Database Users

Battery ran down in standby

I left my nexus one, which I just got on Friday, next to the TV and it was fully charged. When I came back to it about 4 hours later it had turned its self off and wouldn't turn on until I connected the charger. The battery was at 0%, anyone seen anything similar?
I have now left the phone off, connected to an AC charger and will turn it back on only when it's fully charged!

Sounds like you got yourself a defective unit.

Charger it fully then let it completely die. After it dies charge it again fully see if that helps.

Charging via the USB cable does not seem to be very efficient/reliable. Using the AC charger is quite fast, and much more reliable.
Also check the apps that are running in the background, and turn off the ones you don't need. I discovered that the animated wallpaper was quite a drain... since I switched to a static wallpaper image, battery life has improved significantly.

It has the star field wall paper, but I didn't think that would run when the phone is locked and the screen was blanked. I'll leave it to fully charge, using an old nokia charger from a n85.
So the recommendation is to run it tomorrow until it dies then charge in the off state and only turn on when it's fully charged?
I have had a G1 for the last year.

n0ahg said:
It has the star field wall paper, but I didn't think that would run when the phone is locked and the screen was blanked. I'll leave it to fully charge, using an old nokia charger from a n85.
So the recommendation is to run it tomorrow until it dies then charge in the off state and only turn on when it's fully charged?
I have had a G1 for the last year.
Click to expand...
Click to collapse
Yes, and use the charger that came with the N1.

n0ahg said:
I left my nexus one, which I just got on Friday, next to the TV and it was fully charged. When I came back to it about 4 hours later it had turned its self off and wouldn't turn on until I connected the charger. The battery was at 0%, anyone seen anything similar?
I have now left the phone off, connected to an AC charger and will turn it back on only when it's fully charged!
Click to expand...
Click to collapse
I have the same problem. I got the phone approx. 1 week ago. before i go to work, I would have a fully charged phone. during lunch break break, ( about 4 hrs later from fully charged) its below half already! then 2 hrs later, its at to the point where it says connect your charger. Finally, off work, Phone is turned off and dead at 0% battery life. When im working, i dont even use the phone to browse or anything. just check the time on it and put it back on standby. I dont know whats wrong. Ive also rooted the phone btw with MoDaCo's rom. Any suggestions?

It was fulling charged again about 3 hours ago, not I've left it without wi-fi and with a static wallpaper and the battery is still full. I wonder if the wi-fi or the live wallpapers keep running even when the screen is off. I have checked and wi-fi is set to sleep when screen is off :-/

While modern batteries don't have the "memory" problems that cause them to lose life, they can suffer from miscalibration which will cause them to inaccurately report their remaining charge. If they report a very low charge to the phone (when this may not necessarily be true) the phone will probably turn itself off.
To recalibrate your battery, force it to drain completely. Even after the phone turns itself off, turn it on a few times more. I can't guarantee this is good for your phone, but it should get the last of the juice out. Then, when you let it charge, let it charge LONG after it reports being full, at least a few hours, to make sure it's completely full.

Sounds like something isn't quite right with your phone tbh. I have the star field wallpaper, wifi on and it's checking e-mails for 2 accounts every 15 mins.
I've also had some phone calls, been surfing the web, market and generally played around with it since I just got it on friday.
I checked the battery info on the phone now and it's been 15 hours since I charged it and it's now on 46% still. In my (limited) experience the battery seems to hold up pretty good on this phone.

That's the weird thing, it was fine Friday night and Saturday night and that was including quite a bit of playing with around

I received my phone last week. the battery was fine the first four days. after that the same problem stated above happened to me. the battery dies every 4 or 5 hours even in standby with no GPRS, WIFI or BT.
I did a complete wipe-out and the problem was gone.
I think that there were something that is draining the battery and gone with the wipeout.
by the way, i was using MCR and still using it.
thanks.

