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[Q] Battery loss 25% over night (8 hours), normal?

I disconnected my phone from power when it was at 100% before going to sleep. This morning 74% of power was left (after 8 hours).
"Cell standby" ate 40% and "phone idle" 35%. I'm in 5 bar coverage area. Is it normal?

artisticcheese said:
I disconnected my phone from power when it was at 100% before going to sleep. This morning 74% of power was left (after 8 hours).
"Cell standby" ate 40% and "phone idle" 35%. I'm in 5 bar coverage area. Is it normal?
Click to expand...
Click to collapse
i dont think so. i use almost no battery overnight unplugged with not so good coverage. im running stock atm.

I also use about 35% overnight. I started to systematically uninstall recent apps with no change so far. About 5% drain/hour. Weird stuff but also intolerable

fldude99 said:
I also use about 35% overnight. I started to systematically uninstall recent apps with no change so far. About 5% drain/hour. Weird stuff but also intolerable
Click to expand...
Click to collapse
What is top battery consumers for you?

Display is at like 36% when I get up in the morning, even though the phone has been idle all night. Then android system is like 25%

fldude99 said:
Display is at like 36% when I get up in the morning, even though the phone has been idle all night. Then android system is like 25%
Click to expand...
Click to collapse
Probably different issue then mine. You probably have some reminders or someting lighting up screen or something at night.

artisticcheese said:
I disconnected my phone from power when it was at 100% before going to sleep. This morning 74% of power was left (after 8 hours).
"Cell standby" ate 40% and "phone idle" 35%. I'm in 5 bar coverage area. Is it normal?
Click to expand...
Click to collapse
More info needed...Stock..rooted & custom rom?
Mac

Mac11700 said:
More info needed...Stock..rooted & custom rom?
Mac
Click to expand...
Click to collapse
Stock, rooted.

artisticcheese said:
I disconnected my phone from power when it was at 100% before going to sleep. This morning 74% of power was left (after 8 hours).
"Cell standby" ate 40% and "phone idle" 35%. I'm in 5 bar coverage area. Is it normal?
Click to expand...
Click to collapse
Did you recently perform a flash (to a new ROM, a different one, or flashed back to stock JF6)? If you did, you'll need to condition the battery.
If not, you probably have some background apps that run all night.
EDIT: Ooops, nevermind.

RexEscape said:
Did you recently perform a flash (to a new ROM, a different one, or flashed back to stock JF6)? If you did, you'll need to condition the battery. If not, you probably have some background apps that run all night.
Click to expand...
Click to collapse
I did not recently flash anything. I do have a bunch of background apps but if they were consumers they would show on a list, is not it. It would not be "phone idle" and "cell standby".

I'm in a similar boat. Ill drop around 20% within two hours. Display time is less than 30 minutes. Display down low. email fetching off. Running cognition 2.3 Tom
I've got a new battery on the way from att warranty.
Is it worth trying cpuset and tweaking?
Hope your battery life improves. I hate the mid day charge

Any chance you have wifi on? When I was running stock I would only lose a few percent overnight with it off. With it on though I would lose 20%+ easily.

Wifi uses battery more than 3G? In any event, without hijacking the OP's thread-I turned off wifi and it still uses about 5%/hour sitting idle with the screen off and locked.
However, what I did this morning: When arriving at my office-all I did was turn off something called "animation" in the display settings. I have no idea what you miss with animations turned off, but in about 3 hours of sitting idle, wifi on, I've only lost 2%. Not sure if I'm onto the problem..but will let it go another couple hours to check..then I'll turn the animations on again to see if that does anything.

fldude99 said:
Wifi uses battery more than 3G? In any event, without hijacking the OP's thread-I turned off wifi and it still uses about 5%/hour sitting idle with the screen off and locked.
However, what I did this morning: When arriving at my office-all I did was turn off something called "animation" in the display settings. I have no idea what you miss with animations turned off, but in about 3 hours of sitting idle, wifi on, I've only lost 2%. Not sure if I'm onto the problem..but will let it go another couple hours to check..then I'll turn the animations on again to see if that does anything.
Click to expand...
Click to collapse
I actually enable WiFi during sleep instead of 3G since according to posts here WiFi is using less power then 3G.

