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Long time lurker, first poster
So the quick/dirty is my tablet's seeming to loose battery rapidly during 'sleep' (hit
power button, screen off). Not always, but sometimes.. Atleast ~10% per 8 hours, about 20% in ~3 hours in the attached BetteryBatteryStats (was away, didn't touch it, went from ~42% to 22%), is this normal?
The first time I noticed it the tablet was at about 72 pct (then I slept), 8 hours later it was sub 30. My phone was next to it in comparison went from 98 to 92 during the same period.
I've not rooted the tablet but I installed the GoLauncher, nothing in the battery stats (attached) seem to jump out at me, other than the WiFi waking it up 291 times?
Do I need to manually disable WiFi every time I hit the power button?
What kind of idle times are you guys seeing?
I'm pretty sure if I left this sitting for ~34 hours it'd be dead, seems kinda crazy that it can't get better standby time then that, my Droid Incredible sitting idle can last at least 3 days and that's fetching email and facebook messenger. In fact I think that's a deal breaker and i'll be returning this thing if I don't see improvement, the tablet's a quick/handy thing to use now and again, but if I have to wait about as long as it takes my laptop to start up (full bootup) then I don't see much use.
I had a similar problem. A full day of light usage and it's down to under 50%. I had to charge every day. Battery usage said it's mostly the wifi.
So I installed "Juice Defender plus" ($2) from android market. And set it to let the defender automatically enable and disable wifi, plus let it auto disable wifi after one minute if it's not connected to a network. Also set it to disable connectivity in the middle of the night.
After nearly 2 days of slightly above my normally light usage, the battery is still at over 70%.
please check the other thread regarding the battery life. I did a factory restore, and it seems to improve battery performance.
rvr350 said:
please check the other thread regarding the battery life. I did a factory restore, and it seems to improve battery performance.
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I'll give that a shot and report back, kind of a pain to have to do that after just a few days, worries me long term
In regards to the Juice App, i'm not really interested in rooting ATM, not sure if i'm sold on this thing yet, the potential is there but there are several things I just can't get used to on it yet, like navigating around apps (lack of back button, bar being on the bottom), and terribly missing the optical sensor (droid incredible) and auto complete. And B&N's App Store is a pretty sad sight in comparison.
techraven said:
I'll give that a shot and report back, kind of a pain to have to do that after just a few days, worries me long term
In regards to the Juice App, i'm not really interested in rooting ATM, not sure if i'm sold on this thing yet, the potential is there but there are several things I just can't get used to on it yet, like navigating around apps (lack of back button, bar being on the bottom), and terribly missing the optical sensor (droid incredible) and auto complete. And B&N's App Store is a pretty sad sight in comparison.
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At least on your last point, one of the best reasons to root is to gain access to the android and amazon marketplace. Forget the B&N store, except for maybe books.
Disabling the BN cloud service seems to increase the battery life a lot. I used app quarantine to disabled the service.
techraven said:
The first time I noticed it the tablet was at about 72 pct (then I slept), 8 hours later it was sub 30. QUOTE]
What do you have syncing? I have nothing on this except Go Launcher, Amazon Store, Solataire and MXPlayer. No email or social networks going and mine lost 4% while sleeping for 8 hours.
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We had a problem almost exactly like this when the first GB kernels were being ported over to the SGS. The solution was to toggle the WiFi sleep policy to anything then set it to "Never."
This should help with a lot of the wake-up/plugged-in drain that you are experiencing.
Why does my WIFI turn off when Prime goes into sleep mode?
This is new over the past week or so. After lock screen, I have to wait 10+ seconds for WIFI to turn on and connect. Any ideas?
Thanks.
The WiFi turns off to save battery while the Prime is sleeping. After all why keep the WiFi radio on if you are not using the tablet?
If you go into Settings > WiFi > Advanced (top right corner of the screen next to "Add Network") you can change this by making WiFi stay on all the time. But don't blame me if your Prime's battery starts dying a lot sooner.
almightywhacko said:
The WiFi turns off to save battery while
PHP:
the Prime is sleeping. After all why keep the WiFi radio on if you are not using the tablet?