It has now been sitting for another 7 hours without wi-fi or starfield and the battery is still showing full. I'll now enable wi-fi and see how that goes. Then I'll try statfield later on. I'm wondering if the starfield keeps running even if the screen is blanked.
Actually it's showing 92% in the About page whereas the icon look full :-/

First day with nexus at work. Unplugged it from the main charge at 6:30 am at till 1:00 pm its was turned off. Made 3 short calls, no wifi, bluetooth, or gps and screen set to auto dim.
Only 6 1/2 hours is not long enough. I wish there was like a juice pack for nexus like the iphone. I could buy another battery but cannot be bothered carrying too many bits with me and opening it and changing.
Aslo charging through usb is very very slow.

my phone did this yesterday too, first time ever. I dunno why it drained so fast, something must have kept the screen on in my pocket or something.

Here's what I found.
I got my phone friday, took it off the charger and went to bed. When I woke it up was dead. What I do know is that since I'm with Roger's in Canada I don't get the 3G. I think it was searching for a 3G signal all night and that's what killed it. Try limiting it to 2G and see how the battery stands. I went a full two days without a charge, playing with it every chance I got and wifi turned on.

I'll try the 3g thing as the phone reception is poor in the room I left it. It is at 79% with the star fields wallpaper and wi-fi enabled (sleeps when screen off)

n0ahg said:
It has the star field wall paper, but I didn't think that would run when the phone is locked and the screen was blanked. I'll leave it to fully charge, using an old nokia charger from a n85.
So the recommendation is to run it tomorrow until it dies then charge in the off state and only turn on when it's fully charged?
I have had a G1 for the last year.
Click to expand...
Click to collapse
The star field wallpaper KILLS my battery even when the phone is idle with the screen off, just FYI... I switched to a default regular wallpaper and it has been fine since.

bradyonly said:
Here's what I found.
I got my phone friday, took it off the charger and went to bed. When I woke it up was dead. What I do know is that since I'm with Roger's in Canada I don't get the 3G. I think it was searching for a 3G signal all night and that's what killed it. Try limiting it to 2G and see how the battery stands. I went a full two days without a charge, playing with it every chance I got and wifi turned on.
Click to expand...
Click to collapse
thanks i will try 2g setting tomorrow.

There gotta be something wrong with your phones or some software that is draining it.
Like I said on the previous page I use:
WiFi on
Star Field live wallpaper, with the background image nontheless
Some GPS use
Several phone calls
Some texting
Browsing the web
Screen brightness at maximum
2 email accounts updating every 15 mins
My battery still lives through the day with ease and I'm usually at 40% when I go to bed at around 1 am. I would call HTC or do a thorough check at what software is running.
edit:
Oh and I have 3G on with low reception (1 bar) where I live.

ridiculous battery drain during night/stand-by

hey guys.
lately my Hero seems to be draining battery like crazy at night when the phone is on stand-by. i have the villainrom 10.3 ROM installed, and during the night the only app that was running was "clock". no wifi or mobile network turned on, no GPS etc, and were talking 45-50% battery drain for 8 hours with the phone in stand-by.
why is this happening?

I had the same problem yesterday. In 5 hours my battery drained 80%, so I closed all the apps that was running, but still no change. I then restarted my phone, and after that, it looks normal, but will update if it does it again.
Hope someone has an answer...

Firstly, have you recently flashed a rom and when doing so hard your phone on charge?
If so you will need to run a procedure to reset your battery.
Either
Discharge down to around 5%, go into recovery wipe batt stats, then charge to full with it powered off
or
Charge to full with power on, then power off and charge until green light again. Then wipe batt stats and boot and continue normally.
If you have not flashed a rom recently then this is unlikely to be the issue and something else will be draining your power, e.g. an infinite sync?

Thanks, will try that

thanks lenny, yeah i recently flashed to villainrom but i do believe the problem started a few days prior to it, will try to reset the battery.
how can i check the infinite sync problem?

either by reading a logcat or checking to see if the sync icon is always on and never seems to go away.
Best practice is to untick everything you don't need to sync in the sync menu.

Allrightyroo, I don't see the sync icon and I think all the syncs I do are manually. Did the battery wipe now, I'll see if it helps.
Btw, is there any difference in charging thru USB or wall socket? I might be biased but I feel I get better battery performance when charging with wall socket..

koinnflak said:
Allrightyroo, I don't see the sync icon and I think all the syncs I do are manually. Did the battery wipe now, I'll see if it helps.
Btw, is there any difference in charging thru USB or wall socket? I might be biased but I feel I get better battery performance when charging with wall socket..
Click to expand...
Click to collapse
It will charge quicker from a wall socket but it won't be any better.