Thats what I thought..so turning off wifi is obviously not going to help battery life if you have a 3G signal. I don't know..I'm just killing one app at time but its tedious. May just do a factory reset-ticks me off to see the battery drain on a device that's already hard on the dam battery to begin with

I have started using cpu tuner to underclock my cpu when im not using it. Doing wonders so far. I am at 40% and have been using my phone normally for 10 hours 36 minutes
Sent from my SAMSUNG-SGH-I897 using XDA App

Woo first post--
Turning all data connections off will vastly boost your battery life. Not just WiFi but also 3G. On the stock Captivate you can do it by dialing *#*#4636#*#* > Phone Information > (Hit Menu button) > More > Disable Data Connection. Also check for SYNCing, stuff like Facebook, Twitter and Google syncing takes up a lot of juice since it repeats so often. I turn mine off unless I know I need real-time updates on a given day. On top of that, just keeping background apps from drawing CPU (i.e. having task manager to kill the ones that you KNOW keep running even though they're in the background) will help. I got ~24-36hr out of a charge through these three practices.
The next step for me personally was rooting the phone and taking out all the AT&T bloatware. This stuff loves to run in the background for whatever reason and killing it every hour is not going to help your battery life. So I removed all of it and reached almost 48hr out of a charge (low usage).
Turning off animations just takes away the smooth transitions between screens. I believe the home screen launcher (TouchWiz for stock Captivate) is actually unaffected, you still get smooth scrolling between screens. I'm using Launcher Pro and unticking the animations box in the Android settings only took out the menu animations, my homescreens are still smooth and fluid. Just that hitting the menu button makes the menu display immediately, instead of softly/smoothly, and returning to home is also instantaneous. I don't miss the animations, I like my faster AND more efficient.
If you've got the guts to play with your phone and really void your warranty, flashing to Froyo (2.2) and then optimizing everything you can about its power consumption will up the battery life even more. Today I used the GPS for a road trip, listened to music, spent 2hr browsing the Internet, made several phone calls, used the phone as a flashlight for an hour (pure white on screen) and after 24hr off the plug I'm at 50% battery. This phone + Froyo really is no joke, I've spent a couple days' worth of hours tuning so far, but once it's set up it's really satisfying. I can easily wring out 3 days from this phone if I don't go crazy with it.
Edit: If I let the phone sit still for 8 hours I lose about 1-2%. Not bad at all.
Reading around it seems that wifi signal and cell signal quality also majorly affect battery life. So if you're in a good location, you could potentially get much more out of your phone than if you're in a place with bad signal.

My battery life improved dramatically going to
settings ====> wireless and network ====> wi-fi settings ====> options ====> advanced
and changing wi-fi sleep policy to never. My default setting (Rogers) was when screen turns off. Made a big difference. Don't know if the default is the same on AT&T.

idlewillkill said:
My battery life improved dramatically going to
settings ====> wireless and network ====> wi-fi settings ====> options ====> advanced
and changing wi-fi sleep policy to never. My default setting (Rogers) was when screen turns off. Made a big difference. Don't know if the default is the same on AT&T.
Click to expand...
Click to collapse
What do you mean? You battery life improved actually after enabling WiFi to be always on?

I think it's pretty funny how half of the forum swears they get better battery life with wifi on and the other half with it off.
I personally have never gotten better battery life with wifi on. I've ran stock, JH7, 3 versions of cognition, and now on Perception build 4 and this has never been the case for me. I've tried it out with access to different routers with varying amounts of signal and it still showed no signs of improvement.

Fast discharging

I896, Rooted, factory Gingerbread.
I have a Captivate and a Tab. Both Wifi only, no Sims, Airplane mode on, Bluetooth off. Machines are on but screen is off. The Tab looses 3% over the course of the morning and the Captivate looses 20%!
I'm running regular 'power user' type apps; Titanium Backup, Tasker, LauncherPro. If there are any apps notorious for secret batt consumption, let me know what to avoid.
Running SystemPanel Lite - I can't see any app that is taking up more CPU time than normal that would explain this kind of drain. The battery page shows a good proportion of battery use display and wifi. In one instance I used the Captivate so little that display showed less use than wifi. In the course of just checking phone power consumption, the display use percent way up, just like expected (Just to show that wifi was really doing almost nothing) and still I had lost more than 15% of battery over the time when the phone was supposedly idle, not connected to anything with the screen off. Some ghost is sucking the life out of my battery. Grrrr. What could it be?
I loose 30% in a night with wifi off, backlight set to absolute min and nothing runninng or syncing.
I don't get it. Any ideas? What do I try next?

get use to it, its androids horrible power management

rsx19 said:
get use to it, its androids horrible power management
Click to expand...
Click to collapse
His tab is running Android too.
If you don't have anything helpful (or knowledgeable) to say don't say anything.
Op, download watchdog from the market, (system panel is kinda ..meh.) and see if there us a rogue app munching battery.
You may consider flashing a ROM see if its just that firmware/kernel reacting to your phone.

