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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.
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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...
I've searched around both the web and forum, but haven't been able to find any means of removing the Nook library bar from the bottom on the stock ROM.
I keep tapping it, when what I really want to do is, opening the apps menu.
I'm currently running Nookie Froyo, but have since been made aware of the battery overcharge "problem" with that/other ROMs, and would therefor like to go back to stock, so something doesn't go up in flames
Can anyone point me in the right direction?
First, Checkout Zeam launcher. It has a full screen option, that gets rid of the BN bar. You lose your notification bar, too though. Perhaps that in conjunction with another app to recover notification bar might work?
Second, overcharge issue?
1. Ok, I admit I have not tried Zeam, but I'm really hooked on Launcher Pro, and would like to stay with that.
I was basicly asking for a way to mod the stock rom, so I gets a normal Android feel to it (including a normal notification bar).
2. About the battery overcharging/overheating thing, I'm refering to is from this
As I can't post URLs yet, because of low post count, but if you search for:
Nook Color Froyo Hack Is Mind-Blowing--Literally
Click to expand...
Click to collapse
you'll find it for sure.
To quote from the article:
An unmodified Nook Color will shut down if it believes that the battery is getting too hot. If you install Froyo, the Nook recognizes it, but it'll shut down immediately. To get around this, Jesse disabled Android’s batteryservice, the software component that monitors the Nook Color's battery temperature. This means that the Nook Color's battery could overheat (thus damaging the unit), or worse--explode--as a result as this mod.
Click to expand...
Click to collapse
I seen anywhere that this hack isn't necessary any more, but I'd like to be corrected.
The thing that makes me think that this has not been fixed yet, is that the charging is a bit weird on my NC with Nookie Froyo 0.6.8.custom.3 eMMM.
I left it to charge over night, and in the morning the chargemeter on the lockscreen still said 58% + the N on the charger cable was still orange.
When I unplugged it, it remained on 58% till some power was used and it increased/decreased to 99%.
Has anyone else experienced this behavior when charging on Froyo?
Bitcrusher_ said:
1. Ok, I admit I have not tried Zeam, but I'm really hooked on Launcher Pro, and would like to stay with that.
I was basicly asking for a way to mod the stock rom, so I gets a normal Android feel to it (including a normal notification bar).
2. About the battery overcharging/overheating thing, I'm refering to is from this
As I can't post URLs yet, because of low post count, but if you search for:
you'll find it for sure.
To quote from the article:
I seen anywhere that this hack isn't necessary any more, but I'd like to be corrected.
The thing that makes me think that this has not been fixed yet, is that the charging is a bit weird on my NC with Nookie Froyo 0.6.8.custom.3 eMMM.
I left it to charge over night, and in the morning the chargemeter on the lockscreen still said 58% + the N on the charger cable was still orange.
When I unplugged it, it remained on 58% till some power was used and it increased/decreased to 99%.
Has anyone else experienced this behavior when charging on Froyo?
Click to expand...
Click to collapse
Yes, I'm on Eclair (stock) but I noticed my battery charge report takes a while to update after a charger. Though my cable does turn green when expected.
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.
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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. ;-)
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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.
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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.
Ok guys\gals, I have a question that I haven’t seem to find. Right now I’m using CM7 stable on my Nook emmc drive and it works great (Special thanks to all Devs in the Android world that make all is possible). Me and the family are going on vacation at the end of next month and I’m little concerned about battery life on a 5 hour plane ride with my Nook. I know of the sleep bug that CM has and everyone has been working on it but right now I get about day use out of it with normal to heavy use. This is fine because I’m always somewhere I can plug into if the power starts to get low, but now have a little concern since won’t have power. I have successfully converted a few movies using Handbrake and would love to use my nook as entertainment\movies for me and the family while in the Air. So in my testing I haven’t been able to get through a few 2 hours or so movies without the power draining down fast.
Ok with all that being said, it’s my understanding is that the stock ROM with root (Nooter 3.0) works great with Video and has good battery life. Would it be idea for me to just restore to a stock rooted Rom, then create a CM7 SD-Card? The cm7 card would be for my use only till we great back from Seattle. Mainly I’m just trying to keep the kiddos happy since they have never been on a plane before LOL. They LOVE all what my little Nook can do and love watching movies on the bigger 7 in screen (Transformers is Awesome on the Nook by the way). Any suggestions would be great.
Thanks Guys\Gals…
Derek.
Yes, what you propose will work.
I actually have a dualboot on my NC with CM7 as a primary boot; and the stock (rooted) on the secondary partition. (you can follow the dualboot thread in the developer section).
However, while you are actually USING the NC, the battery life shouldn't be terribly different between CM7 and stock. The biggest difference in battery life is while in "suspend" mode, because CM7 doesn't go into as deep of a sleep mode as when in suspend while in stock; so if you are willing to actually power down the NC, rather than suspend, you shouldn't experience any additional power drain while on CM7.
If you still have significantly more power drain on CM7, it is probably because you are overclocking. I have found that shutting wifi off when not being used, being conservative in the screen brightness, and adjust the the processor tweak in the cyanogen settings to "conservative" will help with battery.
All of that being said, I hope to get an external USB battery the next time I need to fly ....
My Nook, running CM7 Stable with screen brightness at 100% and wifi off, uses about 18% of its battery life for every one hour of full-screen video that I watch (.avi files, Rockplayer, mostly). The times that I've flown with it (only once since installing CM7) I usually watch an hour or two of video with internal battery then plug in one of those Duracell rechargeable batteries that you use with a USB cable to power portable devices. Using the rechargeable with a Nook-specific cable (in case that helps) my battery drain per hour of video drops to 10%. On night flights both rates improve somewhat due to much lower brightness levels. Plus, if the Nook is plugged in but inactive (powered on or off) it'll ADD charge 5-10% per hour. One charged 750MAH battery (half the size of a deck of cards) and I'm good for at least 8 hours of heavy use (could go longer, that's the most I've needed).
As jasoraso mentioned, you're really not going to get much better life while using it, if you switch to Stock. Cm7's battery usage is only when usage is suspended as it can't go as deep into sleep as the stock os can.
So even if you move back to stock, you're not going to get better life while watching videos. Your best option would be as both posters before me mentioned, an external charger.
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