If you go into Settings > WiFi > Advanced (top right corner of the screen next to "Add Network") you can change this by making WiFi stay on all the time. But don't blame me if your Prime's battery starts dying a lot sooner.
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Thanks. I wonder if the last firmware made this change. Because I didn't do it.
Wifi uses barely any battery life.
I want apps like Skype to stay active like they did on original Transformer.
Will definitely be changing that setting back!
thanks
xsacha said:
Wifi uses barely any battery life.
I want apps like Skype to stay active like they did on original Transformer.
Will definitely be changing that setting back!
thanks
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Using "some" battery is still a lot more than using "no" battery
To each their own, the default setting is for it to turn off when sleeping. However I believe one of the last firmware updates kept it from turning off, which lead people to complain about shorter than expected battery life so Asus released a new update that fixed it.
From my experience, with WIFi off while sleeping, you can leave the Prime on standby for 2 weeks and come back to find better than 80% battery remaining. That is a pretty handy feature.
Not using the prime for 2 weeks, what kind of person are you? Thats not possible.
almightywhacko said:
Using "some" battery is still a lot more than using "no" battery
To each their own, the default setting is for it to turn off when sleeping. However I believe one of the last firmware updates kept it from turning off, which lead people to complain about shorter than expected battery life so Asus released a new update that fixed it.
From my experience, with WIFi off while sleeping, you can leave the Prime on standby for 2 weeks and come back to find better than 80% battery remaining. That is a pretty handy feature.
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Thanks for confirming my observations.
Hi Everyone,
I've noticed a few other posters have indicated that wifi makes up an unusually large amount of their Prime's battery drain. Personally I'm seeing anywhere between 60-90% of battery usage being attributed to Wifi. Do we know if there are any commonalities in these cases? I'm on a fully stock .21 build with a C3 series Prime, and my battery life has in general not been amazing (6-8 hours off-dock MAX). Anyone else seeing similar outcomes?
Yep, there are quite a few threads about this already
The wifi power consumption is absolute insane. With wifi off the battery last as advertised... but with bt or wifi..... well...
Wish there was a way to select how much power we want to assign to the wifi as i have seen in another phones.
Im having similar issues, on and off.
Recently, Ive been messing around with new roms and and kernels and found out tinkering here and there that when the tablet is put to sleep, its supposed to go into deep sleep, this being what makes the tab super battery efficient when its sleeping
A quick test to see if its going to deep sleep is to download Cpu Spy free from the market, start it, go to options (top right) reset timers to get a fresh reading, put tab to sleep for 10 -20 secs, then turn on, go back to Cpu Spy, options Refresh. You should have a listing for deep sleep, which will tell you that deep sleep is at least working.
Every now and again i would test this, found out that sometimes deep sleep would not initiate, normally its ok straight after reboot, but after ive been using the tab (mind you, not always), and test deep sleep, i find that the tab would stay on a low clock speed rather then deep sleep, well 'low' being a relative term, i mean at some points, the tab wouldnt go below 475mhz even when idle.
When idle, ideally, the tabs if not doing anything intensive in the background, SHOULD go to the lowest CPU state, 102mhz, i think there is something, either system related or app related, thats forcing our primes to run at higher clock speeds and in some cases its not letting our primes go into deep sleep
I think using cpu spy, is a good tool to figure out what that might be, restart your tab, before doing anything, establish that your tab can go to deep sleep while sleeping and uses the lower cpu speeds when idle, and then test it everynow and again, if the issues come back, and you see a connection between a certain app or certain setting you've been using let someone know, chances are, it could be our culprit, in this case the best way to fix something is to find out what needs fixing.
I have already checked forDeepSleep issues but I have none, my tablet sleeps like it should and when turned off use very little energy... but man once it starts transfering data the battery goes to hell hehe (Music streaming, WebSurfing. anything that uses internet).
The battery used by WiFi is more evident when using the Prime in Eco Mode with the light turned all the way down, 80-90% is from WiFi :/
Changing the Policy to disconnect while the screen turns off just does noting for me, since I like I said before, it only uses so much power when transfering any kind of data.