Have you tried Juice Defender?
Also, check to make sure you don't have applications constantly running. What version of android are you running? Check in system settings -> status -> somewhere in here you can check the battery status and what applications are pulling the most juice ... From there if one application needs to be removed you can action it ...

Also try the "Battery Calibration" app in the market. It's free.

studacris said:
His tab is running Android too.
If you don't have anything helpful (or knowledgeable) to say don't say anything.
Op, download watchdog from the market, (system panel is kinda ..meh.) and see if there us a rogue app munching battery.
You may consider flashing a ROM see if its just that firmware/kernel reacting to your phone.
Click to expand...
Click to collapse
my captivate running cm7 STOCK will drain down to 20% from being idle for 12 hours
my battery will also drain 30% from 45 mins of wifi only use.
doesnt help him but thats my experience from my captivate

Menu -> Settings -> Wireless and Networking -> Wi-Fi settinngs -> Menu -> Advanced -> Wi-Fi sleep policy
Set it to when screen turns off.
We have to switch that every time we flash. I really wish it was default. Some ROMs also have background data control, but it's usually when wi-fi is on so it shouldn't be a problem.

rsx19 said:
my captivate running cm7 STOCK will drain down to 20% from being idle for 12 hours
my battery will also drain 30% from 45 mins of wifi only use.
doesnt help him but thats my experience from my captivate
Click to expand...
Click to collapse
You do know that cm7 doesn't have the proper hardware drivers from Samsung so the battery life is known to be HORRIBLE right? If not you should really read up on the ROM you're using
Flash any touchwiz ROM, especially a native I897 build and you will see a dramatic increase in battery life.

studacris said:
You do know that cm7 doesn't have the proper hardware drivers from Samsung so the battery life is known to be HORRIBLE right? If not you should really read up on the ROM you're using
Flash any touchwiz ROM, especially a native I897 build and you will see a dramatic increase in battery life.
Click to expand...
Click to collapse
I'm on CM7 and am going on 27 hours with moderate usage.. Granted, I have the 1800 mah battery from the Sprint Galaxy S2

trying flashing to pinnacle. I too have battled weird captivate drain issues.
if you wanna try CM, read my thread:
http://forum.xda-developers.com/showthread.php?t=1364357

I've held off replying as I was trying a few things and figured I would report only once I was done.
I found and ran Battery Calibration, just before I read the post. Between that and turning Wifi sleep policy to off with screen off, I had a great weekend. I was getting a day and a half out of my phone, which considering the use, was very acceptable. I was getting about the same drain as my Tab. I had 1% battery drain after 4 hrs of screen off time. That seemed fine for me.
I got back to school where I teach and yesterday the phone drained as fast as it has before. Interestingly, it continued its rapid drain even after I left the school and went back home. So, it died at 4am this morning. I heard it shut down. The school has at least 4 routers, two of which have 5k access options. I know if I choose them, my laptop drains way faster. Is there a way to limit my wifi connection on the captivate and not use the faster 5k connection?
But, this still doesn't explain why, even after I leave the school, the Captivate continues to drain when it is 10ft from a single 100mb wifi router.
I'm almost ready to try a custom Rom, but not sure how that will affect my ability to use it as a phone, once I get my Sim activated. Still new to this all.

You think everyone running a custom ROM doesn't use the phone?
Shouldn't affect your ability to do anything...

The WiFi and cell radio do increase power on lower signal as we know, but that's not always the cause of drain. I remember times using Froyo when kswapd goes nuts for no reason, or trillian, email, twitter or some other app just starts using massive CPU. Many apps are probably never tested on a system that has no connection most of the time. That's where all the utilities come in handy to find the culpret. OSMonitor can help find CPU hogs. TiBu can freeze apps, or uninstall them temporarily. Juice Plotter can monitor drain over time (newer Androids have something like it built-in). It takes some time to find it, but newer versions of the OS make it easier and have less trouble.
Also the battery % is only estimated. I'd trust full to empty time rather than 90% to 80% time as 10% use since it's not really as linear as we think.

