I have a Gtab with TnT Lite 2.2.0, and its been asleep for approximately 24 hours. When I slept the display yesterday, the battery was at 92%. Just woke it up, and now its 52%.
I slept it via a quick press of the power button on the side. Should I long press and then select 'Sleep'? Seems like the WiFi was definitely off, when it woke up it had to reconnect to the wireless. Its been awhile since I messed with Android, my last device was a G1, and I'm not sure if it lights up the WiFi when its asleep. My battery use is WiFi - 45%, Device idle - 44%, Android System - 10%, Display - 2%.
Does this sound normal battery drain?
Sounds normal to me. I went from 75 to 34 overnight, just sitting unplugged.
If you're running TnT Lite, don't let the battery get to low... Mine got low, started a FC loop and I lost everything. Guess it's time to start over
This drain is why I want to see if getting SetCPU or similar apps working would help keep screen off battery use down to a minimum. It may or may not work, there may be other apps and things we could try, something to really shut down all the extraneous running junk.
Mine loses about 4%/hour in sleep mode. But I have the problem with my unit where it won't "wake up" once I put it to sleep (detailed all I've tried to fix this on this thread: http://forum.xda-developers.com/showthread.php?t=855821).
Even though it won't wake up, it still burns about 4%/hour in sleep mode.
To work around the "it won't wake up" I use regpon wifikeepalive from the market which prevents the cpu from totally disengaging. I also use CPUBoost from the market to set the cpu to 216000 when the screen is off. Doing this should still result in higher battery drain than if the unit slept properly but in my experience it does not, it still drains at about 4% an hour.
My Archos 101 however does not behave like this. When sleeping it drains at a rate of about 1% every 2 hours. Whereas the GTablet will die in sleep mode in about 25 hours, the Archos could stay alive for about 200 hours!
I did some testing with the two, using DDMS (part of Android SDK). Oddly, when the Archos is "sleeping" the USB port is still active and I can get logging out of it, whereas the GTablet shuts down the USB port (odd becuase its the GTablet which is burning battery). The Archos does seem to log its power down/power up elegantly from what I can tell...I can't tell anything about the GTablet because it shuts down the USB port for debugging. Log2SD on the Gtablet doesn't really tell me much either.
There is something very wrong with the power management stuff on this chipset/or on the GTablet. This is definitely something that would be good to see addressed at some point. Having a tablet that can stay away from the wall charger for a week (Archos) is definitely nicer than having one that you have to put on a charger nightly.
Can anyone else report what their battery drain is like while the unit is sleeping?
Sean
If you run dmesg (either via ADB shell or via Terminal Emulator) you'll probably see lots of wake-sleep-wake-sleep activity going on while it's supposedly asleep. At least I've seen that with Vegan ROM.
Also, just because your Wifi was asleep when you woke up the G Tablet doesn't in my experience mean it was really asleep the whole time.
As an experiment, I'd suggest you charge up your G Tablet, then manually turn off Wifi and try sleeping it overnight. When you wake it up, check the battery usage and compare - I'm guessing it will be significantly lower, but you need to try for yourself.
The power management stuff is definitely still quite beta quality with our kernel and ROMs. I think that's mostly NVidia's fault. To a lesser extent it's a function of support from the ROMs which will improve.
rcgabriel said:
If you run dmesg (either via ADB shell or via Terminal Emulator) you'll probably see lots of wake-sleep-wake-sleep activity going on while it's supposedly asleep. At least I've seen that with Vegan ROM.
Also, just because your Wifi was asleep when you woke up the G Tablet doesn't in my experience mean it was really asleep the whole time.
As an experiment, I'd suggest you charge up your G Tablet, then manually turn off Wifi and try sleeping it overnight. When you wake it up, check the battery usage and compare - I'm guessing it will be significantly lower, but you need to try for yourself.
Click to expand...
Click to collapse
Thanks for the dmesg advice, I'll play with that. I'll try turning off my wake fix hack (regponwifi), turning off wifi, letting it sleep overnight, then restarting it (since it won't wake) in the morning to see if the battery drain goes down and report back here tomorrow.
Sean
Narcoleptic said:
I have a Gtab with TnT Lite 2.2.0, and its been asleep for approximately 24 hours. When I slept the display yesterday, the battery was at 92%. Just woke it up, and now its 52%.
I slept it via a quick press of the power button on the side. Should I long press and then select 'Sleep'? Seems like the WiFi was definitely off, when it woke up it had to reconnect to the wireless. Its been awhile since I messed with Android, my last device was a G1, and I'm not sure if it lights up the WiFi when its asleep. My battery use is WiFi - 45%, Device idle - 44%, Android System - 10%, Display - 2%.
Does this sound normal battery drain?
Click to expand...
Click to collapse
Mine also drains way too much when sleeping. Right now I'm experimenting with disabling services. Calendar, Gmail, Contacts, Dropbox .. many of these just duplicate what my phone does so I just moved them to bookmarks in a browser.
Something really eats battery when asleep. In comparison my iPad would probably go a month in sleep mode. Whatever Apple is doing with batteries and power management is fantastic.
I'm currently running Vegan 5.1 and hope to switch over to Cyanogen 7 soon. I may try playing with Juice Defender.
