Database Develop

Battery life worse after FRF83

Ive noticed a significant decrease in battery life ever since i updated my phone to FRF83. I can leave it on at 100% and it drains down to 75% or even lower the following morning. It usually drains no more than 10% if i leave it running overnight.
I dont have any apps running in the background, and my task killer is set to auto kill 3 mins after screen blankout. Auto refresh is, and has always been on since the day i got the phone though.
I manually updated to FRF85B and the battery life is still as bad as ever. Ive never gotten this problem with android 2.1 or any of the earlier froyo builds. Someone care to tell me whats wrong? Ive heard others reporting that their battery life has increased after updating to froyo, why am i getting the opposite?

I have this issue because of my exchange server.

Ive never set up and exchange server on my phone. The only constant apps that should be auto syncing are gmail, calander and twitter, which is set to refresh once every 1 hour.

Same for me, battery life sucks lately.

Mokurex said:
Same for me, battery life sucks lately.
Click to expand...
Click to collapse
Then there are people reporting that their battery life has increased after updating to froyo. In fact mine was ok at first, until i started using FRF83 onwards then it all started to go downhill. This morning i woke up with the battery at 44% when i last saw it, it was at 90% the night before. It drained that much overnight and its not supposed to happen!

Mine was very good since updating to froyo ( starting from first builds leaked). Its very good now too, better than before anyway. I used to run of juice by 9PM, now i have ~ 20% left with the same usage.
Check out what apps are consuming the battery, i got terrible batt life when i tried the droidx live wallpaper.

App usage are the usual stuff.
Display being the highest, followed by android system, then cell standby, phone idle, twitter, android OS, launcher pro..etc
something seems to be sucking up my battery and i dont know what

I'll be the first one, I guess - I blame the task killer. It's widely known that you shouldn't need a task killer, unless you have some rogue app.

EarthsiegeTA said:
I'll be the first one, I guess - I blame the task killer. It's widely known that you shouldn't need a task killer, unless you have some rogue app.
Click to expand...
Click to collapse
But if your task killer is set to auto-kill on screen-off, even if various apps restart then that should only be in the first few minutes and shouldn't reduce the battery that much.
I have taskiller installed but only for manual killing of problem apps (a rare occurrence) and I have noticed poor battery life since moving to FRF85b - didn't notice anything of the sort in the Froyo versions before 85b though.

Well i just uninstalled task killer, i'll leave the phone running overnight again to test the battery again. But from the looks of it. It seems battery life has improved slightly, but it could be just me.
drewstiff said:
But if your task killer is set to auto-kill on screen-off, even if various apps restart then that should only be in the first few minutes and shouldn't reduce the battery that much.
I have taskiller installed but only for manual killing of problem apps (a rare occurrence) and I have noticed poor battery life since moving to FRF85b - didn't notice anything of the sort in the Froyo versions before 85b though.
Click to expand...
Click to collapse
Yeah thats true. It shouldnt suck up that much battery cos it only kills apps once. It could be an issue with the task killer causing it to drain the battery, because after uninstalling it i think the battery lasts a little longer. But i'll leave it running overnight again to confirm.

My quick story:
- frf72 and earlier - about 12 hours battery life for me. Used task killers, 2 emails on push. WiFi, BT off. Also tried juicedefender and setCPU. They made my battery life even worse.
- frf82+ (now frf91). Read up on how Android manages tasks and power. Got rid of all the task managers, setCPU and JD. Only use OSMonitor every once in a while to see if any dumbass app using up CPU in wakelock. So far none.
- EVERYTHING is ON. Wifi, BT, GPS - always on. I never use 2G, it's always 3G/HSDPA. GMAIL on PUSH, Exchange PUSH or 10minutes (no difference in battery for me)
- After a 24-hour test (from which 8 hours were on standby at night) I lost 80% battery life, so 20% still remain.
My advice: uninstall anything like setCPU, JD or taskkillers. Let Android handle that. Install OSMonitor and make sure nothing's in wakelock. Wipe cache if you want. If you're not getting 18-20+ hours, perhaps time to calibrate ur battery.