Not to point out the obvious, but it can be the battery itself that has the problem. They aren't exactly manufactured to NASA standards... well, maybe their standards lately, but the point is, sometimes the ghost you're chasing is staring you right in the face.

Poor battery life on TeamEOS Wingray

I've been running TeamEOS on my Xoom for quite some time, and it's been great. However, recently the device's battery life has become incredibly poor. For example, today my Xoom has been unplugged for 8 hours 47 minutes, without being used at all, and the battery is at 61%.
Previously, the Battery usage settings view was showing the Wi-Fi in use all day, but today I turned Wi-Fi off and it is still the same. The 'GPS on' line shows one small section of blue (about 10 minutes) and the 'Awake' line shows a few times it has been awake, maybe half an hour in total.
I installed BetterBatteryStats and the longest Kernel Wakelock is PowerManagerService, for 2m 2s, the longest Partial Wakelock is ConnectivityService at 57s.
Under 'Other' it shows that the device was in Deep Sleep for 8h 39m.
Another odd thing is that when I first unplug the device, I get a kernel wakelock on cpcap_otg. If I don't do anything the battery drains even faster than it did today (it never goes into Deep Sleep), but if I plug in my USB card reader (without a card), and then unplug it again, that wakelock doesn't happen again, extending the battery life slightly.
I have a Wingray Xoom (MZ604), and I currently have TeamEOS nightly 114 installed. I have tried various nightlies, back as far as 90, and have also done a factory reset, to no avail. I haven't yet tried going back to Honeycomb, although maybe I should just to check, as it certainly used to work fine under TeamEOS 1.0.
Does anyone know anything else I can try to do to fix this?
James

jamesots said:
I've been running TeamEOS on my Xoom for quite some time, and it's been great. However, recently the device's battery life has become incredibly poor. For example, today my Xoom has been unplugged for 8 hours 47 minutes, without being used at all, and the battery is at 61%.
Previously, the Battery usage settings view was showing the Wi-Fi in use all day, but today I turned Wi-Fi off and it is still the same. The 'GPS on' line shows one small section of blue (about 10 minutes) and the 'Awake' line shows a few times it has been awake, maybe half an hour in total.
I installed BetterBatteryStats and the longest Kernel Wakelock is PowerManagerService, for 2m 2s, the longest Partial Wakelock is ConnectivityService at 57s.
Under 'Other' it shows that the device was in Deep Sleep for 8h 39m.
Another odd thing is that when I first unplug the device, I get a kernel wakelock on cpcap_otg. If I don't do anything the battery drains even faster than it did today (it never goes into Deep Sleep), but if I plug in my USB card reader (without a card), and then unplug it again, that wakelock doesn't happen again, extending the battery life slightly.
I have a Wingray Xoom (MZ604), and I currently have TeamEOS nightly 114 installed. I have tried various nightlies, back as far as 90, and have also done a factory reset, to no avail. I haven't yet tried going back to Honeycomb, although maybe I should just to check, as it certainly used to work fine under TeamEOS 1.0.
Does anyone know anything else I can try to do to fix this?
James
Click to expand...
Click to collapse
Battery life seems to be so device specific that it's really difficult to diagnose, tho you seem to be looking in the right places. I'm on 114 as well and my battery life is fine...normal for my device, depending on use. It is said that you need to let a new rom install settle a bit, and I've been told to flash a new rom with a full charge...other than that, I don't know.

It could be some app you recently installed that wakes up your device wifi and consume battery. To diagnose more, get betterbatterystat app.
Sent from my MZ601 using Tapatalk 2

wesamothman said:
It could be some app you recently installed that wakes up your device wifi and consume battery. To diagnose more, get betterbatterystat app.
Sent from my MZ601 using Tapatalk 2
Click to expand...
Click to collapse
He said that is the app he is using. I'm sure, as you said, it is an app causing either wakelock or something syncing in background.

Are you syncing Facebook? I uninstalled the app a long time ago and battery life went up.

