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Hi all
At the moment I seem to be getting about 10hrs out of my battery that came with me brand new HD2!
I was told to upgrade my radio which i did to 2.08 and firmware which i did to ENERGY ROM 23544 but the battery life is the same, maybe i have a faulty battery!!!!
I just did a Battery Log and need your help in trying to find the problem and hopefully getting me to the point of my phone lasting 24hrs would be good!!!
the phone was put into standby mode and left yet it goes upto 200+mAh when the screen is off
ok i have email checked every 15min
no weather
no location
no facebook or twitter
just emails
wifi off
WMlongbatterylife installed so 2G all the time except when running certain apps which are not in use when in standby, I have emails to use on 2G
just cant understand why it can go to 12mAh in standby but not stay there,(in standby mode is 12mAh high)
ok a little increase but not 250+mAh, i could understand it being every 15mins for the email but its every couple of minutes!!
in taskmanager all that was in it for this test was active sync and arkswitch, plus batter Log v0.2.1.1
Please please help
Battery Log
Battery Test Graph
just in case the test was too small, i did a test on the 15th March which i will also upload just in case it can help, many thanks
15thMarch Bat Test
Way too short indeed. Make one over one whole day, or at least over 50% of the battery, and if possible tell when the phone is in standby and when in use, hard to guess what you're doing from the log.
I did Nothing, the 1st log was the phone in standby, the screen was off so why would it go up and down in the 2nd graph when its in stand by, its crazy that every couple of seconds it goes upto 200+ mAh
the short log and graph are the same time when the phone was in standby!!!
I meant on the longer log, the short one is too short to see much.
You certainly have some program that wakes up the device repeatedly to do whatever...
I have had my phone since december. My experience was also unforgivingly short battery time to start with, just as you have. My experience is however that the battery time has increased more or less continously up to now. Now it may last one full day, through the night and maybe all of next day (with moderate use and no automatic checks). Letting the battery down to 1-3% before charge did speed this process.
Where can I find such Battery Log / graph app ?
i did a bat log test last night when i was sleeping and if you could have a look at it when i post it that would be great i was sleeping so i do not understand why it shows a 150+mAh strange!!
all that is running is emails every 15mins i did a bat log test last night when i was sleeping and if you could have a look at it when i post it that would be great i was sleeping so i do not understand why it shows a 150+mAh strange!!
so to make clear, last night i was sleeping, phone in standby mode but i have emails every 15mins
no weather
no twitter
no FB
no location
wmlonglife installed
as far as i know its just emails are running every 15mins
when i go in task manager all that is there is active sync and bat log
but if i go in processes i see more
Bat Log App
Bat Log running all night when i was sleeping
These are the processes that were running
Wow, your nights are short
Anyway, there's something that prevents your HD2 from going to standby, as there's no "hole" in the log. I was suspecting it was the logging software itself (if it logs, the device must be running, right?)
But I tested it and it doesn't seem to cause trouble, see attached log. When the device is properly off, the log stops.
I also tried without logging but by watching the graph, knowing each square is 15secs by default (3x5), during a 10min standby the graph only advanced 15sec, so the time out of standby is minimal.
kilrah said:
Wow, your nights are short
Anyway, there's something that prevents your HD2 from going to standby, as there's no "hole" in the log. I was suspecting it was the logging software itself (if it logs, the device must be running, right?)
But I tested it and it doesn't seem to cause trouble, see attached log. When the device is properly off, the log stops.
I also tried without logging but by watching the graph, knowing each square is 15secs by default (3x5), during a 10min standby the graph only advanced 15sec, so the time out of standby is minimal.
Click to expand...
Click to collapse
haha yes sad to say last night was short, head hit the pillow at 2am and was up at 6am
but thanks for replying
so like i said i have my emails downloaded every 15mins, could this stop my device going into standby??
i used to have it set up through gmail but with the bad battery time i thought i would try outlook, tried push which got them instantly but that was a shorter battery so now i am trying through outlook but every 15mins like i had before, but still just as bad!!
on all the logs i have done when i press my power key so my screen goes off and i do not touch my phone my mAh just never stays low, sometime over 200+mAh with the screen turned off so my battery just dies in 10hrs!!
as far as i know from the apps in task manager and the processes all i have running is my mail and the needed system processes so i am struggling, i would kill for it to last 24hrs and i never thought i would say that because that is still short i think!!
another 1350 extended battery on its way but i think no matter what battery i have if the phone is using upto 200+mAh in standby then it will just drain it too
please help as i am stuck now
I'd try getting rid of the programs that run (shakeandsave and possibly wmlonglife, one at a time).
