Database Users

Fake status of battery

Last night i changed my gt. Today it's changed, 100% percent. And icm goin' to check mail, use internet etc, after 5 mins. "Battery low", 1%. I change it again, after a few min it's back too 100% percent again, and the battery decrease each 10s. I restarted and it said 77%. I didn't get it. Did anyone get the same problem as me and anyone can help me???
Thank you very much!!
Sent from my GT-P1000 using XDA App

Your not alone, i always experience this, i just learned to live with it well until an maybe an update will fix this i think there is a problem with the android system, you can still try to calibrate your battery though it didnt work for me
Sent from my GT-P1000 using Tapatalk

Some expert told me that maybe it's 'cause the changer. Any ideas 'bout it?
Thanks!
Sent from my GT-P1000 using XDA App

hand2leg said:
Some expert told me that maybe it's 'cause the changer. Any ideas 'bout it?
Thanks!
Sent from my GT-P1000 using XDA App
Click to expand...
Click to collapse
It is definately the android system. There is another thread here where the samsung rep says they know about this version of android and the battery issue. My tab went to zero yesterday in ten seconds. It took me a long time to get the battery meter to show it was charging again.

texasreb said:
It is definately the android system. There is another thread here where the samsung rep says they know about this version of android and the battery issue. My tab went to zero yesterday in ten seconds. It took me a long time to get the battery meter to show it was charging again.
Click to expand...
Click to collapse
yep, i second you bro, if a lot of people are experiencing this then it may be due to some bug or something on the system i think its its definitely not the hardware if it is shame on samsung for manufacturing faulty devices, well lets hope for the update
Sent from my GT-P1000 using Tapatalk

If i root my gt and install the battery fixing applications on the market. Does it help?
Sent from my GT-P1000 using XDA App

Well i had the same gave it to the samsung service centre...and they replaced my battery...and now i have no.such problem...So i think its with the battery only...Dont know the cause though...
Sent from my GT-P1000 using XDA App

Has anyone tried calibrating the battery? I just received a Tab for testing and it was used prior. Some battery monitor apps reported less then 12hours available after a full charge. After I calibrated it, i'm getting ~28 hours / moderate use before battery is depleted. What amazes me with the Tab is that when idle (overnight) there is no decrease in battery levels and graphing shows a complete flat line when idle.
I love this device

bdfx69 said:
Has anyone tried calibrating the battery? I just received a Tab for testing and it was used prior. Some battery monitor apps reported less then 12hours available after a full charge. After I calibrated it, i'm getting ~28 hours / moderate use before battery is depleted. What amazes me with the Tab is that when idle (overnight) there is no decrease in battery levels and graphing shows a complete flat line when idle.
I love this device
Click to expand...
Click to collapse
I have done all of the battery recalibrations suggested here on xda to no avail. The only thing that has helped me is plugging in a portable kennsington battery by usb that tricks the battery indicator and it seems to slow down my battery drain.

Said at all, i have to get use to with it, right???
Sent from my GT-P1000 using XDA App

Try doing a resetting on the tab, and do a full charge, I mean let it charge for 8 hrs continuously.
If it can't work, bring it to Samsung for firmware upgrade (takes about an hour), after which do the same, long charging.
Last option, ask for an exchange with Samsung.
Rooting it has never been my option

henrylam said:
Try doing a resetting on the tab, and do a full charge, I mean let it charge for 8 hrs continuously.
If it can't work, bring it to Samsung for firmware upgrade (takes about an hour), after which do the same, long charging.
Last option, ask for an exchange with Samsung.
Rooting it has never been my option
Click to expand...
Click to collapse
Ok. I'll test and report asap. Thanks
Sent from my GT-P1000 using XDA App

Ok. After resetting my gt. It' have the same problem with battery. Maybe i'll have to go to Samsung..
Sent from my GT-P1000 using XDA Premium App

