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I've got my autonootered 1.1.0 NC and it is working great. The only thing is the battery seems to be running out really fast on this. On my wife's autonootered 1.0.1, the battery isn't running out nearly so slow and we have all the same apps, although some of mine, since it's newer, may be more recent versions.
One thing I noticed is that she has very little time on "Android system", whereas 2/3 of the drain on mine is from that. The only apps that typically run though are advanced task killer and batter indicator. I regularly shut down everything else.
I've also renamed phone.apk and the telephony(something).apk on both of them as well.
Is there anything that will deep dive into "android system" on battery use? There are no rogue apps running (at least according the task killer). Or any suggestions?
First thing I'd suspect are live wallpapers followed by widgets. Verify that you have a plain wallpaper and remove any widgets that you would anticipate are doing frequent polling of any kind. I'd remove that battery indicator one and see if that helps.
Sent from my nook color using Tapatalk
Running zeam with plain nook wallpaper (just like on my wife's nook). No widgets. Am seriously wondering about the battery use thing though.
doncaruana said:
The only apps that typically run though are advanced task killer and batter indicator. I regularly shut down everything else.
Click to expand...
Click to collapse
Like I suggested, uninstall that battery indicator app. You didnt mention which one it is so for now based on the only info youve provided thats the only advice I can give.
In one test I did on my nookie froyo install I'm running, I tried a new spruced up kernel and ran a battery status widget. The widget caused the nook to stay out of deep sleep and also out of lower clock speeds when idle resulting in horrible battery life.
Are you running setcpu on either or both nooks and if so are they set the same?
Sent from my nook color using Tapatalk
Try systempanel lite task manager by nextapp in market. It might help show ram and cpu usage of things.
Sent from my nook color using Tapatalk
When not using wifi turn it off. That will save you some battery life as well.
Keep the suggestions coming
The battery app is "battery indicator". It is usually running on both nooks, but mine has a more recent version I think (this is my main suspect right now).
We always kill the wifi when not using it, so I know that's not it. Also not running setcpu on either.
I sucked down probably 5-10% while just reading with only "advanced task killer", "battery indicator", and the stock reader running for less than an hour last night.
I'm going to try systempanellite and see if that tells me anything. Also going to charge it up to 100%, boot into CMR and reset the battery stats.
If it is the battery app, wondering how to find the older version to downgrade to, or maybe just find a different one, I suppose...
45 minutes of simply reading and went from 99% all the way down to 88%. No battery utility. Systempanellite (only running for a few of those minutes) didn't really show anything sucking either.
Only other difference I can think of now is that I disabled OTA updates on my wife's nook.
I wonder if I just got a bad nook, battery wise...
doncaruana said:
45 minutes of simply reading and went from 99% all the way down to 88%. No battery utility. Systempanellite (only running for a few of those minutes) didn't really show anything sucking either.
Only other difference I can think of now is that I disabled OTA updates on my wife's nook.
I wonder if I just got a bad nook, battery wise...
Click to expand...
Click to collapse
So ~10% from about ~1 hour of use? Might be a little high for just reading, especially if your brightness is low and your wifi is off. However, I note a 10% per hour discharge with average use. I get about ~2% or so overnight loss with screen off and wifi off.
Rooted 1.1, Monster root pack. Overclocked with Dalingrin's kernel.
Looking at the two nooks, side by side, I notice that on mine, AFfileDownloadService and CloudService are background, while on my wife's, they are 'Service'. When DeviceManagerService is running, that is also background on mine and service on hers.
Could that be why the "Android system" is sucking so much battery? SystemPanel doesn't show anything sucking cpu....
I know it's supposed to be around 10 hours, but that works out to be about 7 hours reading a small, simple epub, which has me concerned.
I did lower the brightness on mine to match my wife's exactly. It was less than halfway, but heres was lower, right in between the two esses at the end of 'brightness'.
A more deliberate test shows 1% drain every 5 minutes (almost exactly) while just reading. That's a little over 8 hours and still less than I expect. Maybe I need to tweak the brightness a little more...