If it still fails... well, reflash another ROM with the recommended radio, with prior mtty erase, then a good hard reset after flashing (read the flashing tutorials for those), and try again without installing any program.
Push should use less power as it only turns on and transfers data if needed, not every 15mins for nothing.
I run with data, wifi and push active 24/7, and a 8hr night only eats me 5-10% of battery.
kilrah said:
I'd try getting rid of the programs that run (shakeandsave and possibly wmlonglife, one at a time).
If it still fails... well, reflash another ROM with the recommended radio, with prior mtty erase, then a good hard reset after flashing (read the flashing tutorials for those), and try again without installing any program.
Push should use less power as it only turns on and transfers data if needed, not every 15mins for nothing.
I run with data, wifi and push active 24/7, and a 8hr night only eats me 5-10% of battery.
Click to expand...
Click to collapse
Thanks for that great set of advice
not wanting to sound like a school yard kid being a copy cat but 5-10% sounds great to me, dont suppose i could know what ROM and Radio your running so i could try your setup....please!!!!!
thanks for all your help
Check my signature, the ROM already contains the appropriate radio and it works fine at least where I am.
Since your advice on removing WMlonglife i have a question
that app used to disconnect my internet connection when i finish with the internet or when it checked me email
but now because i do not have the app when i click the top bar on my home page it shows my internet connection and battery and always at the side of the top bar is the clock ticking away saying i have been connected for 13hours and increasing, now yes i have a unlimited internet kind of, its meant to be unlimited but they said its a 3GB limit and when i go over 3GB they will just decrease my internet speed, so i have no problem with it being connected all the time but wont that use my battery????
Nope, being connected all the time has no drawback that I could notice. And as you said they'll bother you if you transfer more than 3GB, time doesn't count.
kilrah said:
Nope, being connected all the time has no drawback that I could notice. And as you said they'll bother you if you transfer more than 3GB, time doesn't count.
Click to expand...
Click to collapse
Excellent, then i will let the time tick away since its not downloading anything unelss its fetching an actual email
in that case it looks like the problem for me was WMlonglife which is crazy since its an app to make battery life longer it did the opposite for me
i unplugged my phone from a full night charge at about 9am and now its nearly 4pm and i am on 88% with push email on and about an hours music and changing setting ang general going through the phone and replying to about 12 emails so far which i have recieved since taking my phone off charge!!
also 3G but no BT or wifi running!
if this keeps up i will easily get through a full day and now i have 2 batteries i think all is good
so thank you, thanks for the fast replies and all your help!!
Christopher
Great, your battery life is even better than mine now
The following thread on the XDA Desire forums was pointed out to me on androidforums by marabuchi. I did what was recommended and everything seems good so far.
http://forum.xda-developers.com/showthread.php?t=666404
"UPDATE APRIL 28 2010: PERMANENT SOLUTION FOUND?: Remove Flickr Sync. Go to Settings>Accounts & Sync>Flickr. Then press remove account at the bottom of the screen and reboot the phone - Please report back in the thread if successful! "
I don't have Flickr sync on anyways haha.
after a week of haveing it I stopped messing with it every 2 seconds... and dont have your accounts update every 15 minutes all it does is eat away our battery... I have all mine set for every2 hours and my battery lasts just fine unless I'm playing a game or something ... I even use slacker radio for over an hour a day and it barely used up 2% of my battery for the day
I realize that not everyone is having this issue specific issue, but this sure helped my battery life.
I am now at 31 hours uptime, 2 hours awake time since the last time I charged my battery. My updates are at 4 hours (I'll normally go into the app and refresh), GPS is enabled, Always Connected is on, and I use the phone pretty regularly throughout the day. I have 5 battery bars currently.
Anyway, helped me, figured someone else might be in the same boat.
Thanks
Didn't change anything for me, my calender was normal.