Tried wipe battery data in recovery? That may fix your battery issues.

kinda old thread, but if you are still facing battery problems, try this.
go to settings/wifi/advanced and choose never for "keep wifi on during sleep"
I had the exact same problem and it turned out that the device gets a wakeup call from the wifi router every now and then, which keeps it from entering deep sleep mode, resulting in horrible battery stats, running dry after about 1,5 days of just laying around.
Since I did the setting change, my xoom lasts for almost 1,5 weeks at light to medium use (mainly browsing and email) now

Bux1982 said:
kinda old thread, but if you are still facing battery problems, try this.
go to settings/wifi/advanced and choose never for "keep wifi on during sleep"
I had the exact same problem and it turned out that the device gets a wakeup call from the wifi router every now and then, which keeps it from entering deep sleep mode, resulting in horrible battery stats, running dry after about 1,5 days of just laying around.
Since I did the setting change, my xoom lasts for almost 1,5 weeks at light to medium use (mainly browsing and email) now
Click to expand...
Click to collapse
true, but don't forget that will also kill your apps from keeping their state up to date. email push won't work anymore. it's a matter of what you want, i personally rely on the phone for incoming mail and use the xoom for reading with disabled wifi during standby. it's the best of both worlds, instang notification and long battery.

oh, of course you´re right.
I didn´t thought that this could be an issue for other people.
Like you, I get my mails on phone and work on them on tablet.
Like you said,best of both worlds and feels so natural
But I still say, if you can sacrifice the "always-up-to-date" satus on your tab, just do it cause the battery uptime afterwards will be totaly awesome.

P6210 - Huge Battery Drain on ICS

Anyone experiencing battery drain on ICS? I upgraded, rooted, and removed some of the bloatware to help. Thought it was fixed but my tab is dead again. Says the Android OS is taking up my juice. Was never a problem before. Could leave it on standby for days with HC. Now its dead in a day or less.

jjj133 said:
Anyone experiencing battery drain on ICS? I upgraded, rooted, and removed some of the bloatware to help. Thought it was fixed but my tab is dead again. Says the Android OS is taking up my juice. Was never a problem before. Could leave it on standby for days with HC. Now its dead in a day or less.
Click to expand...
Click to collapse
I initially saw similar behavior, but once I killed the cached processes once, and since have shut down to charge and started new, I haven't seen that behavior.
Do you have WiFi on? Could it be you have apps that are checking to be updated? I know in the past on my phone my Amazon Appstore has a habit of starting itself up and continually checking for updates for itself and for any apps I got from Amazon.

Tried it both ways...wifi on and off.

Try using CPU spy (free in market) or betterbatterystats (free- search for it here on XDA) to see what is eating up your battery exactly.
Sent from my SPH-L710 using xda premium

I noticed that I had a conflict between "Power Savings" settings and the "Display" settings. Putting them both at 1 minute resulted in an always on screen I had to disable the Power Savings to correct the problem.

I did have something odd happen yesterday that seems to have kept my screen on for 4 hours. When I got home and opened my case the tab was very warm, and shut off. And all but entirely out of power, before that it has used about 10 % in 17 hours of standby with about an hour of use, or so.
I think it is possible that an app that previously didn't keep the screen on is now for some reason keeping it on, and I didn't notice when I closed the leather cover.
No issues today, but I am going to try and see if I can find some release notes to tell me about the new download for ICS for the P6210, perhaps this is addressed?

Just to update I installed the betterbatterystats. I showed a couple of things that were keeping my tab awake. Once I fixed those I thought that would be it but it was still draining. I then installed juice defender and had it turn wifi off every time I turned the screen off. That did it. Was never like this before the update but at least its good to know I fixed it.

i suggest checking better battery stats for AudioOut_1 Partial Wakelock. its been draining my phone fast when i upgraded to ICS.
check it here: http://forum.xda-developers.com/showthread.php?t=1629346
now my battery is working great.. i just left my tab for 10 hrs in the locker when i got the tab its still have 97% battery.

for me i just checked and changed my wifi sleep policy from never to when screen turns off and its fine now. :highfive:

I thought about this very issue; I decided to wait.
jjj133 said:
Anyone experiencing battery drain on ICS? I upgraded, rooted, and removed some of the bloatware to help. Thought it was fixed but my tab is dead again. Says the Android OS is taking up my juice. Was never a problem before. Could leave it on standby for days with HC. Now its dead in a day or less.
Click to expand...
Click to collapse
Did you download the ICS as opensource? Myself, I am deciding to wait for the OFFICIAL verson to be released.