Curious I am, what is everyone's experiences with battery life on their NC using CM7 or any other flavor of root? I charged to 100% and have used it moderately, maybe 2 or 3 hours of constant use spread out over 1d 25min and some odd seconds and I'm at 32% battery. This use includes surfing, browsing fliki HD, and email.
Does that sound about right, better, or worse? Don't get me wrong, I am not expecting 3 days worth of battery life with heavy use, but as I've had my NC less than a week, I'm just curious as to what to expect as far as battery life.
Thanks!
Signed,
In Living Color
Sounds about right, what version of cm7? Ive been moderatley using it for the past 2 days, streaming pandora, playing angry birds rio, and facebooking.
What about a OC?
lol no lie my NC is at 32% battery to
Hrm. Either 31, or 32 I forget which. No, no OC, haven't found a need for it yet. And yeah, did the Pandora thing + Angry Birds as well. Haven't had any issues with my version of CM7 yet, so I figured I'd hold out on updating + installing to internal memory for a 'stable' release. I say 'stable' release only because even though CM7 is in RC's its plenty stable for me.
yea im running the RC and it seems the Battery life has gone way up for me.
Cool, thanks for the insight. Gives me even more to look forward to.
Been running CM7 RC4 with the OC Kernel @ 1.1Ghz off bootable SD and battery life has been very good by my book...now keep in mind, my reference point is my Droid (overclocked to 1.25Ghz), and now my Droid X (overclocked to 1.3 Ghz), both would be down to 30-40% through the course of a typical day). The NC obviously has a bigger battery, but my goal is to root 30 of these and use them as a textbook replacement/tablet pc as a pilot in our school's language art's department. They charge fast so as long as they get a day out of heavy use and can be charge overnight they are worth every penny.
i don't know why, but my nook likes to start apps on its own. Not sure how to do that. there are like a dozen apps open and i am constantly in app killer to save batt.
oh yeah, is there a wway to prevent apps from auo-launching??
bluewhite79 said:
oh yeah, is there a wway to prevent apps from auo-launching??
Click to expand...
Click to collapse
http://geekfor.me/faq/you-shouldnt-be-using-a-task-killer-with-android/
Read and learn how Android works.
I'm planning to buy Nook Color very soon, but one thing that stops me atm is battery life.
That's how I plan to use NC:
- games games games, online games included.
- surfing internet.
I thought NC can work off charge for at least 7 hours...
Qwenjis said:
I'm planning to buy Nook Color very soon, but one thing that stops me atm is battery life.
That's how I plan to use NC:
- games games games, online games included.
- surfing internet.
I thought NC can work off charge for at least 7 hours...
Click to expand...
Click to collapse
And chances are, once the bugs are worked out of CM7 so that battery drain is corrected and it correctly enters a sleep state, I'm sure it can/will.
Well, I actually meant hours with screen on while playing/surfing net. But yea, sleep mode is essential too.
Qwenjis said:
I'm planning to buy Nook Color very soon, but one thing that stops me atm is battery life.
That's how I plan to use NC:
- games games games, online games included.
- surfing internet.
I thought NC can work off charge for at least 7 hours...
Click to expand...
Click to collapse
8-10%/hr running, 2%/hr with the display off if wifi is enabled on CM7. So yes, it easily meets your requirements.
That's exactly what I needed. Thank you.
bluewhite79 said:
oh yeah, is there a wway to prevent apps from auo-launching??
Click to expand...
Click to collapse
Not sure if you read what the person below you posted, but I'll just say it here...Android has a built in task manager and using a task killer actually can make your device run slower and battery life much worse. I've had first hand experience with this with my droid.
JLCollier2005 said:
Not sure if you read what the person below you posted, but I'll just say it here...Android has a built in task manager and using a task killer actually can make your device run slower and battery life much worse. I've had first hand experience with this with my droid.
Click to expand...
Click to collapse
That wasn't the question he asked- He asked if you could stop something from launching, not how to kill it after it was launched.
CM7 RC4 Battery Life: "Just the facts, ma'am."
I can charge my Nook Color to 100%. Then reboot. Then immediately turn the screen off and let the device lay untouched for 24 hours. After 24 hours of no-touching I find my battery at 67%. I'll note that the wireless connection is not active upon unlocking the screen. It takes maybe 10-20 seconds for the wireless to reconnect. I have never, ever reset my battery statistics.