I get probly like 14 hours max on my battery, gps off, always data off, wifi off, screen low, only thing updating every hour is weather. I mostly text and do some web surfing, seems quite a bit low of battery life.
Gmail or Exchange?
roninld said:
I realize that not everyone is having this issue specific issue, but this sure helped my battery life.
I am now at 31 hours uptime, 2 hours awake time since the last time I charged my battery. My updates are at 4 hours (I'll normally go into the app and refresh), GPS is enabled, Always Connected is on, and I use the phone pretty regularly throughout the day. I have 5 battery bars currently.
Anyway, helped me, figured someone else might be in the same boat.
Thanks
Click to expand...
Click to collapse
roninld, do you sych your email? (gmail or MS exchange or both?) thanks
sniczz said:
roninld, do you sych your email? (gmail or MS exchange or both?) thanks
Click to expand...
Click to collapse
I have Google set to sync gmail, but not contacts/calendar. No exchange, and have Hotmail setup with manual refresh.
As a quick update, battery life for me has still been great with pretty much everything turned on. Going about 2 days before having to charge.
I just got my droid x a few days ago and I'm having problems with battery life. I work 12 hour days at a state penitentiary which cell phones are not allowed to enter the building. My phone is rooted and I have about 8 bloatware apps removed like blockbuster, skype, ect in case that matters at all. My typical day is waking up at 4 AM unplugging my phone fully charged. I get to work at 5 AM and between 4-5AM I prolly send one text and sometimes visit one website. So at 5AM my phone is in standby mode until I take a lunch and come out to my car between 12-2. So the phone is on around 9 hours so far but not used much at all. Today I took my lunch at 1PM and when I pulled my phone out my battery was at 15%. The battery ussage is like 72% cell standby, 14% screen, and like 14% Phone idle. I checked my signal strength at work and it was like 99-102 dBm which I beleive sucks. Also today was very hot 100+F so that might also play a factor but I came from a iphone 4 last week that went through the same daily routine and never had battery problem (of course att may have had better reception at work which used less battery). So what do yall think? Is it because of the poor signal strength that runs the battery down within that time even though its in standby? Is there a problem with my phone?
I know this isn't really a fix per se, but any reason not to put it in airplane mode?
gefahr said:
I know this isn't really a fix per se, but any reason not to put it in airplane mode?
Click to expand...
Click to collapse
yeh thats what Im going to try tomarrow. Just weird my wife has the same phone and in a full day of her using her phone it still has 70% battery life when Mine is in standby all day and it dies. But I do work at a prison out in the middle of nowhere and im sure the reception it very bad but i didnt think that would cause a phone in standby to go from 100% to almost dead without using it. Guess ill figure it out tomarrow when I try airplane mode.
Try juice defender
Sent from my PC36100 using Tapatalk
Try turning off GPS. That made my standby mode last 10x longer.
Just a thought are you using handcent? I was until 2 days ago after do some tracking it appears that it was not acting well with something and my battery died very quickly. Since my wife has it on her phone as well I am guessing it is with something else I have DLed but since my wife has not gotten many apps I have a hard time finding out what it might be. But changed to chomp yesterday and at the end of a 16 hour day while taking 130+ pics along with texting browsing ect was at 60%.
Are you using an exchange account to sync email? I found that when I leave the exchange email sync set to "push" or "as arrive" (or whatever that setting is) it totally drained my battery. However, when I set it to sync every 15 min my battery life improved probably 2x.
Sent from my DROIDX using XDA App
battery usage all depends how the user phone is setup, if you have email clients with push activate, that will drain battery, having gps location on will drain battery, screen brightness will drain battery, widget that update though internet(3g, edge) will drain battery and etc; take all that into account and try out the battery manager on the phone that turns off data connection after 30mins of inactivity.
I have found the solution for MY large battery drain:
The problem has been, that my phone used 5% of battery per hour when it’s merely lying around. The battery graph was a straight, quickly decreasing line. So the culprit was not something that happend from time to time but always.
One very disturbing thing: The indicators below the battery graph shows when phone, Wifi and the screen were on. In additions it shows when the phone has been awake.
Even if the screen was off and I did not touch the phone, the „Awake“ indicator constantly showed every minute for a very short time. So the phone never went to sleep, it woke up constantly all the time. Sorry, unfortunately I don’t have a screen capture for this.