So I reflashed last night using Pershoot's new kernel and tntLite 4.21. I've loaded almost nothing back on the unit. I shut down wifi, presed the power button to put the unit to sleep overnight and here's what I saw:
80% @ 12:27am
48% @ 9:18am
So it dropped 32% in almost 9 hours or around 3.5%/hour. Note that it still didn't wake from sleep, I had to reset it. Pershoot posted that he's going to try to put more logging in his kernel to see what is going on with the failure to wake scenario.
Clayfree, I'm not sure this is an Apple vs Android thing, the Archos 101 I have here is Android and it drops battery life MUCH slower than the Gtablet. I think this is more a Gtablet issue. This is going to be an issue for Google, different hardware makes it a much more challenging proposition than what Apple has to deal (one type of hardware that they control).
Sean
stiphy said:
So I reflashed last night using Pershoot's new kernel and tntLite 4.21. I've loaded almost nothing back on the unit. I shut down wifi, presed the power button to put the unit to sleep overnight and here's what I saw:
80% @ 12:27am
48% @ 9:18am
So it dropped 32% in almost 9 hours or around 3.5%/hour. Note that it still didn't wake from sleep, I had to reset it. Pershoot posted that he's going to try to put more logging in his kernel to see what is going on with the failure to wake scenario.
Clayfree, I'm not sure this is an Apple vs Android thing, the Archos 101 I have here is Android and it drops battery life MUCH slower than the Gtablet. I think this is more a Gtablet issue. This is going to be an issue for Google, different hardware makes it a much more challenging proposition than what Apple has to deal (one type of hardware that they control).
Sean
Click to expand...
Click to collapse
Yes I agree it's probably not an Apple/Android issue. The only other tablet I have is the iPad so I compare them by default. I do have a Samsung Vibrant that does really well with battery life.
What I will say about Apple is that they are very conscious of battery life and how it shapes our perceptions and usage of their products. With the iPad i NEVER think about the battery and it really affects how I use it. Don't get me wrong, there's plenty I don't like about the iPad and that's why I'm here
When you guys talk about putting the G-Tab to sleep, are you just pressing the power button for a short period to turn off the screen? Is that sleep or just screen off? Because if I hold down the power button to bring up the shutdown options, there is a "Sleep" option that can be selected. Are these two the same mode, or two different things?
I'm talking about both methods, I believe they are the same thing. I've observed similar results using either method, namely that my tablet won't wake up.
I will run another test at some point using the sleep option.
One interesting thing to note is my Archos 101 has a "deep sleep" option too on the power button hold. Not sure what this means, and why this isn't an option on a Gtab.
Sean
smalis said:
When you guys talk about putting the G-Tab to sleep, are you just pressing the power button for a short period to turn off the screen? Is that sleep or just screen off? Because if I hold down the power button to bring up the shutdown options, there is a "Sleep" option that can be selected. Are these two the same mode, or two different things?
Click to expand...
Click to collapse
That's a good question. I just press the button. I have not tried using the sleep command.
I'm really worry about this... I use Current Widget to get the battery consumption and is SO high! much more than any of my Android phones in Airplane mode...
Any solution? I tried TnT rom and Vegan... and it's the same!
Thanks!!
Related
hi there!
as mentionend by users in other threads, it seems that a high number of raphs have a draining battery issue - compareable to the bug in our kaisers about a year ago: batterystatus measures around 70/80 mA in sleepmode with all programs and tf3d closed - on a kaiser with custom rom was around 4mA (!!).
So please, dear chefs: Try to figure out how we can fix this one
Check out some kind of solution / a way to improve your battery uptime: http://forum.xda-developers.com/showpost.php?p=2770702&postcount=25
Update: Battery was sucked empty from 90% within 3-4 hours in the night (!!). No running programs. In the chart you can see the difference between loading with the 220V plug and the USB-cable (last part of the chart). Sometimes it looks as the device sucks more power than the usb loader can deliver -> battery will get empty even when plugged into the computer the whole day.
Looks as we really need a solution thus waiting for htc or cellproviders is useless :-(
licht77 said:
Update: Battery was sucked empty from 90% within 3-4 hours in the night (!!). No running programs. In the chart you can see the difference between loading with the 220V plug and the USB-cable (last part of the chart). Sometimes it looks as the device sucks more power than the usb loader can deliver -> battery will get empty even when plugged into the computer the whole day.
Looks as we really need a solution thus waiting for htc or cellproviders is useless :-(
Click to expand...
Click to collapse
Can you check this? Start->Settings->System->Power. Make sure that the "When device is turned on, do not charge the battery when connected to the PC" is unchecked.
programatix said:
Can you check this? Start->Settings->System->Power. Make sure that the "When device is turned on, do not charge the battery when connected to the PC" is unchecked.
Click to expand...
Click to collapse
Of course it is unchecked - but thanks for the hint!
I still need to get over the shock that it took just 3-4h to ground the battery in standby without running programs oO
for me it helped a lot to improve battery life to set the setting 18.4 (energy saving) in diamond tweak...
pensador said:
for me it helped a lot to improve battery life to set the setting 18.4 (energy saving) in diamond tweak...
Click to expand...