I don't have much installed on-top of CM7 RC4:
- Adobe Reader
- Google Finance
- Firefox
- Gmail
- Google maps
- NPR News
- Pandora
- Google Reader
- Rockplayer Lite
- Clockwork Mod ROM Manager
- Winamp
- Youtube
If any background process was started on the initial boot, I had nothing to do with it. That is, the process must have started automagically. I do not kill processes or applications. If I suspect something's gone badly then I always reboot to recover.
Editorial: I *-love-* CM7 RC4. For me it's stable, fast, movies play, Youtube works, etc, etc, etc. I likely would have re-gifted my Nook Color if not for CM7. I very much dislike my iPad. A lucky niece or nephew is going to be surprised with their next birthday present. ;-)
wpscully said:
I can charge my Nook Color to 100%. Then reboot. Then immediately turn the screen off and let the device lay untouched for 24 hours. After 24 hours of no-touching I find my battery at 67%. I'll note that the wireless connection is not active upon unlocking the screen. It takes maybe 10-20 seconds for the wireless to reconnect. I have never, ever reset my battery statistics.
I don't have much installed on-top of CM7 RC4:
- Adobe Reader
- Google Finance
- Firefox
- Gmail
- Google maps
- NPR News
- Pandora
- Google Reader
- Rockplayer Lite
- Clockwork Mod ROM Manager
- Winamp
- Youtube
If any background process was started on the initial boot, I had nothing to do with it. That is, the process must have started automagically. I do not kill processes or applications. If I suspect something's gone badly then I always reboot to recover.
Editorial: I *-love-* CM7 RC4. For me it's stable, fast, movies play, Youtube works, etc, etc, etc. I likely would have re-gifted my Nook Color if not for CM7. I very much dislike my iPad. A lucky niece or nephew is going to be surprised with their next birthday present. ;-)
Click to expand...
Click to collapse
I'm on nightly 98 but experience the same thing as you. Battery drains pretty quickly even when it's asleep.
Portugal. The Man said:
I'm on nightly 98 but experience the same thing as you. Battery drains pretty quickly even when it's asleep.
Click to expand...
Click to collapse
I am on N95, stock kernel, and finally have great battery life. Try using cpuspy and a paid install of system panel to find the cause of your battery drain. I see almost no battery drain when the screen is off and have about 50% deep sleep with an up time of 120 hours.
Sent from my NookColor using Tapatalk
noname4me said:
I am on N95, stock kernel, and finally have great battery life. Try using cpuspy and a paid install of system panel to find the cause of your battery drain. I see almost no battery drain when the screen is off and have about 50% deep sleep with an up time of 120 hours.
Sent from my NookColor using Tapatalk
Click to expand...
Click to collapse
I upgraded to n100 through Rom Manager, kept the stock kernel instead of using the OC'd kernel. When Rom Manager rebooted I was at 56%, I put it to sleep and have been periodically waking it to check the battery. Two hours later I'm still at 56%! Now since I changed the ROM version and the kernel, I'm not sure which one was to blame, but at this point, I'm leaving well enough alone.
edit:
Question: Say I wanted to go backwards to N95 from N100 --- would I just flash the N95 zip and then the gapps zip like a normal flash? Not that I want to right now because everything is fine, but I was just curious.
Im sure we had posts like this before. But Im stuck and need help. I was on cm7 nightly 87 with oc kernel. 5/23 and all was well. The this Saturday after playing pvz before going to sleep I put my nook to sleep with approximately 40-50% on battery and in the AM it was dead. I tought maybe I was wrong with the battery charged it to 100% flashed to 93 updated the kernel to 5-23 and played around with nook a bit, battery recolabration app, screen reco etc... Went to sleep approximately 70-80% woke up in the AM 44% just now typing this on nook went from 44 to 39% battery use shows android os 49%
I do play with new apps and maybe installed something bad but I can't figure it out. Please help
that is called PMD premature battery death.. theres a thread about it in nook android dev forum and is an issue with the current cm7
luciferii said:
that is called PMD premature battery death.. theres a thread about it in nook android dev forum and is an issue with the current cm7
Click to expand...