Deactivating automatic updates for applications and setting the Emails to sync never didn’t help. I even erased all the Samsung crapware from the system folder, but to no use. The battery died after one day of not doing anything with the phone.
Then I deactivated syncing of the contacts and the calendar for my WindowsLive-Exchange account and the battery drain stopped. I now have less than 1% per hour (see screenshot) when the phone is simply lying around.
So, for me the culprit is the syncing for contacts and calender via Exchange. Unfortunately there is no option to set the sync interval for these.
- Anyone can reproduce this issue?
- Is this just a problem with WindowsLive Exchange or does this happen with other Exchange accounts too?
- Is there a possibility to set the sync interval for contacts and calendar (somehow, maybe via a config file)?
There seems to be something seriously different if not broken in GB 2.3.3. Apps that work perfectly fine in Froyo are keeping GB 2.3.3 from going to sleep. I've isolated several apps that either keep the screen from shutting off or keep the device constantly awake even when it it's no longer running/cached/screen is off. And, these are programs that work perfectly fine in Froyo and do not cause idle drain. Wonder if this is something 2.3.4 addresses...
Sent from my GT-I9100 using Tapatalk
I have frozen:
social hub, email (i use another one), and few more programs that I dont use but noticed that they stay on without any reason,
if 3G or wifi is ON battery drain is prery bad, I guess this is a bug in 2.3.3 as cmd512 said.
Last night I turned off wifi and 3g and made sure that wifi share + manager are off (they can be turned off easily if u untick "use wifi" in location settings menu)
so with everything off for 7 hours sleep (dont rly need my phone while sleeping) battery was down 2% only :O
the moment I turn on 3G Android OS use jumps to the skies :X
skycamefalling said:
I have found the solution for MY large battery drain:
The problem has been, that my phone used 5% of battery per hour when it’s merely lying around. The battery graph was a straight, quickly decreasing line. So the culprit was not something that happend from time to time but always.
One very disturbing thing: The indicators below the battery graph shows when phone, Wifi and the screen were on. In additions it shows when the phone has been awake.
Even if the screen was off and I did not touch the phone, the „Awake“ indicator constantly showed every minute for a very short time. So the phone never went to sleep, it woke up constantly all the time. Sorry, unfortunately I don’t have a screen capture for this.
Deactivating automatic updates for applications and setting the Emails to sync never didn’t help. I even erased all the Samsung crapware from the system folder, but to no use. The battery died after one day of not doing anything with the phone.
Then I deactivated syncing of the contacts and the calendar for my WindowsLive-Exchange account and the battery drain stopped. I now have less than 1% per hour (see screenshot) when the phone is simply lying around.
So, for me the culprit is the syncing for contacts and calender via Exchange. Unfortunately there is no option to set the sync interval for these.
- Anyone can reproduce this issue?
- Is this just a problem with WindowsLive Exchange or does this happen with other Exchange accounts too?
- Is there a possibility to set the sync interval for contacts and calendar (somehow, maybe via a config file)?
Click to expand...
Click to collapse
Hmmm..it could be. I will try this also. First I just take the contacts out, because that is not so necessary for me. Calendar is pretty necessary for me and emails are a must. If I have to take the calendar out, then so be it. I will manually sync it once a week then.
By the way, I just noticed that with my gmail account the sync icon is constant in the calendar.
Now when I unchecked it and checked back it went away after a while.
I am not sure if it was sycning all the time without luck. Lets see.
I think calendar synch is on of the probleme. With calendar sync my phone drain 5% per hour in idle mode without 1% by one or two hours.
It's quite strange that there's quite a lot of these threads now all saying about how bad the battery is but I'm amazed by how good the battery is. I don't use my phone a huge amount especially at work and when I get home I use it for a quick web browse and the occasional text message and phone call. Most days I will still have 80% or more left by 23:30 having been on since 07:15. Today I checked my phone at 12:30 and the battery had only gone down 1% in just over 5 hours. All I did with it from 07:15 was occasionally take it out of sleep but not unlock it to check for any notifications. Since then I've been using the web (data) for about half hour or so, an hour of music listening and texting and right now I have 77% left after 12.5 hours off charge. Therefore I think my SGSII has the best battery life I could ask for.
