff - delete apps that cause trouble. line for instance lost me as a customer
heres a diagram, that thing sucked away 30% overnight
normal for this rom is 1-2% . after i deleted these apps its almost flatlining (each gap is a night in airplane mode)
i would also recommend not fooling aroundwith the kernel. stay stock, googles kernel is great. there is absolutely no need for custom kernels unless you're missing key functionality like tap to wake, fast-charge or whatever.
Click to expand...
Click to collapse
Looking at the graph i dont think it was some app as i have not installed any new app in between.
(though i will monitor closely the wake locks). Also from the beginning when i updated to PA the battery drain overnight has been ~18%.
Already have Greenify working for me
Also please give a view as to why SetCPU & Trickster are showing different values for minimum.

sumit999 said:
Looking at the graph i dont think it was some app as i have not installed any new app in between.
(though i will monitor closely the wake locks). Also from the beginning when i updated to PA the battery drain overnight has been ~18%.
Already have Greenify working for me
Also please give a view as to why SetCPU & Trickster are showing different values for minimum.
Click to expand...
Click to collapse
Okk last night i kept my phone on WiFi and the discharge was only 5%. So it seems that 3G is taking a lot of battery. Wake lock app do not show any wierd app as such. With the graphs that i posted could someone get an idea as to what is happening.....
And to repeat why SetCPU & Trickster are showing different values????

The same thing happened to me yesterday. Just out of the blue my battery was dropping around 1-2% a minute also. I'm on PA 3.1 too. I charged fully and did battery calibration this morning and it seems to be running a little better but still not great battery.
It's worth noting that when this happened i took my SIM out and put in my S3 (since I wasnt going to be near a charger and my batter was already at 50% after 3 hours of being off charge). When i came back home about 6 hours later it had not even dropped 1%. So I also think it is related to the 3G network

I'm almost 100% sure it's an app. I've been there before and at the end it always is an app. Doesn't really matter if u installed it just yet or weeks ago. I used for example widget locker for some days with no problem and suddenly it prevents my phone from sleeping and just drained it like hell.
Just try to find that bad app! I'm sure its there.
a pigeon delivered this message.... ** your welcome **

gohan040 said:
I'm almost 100% sure it's an app. I've been there before and at the end it always is an app. Doesn't really matter if u installed it just yet or weeks ago. I used for example widget locker for some days with no problem and suddenly it prevents my phone from sleeping and just drained it like hell.
Just try to find that bad app! I'm sure its there.
a pigeon delivered this message.... ** your welcome **
Click to expand...
Click to collapse
If you are getting kernel wakelocks then it's NOT an app that is causing the problem.
Sent from my Nexus 4 using Tapatalk 2

ftarules said:
If you are getting kernel wakelocks then it's NOT an app that is causing the problem.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
So what are u saying? If u get kernel wakelocks it can't be an app causing the battery to drain?
If u check CPU spy i think u will see that your phone won't go into deep sleep. Caused by an APP and not kernel related.
a pigeon delivered this message.... ** your welcome **

Please help!!
I'm about to lose my job. This morning my battery died (Around %30) and missed the alarm.
Running CM 10.1 Nightly 20130417
Kernel 3.4.0-perf-g85ba2bc [email protected]#1 Wed Apr 17
Please help!!

Aokp build 6 with trinity kernel clocked at 1458 mhz max amazing battery life
Sent from my Nexus 4 using xda app-developers app

jadle said:
Please help!!
I'm about to lose my job. This morning my battery died (Around %30) and missed the alarm.
Running CM 10.1 Nightly 20130417
Kernel 3.4.0-perf-g85ba2bc [email protected]#1 Wed Apr 17
Please help!!
Click to expand...
Click to collapse
Did you make a clean install ?
Try another kernel, i personally prefer it stock, franco is a great alternative.

Yeah idk what it is either. I had Paranoidandroid 3.15 running on my nexus for about 2 days, with custom kernel in WHEATLEY mode. Battery life was atrocious. It would only stay alive maybe 6-8 hours before I needed a charge. Switched back to CM10.1, same custom kernel with WHEATLEY, Ran my phone for 15 hours last night, and battery level was still at 60%. Not going back to PA

sandy-achar said:
Did you make a clean install ?
Try another kernel, i personally prefer it stock, franco is a great alternative.
Click to expand...
Click to collapse
I did, I some much did it. I do not remember any more which one gave the best/worst result.
Tried AOKP, CM, PA with Franco, Matrix Kernels. Still no result for the sleep (overnight) drains.
Or I think I should stop comparing battery behavior with my old Gnex.

Install stock ROM and kernel. Wipe everything!!!! Data cache dalvik cache etc etc. And start without installing apps and try this for at least 3 days.... If problem is still there you probably have a faulty battery.... If not , it must be an app giving u so much drain.
Other solution is get CPU spy and check if your phone goes into deep sleep. If its not going into sleep then u have found your problem... Next is to find the app that's keeping your device awake....

gohan040 said:
Install stock ROM and kernel. Wipe everything!!!! Data cache dalvik cache etc etc. And start without installing apps and try this for at least 3 days.... If problem is still there you probably have a faulty battery.... If not , it must be an app giving u so much drain.
Other solution is get CPU spy and check if your phone goes into deep sleep. If its not going into sleep then u have found your problem... Next is to find the app that's keeping your device awake....
Click to expand...
Click to collapse
I will try your suggestions, thanks a lot.
1. Which CPU Spy do you recommend? There are a lot of apps in the play store with the same name.
2. FYI, Using CM 10.1 and kernel, I have disabled Wi-fi, Auto-Sync, Greenified everything except Whatsapp, Facebook and Gmail, and %25 of the battery lost overnight.

jadle said:
I will try your suggestions, thanks a lot.
Click to expand...
Click to collapse
1. Doesn't really matter, as long as you can see if the phone goes into deep sleep. Try CPU spy plus free. You see all your frequencies and at the bottom deep sleep.
2. Sometimes trying to hard make thing worse and doesn't help finding the solution.
I've got the same problem and after a few days of search I found the bad app....... Widget locker kept my phone awake all day!
Deleted it and back was my battery life :thumbup:
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jadle said:
Please help!!
I'm about to lose my job. This morning my battery died (Around %30) and missed the alarm.
Running CM 10.1 Nightly 20130417
Kernel 3.4.0-perf-g85ba2bc [email protected]#1 Wed Apr 17
Please help!!
Click to expand...
Click to collapse
Try running something more stable besides experimental builds with potential bugs/leaks/drains if you have to depend on your phone in order wake up and keep your job... I'd recommend also buying a real alarm clock otherwise..