Click to collapse
I need to compare the tweaks but i enabled energysaving options with Advanced Config... - but I will give diamond tweak a try and even do a hardreset in order exclude 3rd party software for the power consumption...
ill report soon!
im having battery issues, too.
sometimes the phone gets unresponsive, really hot and battery drops 30-40% in ~1h minutes - without being used.
i love my touch pro, but ive got so many problems (crashes, hang ups, battery, broken screen thing, grey display with stripes, the list goes on and on...) that im considering to return it
So... small update of my findings:
My Raph(s):
R 1.02.25.19
G 52.23.25.1.7U
D 1.69.00.00
The power consumption usually never falls below 75mA. It goes up to usually 240mA, 700mA yes sometimes 1100mA. (Again: in standby!)
Comparison: on the kaiser it was around 4-12mA with Teijaks V5.
The following changes WONT affect this problem:
o disabling TF3D
o switching to GSM/GPRS only
o switching off persistent internet connection (e.g. exchange server) (!!!)
o kicking ALL not absolutely necessary backgroud processes step by step and measure between
Naively i thought that someone may be interested in that behaviour and called my provider t-mobile... ok, bad idea as they seem to have none knowledge about that devices at all.
But at least I got a number of their hardware-supporter / servicemen "Kapsch" who couldnt help me either but where kindly enough to pass me a number of HTC here in Europe.
The nice lady with basic knowledge about the devices as well as the language we were talking in came to the conclusion that the only solution would be to send the devices in via my provider.
Well, so they believe that exactly theese 3 raphaels here are the only ones to suffer from that power drain (hardresettet, blank installation, bla bla like above)... and sending them in (what means: dont see them again for a month or so and get them back in the same condition) would be THE solution.
Somehow i am pissed that i already sold the kaisers and wonder how it will be next week on a businesstravel with an unpowered TomTom outside the car and a phone which drains in a few hours in standby
(Sorry for whining around...)
Completely agree with some of your figures, however the highest i have ever seen is around 550mA. Usually after no data transfer i get it to drop to between 89 ~ 110mA. How are you measuring standby current? When in standby, how can the software measure the current? I only ask as like you, the lowest i have seen for current is 82mA, however this figure would give a max standbytime of around 16 hours. I have found that the TP in standby performs the same if not better then my old kaiser which, like you measured around 4mA in standby. From what i have seen, i can not measure a true standby current like i could on the kaiser.
I measured with CommMgrPro and batterystatus...
Measuring a "real" standby without changing the battery with an Ampere/Voltmeter is not easily possible i think... so i use CommMgrPro and accept its own usage as somekind of "Baseline".
Or - if you dont need a chart / history, i use the much smaller Batterystatus, disable TF3d to see the Homeplug and close all applications. With all apps closed i turn of the device, wait a minute or to be sure that it has gone sleeping, and wake it up. A few seconds after turning on the mW/mA measures will jump to the "standby" values due to its delay. Not 100% accurate but okay for comparison reasons...
Edit: Theese are my processes, the bold ones have been killed for testing purposes:
NK.EXE;0;0;\Windows\nk.exe;;2;FEFF002
filesys.exe;9760768;6286864;\Windows\filesys.exe;;14;FEEDCE6
device.exe;6602752;5714424;\Windows\device.exe;;218;FEB8F4A
cprog.exe;10567680;10227808;\Windows\cprog.exe;-n;12;2D93537A
SAPSettings.exe;114688;2944;\Windows\SAPSettings.exe;99;5;E9C7742
gwes.exe;4698112;4214840;\Windows\gwes.exe;30;35;E9B4566
shell32.exe;1724416;886584;\Windows\shell32.exe;50;21;CE70CBAA
services.exe;3035136;2127440;\Windows\services.exe;60;74;AEDD3EF2
connmgr.exe;409600;99152;\Windows\connmgr.exe;70;17;D8D06E6
Biotouch.exe;1024000;636792;\Windows\Biotouch.exe;;9;EF86C7DE
SDDaemon.exe;176128;28544;\Windows\SDDaemon.exe;;2;6DA68DBE
tmail.exe;352256;46256;\Windows\tmail.exe;-NoUI;6;ED2CCD36
OperaPreL.exe;24576;32;\Windows\OperaPreL.exe;;2;EC986A3E
Opera9.exe;159744;4256;\Windows\Opera9.exe;;1;C4FA06E
JBlendDaemon.exe;188416;65744;\Windows\JBlendDaemon.exe;;3;C595512
SIPGT_app.exe;1863680;1688032;\Windows\SIPGT_app.exe;;2;AC57D24E
My5MsgCenter.exe;180224;22016;\Windows\My5MsgCenter.exe;;5;C2CD412
myFavesService.exe;299008;132608;\Windows\myFavesService.exe;;2;AD8D0806
licht77 said:
I measured with CommMgrPro and batterystatus...
Measuring a "real" standby without changing the battery with an Ampere/Voltmeter is not easily possible i think... so i use CommMgrPro and accept its own usage as somekind of "Baseline".
Or - if you dont need a chart / history, i use the much smaller Batterystatus, disable TF3d to see the Homeplug and close all applications. With all apps closed i turn of the device, wait a minute or to be sure that it has gone sleeping, and wake it up. A few seconds after turning on the mW/mA measures will jump to the "standby" values due to its delay. Not 100% accurate but okay for comparison reasons...