Thanks for the tip, just installled OSmonitor. The interface is pretty messy! But at least i understand whats going on. So all i need to do is keep track of which apps are at the highest load?
Is it really necessary to kill unwanted apps (Twitter, goggles, gmail..etc) because they are taking up RAM to improve battery life while idling?

OR you could just take Paul's advice and not use a task killer. My money is on him =)
FAQ: Why You Shouldn’t Be Using a Task Killer with Android

Wow thats a very informative read! Thanks for the link. I too also thought that an unwanted running task means i need to kill it to free RAM in order to speed things up and improve battery life. Didnt know im actually doing it harm.
Looks like i'll ditch my task manager for good and have faith in the OS.

Using LauncherPro Beta? I think some battery issues have been traced back to the way LP is handling updating widgets right now. Hoping for an update to fix it soon.

Well guess what. I just used the phone for an entire day and left it on since last night. It dropped down to 25% when i got home and was about to replace the battery pack. So it looks like task manager was the cause of the problem.
Launcherpro doesnt seem to be affecting the battery life.

cr0wnest said:
Well guess what. I just used the phone for an entire day and left it on since last night. It dropped down to 25% when i got home and was about to replace the battery pack. So it looks like task manager was the cause of the problem.
Launcherpro doesnt seem to be affecting the battery life.
Click to expand...
Click to collapse
Well it won't show up in the battery usage as affecting the battery. It has something to do with the widget updating not launcherpro. I removed BBC News, Beautiful Widgets and my Battery Info widget and my battery is now holding steady.
I'd be interested if you'd run an experiment, remove all updating widgets, notification widgets, etc and try again.

[Q] Battery use

Howdy folks.
I'm running a nook color that has been rooted with the auto-nooter 3.0
Lately, I've noticed that the battery has been discharging MUCH faster than it used to. I used to be able to go a couple of days without charging with moderate use.
Last night I went to bed after having fully charged the NC and I got up today to only have 42% of the battery left.
I've poked around in the nook color tools, but I'm pretty much a noob so I didn't see anything I could fix.
Any ideas on how I can improve the performance?

Oh, and the biggest culprit in the battery use details was the "Cell Standby" at 65%

Sounds like you nook isn't going to sleep properly. Maybe a rogue app is running in the background preventing it from sleeping properly.

How could I find a rogue app?
I've gone into the nook color tools and I'm looking at the running services. There's couple of possible culprits here.
com.bn.cloud.svc -- I'm guessing this has something to do with the nook ereader.
Aldiko has "ImportDEBookService" running.
I've looked under the manage applications settings and I don't see anything fishy.
Any other places I can look?

[Q] Froyo 2.2 - Change in Battery Performance?

Before, I was running a stock 2.1 Eclair, with a Voodoo LagFix, and LauncherPro (using all 7 screens with widgets). My battery then, would last all day, easily, as long as I wasn't using GPS. I had all my email settings, and widget settings to update EVERY HOUR. For a smart phone, with many widgets running and lasting all day, it was wonderful.
Fast forwarding to now: I updated to the new Froyo 2.2, and re-installed all the apps I previously had, along with the Voodoo LagFix for 2.2, LauncherPro (still using all 7 screens with the SAME widgets) and set all of my applications (that do need updating) to update EVERY HOUR. Now, I literally sit back and watch the battery percentage just drop. Ex. My battery was at 97%, but after writing this, it's now at 93%. In about 2 minutes....what the hell?
Has anyone else noticed a change in your battery performance? I've downloaded the OS Monitor to see if anything new has been added, and that's draining the battery, but there is nothing showing that wasn't before. I'm wondering in there is something new that was added, which is running in the background. Ideas?