Zephyrot said:
I have already checked forDeepSleep issues but I have none, my tablet sleeps like it should and when turned off use very little energy... but man once it starts transfering data the battery goes to hell hehe (Music streaming, WebSurfing. anything that uses internet).
The battery used by WiFi is more evident when using the Prime in Eco Mode with the light turned all the way down, 80-90% is from WiFi :/
Changing the Policy to disconnect while the screen turns off just does noting for me, since I like I said before, it only uses so much power when transfering any kind of data.
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Thanks for the info.
Just to get our ducks in order, do you test with CPU Spy after you have messed around with the tab, without closing or shutting down anything?
Most of the time, mine works as it should when 102mhz and deep sleep is concerned, but on occasion after playing around with it, i find that deep sleep wont initiate and the lowest clock speed would be 475mhz 370mhz, its as if somethings hanging up the system, not allowing it to initiate lower more battery friendly settings
At the time i was using virtuous prime with motleys kernel with the script specific for virtuous prime, that combination was not allowing lower clock speeds at all regardless what i closed or even a reboot, im now in the process of reinstalling virtuous prime with stock kernel as vanilla as i can make it, as a base rom with all my apps ready, and it seems to be doing what its suppose to be doing, CPU wise.
Gonna get the rom just the way i like it and nand backup, before i reinstall motleys kernel again to see if it improves the battery with its under volt features, this time im gonna wipe davlak and cache see if that makes a difference
Im constantly using eco mode, so thanks for that observation, will definitely keep that in mind when im testing
Sent from my Transformer Prime TF201 using XDA
Yep, what I do almost every day is reset CPU Spy stats when disconnecting my tab from the power so I can have an accurate read of the whole day.
Deep sleep working, CPU scales down to 102MHz like it should.
WiFi is like a black hole of energy when transferring data hehe, wifi on with only chat client and my email and Widgets synced uses almost no power... downloading anything, web browsing, music streaming eats the battery
My tablet also seems to go into deep sleep just fine (at least a few small tests indicate that it does). I'm having the same results as Zephyrot though, if I'm doing something that uses the data connection much it just hammers the battery. It's odd that I can play GTA III with settings turned all the way up for 3 hours and have it use less power than lightly browsing the web for an hour. Do you guys have C3 or C2 models ? I'm curious if the changes they made might have some influence on this problem.
superhyper said:
My tablet also seems to go into deep sleep just fine (at least a few small tests indicate that it does). I'm having the same results as Zephyrot though, if I'm doing something that uses the data connection much it just hammers the battery. It's odd that I can play GTA III with settings turned all the way up for 3 hours and have it use less power than lightly browsing the web for an hour. Do you guys have C3 or C2 models ? I'm curious if the changes they made might have some influence on this problem.
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For reference im on C2, but im in the phase of testing some roms and kernels(recently unlocked to try Cornerstone Rom) so my testing results are gonna be all over the place until i find the best performance/battery rom and kernel, untill then im gonna be doing basic short term tests, untill i settle down, so as far as my personal findings are concerned, take em with a grain of salt
superhyper said:
My tablet also seems to go into deep sleep just fine (at least a few small tests indicate that it does). I'm having the same results as Zephyrot though, if I'm doing something that uses the data connection much it just hammers the battery. It's odd that I can play GTA III with settings turned all the way up for 3 hours and have it use less power than lightly browsing the web for an hour. Do you guys have C3 or C2 models ? I'm curious if the changes they made might have some influence on this problem.
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Exactly my experience, Asphalt 6HD uses less battery than wifi!
C20 Prime here.
Since .21 update my battery life is crap! I can have fully charged tablet and dock, leave it overnight and next morning dock is completely drained and tablet has lost 5-10%. I thought it was wifi issue at first, but have tried several times in airplane mode and still have same result. After reading this, I will try cpuspy and see if it is a deep sleep issue. I cannot tell you how much I regret "upgrading" to .21, which I did accidentally and lost root in the process. Man, I wish this device had a do-over button!
Today just as one day last week, I take out my TFP from it's carrying bag in the middle of the day while at work to discover that it's warm like it's been baking cookies.