Click to expand...
Click to collapse
OK, this i could do on the kaiser, but not on the touch pro. Each time i turn the phone on, i see at least 82mA, which would only give a stnadby of 16 hours - but i can achieve 3 days, so clearly this is not the standby current.
3 days.. i can only dream of that That would mean that you got around 19mA drain in standby... how do u measure?
licht77 said:
3 days.. i can only dream of that That would mean that you got around 19mA drain in standby... how do u measure?
Click to expand...
Click to collapse
Thats what i'm trying to say - i cant measure anything below 80mA when i turn the TP on, however it is obviously NOT the standby current as i can obtain 50mA with a dim backlight, plus get 3 days standby. When i state 3 days, thats with no usage!
I'm just trying to point out that what you think is the standby current, probably isn't and we all know that there are issues with the battery management on this phone.
Another example, i have had my phone of charge since 7am, made a couple of short calls, 5 mins of wap browsing, and its currently reporting 95%. If my standby current was 80mA, it would be down to 50% by now. However, assuming i continue to use the phone in this way, in theory i should get 160 hours, which indicates an average drain of 8mA.
I agree - of course you are right and measuring this way can - if anyhow - assist in relatively comparing two devices/ configs but not deliver absolut values of course.
With batterystatus it worked pretty well on the kaiser - and even on the raph i could see 3 or 4 times my beloved 4mA... but in 99% its around 80aH ind standby and around 300-400 in usage which seems plausible regarding my usage.
Nevertheless i had several times a "hardcore" drain where i must had (mathematically) around 400 during standby and maybe even more during worktime when plugged in via USB: It DISCHARGED what means that it used more power than USB could deliver
(usb charging settings correct)
If I dont get my callback from my provider today, then i will try an inofficial RadioRom this weekend...
In standby mode, all application should have been paused by the deviced, right? Then how can any application measure the power usage in standby mode?
some apps keep going. thats how you get messages
i can get 2days out of my phone with heavy usage
Brendo said:
some apps keep going. thats how you get messages
i can get 2days out of my phone with heavy usage
Click to expand...
Click to collapse
That is because the OS send out events when something happens, thus waking up the device and letting the apps run.
For SMS, sim card receive message, sim card inform OS, OS wakes device up, OS send out events, app capture the events.
For alarms, OS wakes device up when the schedule reached, then send out events or start apps depending on the alarm.
So, device must wakes up before apps can do anything.
Some apps intercept the standby button (power button) and instead of letting the device goes to standby when pressed, just turns off the display. For TP, HTC has modified something (or loaded some apps) to make sure that when you are playing the music or listening to the radio, the power button just turn off the display instead of going to standby mode. If the device goes to standby mode, the device could never play any music.
So, if the battery benchmarking app you are using is able to measure the power consumption when the device goes to standby, I doubt it. It actually just turn off the display.
I seem to have fixed or at least drastically improved my battery. I was suffering major drainage with moderate to heavy use, after about 5 hours the power would go down from 100% to 10%. I have WiFi on permanently and do a lot of emailing and texting.
I drained the battery to 0% and with the phone off (not in standby) I charged it using the AC adaptor. With it fully charged and the button light on (glows when charging, solid on when charged) I turned the phone on and first time it said 88% charged?!?! But it lasted the whole day and even had a good 30+% left at the end.
Did it again, ran loads of apps and switched everything on until 0% battery. Charged over night with the phone off. Next day it said it had 95% charge when I switched it on and again it lasted all day with quite heavy usage.
Discharged it again that night and plugged it in, today it says 100% and I'm pretty sure it will last even longer.
I've also found that after doing this, if I don't use the phone and the screen is off, I can leave it for 4 hours and the battery percentage doesn't even go down 1%.... which is a bit unbelievable but happens.
PLeased to say, now this last gripe seems to be fixed..... this is by far the best smartphone I've owned or used and on the market. Great step up from the TYTN II and iPhone (nice toy but useless for email and destructive with exchange servers).
Gav_ said:
I drained the battery to 0% and with the phone off (not in standby) I charged it using the AC adaptor. With it fully charged and the button light on (glows when charging, solid on when charged) I turned the phone on and first time it said 88% charged?!?! But it lasted the whole day and even had a good 30+% left at the end.
Did it again, ran loads of apps and switched everything on until 0% battery. Charged over night with the phone off. Next day it said it had 95% charge when I switched it on and again it lasted all day with quite heavy usage.
Discharged it again that night and plugged it in, today it says 100% and I'm pretty sure it will last even longer.
Click to expand...
Click to collapse
True. Draining the battery completely really helps. I've done it about 3 times and now my device can reach 2 days of heavy use with 1 charge. When I bought it drained very fast and charge indications were way of. (1 hour charges would just increase charge level with 5-10%).
What also adds battery life ia disabling activesync in the notification queue. Use memmaid or a similar program. Go to the notification queue and disable the entry for repplog.exe with the comment "system time changed". Activesync will function normally when connected to a PC. Not sure about OTA exchange syncs though...