Ok, hope it will work after new fimware upgrades. Mine sure does.
If you can let go your tab to them for a couple of days, you can ask them to check on the status of the battery as well.
Sent from my GT-P1000 using XDA App

henrylam said:
Ok, hope it will work after new fimware upgrades. Mine sure does.
If you can let go your tab to them for a couple of days, you can ask them to check on the status of the battery as well.
Sent from my GT-P1000 using XDA App
Click to expand...
Click to collapse
Can i let my tab go? I dont think so. But i'll try..
Thanks
Sent from my GT-P1000 using XDA Premium App

Hey guys, I was in the same boat (you can see my posts on other threads) and I have tried pretty much everything from flashing rom, resetting, calibrating, and bump charging. Last night I decided to open up the tab and look at the battery, thinking maybe I should buy a new battery to test.
Long story short, I disconnected the battery from the board and let it sit for 15mins before reconnecting. I check every couple hours to see the battery level in android. So far, I only lost 1% for 20hrs in flight mode w/o any app running. I usually lost 20% overnight and would regain that after reboot. So the problem is GONE and the system is reporting the right battery percentage without fake dropping.
I will continue to monitor it and report back, but it looks great so far. Hope this helps other XDA fellows.

Thats actually ive been wanting to do just prick it open, funny though i my problem resolved it self, last night i keep rebooting my tab up to the point it hangs and froze then i left it like that for an hour then i pressed the power button for around 10 seconds to reboot it again, once it booted up it showed the correct percentage, now im still monitoring if the trick went well..
Sent from my GT-P1000 using Tapatalk

shinji21 said:
Hey guys, I was in the same boat (you can see my posts on other threads) and I have tried pretty much everything from flashing rom, resetting, calibrating, and bump charging. Last night I decided to open up the tab and look at the battery, thinking maybe I should buy a new battery to test.
Long story short, I disconnected the battery from the board and let it sit for 15mins before reconnecting. I check every couple hours to see the battery level in android. So far, I only lost 1% for 20hrs in flight mode w/o any app running. I usually lost 20% overnight and would regain that after reboot. So the problem is GONE and the system is reporting the right battery percentage without fake dropping.
I will continue to monitor it and report back, but it looks great so far. Hope this helps other XDA fellows.
Click to expand...
Click to collapse
Hi Shinji, it is quite unbelievable that the tab only drain 1% for "20hrs". But it is great, if opening the tab can solve battery issue. Now, I myself encounter some other new problems, after I solved the sudden drop in battery issue by upgrading to new firmware (e.g. 50% => ask me to shut down). Now, no matter how I charge, it will remain 67 or 70%............
Do you have the instruction to open up the tab, or any link which you can lead me too? Thanks.

Hey henrylam do you charge phone whilst on and how long do you charge for before you get fed up waiting for it to move from 70% and remove charger ?
Sent from my GT-P1000 using XDA App

wildcat777 said:
Hey henrylam do you charge phone whilst on and how long do you charge for before you get fed up waiting for it to move from 70% and remove charger ?
Sent from my GT-P1000 using XDA App
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Click to collapse
I try both, on and off, sometimes it work sometimes it doesn't. After I have done factory reset, it seems ok for first 3 cycles. After that, the problem surfaced again.
Sometimes, it just stop charging at 65 (curvefish battery indicates) but battery icon shows like 85%. I felt like smashing the Tab and get myself a new Ipad. I am thinking to send it again to Samsung this Friday, and let them investigate for a while (hopefully 2 weeks will be sufficient). Damn it, my wife tab has no such issues. She didn't even do an upgrade on her firmware.

Battery drain

hi there
from 2 days there is a big drain battery in my ARC ...
any one have same problme ....
and any suggestion to solve this ?

ringrover said:
hi there
from 2 days there is a big drain battery in my ARC ...
any one have same problme ....
and any suggestion to solve this ?
Click to expand...
Click to collapse
Dont worry too much...Considering if your phone is new, the battery need conditioning. Just use it for a week with full charge cycle, I am sure it will be normal. Also you can check from battery usage, to make sure it's not some apps you installed that caused the heavy drain.

This is standard in the first few days; 4 days into me having mine, I noticed a decrease from 100% to 31% in 6.5 hours without even touching the phone, however now it runs a breeze.
I wouldn't say wait for it to mellow out and it will be perfect (although you can sit it out, regardless of what you do the phone battery will still need to adjust) but in the long run I'd suggest making use of the handy new battery management feature (Home, Menu, Settings, Applications, Battery Use) and also an application called Advanced Task Killer, which will manage applications that are loaded in memory on the phone. Some say this helps, some say it doesnt, but I personally feel it's beneficial to have it installed.