AvRS said:
It's quite strange that there's quite a lot of these threads now all saying about how bad the battery is but I'm amazed by how good the battery is. I don't use my phone a huge amount especially at work and when I get home I use it for a quick web browse and the occasional text message and phone call. Most days I will still have 80% or more left by 23:30 having been on since 07:15. Today I checked my phone at 12:30 and the battery had only gone down 1% in just over 5 hours. All I did with it from 07:15 was occasionally take it out of sleep but not unlock it to check for any notifications. Since then I've been using the web (data) for about half hour or so, an hour of music listening and texting and right now I have 77% left after 12.5 hours off charge. Therefore I think my SGSII has the best battery life I could ask for.
Click to expand...
Click to collapse
Really depends on what apps you have running, as you can see from my original thread on this "Awake all the time during idle" issue:
http://forum.xda-developers.com/showthread.php?t=1094666
But in general, agreed. Once I got rid of that bug, the device has been fantastic with battery life. And, for a stock ROM, that's damn impressive!
cmd512 said:
But in general, agreed. Once I got rid of that bug, the device has been fantastic with battery life. And, for a stock ROM, that's damn impressive!
Click to expand...
Click to collapse
I fully agree. Now that I don't have the "wake-up" issue anymore, the battery lifetime is almost as good as the Omnia7 -that's damn impressive for a modern Smartphone with such a hardware!
For me, I turned off my wifi, gps and "my location". And most importantly, my applications are not running when it is on idle. Go to task manager by holding the home folder and click exit all. Or you might try to clear the ram memory.
i have turned off gps, wifi and syncing but still getting battery drains can´t even last for a whole day. But I installed Litening ROM just now and see if this helps . I was on KE2 before flashing custom rom
skycamefalling said:
I have found the solution for MY large battery drain:
The problem has been, that my phone used 5% of battery per hour when it’s merely lying around. The battery graph was a straight, quickly decreasing line. So the culprit was not something that happend from time to time but always.
One very disturbing thing: The indicators below the battery graph shows when phone, Wifi and the screen were on. In additions it shows when the phone has been awake.
Even if the screen was off and I did not touch the phone, the „Awake“ indicator constantly showed every minute for a very short time. So the phone never went to sleep, it woke up constantly all the time. Sorry, unfortunately I don’t have a screen capture for this.
Deactivating automatic updates for applications and setting the Emails to sync never didn’t help. I even erased all the Samsung crapware from the system folder, but to no use. The battery died after one day of not doing anything with the phone.
Then I deactivated syncing of the contacts and the calendar for my WindowsLive-Exchange account and the battery drain stopped. I now have less than 1% per hour (see screenshot) when the phone is simply lying around.
So, for me the culprit is the syncing for contacts and calender via Exchange. Unfortunately there is no option to set the sync interval for these.
- Anyone can reproduce this issue?
- Is this just a problem with WindowsLive Exchange or does this happen with other Exchange accounts too?
- Is there a possibility to set the sync interval for contacts and calendar (somehow, maybe via a config file)?
Click to expand...
Click to collapse
I have noticed the same issue trying to sync to a exchange 2003 account. It seems that my calendar is syncing either every minute or about every 20 minutes. I also noticed the same issue with my gmail calendar. I have tried two different phones and reset each one several times. The same problem keeps occurring. I may have to download touchdown for email, contacts and calendar. It just sucks because then I will have two calendar applications (one for work and one for home). This is very frustrating.
Are you still having issues with echange calendar sync?
After updating to KE7, I have noticed that every time I receive an exchange email the screen wakes up for a second or two and goes to sleep again.
Didn't occur on previous firmware. Anyone else with this issue and a possible fix?
Is social hub the best solution for IM? I would like to have Yahoo and MSN messengers on always, so should I use another less power hungry client? When people mention calendar synch is it google calendar they're talking about? My google calendar is important for me, so how to optimize it?
brademcee said:
Are you still having issues with echange calendar sync?
Click to expand...
Click to collapse
Yes, unfortunately. I am now syncing manually with a switch on the homescreen.
I am now hoping for Android 2.3.4 to fix this issue.