Hope this helped
Scott
Hi,
I've found that the Raphael battery stops charging when it gets warmer than 48 degrees Celsius. I discovered this because I am using WMWifiRouter all day at the office, and noticed that although I have the Raph connected to a 2000mA wall charger, the battery drained and device got down to 10%.
The trick is that I have to put the device in "standby" mode py pressing the power button. The screen goes off, but the device is still running. This resulted in a lower device / battery temperature, and the battery remained at 100% after 8 hours of usage with WMWifiRouter and connected to the wall charger.
I can contrast this to with my Kaiser, which didn't stop chraging the battery until about 65 degrees Celsius!!
Maybe that helps too.
-Z
This works in VegaN - YMMV...
Settings -> Wireless settings -> then hit the menu button, and choose "Advanced", then select "WiFi Sleep policy" (It was set to NEVER!)
Spare parts showed (via 'Spare Parts' app) that the WiFi was on 100% of the time - even while sleeping..
I'll give this a try tonight when I go to sleep.
I like to leave it at "never" so that there is no delay upon wake up to connect to wifi. With the table in use (vs. sleeping) the battery life is so long; almost 10 hours, I don't worry about a little battery drain while sleeping. Just connect it to the charger once a day or less.
insight3fl said:
I like to leave it at "never" so that there is no delay upon wake up to connect to wifi. With the table in use (vs. sleeping) the battery life is so long; almost 10 hours, I don't worry about a little battery drain while sleeping. Just connect it to the charger once a day or less.
Click to expand...
Click to collapse
You get a 'little' battery drain while sleeping? If I leave my gtab unplugged overnight, it loses about 4% per hour.. or about 30% overnight. That's why I'm trying different things. 30% overnight isn't a little to me -- it's way too much.
A tablet like this should all but go into a state of suspended animation while sleeping...
30%, really? That sounds as if there's something else going on rather than just wifi draining.
Edit- Some thoughts. There are some apps that require permission to update or snag some ads from the net and operate on their own.
Go take a look at what you have installed and look at your screen timeout settings.
If you have CWM and can get to recovery, wipe battery settings and then reboot/charge. Some people drain completely then charge to get to 100%. Some threads seem to show this is a Vegan issue. (Mine gets to 97 tops but as long as battery life is not affected, I'm good)
HTH
DudeInMyrtleBeach said:
You get a 'little' battery drain while sleeping? If I leave my gtab unplugged overnight, it loses about 4% per hour.. or about 30% overnight. That's why I'm trying different things. 30% overnight isn't a little to me -- it's way too much.
A tablet like this should all but go into a state of suspended animation while sleeping...
Click to expand...
Click to collapse
Just curios, why would you leave it on all night when it will never be used? it only takes a minute to boot in the morning when you turn it on.
insight3fl said:
Just curios, why would you leave it on all night when it will never be used? it only takes a minute to boot in the morning when you turn it on.
Click to expand...
Click to collapse
I leave it in sleep mode because its my alarm clock. I also now leave it plugged in.
I've tried draining the battery then resetting stats in clockwork. If tried about every variation of doing that I can think of short of waiving a dead chicken over it.
sent from my g-tablet using tapatalk
I've left mine on and unplugged(it went to sleep) for 3 or 4 days and come back with battery still. 30% overnight seems odd.
skeeterpro said:
30%, really? That sounds as if there's something else going on rather than just wifi draining.
Edit- Some thoughts. There are some apps that require permission to update or snag some ads from the net and operate on their own.
Go take a look at what you have installed and look at your screen timeout settings.
If you have CWM and can get to recovery, wipe battery settings and then reboot/charge. Some people drain completely then charge to get to 100%. Some threads seem to show this is a Vegan issue. (Mine gets to 97 tops but as long as battery life is not affected, I'm good)
HTH
Click to expand...
Click to collapse
I think you might be right, because I used Cyanogen Mod for a month and a half and had no issue like this. Now I am using TNT Lite 4.2.4 and I am still having no battery life issue.
Also I have never been not able to charge my Tab to 100%. So I may suggest that you guys try switching to cyanogen mod or tnt lite.
Is anybody seeing heavy battery loss during standby mode?
On average my TF is losing between 3.5 and 5% battery in standby mode. I have done a few tests with and with out airplane mode and it does not change.
I currently have an RMA setup with ASUS but I dont want to have to send it back and wait 14 days, so I wanted to reach out here first.
Thanks in advance,
Brandon
Every device I've ever owned has lost power during standby. That's the tradeoff. Otherwise, you could, you know...turn it off?
Windows has that nice "hibernate" hybrid.
It's totally not worth an RMA...don't let your OCD win.
There are a few processes that run in the background like Android OS, WiFi, keyboard etc. It needs to be reactive to certain signals so it can't be off completely. The iPad has amazing stand-by times but I don't know why. I just saw it when I borrowed one for a day from a friend.
I would NOT RMA my device unless it's a significant drop in battery life (>10%/h); it's just the way it is mate!
But what I realized is after I rooted, installed SetCPU and set the governor to ondemand the battery life has increased significantly. It idles at 216MHz now.
mine doesn't have a great standby time either, pretty bad actually when you compare it to my xoom. however its an issue that should be fixed with a software update and it shouldn't require an rma.