Be very careful if you're running Kakaotalk or Whatsapp - they drink battery power like mad.

Just be careful with running apps and widgets - I've put my WiFi sleep policy to when screen is off too.
Really pleased with my battery life - getting between 18 - 24 hours of pretty heavy use per charge
Sent from my LT15i using XDA Premium App

I'm tired of answering this question... please use the SEARCH feature.

I have the same problem with battery drain... When I restart the phone the problem dispersers for some time... I have only installed a few apps that I have used without problems on my HTC HD2.. I have run a lot of different android roms on HD2 without this kind of problem..
Actual I noticed the battery drain problem from first start on my ARC..
Now I have installed the "Only Battery Widget" and on the graph I can clearly see that the battery drain is lower after a restart.
I don't know when or why the problem appear...

I have the same problem before! However, after uninstall task killer program, disable Bravia engine, install shutupbatterysaver and do a reboot, the battery problem has gone!

I see Whatsapp is always in the "Running" apps list after restart. I don't use it.
I don't have an account and I tried to open the app once but did not register or agree to the terms.
It shouldn't use a lot of battery right?

vincent.hsy said:
I see Whatsapp is always in the "Running" apps list after restart. I don't use it.
I don't have an account and I tried to open the app once but did not register or agree to the terms.
It shouldn't use a lot of battery right?
Click to expand...
Click to collapse
It's installed on mine too but does not use much.
Kakaotalk, on the other hand, accounted for 22% of my battery usage - and I wasn't even using it!!
Uninstalled it.

my 1st proper days usage today and i got 19hrs at which point i hit 15% battery so stuck it back on charge, i was messing with the phone all day, quite a bit of gaming, 3 or 4 videos, pictures net etc, screen on auto, i have no task killer installed... i feel that when ive come out of a game when i check whats running its not there so no need as far as i can see to have 1, pleased with the battery it hasnt yet been through any cycles, this is the 1st time ive properly charged it

The battery drain from first day to third day is extremly different!
First day battery drained about 10% per hour idle,third day 2% only

ringrover said:
hi there
from 2 days there is a big drain battery in my ARC ...
any one have same problme ....
and any suggestion to solve this ?
Click to expand...
Click to collapse
Same here.
I notice there a lot of background services running on the ARC as compared to my Galaxy S and they cannot be stopped (keep coming back) or uninstalled.
I am using Green Power Free set to 1 min ON and 5 mins OFF to see if things get any better.

My Arc drain almost 30% over night with data off. I did a hard reset, it drop only 3%

For that matter I'll have to ask something... Is it detrimental to my battery's health when I charge it while still being halfway full? Does it hamper the total capacity? Because that's what I have to do sometimes because of school... Don't want an almost-empty battery there
Sent from my LT15i using XDA App

x9745 said:
My Arc drain almost 30% over night with data off. I did a hard reset, it drop only 3%
Click to expand...
Click to collapse
Mine is new (less than a week) so shouldn't need hard reset right? Anyway, the Green Power seem to does its job, 68% now after 7.5 hours.

Regii said:
For that matter I'll have to ask something... Is it detrimental to my battery's health when I charge it while still being halfway full? Does it hamper the total capacity? Because that's what I have to do sometimes because of school... Don't want an almost-empty battery there
Sent from my LT15i using XDA App
Click to expand...
Click to collapse
Theoretically Lithium batteries shouldn't be a problem since there is no memory effect. Just do a complete charge/discharge/charge cycle once a month or so to "calibrate" the battery meter.
You should also do it once or twice when new.

One more thing, I am using third party micro usb charger, the phone screen unlock not working!!! Which I cant unlock the phone while i charge!! Just be more careful. Or any friend have this issue?