Click to collapse
Thanks have to research that. Why would this just start ? It was working very good before. Thank you very much for the very fast response.
The latest nightlies (91, 93, and 94A) have an experimental fix that seems to improve things.
Sent from my NookColor using Tapatalk
xxiworld said:
The latest nightlies (91, 93, and 94A) have an experimental fix that seems to improve things.
Sent from my NookColor using Tapatalk
Click to expand...
Click to collapse
Yes I installed the latest nightly and left the nook over night. I left it at approximately 11pm with around 75%-80% this morning at 7am it drop down to 57%.
What I dont understand is that I didnt have this issue for a about a week that I had the nook and had the 87 nightly on it. The battery was amazing. It just kind of happen. I will start posting in the PMD thread this is very strange. Just seems that around 30% of battery disappears if nook is a sleep for a while.
No Drain - No Pain
I'm running version 88 and have virtually no drain whatsoever. I use an app killer and shut off the wifi before shutting down each night but can have less than 1-2% drop by morning. I can go a week without recharging.
Log battery stats
CurrentWidget, available in the market, is capable to log battery voltage, percent, current, and running applications list, to a file. It is also a home screen widget. Select widget type=clear text. Edit widget and change presentation to 2 column style. With these two changes all information is shown clearly. Touch displayed data value on home screen widget to cycle display between current, percentage, or voltage. Its useful and well done.
-samovar
mrainess said:
CurrentWidget, available in the market, is capable to log battery voltage, percent, current, and running applications list, to a file. It is also a home screen widget. Select widget type=clear text. Edit widget and change presentation to 2 column style. With these two changes all information is shown clearly. Touch displayed data value on home screen widget to cycle display between current, percentage, or voltage. Its useful and well done.
-samovar
Click to expand...
Click to collapse
Wow thanks have to try this. Also will try shutting off the wifi before sleep. The issues is that I had no problems prior to Saturday, it was working flawless I would get no battery drain I would go to sleep with WiFi on no killing apps and get approximately same battery as when I went to sleep it was great. I dont get what happened.
Also like I said before in about tablet > battery use the "Android OS" now shows 41% when the battery gets drained. So some thing happens. I guess I can wipe /system /data and start over. I flashed the latest nightly this morning while the battery was on 55% (this is drain over night, as before sleep it was 77%). Lets see how it goes. And I was so happy how this thing performed !!!!!!
It was when you flash from n87 to n93 is the reason your battery is showing such different charges. the reason your are battery is draining so fast is because your nook is not deep sleeping. you can check to see if your cpu is deep sleeping or not with a free app named "cpu spy" Im also suffering from SOD and no DS.
There are 3 battery issues right now with the nook.
1) PBD, you can read about it here:
http://forum.xda-developers.com/showthread.php?t=1098178
2) SOD and no deep sleep, you can check it out here:
http://forum.xda-developers.com/showthread.php?t=1108964
There is a form in the OP to fill out. Please fill it out and help us all squash this bug.
I was still on 87 when the issue first occurred. Now I understand everything you posted and will be more then happy to fill it out and etc.. what I dont understand is how come this worked before with out any issues, with no modifications
boxcar8028 said:
It was when you flash from n87 to n93 is the reason your battery is showing such different charges. the reason your are battery is draining so fast is because your nook is not deep sleeping. you can check to see if your cpu is deep sleeping or not with a free app named "cpu spy" Im also suffering from SOD and no DS.
There are 3 battery issues right now with the nook.
1) PBD, you can read about it here:
http://forum.xda-developers.com/showthread.php?t=1098178
2) SOD and no deep sleep, you can check it out here:
http://forum.xda-developers.com/showthread.php?t=1108964
There is a form in the OP to fill out. Please fill it out and help us all squash this bug.
Click to expand...
Click to collapse
Also I never got Sleep of Death, I just got home and I`m about down to 21% from this morning 57% which is approximately 10 hours, there was some use today. I installed the cpuspy and current widget.
Cpu spy does show deep sleep 20%. I just put it on the charger and will take it of today. I did put all levers down in Nook Tweaks.