Sent from my ADR6400L using Tapatalk
Check if you have your Wifi on sleep also?? Depending on number of applications that you use for updating it might be using your battery.
There are a number of other threads already discussing the issue of battery life in standby, but here's my conclusion: the TF has an issue with wifi that if you set it to stay on while the TF's screen is off (a setting in the wifi section of system settings), it burns quite a bit of battery while on standby. If you set it to turn off when the screen is off, then it doesn't.
I know this is a bug with the TF because the Xoom does not exhibit this behavior. It burns less than .5%/hour when on standby with wifi set to stay on when the screen is off. The TF gets this same performance (<.5%/hour burn) on standby only if wifi is set to turn off. Otherwise, I'm getting the same as you: around 3.5%/hour burn rate.
I'm assuming that the TF's wifi just doesn't enter whatever low-power state it's supposed to enter while on standby. My second assumption is that this is something that will get fixed in an update.
Sent from my Transformer TF101 using Tapatalk
I just turn on airplane mode when I know it is going to sit, and it burns about 1% an hour.
wynand32 said:
There are a number of other threads already discussing the issue of battery life in standby, but here's my conclusion: the TF has an issue with wifi that if you set it to stay on while the TF's screen is off (a setting in the wifi section of system settings), it burns quite a bit of battery while on standby. If you set it to turn off when the screen is off, then it doesn't.
I know this is a bug with the TF because the Xoom does not exhibit this behavior. It burns less than .5%/hour when on standby with wifi set to stay on when the screen is off. The TF gets this same performance (<.5%/hour burn) on standby only if wifi is set to turn off. Otherwise, I'm getting the same as you: around 3.5%/hour burn rate.
I'm assuming that the TF's wifi just doesn't enter whatever low-power state it's supposed to enter while on standby. My second assumption is that this is something that will get fixed in an update.
Sent from my Transformer TF101 using Tapatalk
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+1 on this. Looking forward to the updates
wynand32 said:
There are a number of other threads already discussing the issue of battery life in standby, but here's my conclusion: the TF has an issue with wifi that if you set it to stay on while the TF's screen is off (a setting in the wifi section of system settings), it burns quite a bit of battery while on standby. If you set it to turn off when the screen is off, then it doesn't.
I know this is a bug with the TF because the Xoom does not exhibit this behavior. It burns less than .5%/hour when on standby with wifi set to stay on when the screen is off. The TF gets this same performance (<.5%/hour burn) on standby only if wifi is set to turn off. Otherwise, I'm getting the same as you: around 3.5%/hour burn rate.
I'm assuming that the TF's wifi just doesn't enter whatever low-power state it's supposed to enter while on standby. My second assumption is that this is something that will get fixed in an update.
Sent from my Transformer TF101 using Tapatalk
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Is there an adjustment for the Wifi and/or app settings. In general the second or third largest power consumer in these devices is the radios. The radio needs to be powered up whenever a connection needs data. This can be for keep alive messages that verify the existence of a wifi connection to an access point, or from an app such as gmail, calendar, etc. checking for new data. In any case there may be settings that allow one to decrease the frequency of these operations.
ssj4vegita2002 said:
I just turn on airplane mode when I know it is going to sit, and it burns about 1% an hour.
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FYI, I did a few tests with airplane mode on and I was still losing around 3.5%-5% battery life.
I did do a few more tests, and my most recent test I found interesting.
I use my TF as usual and had a few applications running, I then turned off the screen and let it sit for an hour and 4% battery life was used.
Then I powered down my TF fully, then I powered it back up and turned off the screen. (Currently the TF is up and running but no applications have been opened aside from backround apps Syncing).
I put the TF into standby (turned off the screen) at 1:37 am and I had 53% battery life.
I checked on the TF in the morning at 8:51am, and I had 51% battery life.
So in just over 7 hours my TF only used 2% battery life in standby which is a very acceptable range.
Conclusion, what ever apps we are opening and using under normal use are not being fully closed out, and are running in the backround, not the backround services as per the airplane mode test.
I will do a few more tests tommorrow, I hope this helps and I look forward to others feedback!
Brandon
Brandon - Please check out yours with wifi set to turn off when the screen is off. In all of my testing (similar to yours), that made the difference between great standby performance (<.5%/hour) and not-so-great (3.5%/hour or more). Nothing else seemed to matter, including manually turning off just about every app that normally runs in the background and verifying that they stayed off.
Hopefully soon Asus will also fix the battery stats bug so that we can see what apps/system components are actually using power on standby. Or they'll just fix wifi so that it sleeps as it should.
Sent from my Transformer TF101 using Tapatalk
I have already done the tests with WIFI turned off and also with the TF in Airplane Mode.
So far the only time I have gotten great standby time was when I rebooted my TF and did not open any applications. (WIFI was on FYI)
Brandon
so, the last two night i've gotten great result from stand by mode. The first night i went and killed couple of programs, before putting in AP mode for the night. 12:45 am till 9:00 am from 78% 75%. Last night at 12:00am had 34% this morning at 8:00 it dropdown to 32%.