Hi, it happened to me too. My battery started draining faster. I was not able to figure out which app caused it, may be WhatsTheApp or Evernote. So I took a backup and made a factory reset. Now my battery is back to normal. you can try that. Now I'm getting 2 days even after playing some HD games. Really loving this phone. Hope this helps....

sgsgs said:
Theoretically Lithium batteries shouldn't be a problem since there is no memory effect. Just do a complete charge/discharge/charge cycle once a month or so to "calibrate" the battery meter.
You should also do it once or twice when new.
Click to expand...
Click to collapse
It is new. You mean actually waiting until it turns itself off? Would have to do that.
Sent from my LT15i using XDA App

Best radio signal to use? (battery life)

I can use *#*#4636#*#* and I read somewhere that it can help with battery life if I set a certain antenna from there? I forgot where I read it though, if someone can please let me know that would be great. There are NO rogue apps running, I only have about 10 installed.
The phone is 4 days old, so it could be why but I've battery cycled it twice already (letting it run dead and recharging it for 10 hours). All my widgets are off except weather and that is set to update every 3 hours and it is NOT using GPS. Wifi is off, so is bluetooth. Gps is off as well.
Is anyone using maximum power saver or just the regular nighttime setting for those reporting better battery life? I also uninstalled launcher pro, it seemed to glitch my phone a lot with the google toolbar and also seemed to have a slightly bigger toll on my battery. Also battery health is stating "Good". Is that the best or does it still need more conditioning?

You probably shouldn't change things in there. Look elsewhere to conserve battery.
You didn't note what your battery life is like either. But you should still let the battery charge and drain a few more times before trying to squeak out more battery life by modifying something like this....

bongd said:
You probably shouldn't change things in there. Look elsewhere to conserve battery.
You didn't note what your battery life is like either. But you should still let the battery charge and drain a few more times before trying to squeak out more battery life by modifying something like this....
Click to expand...
Click to collapse
Well I'll give you an example. The phone was unplugged almost 6 hours yesterday, and I used it around 3 hours and 46 minutes max. It got down to 5 percent and shut off. I had my music i was listening to for 25 minutes. I had my IM program on for about an hour, had a 12 minute phone call. Was texting back and forth mainly, and I checked a few things on the browser and exited out. MY IM program uses GPS to get my location but only when I request to do so, then shut the gps off. I force closed it when I was done to be sure it wasn't gonna drain any more of my battery. My notifications are off mainly except for my texts and such. And this was with JuiceDefender on the last half of the battery.

I don't like programs like Juice Defender to be honest. They usually go buggy and drain the battery more than it saves. People just get excited and leave positive reviews.
I'd honestly reset to factory settings in case there was a one-off glitch. Set things up again and use it like you would normally to gauges things. My battery lasted over 40 hours from the first charge.
With results that bad, I wouldn't troubleshoot beyond resetting it. Take it back if that's the case. That's not right. And it's not worth your time.

bongd said:
I don't like programs like Juice Defender to be honest. They usually go buggy and drain the battery more than it saves. People just get excited and leave positive reviews.
I'd honestly reset to factory settings in case there was a one-off glitch. Set things up again and use it like you would normally to gauges things. My battery lasted over 40 hours from the first charge.
With results that bad, I wouldn't troubleshoot beyond resetting it. Take it back if that's the case. That's not right. And it's not worth your time.
Click to expand...
Click to collapse
Thanks. I just got the phone not sure why I would need to factory reset it. Is there a way I can back my data up and such like texts and pics/apps?
Also 40 hours!? Jeeze do you like never use your phone at all? haha. That is insane my iPhone 4 never even got that good of battery life.

tripleh3lix said:
I can use *#*#4636#*#* and I read somewhere that it can help with battery life if I set a certain antenna from there? I forgot where I read it though, if someone can please let me know that would be great.
Click to expand...
Click to collapse
That code just pushes your phone to use EDGE only and not 3G. It can increase battery life if your phone is constantly trying to hold on to a spotty 3G signal, which can be common .

gnahc79 said:
That code just pushes your phone to use EDGE only and not 3G. It can increase battery life if your phone is constantly trying to hold on to a spotty 3G signal, which can be common .
Click to expand...
Click to collapse
Ah, no I have about 4 bars of HSPA+ in my house, I think i'm good on that, thank you!

