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.
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.
I've purchase and used this to get 'regular' android onto my HD+
http://www.youtube.com/watch?v=DBZtWXYWX7M
I'm really pretty happy with it with the exception of two things.
Strange Wifi behaviour.
The WiFi seems to go off after the screen has been asleep for 10 - 15 mins. As a result, I don't get any emails when the screen is off. This does not happen on my ipad3 or my Nexus 7. Is this normal for this Nook?
Battery consumption.
I'm getting around 6 to 6.5 hrs of battery life with the brightness on 20% or so.
The strange thing is that Wifi and Tablet Idle seem to be consuming far more power than the screen. The attached pix were taken when the screen-on time was around 3 hrs.
On my Nexus 7, the Tablet Idle and Wifi seem to consume far, far less power than the screen. Can anyone suggest what's causing this?
Other than these problems, it's fantastic to use this tablet with stock android (or as close as this version is!). I really feel that it's a very under-rated and frequently over looked. I wouldn't touch it with stock B+N junk on it though!
I also posted this on the "htcone" subreddit:
I'm currently using CM 11, which is not yet stable on HTC One M7 GSM (currently on "snapshot"), and the battery life just kills me, so inefficient. I have an external 16,800 mAh battery and it does a good job eating through that too. 20% from that will give me 30% on the phone if the phone isn't powered all the way off -- that seems like a lot of usage (even if that external battery is used and only half that capacity now). I take measures to help my battery like auto brightness, turn off mobile data or wifi depending on what I'm using, or both to really save, I'm usually on silent, no bluetooth ever, location services always fully off unless I'm driving (rarely) etc. Just being in my pocket with a couple of hours or so total streaming music over LTE during the day the thing is under 20% after around 8-10 hours. A few days ago just a couple hours of music streaming (some downloaded some mobile data, not sure how much of each but still; this was not "screen on" time either) and an hour of web browsing ate 70% of it. It was 100% when I unplugged it around 6:30am and shy of 30% around 11am -- jeez!
I have been starting to think my battery is just worn out, I mean the phone is 2 years old (contract ends a week from tomorrow; it really is). But, what if it's the non-stable CM 11? Maybe a different ROM would help? I don't remember it being like this back on the stock ROM but it's been a while since then, and I remember being kinda frustrated with battery life every since I switched but I never got around to messing with this until now when I am even more irritated. I'm due for an upgrade, but squeezing some more life so I can wait another couple of months to see what unfolds (or change my mind entirely) would be great.
Can someone suggest some more efficient ROMs? I could handle Sense but I prefer AOSP -- whatever gets me more juice though. Or feel free to suggest other possible problems/solutions as well. In my power options in settings where it shows power usage, screen is always at the top with around 30%, so nothing jumps out there either. Thanks for any and all time!
jtaylor991 said:
I also posted this on the "htcone" subreddit:
I'm currently using CM 11, which is not yet stable on HTC One M7 GSM (currently on "snapshot"), and the battery life just kills me, so inefficient. I have an external 16,800 mAh battery and it does a good job eating through that too. 20% from that will give me 30% on the phone if the phone isn't powered all the way off -- that seems like a lot of usage (even if that external battery is used and only half that capacity now). I take measures to help my battery like auto brightness, turn off mobile data or wifi depending on what I'm using, or both to really save, I'm usually on silent, no bluetooth ever, location services always fully off unless I'm driving (rarely) etc. Just being in my pocket with a couple of hours or so total streaming music over LTE during the day the thing is under 20% after around 8-10 hours. A few days ago just a couple hours of music streaming (some downloaded some mobile data, not sure how much of each but still; this was not "screen on" time either) and an hour of web browsing ate 70% of it. It was 100% when I unplugged it around 6:30am and shy of 30% around 11am -- jeez!
I have been starting to think my battery is just worn out, I mean the phone is 2 years old (contract ends a week from tomorrow; it really is). But, what if it's the non-stable CM 11? Maybe a different ROM would help? I don't remember it being like this back on the stock ROM but it's been a while since then, and I remember being kinda frustrated with battery life every since I switched but I never got around to messing with this until now when I am even more irritated. I'm due for an upgrade, but squeezing some more life so I can wait another couple of months to see what unfolds (or change my mind entirely) would be great.
Can someone suggest some more efficient ROMs? I could handle Sense but I prefer AOSP -- whatever gets me more juice though. Or feel free to suggest other possible problems/solutions as well. In my power options in settings where it shows power usage, screen is always at the top with around 30%, so nothing jumps out there either. Thanks for any and all time!
Click to expand...
Click to collapse
I get the best battery life from Android 4.3 Sense 5.5
InsertCoin HTC ONE v8.1.3 >> http://insertcoin-roms.org/category/devices/one_m7/one_sense5/
It's also not real bad on AT&T Stock 5.12.502.2
I unplug the phone at 6AM and take it to work, normal use txt a few calls some web and emails and I have around 50% battery left when I get home at 3:30. On heavy use days I have about 30% when I get home. I should note my phone is also going on 20 months old.
i installed android 7 on a nook hd (7") and ran it for about 2.5 months. As soon as I installed it I could feel the battery area was warm to very warm. It continued to be like that for the 2 and a half months I had it on there.
With android 7, I would get about a day of use off a full charge. I could watch the battery % drop as soon as it was unplugged from the charger. I kept the wireless off and airplane mode enabled most of the time to try to get more life. I could get about 2 hours if surfing the web on wifi.
finally it started jumping the brightness to 100% and wouldn't let me adjust it downward (only happened on certain web pages - still worked fine for reading books, but I had to reboot and reset the brightness every time.
I uninstalled android 7 and went back to stock nook 2.2.1 and my problems vanished. Battery life is back, it took me about 2 hrs to download and reinstall 2.2.1 and I had the nook on and wireless enabled the whole time and the battery never got hot and battery is still at 97%. With android 7 I'd be in 60's by now if not 40's.
I liked being able to install Brave browser and a couple apps, but I hated the android 7 keyboard, and the whole thing was sluggish, so I'd wind up tapping and retapping and getting 2 or 3 extra tabs opened that I didn't really want...
I'm gonna run stock for a week or so and make sure everything is fine and then try CM11 and see if will run better.
I really like the nook for reading books I've got a Kindle oasis and I like the nook better. and the 9" hd+ is great for reading .pdf manuals while working on things without having to have a laptop around.
only wish there was a way to strip the google out of the Nook. android isn't an operating system, its a retailing app...
anybody got a version of android they like that isn't so hard on the battery and not so sluggish???