JDM9499 said:
Before, I was running a stock 2.1 Eclair, with a Voodoo LagFix, and LauncherPro (using all 7 screens with widgets). My battery then, would last all day, easily, as long as I wasn't using GPS. I had all my email settings, and widget settings to update EVERY HOUR. For a smart phone, with many widgets running and lasting all day, it was wonderful.
Fast forwarding to now: I updated to the new Froyo 2.2, and re-installed all the apps I previously had, along with the Voodoo LagFix for 2.2, LauncherPro (still using all 7 screens with the SAME widgets) and set all of my applications (that do need updating) to update EVERY HOUR. Now, I literally sit back and watch the battery percentage just drop. Ex. My battery was at 97%, but after writing this, it's now at 93%. In about 2 minutes....what the hell?
Has anyone else noticed a change in your battery performance? I've downloaded the OS Monitor to see if anything new has been added, and that's draining the battery, but there is nothing showing that wasn't before. I'm wondering in there is something new that was added, which is running in the background. Ideas?
Click to expand...
Click to collapse
Yeah, because 2.2 charges differently. 2.1 will charge all the way up to 4.3V whereas 2.2 will only charge up to 4.0V (sometimes a little higher). So the initial drain seems faster, but once you get to about 80% it is the same.

Yeah, I agree with what @ryude posted. Mine went from 100% to 95% rather quickly yesterday but it stayed at about 95% for a while. I went to bed with around 48% and when I woke up (about 6-7 hrs), it was about 40%. So the battery life seems slightly better. BTW, I'm running stock with LauncherPro.

Thanks for the heads up. I'll keep an eye on it. I was just wondering if others have experienced any similarities and if it was just something normal (as mentioned above) or if there is some new function running in the background by default which is draining the battery. Cheers.

I'm actually noticing an improvement in battery performance, with everything on my phone being equivalent pre-update to post-update.
No lagfixes or anything like that installed, though.
Sent from my SAMSUNG-SGH-I897 using Tapatalk

Screen on 0% brightness uses about 400 mW and on 100% brightness uses almost 1000mW. I've seen CPU usage spike over 400mW but usually stays around 100mW. Wifi uses about 50mW when on and 10mW in low power state (screen off).
So those are the big 3 power drainers right there.

If you did not put the update on at 100% you might have a problem with the battery stats a simple way to fix that on stock would be a complete drain on the battery
Sent from my SAMSUNG-SGH-I897 using XDA App

Ok, here are a couple things I have found thus far.
One - After installing the Voodoo LagFix for 2.2, and rebooting into recovery mode, I was actually booted into ClockworkMod - Voodoo Lag - Recovery Mode. That's something new. Anyways, there is an option to "clear battery stats". After briefly reading about this on another thread here on xda, the individual said it's a must to do. I'm not sure if this is because of the Voodoo Lag Fix or what, but I did it and will report back at the end of the day.
Two - This is something new in Froyo 2.2, and it was never an option in 2.1. After going into Settings - Location and Security - and un-checking "Use wireless networks" and the re-checking it, it says "Location Consent - Allow Google's location service to collect anonymous location data. Collection will occur even when no applications are running." That right there could be the reason why the Maps app is constantly running? I turned it off, which I have never done and have always left on, but will see if this makes a difference as well.
I'll report back with results tonight.

I've had a similar issue. Updated from an unrooted, untouched stock eclair to the new stock froyo release, left it charging overnight and today not only was the battery dead in less than 6 hours, but the phone had used all of the data from my limited data plan. I have not installed anything and never had a launcher or any other thing of the sort. No lagfix, nothing.
Now I went with a factory reset, since that is clearly recommendable after any os installation (or before actually) and will see how it goes from here...
Also, the phone would not recognize my sim card at times, so I'd have to reboot to get it working, sometimes more than once... That, however, seems to have been solved with the factory reset...
Sent from my SAMSUNG-SGH-I897 using XDA App

I had massive drop from around 45% to under 10% in an hour last night. I figured it was a glitch after the upgrade so I did a full charge with the phone on, then powered it off. "full" charge powered on turned out to be around 95%, the remaining 5% charged while it was off.
After doing that and then powering back on, I've found my battery life today (first full day after update) to be pretty good so far.