Did you do the OTA update? seems to have helped a few people with battery life including myself.

Kaoe said:
Did you do the OTA update? seems to have helped a few people with battery life including myself.
Click to expand...
Click to collapse
Yep it's updated I'm wondering if it was the chat program yesterday I was using.. It has notifications on so it was probably connecting 24/7. I'm gonna keep it off today and use regular apps like facebook. Do you guys keep your notifications for those with good battery life?

Kaoe said:
Did you do the OTA update? seems to have helped a few people with battery life including myself.
Click to expand...
Click to collapse
(off topic) is that your atrix? and how did you get your lockscreen to look like that?

Banditlol said:
(off topic) is that your atrix? and how did you get your lockscreen to look like that?
Click to expand...
Click to collapse
It's an application called WidgetLocker. It's quite an amazing application if I do say so myself.

tripleh3lix said:
Yep it's updated I'm wondering if it was the chat program yesterday I was using.. It has notifications on so it was probably connecting 24/7. I'm gonna keep it off today and use regular apps like facebook. Do you guys keep your notifications for those with good battery life?
Click to expand...
Click to collapse
Chat programs are generally notorious battery hogs. Stick with Google Talk.

stewartsoda said:
Chat programs are generally notorious battery hogs. Stick with Google Talk.
Click to expand...
Click to collapse
I've been using PingChat for about a month now and there is no significant battery drain. Very nice and reliable, more than google talk where messages sent would occasionally never be received.

gnahc79 said:
I've been using PingChat for about a month now and there is no significant battery drain. Very nice and reliable, more than google talk where messages sent would occasionally never be received.
Click to expand...
Click to collapse
Generally. I allow that there are some that are not battery hogs. I do know the chat program on my Touch Pro (I forget what it was) would suck my battery dry in an hour or two if left running in the background.

Terrible battery life

Hello everyone, i purchased my Nexus 7 and it arrived in the mail 3 days ago. And as with every other Android device ive ever owned, the batter is absolutely terrible. I get about 2hrs on screen time when browing the web and maybe playing an occasional game. Does anyone have any idea whats going on? Or have any way to help? Thanks so much

That is pretty bad. Try a factory reset. Might be something you installed.

I'd hate to do a factory reset cause I just barely got it set up but..I'll try it anyway tonight
Sent from my SGH-T999 using xda premium

Scoutamis said:
I'd hate to do a factory reset cause I just barely got it set up but..I'll try it anyway tonight
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
Doing a factory reset before installing anything is becoming the gold standard.
Hope it helps you.

I get between 7-9 hours of active use. Sounds like some process is running amok on yours. I didn't factory reset when I bought it either....though I have rooted it since then, but battery life is about the same pre and post root.
You might want to consider a program to monitor battery use to see what's eating it up. Maybe do that before you factory reset it so you don't install the same thing again.

ScandaLeX said:
Doing a factory reset before installing anything is becoming the gold standard.
Hope it helps you.
Click to expand...
Click to collapse
Really? Like as soon as you set up the device, you are suppose to factory reset it? And since im facotry resetting it 3 days into having it, do i have to calibrate the battery again?

ExploreMN said:
I get between 7-9 hours of active use. Sounds like some process is running amok on yours. I didn't factory reset when I bought it either....though I have rooted it since then, but battery life is about the same pre and post root.
You might want to consider a program to monitor battery use to see what's eating it up. Maybe do that before you factory reset it so you don't install the same thing again.
Click to expand...
Click to collapse
Do you have any battery monitoring apps in mind? I would love to see what is eating up my battery

Scoutamis said:
Do you have any battery monitoring apps in mind? I would love to see what is eating up my battery
Click to expand...
Click to collapse
System panel is a good app to find what's using your CPU and better batterystats can help find what's keeping your phone from going to deep sleep. An easy way to see if this is the case is go into battery setting and select the first option(history details). Compare the Awake bar with the screen on bar. Those two should be nearly identical if not then you have a rogue app.