Do anybody know what causing this. I work it up opening the lid, the first time this happened I thought it was still on before I closed the lid but no, it was in sleep state.
The first time this happened it completely drained my dock battery, this time it left at least 25% remaining,
the highest battery used components are:
Wifi at 31%
Screen at 29%
Google Services at 18%
Google+ at 7%
Android System at 4%
Tablet idle at 4%
Browser 2%
Bluetooth 2%
the only opened apps are File Manager, Gmail, Email, Browser, and Chome Beta.
I doubt this is your cause, but I disabled the slide to unlock feature on my tablet and it got really hot for some reason, it could've come on in my bag since the slide to unlock seems to be a safety as it allows the tablet to go back to sleep if you dont slide, where as without the lock it seems to stay on.
Like I said I doubt this is your issue.
This happened to me with my TF101 once or twice. A rogue application had woken up the screen, prevented it from sleeping, and was chugging away.
it drained both batteries quickly. I can not recall exactly which app it was but I am pretty sure it was a sports news app (not ESPN score center).
It happened to me twice and discovered that putting it in the gel sleeve with the ON button down would cuz the ON button to be pushed and turning/ waking the tablet constantly, draining the battery and heating.
Also just because it is warm doesn't mean it is overheating. When I opened mine up (been opened ten times by now...) I discovered the back plat plays a role in cooling the cpu. Upon heavy or extended stress it will get warm (or hot if you run 1.8ghz..)
Like others said it is probably something keeping the cpu from sleeping. Factory reset may help..
Sent from my Axiom MAXX!!
my prime is hotter than the first days when i bought it , that`s because ,the summer is telling it's word. if outside are 32-35 C, how cold could the prime be?!
Ready2Mosh said:
I doubt this is your cause, but I disabled the slide to unlock feature on my tablet and it got really hot for some reason, it could've come on in my bag since the slide to unlock seems to be a safety as it allows the tablet to go back to sleep if you dont slide, where as without the lock it seems to stay on.
Like I said I doubt this is your issue.
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I checked my settings for Screen Security, it's still set to Slide.
When I open up the tablet from being closed (I use it with the keyboard dock), it opens right up to the desktop and not prompt to unlock despite the Security Setting being set to Slide.
There's a Battery Saving section under ASUS customized settings to Disconnect network during sleep 'suspends network connection related functions (e.g. Email sync) when screen is off , and resumes when on.', this box wasn't checked despite it often reconnects to the Wifi after I wake it from sleep when it's been idle opened.
I'm going to continue to monitor to see if this setting change has any effect. But this has never happened before till last week.
I had this one time, I had two alarms set because I am kinda lazy at 0530. the first one went off and I killed it and the second went off 30 minutes later but I never noticed it. by the time I got to work 2 hours later my prime was baking and nearly dead.
There is not doubt that a docked prime is buggier than an undocked prime. I have only seen SOD, not connected wifi even though there is a known signal and, the overheating battery drain docked.
There is no doubt also that the dock is the thing that blows everybody's mind the first time they see you rip the pad off and continue to use it (thats what hooked me)
Because Im seriously curious... This phone has a rap of being "atrocious" in terms of battery life... Now I'm not making this post to be mean or anything, In fact I really do want to know what IS causing it or some theories.. and share one theory I have
But my personal experience really says otherwise, Tonight I set a new "record" on my One X+, 16 hours 28 minutes with 2 hours 43 minutes screen on time... And I didnt do anything "extreme" to achieve it, My Google Now is on, my location services are on, autosync is enabled.. About the only thing I have done is install JuiceDefender (My previous record without Juice Defender was about 15-something hours) I watched youtube videos, Read some websites, listened to music, and even played some games... I'm completely stock, no roms or anything
Now, I will note, I had a problem the other day where my battery killed itself, FAST.. After a bit of digging around and tweaking, I discovered the cause was that my One X+ wasnt entering Deep Sleep, and thus the processor was staying at 475mhz or so even when the screen was locked (Causing the battery to be drained like i was using it) What caused this? My Wi-Fi, of all things, While I had a really good signal, I had it prioritizing the 5.8ghz radio, and in my room, the 5.8ghz signal is fairly weak as im a ways from my router... so the phone was switching between it and the 2.4ghz signal, causing the phone to be unable to sleep, Removing the 5.8ghz AP from my phone fixed the issue completely and my phone returned to "normal" behavior...