I took a screenshot of the battery usage after waking up in the morning. Wifi was left on with the sleep policy set to sleep on screen off. It seems to turn back on intermittently but the awake bar seems to happen more often the longer it is in sleep. Is that meant to happen? What does awake signify? That the screen is on?
background data probably running in the background
like weather updates to it to refresh every 4 hours or something
its weird though, towards the right theres like 2 times where the device is awake for long periods of time :S
brandonpaz said:
Is anybody seeing heavy battery loss during standby mode?
On average my TF is losing between 3.5 and 5% battery in standby mode. I have done a few tests with and with out airplane mode and it does not change.
I currently have an RMA setup with ASUS but I dont want to have to send it back and wait 14 days, so I wanted to reach out here first.
Thanks in advance,
Brandon
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Would you try "Task killer" for decreasing battery loss?
My battery seems to be dying alot quicker now I have the dock. Hopefully a new firmware will come out that'll lower the battery consumption of the dock when its in standby.
I just noticed in the past few minutes that my gmail is pushing to my tablet despite the screen being off and my wifi policy set to off when sleeping. I've also found some issues when it would actually cut the wifi off when sleeping, and when it comes back it doesn't want to reconnect to my router.
My other issue is battery life related. Last night I *believe* I turned airplane mode on before going to sleep and when I woke up 9 hours or so later, the battery was at least 10% down, I think more than that but I didn't take note of it at night. Even if wifi was on, it should've been shut as my sleep policy is that way. Looking through other threads people seem to be experiencing 1% or so battery drain in an hour. The other factor is that I have setcpu installed and a screen off profile that maxes at the second lowest frequency. This morning I installed netarchy's kernel and lowered my setcpu profile so it stays at the minimum frequency when the screen is off.
I'm running Prime 1.3 (didn't do the r2) and have manually removed a handful of the Asus apps that I don't use/want, and I have GPS disabled.
What 'concerns' me is that I have a droid incredible for a while now and with it, I get no battery drain overnight with airplane mode on (at least none that registers) and that's a battery with a fraction the capacity of the transformer. Moreover, I have a very few apps on my tablet whereas my phone has quite a few and basically beyond the stock stuff on the tablet the same apps are on my phone. Also, the battery stats window on the transformer doesn't show any info about apps. I've had my phone on since I woke up, on 3g and I'm at 90% with not much use. And I thought that my phone got meh battery life.
ive had some issues with wifi disconnecting and wouldn't stop disconnecting till a reboot. cant find any news on it. ive tried all firmwares now and still have the issue.
I been having the same issue. Last night I reflashed the 8.2.3.13-20110511 build, to see it it will help. Mine is stock not rooted.
I have the dock and use the pad with most of the time, both are loosing battery life even after I do a complete shutdown. To me it seems it has gotten worse after the 8.2.3.13-20110511 build update. The WiFi is loosing connection when the dock goes dead so I have to reboot the pad to get it to reconnect.
I also have contacted Asus tech. On another thought I really wish in Android you could disable startup apps without rooting.
-M
Was hoping for more replies but my naturally long-winded posts probably scared everyone off...
I wiped my device and installed Modaco's ROM. I didn't touch the stock apps and only things I've installed are Titanium & Tasker. I put together a Tasker profile to kick airplane mode on when the system is put to sleep, and turn it off when unlocked (unless airplane mode was enabled when put to sleep). I also installed Setcpu and setup a profile to keep the CPU frequency to the minimum when screen is off.
I charged to 100% and let it sit overnight. When I woke up I was at 98%, when I got home a little while ago it was at 96%. Note that I hadn't used the tablet other than for a brief minute or two to check the battery stats. As of now I'm showing 15hrs 51mins on battery with a 4% drop. I've had it in airplane mode the whole time. Oppositely, I had my droid incredible at 100% and played Drop7 (great game btw) for at least 20 minutes before going to bed last night, and it was still 100% when I woke up (it was in airplane mode overnight). I find it weird that my droid incredible, with a 1/4 of the battery capacity doesn't drop at all overnight even with a game being played, and the transformer drops 2% in that time idling.
Has anyone wiped battery stats via CWM?
When I setup AutoStart, I noticed the power state event for screen on/off is off by default. I tried turning back on, seems to improve battery on sleep.
Sent from my Transformer TF101
After using my transformer for a couple of months, the battery life amazed me the most. With about 9-10 hours battery and a couple of days sleep time which was very convenient. Also charging time was very fast.
But after updating to 3.2, I've noticed that when I leave the transformer on sleep like I usually do after using it, it would drain to 0% by the end of the day when usually it would only drain like 1-5% before updating it. I checked the processes and it doesn't look like anything out of the ordinary, and I haven't installed any new applications since the 3.2 update.
Anyone else having this kind of problem?
I have the same problem
Sent from my Transformer TF101 using xda premium
I came online to search for the exact same problem if anyone else had. And seems I am not the only one.
Now do you have the keyboard dock as well or just the tablet itself?
My case is that when I have both (tablet and keyboard) fully charged at 100% it will drain out in 18-24 hours whether I use it or not.
Under Location & Security make sure "Use wireless networks" is unchecked - that fixed it for me in 3.2
Reapman said:
Under Location & Security make sure "Use wireless networks" is unchecked - that fixed it for me in 3.2
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Going to give this a try, as Im having this issue as well.