Scoutamis said:
Do you have any battery monitoring apps in mind? I would love to see what is eating up my battery
Click to expand...
Click to collapse
The one I've seen mentioned several times in here is BetterBatteryStats. I just don't want to drop $3.00 on something I don't need. It might help your issue though.
https://play.google.com/store/apps/details?id=com.asksven.betterbatterystats

neotekz said:
System panel is a good app to find what's using your CPU and better batterystats can help find what's keeping your phone from going to deep sleep. An easy way to see if this is the case is go into battery setting and select the first option(history details). Compare the Awake bar with the screen on bar. Those two should be nearly identical if not then you have a rogue app.
Click to expand...
Click to collapse
Alright ill try system panel, and i looked at the battery setting and awake and screen on are almost exactly the same.

ExploreMN said:
The one I've seen mentioned several times in here is BetterBatteryStats. I just don't want to drop $3.00 on something I don't need. It might help your issue though.
https://play.google.com/store/apps/details?id=com.asksven.betterbatterystats
Click to expand...
Click to collapse
Well then, here you go:
http://forum.xda-developers.com/showthread.php?t=1179809

Scoutamis said:
Alright ill try system panel, and i looked at the battery setting and awake and screen on are almost exactly the same.
Click to expand...
Click to collapse
have you flashed any kernels or roms? sometimes this makes the tablet report the wrong battery stats for a bit.
did you run the battery down until it turns off and then give it a full charge? sometimes you have more juice than what is being reported. ive been stuck at 1-2% for over an hour before. Most likely its a rogue app though, system panel and better batterystats should find out what app it is. if they dont then it could be that you have a defective battery...

Been on mine continuously for 3 hrs 18 mins and at 60%. Excellent if you ask me. Next step up in battery life would be Transformer series with dock.

Scoutamis said:
Hello everyone, i purchased my Nexus 7 and it arrived in the mail 3 days ago. And as with every other Android device ive ever owned, the batter is absolutely terrible. I get about 2hrs on screen time when browing the web and maybe playing an occasional game. Does anyone have any idea whats going on? Or have any way to help? Thanks so much
Click to expand...
Click to collapse
Quite the opposite for me; unlike every other Android device I've had (Nexus One, GS2) the battery life is excellent. I watched 720p mkv video on the train yesterday for a good 3 hours, and still had ~70% by the time I got home, from a full charge.
The battery life is excellent, as far as I'm concerned.

Scoutamis said:
Really? Like as soon as you set up the device, you are suppose to factory reset it? And since im facotry resetting it 3 days into having it, do i have to calibrate the battery again?
Click to expand...
Click to collapse
Don't think you needed to calibrate the battery to begin with. I usually get fine battery life without doing anything special.

Something must be causing the poor battery on your Nexus, Yesterday after my N7 was fully charged, I watched the movie Thor for 1hr and 54 minutes n and my battery only dropped to 83%.

I'm at 16 hours and 52 minutes with 3 hours and 44 minutes of on screen time, the battery is at 51%
Sent from my Nexus 7 using Tapatalk 2

neotekz said:
have you flashed any kernels or roms? sometimes this makes the tablet report the wrong battery stats for a bit.
did you run the battery down until it turns off and then give it a full charge? sometimes you have more juice than what is being reported. ive been stuck at 1-2% for over an hour before. Most likely its a rogue app though, system panel and better batterystats should find out what app it is. if they dont then it could be that you have a defective battery...
Click to expand...
Click to collapse
My N7 is completely stock and has never been rooted. I also did do a couple charge cycles which didn't seem to help much. And better batterystats has AudioOut_2 at 38% (while I'm playing music) but other than that it doesn't seem to be a rogue app
Sent from my Nexus 7 using XDA Premium HD app

Download CPU spy from the market to see if the tablet is sleeping properly, and what frequency its constantly running at

Scoutamis said:
My N7 is completely stock and has never been rooted. I also did do a couple charge cycles which didn't seem to help much. And better batterystats has AudioOut_2 at 38% (while I'm playing music) but other than that it doesn't seem to be a rogue app
Sent from my Nexus 7 using XDA Premium HD app
Click to expand...
Click to collapse
Unless you listen to music for over 5 hours or streaming the songs it shouldnt use that much battery. If you can't find a wakelock with better battery stats then it might just be a bad unit.