Yeah i know it sounds really farfetched and weird, and took me a bit of googling to get the idea that this might be what was causing my issue (I tested my hypothesis by turning Wi-Fi off completely and using Cell data, Sure enough my phone slept like a baby and barely used any battery.. i flipped Wi-Fi on and suddenly the phone was drinking its battery down rapidly.. I disabled the 5.8ghz AP and suddenly the phone worked 100% properly again)
I suspect that this is the cause behind some folks who are saying their phone is draining down 7% in 20 minutes with it locked, Its simply not entering deep sleep, the processor is doing something in the background... Could some of them be having the problem i just described? Its possible, Especially if you have multiple Wi-Fi points in your house.. Could the wi-fi in the One X+ be bugged? I dunno, Thats possible to, Thats why I'm posting this...
Now of course some people need a phone that is going to go for 2-3 days without a charge, and no, this isnt the phone for you (There arent many smartphones out there that can manage that if you actually USE it any) But really.. 16 hours with 3 hours of screen on time is pretty darn good.. Thats getting quite close to my Galaxy Nexus with a 3500mah Extended Battery (Around 18h standby, 3.5-4 hours screen on) despite all of the "handicaps" the One X+ has over the simple GNex (Like LTE and a Quad Core processor) and is vastly better than my stock Galaxy Nexus battery which died constantly...
And yes, heres a screenshot as proof if you dont believe me...
I just want to add that I find that googlenow also drains the battery and as such I always disable it. It was a problem on my S2 and thus I have disabled it on my HOX+
Honestly, mine wasn't lasting longer than 8 hours until I rooted it and simply "froze" all of the AT&T apps I wasn't using. That alone gave me an extra 2-3 hours a day of battery life! (I've read here that the AT&T apps, even if you aren't using them, keep running in the background) The other thing that seems to help is an app called Smart WiFi toggler that's done wonders for both myself and everyone else I know who uses it in terms of minimizing WiFi battery usage.
https://play.google.com/store/apps/details?id=com.sebouh00.smartwifitoggler&feature=search_result#?t=W251bGwsMSwyLDEsImNvbS5zZWJvdWgwMC5zbWFydHdpZml0b2dnbGVyIl0.
I'm sure other folks have other tips, but this has been the winning combo for me.
I should add that i also froze every ATT app i could and never opened ANY of them.. So maybe thats part of it as well..
JuiceDefender i believe is doing something similar for me with the Wi-Fi by turning it off when its not needed...
My battery life was terrible when I first got this phone. I let it charge out completely once this month and I've been using LBE Security Master. Those two things have greatly extended my battery so much I have been able to go more than a day with it before charging. Another factor might be that my phone isn't carrier branded or anything.
The "My Wi-Fi isnt letting my phone enter deep sleep" thing is actually starting to get annoying, I thought i fixed it but it keeps coming back...and yes, it is legitimately killing my battery at twice the normal rate because the phone will -not- enter deep sleep
My phone goes into deep sleep just fine if i turn Wi-Fi off...and my battery drain returns to normal....So it cant be some app downloading stuff or constantly pinging the internet or else it would do the same thing when im on LTE...
Also i've reset the "Keep Wi-Fi on during sleep" option to never 20 times now, it keeps going back to "always" on me...
Ideas?
My battery life is ok. See here:
http://forum.xda-developers.com/showthread.php?t=2067143
Mine is too, Provided i turn Wi-Fi off or i get the bug to go away for a bit (basically toggling wi-fi on and off a few times and twiddling with the settings makes it work right, but the problem comes back minutes or hours later)
Otherwise, Wi-Fi wont let my phone enter deep sleep, and my battery drains like im using it..
The thing thats annoying me more is that the "Keep Wi-Fi on during sleep" setting will not stay where i set it and keeps going back to the default setting....
I guess i can just toggle wi-fi on and off manually...