Lets see what happens. Now will report in the AM.
Today I had battery issues as well.
When I look at the battery usage, it showed
Phone Idle used 29%
Display 28%
Cell Standby 22%
Data enabled was turned on in Mobile network Settings. I turned that off and will check again. What would be using that if there is no hardware?
I had those turned off as soon as I installed CM7 few weeks ago
I've heard it explained thusly:
Phone idle = device idle
Cell standby = radio standby
Disabling those functions does nothing to increase battery life, as reported by kernel devs, though many users report otherwise anecdotally.
Sent from my Droid using XDA App
pgrunwald said:
Today I had battery issues as well.
When I look at the battery usage, it showed
Phone Idle used 29%
Display 28%
Cell Standby 22%
Data enabled was turned on in Mobile network Settings. I turned that off and will check again. What would be using that if there is no hardware?
Click to expand...
Click to collapse
Had you by any chance just rebooted the NC before looking at those stats? The only time I've seen stats that high for those processes is right after powering the NC on. At that point, you're only seeing usage statistics for the last thirty seconds, and like any statistic, the smaller the sample size, the less meaningful the data.
I was in a reboot cycle where the unit would not power on without being on the charger.
I just checked again after installing build 95 and at the top of the screen it says 15 hours 50 minutes on battery. The percentages are still the same as before.
Ok here is my report from this AM. Took it of the charger last night at around 10:45pm with 100%, rebooted in to recovery to clear battery stats, rebooted to CM7 went to wireless enabled the wifi, deleted 1 wifi network (more on that below), made sure it was connected to my home network. Pretty much it. Battery showed 99%. Woke up just now 7am, battery shows 98%. Great.
So here are my thoughts and I think I have to experiment a bit more before conclusions.
1. Nook Tweaks with DAC boost could be causing an issue, maybe a better idea to do on demand rather then set on boot (still have to experiment.)
2. (this is most likely one) I live in Long Island and we have free wifi from Optimum (cablevision) from my house there is a week signal for that SSID and some times Nook did get on it instead of the home SSID. I suspect that it was jumping between SSID and thus draining the battery, this is why I deleted that network before going to sleep.
3. N95 fixed everything that was wrong.
4. I changed wifi to sleep after screen is off, that could of helped as well.
More testing will be done in coming days.
I do have a question regarding the OC kernel and governance. I do remember having 4 options, but now I just have to 2, performance and conservative. First question which one to use ? Second question where are the 4 governance ? Why arent they showing up ?
Thank you guys.
Dalingrin found that the smart-ass and interactive governor were causing issues (don't recall what, exactly) and pulled them out. Conservative is recommended.
Taosaur said:
Dalingrin found that the smart-ass and interactive governor were causing issues (don't recall what, exactly) and pulled them out. Conservative is recommended.
Click to expand...
Click to collapse
Got it. Thanks.
I'm on n98 with the 5/23 OC kernel (I believe). I always make sure minimal apps are running, I only have the wifi/sound/bluetooth toggle widgets. Screen brightness kept to minimum needed for visibility.
I charged up to 100% at about 6pm. Put it right to sleep (no wifi or anything running) and within 10 minutes it was down to 98%. I read for about 30 minutes using Aldiko before I went to sleep and for 20 minutes on the train to work. I pulled out the Nook on my lunch break to read some more and it was down to 59%, and that is just sleeping and reading (on low brightness) for about an hour.
I always have ample opportunity to charge wherever I am, but I'm just paranoid about battery life not lasting at all even when I'm barely using the thing.
I was set to OC @ 1100Mhz on Conservative but I knocked it down to 800. I don't know if that makes a difference.
Should I go back to an older version? Go to stock ROM? I'm really only going to use the Nook to read and watch Netflix on the train, or browse some websites on my lunch break. Nothing too heavy.
My HD+ running Cm10.1 (verygreen emmc) uses 10-15% battery sleeping through a day. Battery status showing "keep awake" under "Android OS" being the largest consumer. I noticed that notifications are very alive during sleep as it beeps periodically. Is there a setting that will allow me to put everything on hold (deeper sleep?) after a certain time into superficial sleep (screen off)?