I had the same problem. i even went back to HC to make sure
the issue is not there (it wasn't) and upgraded to ICS
again (full wipe all the time). No luck something keeps
my device unable to go to deep sleep.
Now i'm back at HC again

hunterbreedlove said:
Did you download the ICS as opensource? Myself, I am deciding to wait for the OFFICIAL verson to be released.
Click to expand...
Click to collapse
The version is OFFICIAL .
It's just available only for some countries.

i had the huge battery drain issue while in stock ICS..
the tablet simply refused point blank to go into deep sleep.. in HC it would but not in ICS.. i would take the tablet fully charged to work and not use it much there.. by the time i was travelling back it would be 60% drained in not using it througout the day...
recently flashed to aorths CM9 build and all my battery woes are gone.. now when i get back from work the battery is at 96%!!
battery drain during usage is the same but the CM9 build has awesome battery conservation stuffs for when you dont use it..
would suggest everyone who has these battery issues to move to CM9.. really helped for me.

My battery usage on CM9..
Sent from my GT-P6210 using xda premium

jjj133 said:
Just to update I installed the betterbatterystats. I showed a couple of things that were keeping my tab awake. Once I fixed those I thought that would be it but it was still draining. I then installed juice defender and had it turn wifi off every time I turned the screen off. That did it. Was never like this before the update but at least its good to know I fixed it.
Click to expand...
Click to collapse
Early results show Juice Defender is helping a lot with mine too. Thanks for the tip!
Next morning: Just the free version of Juice Defender using the default profile took me from 35% overnight drain yesterday down to 3% overnight drain today. That's not bad. It should be even better tomorrow because I've turned off all location services after seeing that BetterBatteryStats says Google location is the worst single offender at keeping wifi going overnight.

vobguy said:
I initially saw similar behavior, but once I killed the cached processes once, and since have shut down to charge and started new, I haven't seen that behavior.
Do you have WiFi on? Could it be you have apps that are checking to be updated? I know in the past on my phone my Amazon Appstore has a habit of starting itself up and continually checking for updates for itself and for any apps I got from Amazon.
Click to expand...
Click to collapse
Could you tell me how you "killed cached processes" please?
I am having similar battery drain. I am in the process of completely charging battery after it drained 40% in sleep mode last night, wifi off in sleep mods, notifications off, sync off.
I have already done a reset to factory, tried draining battery, and recharged in off position.
Nothing is helping so far. I have installed better battery stats, and CPU spy this morning, and will have data tomorrow morning.
thanks for any help

roqufort said:
Could you tell me how you "killed cached processes" please?
I am having similar battery drain. I am in the process of completely charging battery after it drained 40% in sleep mode last night, wifi off in sleep mods, notifications off, sync off.
I have already done a reset to factory, tried draining battery, and recharged in off position.
Nothing is helping so far. I have installed better battery stats, and CPU spy this morning, and will have data tomorrow morning.
thanks for any help
Click to expand...
Click to collapse
I had the same exact problem ever since the stock ICS update. My Tab Plus is all stock, no mods at all. The battery would completely drain after one day, and I have very little on the Tab Plus. Nothing helped at all, so I finally bit and did a factory wipe. The battery drain stopped immediately, so I started changing the settings back to the way I like it.
Then, next day the battery went completely dead again! I back tracked and figured out exactly what it is which makes absolutely NO SENSE - turning off wifi in sleep was what was draining the battery! See my screen captures. Notice on the first screen shot, as soon as the wifi stays on the battery drop bar stayed almost flat.
I observed a similar behavior on my 100% stock AT&T GS3 phone also, turning wifi off during sleep causes more battery drain.

I'm getting "suspend backoff" under kernel wakelocks which is preventing my tab going to deep sleep when unused. Everytime I wakeup in the morning my tab is dead. The only solution I found was to turn off wifi if I'm not using it. Anyway fixing this?
Sent from my ALCATEL ONE TOUCH 918N using xda app-developers app

aperture said:
I'm getting "suspend backoff" under kernel wakelocks which is preventing my tab going to deep sleep when unused. Everytime I wakeup in the morning my tab is dead. The only solution I found was to turn off wifi if I'm not using it. Anyway fixing this?
Sent from my ALCATEL ONE TOUCH 918N using xda app-developers app
Click to expand...
Click to collapse
Juice Defender. The free version of the app, using the default profile, should take care of this.