Have a look at comment #290:
http://code.google.com/p/android/issues/detail?id=11126#c290
I have an X10i with Jerpelea's CM7 with custom kernel and that had a very annoying deep sleep issue (the phone never went deep sleeping) which caused the battery to drain very quickly, but Temoi19 found out that by disabling automatic time updates and manually selecting the operator, made the phone to deep sleep. So I took a shoot and tried the same trick on my new Galaxy S II and now when idle my phone barely eats power. After over an hour after unplugging I was still at 100%. I don't know if I am just lucky, but it is worth a try
Sent from my GT-I9100 using XDA Premium App
I also have this issue with my sgs2. I looked into the exchange settings and there is the option to change the syncing. It was set to push, I now i changed it to manual and will report back the results tomorrow. The drain in general only occurs when mobile data is enabled here. Didn't try with wifi yet.
Sent from my GT-P1000 using XDA App
pik1 said:
I also have this issue with my sgs2. I looked into the exchange settings and there is the option to change the syncing. It was set to push, I now i changed it to manual and will report back the results tomorrow. The drain in general only occurs when mobile data is enabled here. Didn't try with wifi yet.
Sent from my GT-P1000 using XDA App
Click to expand...
Click to collapse
You can leave the syncing to push, it's just for the EMails and they're working fine.
I'd propose to disable the calendar and contact sync in Einstellungen -> Konten -> Automatisch synchronisieren
skycamefalling said:
You can leave the syncing to push, it's just for the EMails and they're working fine.
I'd propose to disable the calendar and contact sync in Einstellungen -> Konten -> Automatisch synchronisieren
Click to expand...
Click to collapse
according to the logs if there are no changes in contacts or calendar both will be synced only once per day. so this should not be the issue.
How much battery life are you guys getting on your Tab Pro 8.4? I bought mine couple of days back and I felt it's disappointing.
metaldood said:
How much battery life are you guys getting on your Tab Pro 8.4? I bought mine couple of days back and I felt it's disappointing.
Click to expand...
Click to collapse
Mine has been fine. But, i use it to read and browse the web. I rarely make it down to 50% each day.
Cheers,
Rich
rholm said:
Mine has been fine. But, i use it to read and browse the web. I rarely make it down to 50% each day.
Cheers,
Rich
Click to expand...
Click to collapse
What's your on-screen time in battery stats? Or maybe post a screenshot of your battery usage.
metaldood said:
What's your on-screen time in battery stats? Or maybe post a screenshot of your battery usage.
Click to expand...
Click to collapse
It shows 2 hrs 10 minutes. I have 67% battery left.
Cheers,
Rich
What bugged me was the disappointing battery life when the screen was turned off (not completely powered off of course). Even in airplane mode it would die in a day or two just sitting around. Battery stats showed Android System and OS were killing the battery. I never figured out if there was a setting or something to fix it.
Instead I loaded Cyanogenmod 11 on it a week ago and now it uses only 3% of the battery a day when I'm not using it. I don't miss any of the Samsung extras.
sbleacher said:
What bugged me was the disappointing battery life when the screen was turned off (not completely powered off of course). Even in airplane mode it would die in a day or two just sitting around. Battery stats showed Android System and OS were killing the battery. I never figured out if there was a setting or something to fix it.
Instead I loaded Cyanogenmod 11 on it a week ago and now it uses only 3% of the battery a day when I'm not using it. I don't miss any of the Samsung extras.
Click to expand...
Click to collapse
Something must be keeping it awake. My tab has excellent standby battery life.
Doesnt lose more than 5% in a day. I do have the setting to turn wifi off when in sleep mode though (unless plugged in)
Battery life on the whole varies. Video watching through the stock video player drops about 10% an hour. Surfing would depend on your browsing habits. Gaming drains close to 20% an hour. Pretty standard. That along with the excellent stand by time means I get about 2 days of use on a charge.
Every day at work telephony, internet, email, IMO 24hours, 24hours Bluethooth Gear 2 connect. Dinner consists of my tablet battery 55%. For me life is great. My tablet root and frozen Samsung Apps (Bloatware) ... XDA .... Try the Nova launcher from the Play Store to Improve speed. Set it as your default launcher then Disable / Turn Off;
Flipboard, MagazineWidget, S Voice, Samsung Apps, Samsung Apps Widget, SapaMonitor, Screen Saver, World Clock, and (Hancom, Office for Android Share, Hcell, Hshow, Hword, Updater, Viewer Launcher, and Widget) if you do not plan on using it.