Ridiculous battery drain on standby

It seems that the battery drain on my newest N7 (RMA'd first one) is waay worse than on the other, I'll attach some screen shots of what I mean.. it may be just the WiFi is using a lot more than the other's :S I left it 4 hours alone with WiFi and the battery drained 20+ % which even with WiFi on seems excessive does it not? Is it possible I got one with a faulty WiFi radio? I will be testing tomorrow (or maybe tonight) to see battery drain with WiFi turned off to compare, because it also seemed to drain fast when I was just out and about with WiFi off :/ worried I have bad battery, deep sleep isn't working right (it is going into deep sleep or at least thinks it is from looking at cpuspy), or faulty WiFi... or just too early to judge XD has anyone noticed battery improve over time ? I forget if I did was a month ago I got the original
BTW first screen shot was taken pretty much right as I was leaving for work, so you can compare the battery drain there..
Sent from my Nexus 7 using xda app-developers app

I doubt it's a bad wifi radio, its probably an app that is syncing like crazy in the background.

I'm currently watching the MediaServer app use a disproportionate amount of battery (14% and rising). I deleted a number of images which must of kicked in the scanner which must be very inefficient.
I also noticed my N7 become very slow at the same time.
Possibly you downloaded a large amount of images/music/etc before putting your device to sleep...
Sent from my Nexus 7 using Tapatalk 2

Toast95135 said:
I doubt it's a bad wifi radio, its probably an app that is syncing like crazy in the background.
Click to expand...
Click to collapse
I really wish I could figure out why maps keeps starting a process.. can you check to see how many instances of maps there are ? In particular one running Prefetcherservice.. as for the other comment, media server is sitting at 6%, android is at 14%, and screen at 67%.. though I did copy a bunch of songs and pictures over after the RMA, is there a way to fix these or should I delete them to see if it gets better ?
Sent from my Nexus 7 using xda app-developers app

Sigh, I might just have a bad battery, or preferably poorly calibrated, since another hour of use, just browsing and such, and I'm down 20% more -_- hope I don't have to RMA again
Sent from my Nexus 7 using xda app-developers app

As a side question.. how hot does your tablet get under normal use? Mine has been heating up quite a bit in the battery section i think with just average on browser use :/

noneabove said:
As a side question.. how hot does your tablet get under normal use? Mine has been heating up quite a bit in the battery section i think with just average on browser use :/
Click to expand...
Click to collapse
Nothing you've mentioned sounds even the slightest bit out of the ordinary. I know a person who thinks they are always sick is a hypochondriac so is someone who always thinks there is something wrong with their computing device a hypo-com-driac?

findmike said:
Nothing you've mentioned sounds even the slightest bit out of the ordinary. I know a person who thinks they are always sick is a hypochondriac so is someone who always thinks there is something wrong with their computing device a hypo-com-driac?
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Bahaha good one I dunno, the problem is that this is literally my fourth N7 since the other three allll suffered from major screen lifting, so maybe I am looking for something wrong just so i can make sure it's perfect... Though I do think the battery life is pretty weak, I think I may have figured SOMETHING out, the only difference between this and my original is that my original had a huge section of the map of my area downloaded, and since I did that maps hasn't started any additional processes.. so good sign ? maybe ? haha

noneabove said:
Bahaha good one I dunno, the problem is that this is literally my fourth N7 since the other three allll suffered from major screen lifting, so maybe I am looking for something wrong just so i can make sure it's perfect... Though I do think the battery life is pretty weak, I think I may have figured SOMETHING out, the only difference between this and my original is that my original had a huge section of the map of my area downloaded, and since I did that maps hasn't started any additional processes.. so good sign ? maybe ? haha
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Yeah this might be a good time to stop looking for trouble and just enjoy the tablet for a while. I drop mine on the charger in the morning and don't ever really think about the battery other than that. Whatever the battery stats say now they won't say in a week and they won't say after you flash to a different ROM. If you have wifi on apps will sync and the tablet will loose it's charge. I'm never far enough away from an outlet to make it much of a concern. So maybe just take a breather, install the Angry Birds and have some fun for a bit. Eventually we'll have ROM's and kernels that make this thing sip electricity but for now I get the few hours a day I need out of it on one charge so I'm set.