JDM9499 said:
Ok, here are a couple things I have found thus far.
One - After installing the Voodoo LagFix for 2.2, and rebooting into recovery mode, I was actually booted into ClockworkMod - Voodoo Lag - Recovery Mode. That's something new. Anyways, there is an option to "clear battery stats". After briefly reading about this on another thread here on xda, the individual said it's a must to do. I'm not sure if this is because of the Voodoo Lag Fix or what, but I did it and will report back at the end of the day.
Two - This is something new in Froyo 2.2, and it was never an option in 2.1. After going into Settings - Location and Security - and un-checking "Use wireless networks" and the re-checking it, it says "Location Consent - Allow Google's location service to collect anonymous location data. Collection will occur even when no applications are running." That right there could be the reason why the Maps app is constantly running? I turned it off, which I have never done and have always left on, but will see if this makes a difference as well.
I'll report back with results tonight.
Click to expand...
Click to collapse
The location consent prompt has always been there since eclair and is part of how google collects data on locations and cell towers. Like you said, it pays to turn off unless you're using the maps or other location dependent app.

Milestone RC4 CM7 nadlabak draining battery FAST

Hey guys,
I'm running the latest release from nadlabak, 04.10 one.
I experienced battery issues on some previous releases as well, however i don't know if it's this release or what, but the battery usage is draining very fast!
I am not really running anything, I have liveprofile auto memory manager, and handset sms. liveprofile doesnt even really run, i barely use it so it should be either in the background or not running.
i looked at the battery usage stats, it shows email is using about 40% of the battery draining.
my phone is VERY warm, feels like the cpu churning through something... i can run at 52vsel with 1000mhz vrate. fine and still my battery is about 40% after 2 hours.
I reset to factory clock speeds and it drains the same if not faster!
not sure what's going on but its driving me nuts, google maps also shows to be running in the background, however i never turn it on, i reboot my phone, leave it as is and it shows maps is using 10% battery usage roughly when i havent even initiated it to be running(unless it always has a service in the background?)
i had releases from march that ran better, about 8 hours of battery life. and i believe even a april release was working fine. but now this latest release especially seems to suck up the battery, i dont know if its the releases or if something else has changed...but its very annoying holding a very WARM phone and having the battery get sucked up in 3 hours.

Looking at spare parts, does it sleep at all?
40% usage from email is high so something is wrong there but I doubt it's CM7.
Also, what AMM settings are you using?

Hi there, I'm running the following:
vmheap 40mb
amm: 6, 13, 24, 40, 51, 63.
any suggestions?
where do i find out if it sleeps, im in spare parts.

In Spare Parts, the first item is Battery History.
Go there and it will show how long your battery has been running (%) since unplugged.
If you select the top drop down list, select Partial Wake Usage to see which apps might be keeping the phone awake.
Where did you get those AMM numbers from?
I'd suggest my Balanced 3 (6-8-26-28-30-32) for a nice mix of free memory without being overly aggressive on the background apps.
If you use any of my scripts, disable AMM from having superuser permissions.

I had gotten the stats from another popular thread on this forum.
ill try your stats as well.
vmheap still 40?
also i still notice email is the one that has a huge bar graph usage on the partial usage stat page. not sure why email is being kept awake..
should i factory reset?

have you wiped cache/dalvik? If not do that.
Sent from my Milestone

I had wiped the caches multiple times, tried a lot of things, everything accept a factory reset.
I did a factory reset for the hell of it, set the amm settings as requested vmheap to 40.
everything seems to be running smooth and fine at 1000mhz 54vsel
and the battery usage is at 90% while being unplugged for 7 hours, will monitor to see if the usage drops substantially later on in the night but so far i think things may be fixed.

Battery usage is nearly constant.
That's not good at all.
Something is keeping it away.
What does spare parts show now for partial wake apps?

The partial usage is like 5% now vs what was like 50%. and email isnt even probably 2%. handcent sms is taking up the 5% roughly.
its at 80% after being on battery for 8 hours 26 mins. and i have probably used it for about 30-45 mins worth of on screen time, rest idle.

Oh wait, I think I misunderstood.
You meant that you had 90% left and only 10% used up, right?
If that's the case, that's pretty amazing.

I have expirienced that if I haven't done full wipe(factory reset) my battery is drainin like a crazy. That's happing in all roms I have used. So my opinion is to apply any update or now rom on clean Milestone

how to delete apps in android
i have recently started using android on htc hd2.. i am bit annoyed with the fact that i could not unistall a few apps which i am never going to use. eg liveprofile..and it keeps starting automatically
so could anyone tell me how to remove such apps?

battery issues

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.