We will be adding Quadrant test 24,000 points on the original ROM.
Play google baterry doctor.
Battery life is good its an app thats draining the battery.
Sent from my SM-T520 using Tapatalk
208
rkial said:
Something must be keeping it awake. My tab has excellent standby battery life.
Doesnt lose more than 5% in a day. I do have the setting to turn wifi off when in sleep mode though (unless plugged in)
Click to expand...
Click to collapse
Yes it was using as much battery as watching a movie with the screen on. Something was terribly wrong with it. I think this behavior started after a software update I got from Samsung.
I turned everything off including Wifi and it was still eating the battery while sitting there with the screen off. I have never seen that with any Android device I've ever owned.
But I'm happy with Cyanogenmod. Battery life is outstanding now.
My battery life was mediocre, and then I put cyanogenmod on, and it went to dreadful. With the tablet at 100% and OFF, untouched, it would be 20% down in 10 hours. In contrast, my iPad loses maybe 3% in that time, doing the same thing - tracking email.
I ran a wakelock tracker and noticed that Exchange Services has it awake about half the time. The total time. Like in 10 hours Exchange had it awake (with screen off) more than five hours. Effen ay. Something is seriously screwed up with how Cyanogenmod's Exchange talks to the two Exchange services I use. Switching from Push to "5 minutes" has helped significantly; Exchange is still the worst culprit, but now only by a factor of four rather than a few hundred.
Ideally what I'd like is the new Exchange apks modified to prevent admin and fixed to be less wakelock intensive.
rkial said:
Something must be keeping it awake. My tab has excellent standby battery life.
Doesnt lose more than 5% in a day. I do have the setting to turn wifi off when in sleep mode though (unless plugged in)
Battery life on the whole varies. Video watching through the stock video player drops about 10% an hour. Surfing would depend on your browsing habits. Gaming drains close to 20% an hour. Pretty standard. That along with the excellent stand by time means I get about 2 days of use on a charge.
Click to expand...
Click to collapse
What is your on-screen time during the 2 days?
Wotta said:
I ran a wakelock tracker and noticed that Exchange Services has it awake about half the time. The total time. Like in 10 hours Exchange had it awake (with screen off) more than five hours. Effen ay. Something is seriously screwed up with how Cyanogenmod's Exchange talks to the two Exchange services I use. Switching from Push to "5 minutes" has helped significantly; Exchange is still the worst culprit, but now only by a factor of four rather than a few hundred.
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Cyanogenmod has their own version of Exchange?
Our Exchange servers at work are ridiculously slow and unreliable. They can take two minutes to return your mail which is a major drain on your battery if it's set to check it every five minutes and you get a lot of mail. Sometimes they'll just stop responding and leave you hanging. The IT people just tell you to keep trying and you'll get your mail eventually.
metaldood said:
What is your on-screen time during the 2 days?
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Dunno.. 7-8 hrs I guess. Screen on time really doesnt mean much without any context.
I can get 12hrs+ watching videos on 20% brightness. I can kill it in 4 hrs playing games at 100%.
Like I said, the standby is excellent. Drains less than 10% in 2 days. So for me, I have about 90% to use over 2 days.. and from my experience,
video drains less than 10%/hr
gaming ~20%
reading books drains less than video.
General surfing, mails, social networking uses between 10-15% depending on how you are using it.
My brightness is usually around 40%. Goes up rarely when I'm using it bright conditions. Goes lower when I'm reading late at night
Should give you an indication of what you can expect from the battery depending on your usage..
Mine drains about 10% per hour while constantly using the device for light tasks, such as reading, web surfing, and watching some YT videos here and there. That increases to about 15%/hour when I watch movies. So after watching a 2 hour movie, I expect to see about 70-75% of battery left. Now if I'm listening to music for an hour at the gym with the screen turned off, it only drains about 3%.