findmike said:
Yeah this might be a good time to stop looking for trouble and just enjoy the tablet for a while. I drop mine on the charger in the morning and don't ever really think about the battery other than that. Whatever the battery stats say now they won't say in a week and they won't say after you flash to a different ROM. If you have wifi on apps will sync and the tablet will loose it's charge. I'm never far enough away from an outlet to make it much of a concern. So maybe just take a breather, install the Angry Birds and have some fun for a bit. Eventually we'll have ROM's and kernels that make this thing sip electricity but for now I get the few hours a day I need out of it on one charge so I'm set.
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You think the battery life will get much better than what it is? My only other android experience is my HTC Desire Z which has a horrible battery as it is so it didn't improve much at all with custom roms
Speaking of improved life through ROMs and kernels, have you noticed any kernel providing particularly better battery life ? I'm on trinity right now, no voltage changing, but underclocked to 1.1 ghz from 1.3

Factory reset, see if the problem continues. That's the only way decide if it's a HW problem.
And my N7 uses effectively 0% battery in standby, it was off the charger yesterday for 6 hours and when I started playing around it was still at 99%. I turn off wifi on screen off, however.

Use http://forum.xda-developers.com/showthread.php?t=1179809 to find out what's waking up your phone, the apk is in the second post. Install, charge it up, unplug, leave for 4 hours idle then look at partial wakelocks and alarms.
I saved quite a bit of standby time by disabling location services and Facebook.

If your not using nfc that could save battery?
Sent from my Nexus 7 using XDA Premium HD app

Salty Wagyu said:
Use http://forum.xda-developers.com/showthread.php?t=1179809 to find out what's waking up your phone, the apk is in the second post. Install, charge it up, unplug, leave for 4 hours idle then look at partial wakelocks and alarms.
I saved quite a bit of standby time by disabling location services and Facebook.
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^ do that
I used Better Battery Stats to figure out Google Maps was causing wakelocks. I cleared data in the maps app and now my 7 idles without much battery drain at all.

northbridge said:
^ do that
I used Better Battery Stats to figure out Google Maps was causing wakelocks. I cleared data in the maps app and now my 7 idles without much battery drain at all.
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Haha I actually just read your post in the kernel thread about this and immediately cleared map data, now I'm about to unplug and see what happens!
Sent from my Nexus 7 using xda app-developers app

noneabove said:
Haha I actually just read your post in the kernel thread about this and immediately cleared map data, now I'm about to unplug and see what happens!
Sent from my Nexus 7 using xda app-developers app
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:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.

northbridge said:
:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.
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Well, left it for an hour on standby with wifi on, 0% drain, let's see how rest of day goes !

northbridge said:
:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.
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So it seems like partial wakelock is mostly audioout_2 which i assume comes from me playing a game with music amongst other things?
Alarms says com.google.android.googlequicksearchbox has 50 wakeups, and maps has 38 :S why does maps keep trying to kill me?! and what is the googlequicksearchbox doing waking the tablet up...

Wlan_Rx_wake seems to be the culprit of semi bad battery. Is there a way to prevent the tablet from waking up all the time? Maybe just unsync or turn off WiFi instead?

noneabove said:
So it seems like partial wakelock is mostly audioout_2 which i assume comes from me playing a game with music amongst other things?
Alarms says com.google.android.googlequicksearchbox has 50 wakeups, and maps has 38 :S why does maps keep trying to kill me?! and what is the googlequicksearchbox doing waking the tablet up...
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Click to collapse
When my battery drain was bad I had something like 250+ wakeups from maps under the alarms section in only a few hours off the charger and Maps was showing up as the most common reason for partial wakelocks.
I think AudioOut_2 is normal - Im not sure what it does though. Im now at 8+ hours of standby with 99% battery. Under alarms im showing 138 Maps wakeups and 76 from google quick search box. My drain is all gone now though so i assume this is within normal range. The better battery stats thread and a few other threads on XDA have detailed descriptions of the different battery draining wakelocks and possible remedies. Not all wakelocks are bad though.