I found that putting the device into airplane mode stopped the battery drain, even though I had bluetooth disabled already, and WiFi policy was set to off when screen is off. Will see how it goes with "Use Wireless Networks" disabled in location settings.
Alternatively, I may write a small app that puts the device into airplane mode when the screen has been off for more than a couple minutes (and disables airplane mode when the screen is turned on)
I have this issue too.
I had mine docked into the keyboard. left it closed and went to work.
When I came back home late, I saw the tablet with 90+% battery and the dock at almost 0%.
Might be the same issue as you guys.
What I did is set the wifi policy to off when screen off.
and I tried again to leave it in the same situation.
Charged it full at night. left it overnight, woke up went to work, and came back. and I checked. Both are still way above 90%.
It makes a big difference for me. =)
I got the battery at 66% this morning and now after no use it was at 18%! I was about to throw my tf out of the window!
Ciela said:
Going to give this a try, as Im having this issue as well.
I found that putting the device into airplane mode stopped the battery drain, even though I had bluetooth disabled already, and WiFi policy was set to off when screen is off. Will see how it goes with "Use Wireless Networks" disabled in location settings.
Alternatively, I may write a small app that puts the device into airplane mode when the screen has been off for more than a couple minutes (and disables airplane mode when the screen is turned on)
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I have done all this yet the drain continues. When I compare the battery drain of my tf101 with my HP touchpad, there is simply no comparison. There is virtually no drain even if I leave my touchpad uncharged for more than a day. On the other hand, my tf discharges battery when closed with the dock as if I am using it.
What gives?
Factory reset helped mine. 14 hours 81% with 3 hours of straight use.
Sent from my Transformer TF101 using xda premium
Reboot
Sent from my Transformer TF101 using xda premium
I got a huge battery drain today again, got my battery from 57 to 3 on the dock and from 100 to 88 on the tablet with less then 10 hours, just for comprasion I got only 7% down on the dock over night (like 9-10 hours) just this morning. when i checked battry use today I saw 63% used by wifi, this wasn't like this in the morning and all I did is just checked my email and sent it back to sleep, that's annoying as hell, i barely use it and it keeps on dying really fast..
Same here indeed the wifi policy set to never sleep-->Big drain wifi policy set to when screen off-->drain very little
Sent from my Transformer TF101 using Tapatalk
Reapman said:
Under Location & Security make sure "Use wireless networks" is unchecked - that fixed it for me in 3.2
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same here,went from extreme drain to normal
It doesn't seem like the power button on the tablet works as well as the one on the dock. If docked, I only lose about %1 per hour.
I've noticed that if I use the one on the tablet, the screen will go dark, but sometimes the tablet doesn't sleep (verified via the battery status). I have the screen set to never timeout and the Wifi set to turn off. Bluetooth set to off.
The tablet lock button seems to be the most reliable and I always get about %1/hour drain when I use that button. Might be just a coincidence.
Is there are "real" sleep mode that we can access? It seems like sleep mode doesn't really sleep, it just shuts down certain items (the screen, bluetooth/wifi). I'm talking about like an S3 state where power is cut to the processor and the only the memory is keep.
If there is a real sleep, it seems like the device has a choice. I want a "Go to the Fok to Sleep" button!
Reapman said:
Under Location & Security make sure "Use wireless networks" is unchecked - that fixed it for me in 3.2
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I did this and it worked for about an hour (cpu spy) but then something woke the tablet and it never went back to deep sleep and wiped out the dock battery in about 4 hours. If I turn wifi off standby life is good. However I woud really like to keep the wifi on and get good battery life.
This working consistently for you?
I was ready to replace my dock. This worked like a charm. I went from 1-5% per hour in sleep to <.5% per hour.
I just figured it out this week. I was running WEP at home and this prevents both of my android devices from sleeping like they should. I know I shouldn't be running WEP but neighbor is wide open so I was too lazy to change. Open and WPA allowed sleep on both devices about 80% of the time in standby and big improvement in battery life. Still keeping my eye on it but difference was immediately noticeable with cpu spy.
Sent from my SAMSUNG-SGH-I997 using XDA App
After further review it appears it wasn't WEP. All was well until I put my laptop and computer back on wifi then both infuse and transformer had inconsistent sleep. I disconnected computers and both android devices sleep again. Updated my router firmware but no improvement. Any ideas?
Update: I believe my router is doing this. Works fine until I connect other wireless devices then drains. There are sporadic reports of this in other forums for dlink dir-655.
Sent from my SAMSUNG-SGH-I997 using XDA App
After 3.2.1 or possibly the Maps update, my wifi stopped powering on after sleep. It would start and stop, even airplane mode would not break the cycle. Frustrated, I turned the location setting back on, reinstalled maps and left it undocked. Woke up this morning. 98% battery. Arg. WTF is going on? This is maddening. The dock drain seems to fluctuate between 8-40% in 8 hours and I get 2% undocked? Is the dock the issue (that would suck).
I'm docking it again tonight. Maybe it was reinstalling maps? This is really frustrating. With 3.2.1 the browser is stable, Skype video now is going. This is the last issue with TF before I can strongly recommend it to my friends.
I am getting some nasty battery drain now too. Approx 30% overnight with wifi off. Im very happy that skype works though.
Sent from my ADR6350VW