At first, I thought that was pretty mediocre and felt disappointed. But I've taken my tablet with me on many trips and never had it die (usually just close to 20%). I rarely ever use my external battery pack. I know this will vary depending on how long the trip is and how much you're using it, but I'm just saying that it meets my needs despite having a lower battery life compared to some other tablets. I do all I can to extend it, but I don't have to constantly watch it.
Last night I charged the tab 100% and with Wifi off (sync for 1 min every hour. )
Today the battery is at 71% - On battery 13hours - 44 mins
27% Android OS
24% Google services
13% Android System
8% Onscreen time - 20 mins
Should I flash CM to fix this?
metaldood said:
Last night I charged the tab 100% and with Wifi off (sync for 1 min every hour. )
Today the battery is at 71% - On battery 13hours - 44 mins
27% Android OS
24% Google services
13% Android System
8% Onscreen time - 20 mins
Should I flash CM to fix this?
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CM won't fix that. Install Better Battery Stats or Wakelock Detector to nail down the precise problem. If you're using them, it could be Exchange Services or Google Drive (yeah, that turkey wakelocked me to oblivion!), at which point you at least know what to attack.
You can find BB on XDA here and WakeLock Detector on XDA here, both are also in the Play Store.
Wotta said:
CM won't fix that. Install Better Battery Stats or Wakelock Detector to nail down the precise problem. If you're using them, it could be Exchange Services or Google Drive (yeah, that turkey wakelocked me to oblivion!), at which point you at least know what to attack.
You can find BB on XDA here and WakeLock Detector on XDA here, both are also in the Play Store.
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Google search with 23 mins of wake time and Gmail with 6 mins.
Currently Deep sleep is 14 hr 26 mins. Total time is 17h 5m. Awake is 2h 39m. Screen on time - 27mins.
I added the google now widget a couple of weeks back and that caused some wakelocks and overnight battery drain. Removed it and didn't have the problem.
The battery life is pretty good for me. Was out a lot, so had wifi off for large parts.. watched videos (from device), read some books, played some Asphalt (not much.. around 30 mins) and some browsing/mails..
Got 11 hrs screen on over 2.5 days and still have 15% left.
Yeah was indoors so the brightness was never over a third (~30%) and reading books really doesnt drain much battery(especially if its at night and you turn the brightness further down)..
I'm not saying people will get 10+hrs screen on with their device and usage constantly.. 8hrs would be realistic.. but the point is, the battery is a lot better than I had originally expected.
Wotta said:
I ran a wakelock tracker and noticed that Exchange Services has it awake about half the time.
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I have this same problem - except my GTP is 100% stock, unrooted. I can go into Settings/Battery to see that Exchange Services is chewing my battery. It will die in less than 24 hours, even if I don't use it - as long as it has a WiFi connection. I think if I turn off WiFi, it will stop attempting to sync and the battery will last "normally". I don't know for sure, though, as I haven't tried. I'm not interested in a tablet with no network connection or even without my email.
I'm going to cut a VERY long story short (at least, here) and say that I have spent several hours logging the ActiveSync traffic between my tab and my server, poring over the logs, and I have identified the problem. It's one particular item that is failing to sync, which causes the tablet to retry the sync every 1 second. The sync failure causes the server to log an internal server exception every time - despite the ActiveSync requests from the tablet being correct. I also found a Microsoft KB article that appears to address this exact problem, and MS has a hotfix available for it.
I have talked to Tech Support at my hosted Exchange provider and they have confirmed with their operations staff that my server does not have the MS patch that is referenced in the KB article installed. Unfortunately, they are giving me a bit of the runaround on installing it. I only have one mailbox hosted with them, so I have no pull. They sound like Verizon. "We have to thoroughly test this update in our lab before we can install it on your server." And "nobody else has reported this problem and we can't put too much time into a problem that only one user is experiencing."
So, I am now just waiting for them to install it on my Exchange server and see if it really does fix the problem for me. If it does, I will be posting about it on XDA and the AC forums, as a Google search showed me that a lot of people, with a lot of different Android devices, have this same problem and nobody seems to know what's really going on or how to fix it. I will try to remember to post back in the GTP General subforum specifically, too, so stay tuned.
My battery life seems to be getting better as the battery gets some more charges on it.
Sounds basic / silly, but i simply put mine in battery saver mode and that made a big difference with little effect on performance