Thanks
Sean
sn4nook said:
My HD+ running Cm10.1 (verygreen emmc) uses 10-15% battery sleeping through a day. Battery status showing "keep awake" under "Android OS" being the largest consumer. I noticed that notifications are very alive during sleep as it beeps periodically. Is there a setting that will allow me to put everything on hold (deeper sleep?) after a certain time into superficial sleep (screen off)?
Thanks
Sean
Click to expand...
Click to collapse
I don't think 10-15% a day is very much... Much better than any of my android phones.. Tablet will probably last about nine days if you don't touch it. Here are my stats.. I've barely been using it.
10-15% on the Nook HD+ is actually quite a bit.
I leave wifi off and might lose 1% over 24 hours, sometimes no loss at all.
something is draining it.
I think this should fare better than phones because (1) there is no constant-on cellular radio, and (2) it has a much larger battery. When screen is off the power consumption should be comparable with a phone with similar cpu/mem minus the radio. so more juice and less consumption = longer standby.
In any case, I am looking for settings/config that will, e.g. turn wifi off after screen is off, and perhaps freeze the running apps. I suppose such controls exist, but I could not find anything in the "settings" ...
On a related note, How did many apps mange to run themselves without my consent? I used ES task manager to disabled many programs from the start-up list, but some apps (some not even in the list to begin with) would be appearing in running apps list from time to time even though I am sure I did not start them after a reboot. Facebook and Youtube seem always running; some games also do that. I would kill them, and a while later they would be running again. Is it possible to really prevent apps from starting by themselves?
Sean
10-15% is horrible. I don't know what phones you have but none of mine are near that bad. As for a tablet that is doubly bad and on this one in particular since it has no cell or gps radio. If you check my SIG you will see I've personally owned several tablets and I can assure you not even one of them nor the six or seven more owned by other family members I play with have lost so much during sleep cycle. At 15 percent you would only get 6 and a half stand by days lmao. No this is a matter of inefficient kernel controls.
agreed 10-15% is completely out of character for the Nook HD+ .more like an app sucking the power or that particular build.
The Nook HD+ is one of the most efficient tabs in existence for deep sleep mode.
which build are you running?
pdx1138 said:
agreed 10-15% is completely out of character for the Nook HD+ .more like an app sucking the power or that particular build.
The Nook HD+ is one of the most efficient tabs in existence for deep sleep mode.
which build are you running?
Click to expand...
Click to collapse
Cm10.1 verygreen emmc 0712 (was on 0719 but had spontaneous reboot problem so flashed back).
We have another HD+ running stock, and that one has much better standby time. I've installed the same launcher and pretty much the same apps (both are on the same google account).
I'm not with the HD+ now, but basically, "Android OS" and "Google Service" each uses 30% of the power, while the rest are much smaller. So I could not pinpoint an app as culprit.
I do have location service enabled; maybe GPS as well (would that make a difference?). Email is set to check every hour.
How do I make wifi off automatically off while sleeping? (Wifi is not even a big consumer in the list though.)
Sean
I'm having serious battery issues that just started out of nowhere. I'm currently only getting about 4 hours of light use before having to recharge.
I'd like to look at what apps are using the battery but there are only 5 apps listed and they add up to only 27% (the highest is screen at 12%).
Phone is not rooted and I haven't loaded any new apps recently.
I noticed this as well. I used to use Better Battery Stats when I was rooted, so I didn't know if it was normal to act this way or not. Sounds like it isn't.
Currently having the same issue. Seems like my battery started tanking right around Christmas. I got a Huawei watch and originally suspected that but turning it off and leaving it home for a day didn't seem to help. The battery stats on the S6 are garbage and I can't track down what is going on.
Been noticing the same issue on my G920A. I tried doing a cache clear, but that doesn't seem to have helped. I went through all the running apps and services to try and find anything that could be eating the battery, but nothing seems to be reported that adds up to the amount that's getting eaten.
I use greenify for handling the hibernation of apps when they don't seem to act right by themselves, but since the phone isn't rooted, I have to manually run this operation - and that really doesn't help much anyway. Figured I'd add my experience to this thread just as a means of documenting the situation.