iosandroid said:
I had the same exact problem ever since the stock ICS update. My Tab Plus is all stock, no mods at all. The battery would completely drain after one day, and I have very little on the Tab Plus. Nothing helped at all, so I finally bit and did a factory wipe. The battery drain stopped immediately, so I started changing the settings back to the way I like it.
Then, next day the battery went completely dead again! I back tracked and figured out exactly what it is which makes absolutely NO SENSE - turning off wifi in sleep was what was draining the battery! See my screen captures. Notice on the first screen shot, as soon as the wifi stays on the battery drop bar stayed almost flat.
I observed a similar behavior on my 100% stock AT&T GS3 phone also, turning wifi off during sleep causes more battery drain.
Click to expand...
Click to collapse
THAT worked!!!!! awesome thanks

Tablet+Dock Standby times

I've been noticing on the latest stock rom, the standby time for the tablet with the dock is like 2-3 days. However, in cm 10.1, I can go 10-20+days. I open them like I usually do and update them once every few hours to keep them up to date. The settings are the same for the most part. However, for some reason, the stock rom really drains the battery for the tablet when docked. Anyone else notice the same?

dude2k5 said:
I've been noticing on the latest stock rom, the standby time for the tablet with the dock is like 2-3 days. However, in cm 10.1, I can go 10-20+days. I open them like I usually do and update them once every few hours to keep them up to date. The settings are the same for the most part. However, for some reason, the stock rom really drains the battery for the tablet when docked. Anyone else notice the same?
Click to expand...
Click to collapse
Try this, go into wifi settings --> advanced --> set "Keep Wifi-on during sleep" to "never". This way your wifi will turn off while the tablet is sleeping.

dude2k5 said:
I've been noticing on the latest stock rom, the standby time for the tablet with the dock is like 2-3 days. However, in cm 10.1, I can go 10-20+days. I open them like I usually do and update them once every few hours to keep them up to date. The settings are the same for the most part. However, for some reason, the stock rom really drains the battery for the tablet when docked. Anyone else notice the same?
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10-20+ days? On CM10.1? Pics or it didn't happen.

buhohitr said:
Try this, go into wifi settings --> advanced --> set "Keep Wifi-on during sleep" to "never". This way your wifi will turn off while the tablet is sleeping.
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Click to collapse
Even with this setting, the standby time with dock was always less than without dock for me. If I separate tablet and dock, they would survive for a week (if I didn't use them daily).
For some reason, when connected to the computer without dock, the tablet charges (very slowly). When connected through the dock, the dock battery is empty within a few hours.

dude2k5 said:
I've been noticing on the latest stock rom, the standby time for the tablet with the dock is like 2-3 days. However, in cm 10.1, I can go 10-20+days. I open them like I usually do and update them once every few hours to keep them up to date. The settings are the same for the most part. However, for some reason, the stock rom really drains the battery for the tablet when docked. Anyone else notice the same?
Click to expand...
Click to collapse
And to me happens the same problem, I charge my tablet on Monday and followed every day how much is spent and on Thursday was 85% and on Friday totally empty. It all started to happen after Updates to 4.2.1. Does anyone know what to do

mastercard25 said:
And to me happens the same problem, I charge my tablet on Monday and followed every day how much is spent and on Thursday was 85% and on Friday totally empty. It all started to happen after Updates to 4.2.1. Does anyone know what to do
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Click to collapse
Make sure nothing is draining battery i.e GPS and WiFi so the tablets entering deep sleep. Brightness as low as you can stomach.
If not then try a full reformat with all your stuff backed up.

It has always been 3 days maximum for me. Maybe I use it a lot more often or extensive than you do, but 10-20 days and over sound like paradise to me.

MartyHulskemper said:
It has always been 3 days maximum for me. Maybe I use it a lot more often or extensive than you do, but 10-20 days and over sound like paradise to me.
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I think he just exaggerated! maybe just 3-4 days with wifi/gps disabled.

The last time I charged mine was uh, let me check...
4d, 5h, 3m, 40s. Has been in my bag without using since then, on standby.. Battery: Tab 87%, Dock 92%. Mine truly does make it about 20 days in total if I don't use it.
You obviously have something running in the background. Maps, GPS, Location services (yes, that drains even with wifi off), a widget...