Well, I've tried everything but it still drains up to 50% battery during the night, avg. 8 hrs or something. Have turned off background data and sync, wiped battery stats, recharged the way Lennyuk explained etc etc.
what the hell is wrong? My Hero is unusable if I have to charge it as often as this.

koinnflak said:
Well, I've tried everything but it still drains up to 50% battery during the night, avg. 8 hrs or something. Have turned off background data and sync, wiped battery stats, recharged the way Lennyuk explained etc etc.
what the hell is wrong? My Hero is unusable if I have to charge it as often as this.
Click to expand...
Click to collapse
Reflash / change ROM.
And about USB or wall socket. There is big difference. USB gives only 500mA, when the wall socket gives is 1000mA. Feel any difference? Do not charge you battery by USB too often.
P.S.
Check with task killer whats on when you go to sleep. Try to kill tuchflo before standby.

shadow_fi said:
And about USB or wall socket. There is big difference. USB gives only 500mA, when the wall socket gives is 1000mA. Feel any difference? Do not charge you battery by USB too often.
Click to expand...
Click to collapse
Charging through a wall socket makes no difference other than it will take long to charge via USB

Wezternator said:
Charging through a wall socket makes no difference other than it will take long to charge via USB
Click to expand...
Click to collapse
Well, IMHO there is difference, because of we have double ammount of ampers, with the same voltage. Charging with USB is slower, and may charge battery not to 100% (even if phone is saying it is 100%). Ofcourse it will not damage your battery if you use USB.

i had this problem prior to flashing to VillainROM 10.3, i used Modaco 3.2 up until then. checked my taskkiller and nothing was using battery other than "clock".

Do you have the calender widget on your home-screen? That widget is draining the battery like hell. Had also the same problem after i've added the calender widget to my homescreen.... after removing it, everything was normal.

yes i do actually, will remove it and see if there's a difference.

Try removing auto-sync or the calendar sync because if i remember well there is an issue with that with a few roms..

Removed the widget and had 54% battery for atleast two hours now, seems to be the root of the problem.
Can someone explain the uptime and awake time? When I checked my Hero this morning after 9hrs of sleep it said
Up time: 20h 48 min
Wake: 2h 39min
and this is without touching the phone for 9 hrs.

sebxd said:
Try removing auto-sync or the calendar sync because if i remember well there is an issue with that with a few roms..
Click to expand...
Click to collapse
I'm interested as well. Where do you remove calendar sync? I could only find the Google calendar sync, and unticking it didn't change anything. Calendar still appears in Spare Parts on Partial wake usage.
koinnflak said:
Removed the widget and had 54% battery for atleast two hours now, seems to be the root of the problem.
Can someone explain the uptime and awake time? When I checked my Hero this morning after 9hrs of sleep it said
Up time: 20h 48 min
Wake: 2h 39min
and this is without touching the phone for 9 hrs.
Click to expand...
Click to collapse
Up time is the time the phone's been on.
Wake time is the time when you have been using the phone (screen on). When you turn the screen off, wake time should stop until you turn the screen on again. If wake time still goes up even when the screen's off, then there must be some application preventing your phone from sleeping.

Yeah, and that is kinda strange since "clock" was the only open application during that period. What does it say on your Heroes when you press the sleep button and then wake it up and check battery stats? 10 sec?

koinnflak said:
Removed the widget and had 54% battery for atleast two hours now, seems to be the root of the problem.
Can someone explain the uptime and awake time? When I checked my Hero this morning after 9hrs of sleep it said
Up time: 20h 48 min
Wake: 2h 39min
and this is without touching the phone for 9 hrs.
Click to expand...
Click to collapse
I was going so far because of this problem, that i asked htc about a new battery, after i told them that the calender was the source of this problem i asked if they will update it, but i didn't got a clear response... in the end in the response was nothing standing... well maybe they got it with the 2.1 update

[Q] EPIC 8 hour max battery life -- is this normal?

I am LUCKY to get 8 hours of battery life on my brand new stock Epic.. I usually get 4-6 hours. It will NOT last through a normal day of work without putting it on the charger around lunchtime. I take it off the charger around 6:30 AM and I am usually home by 4PM and have to immediately go and charge my phone.
Even if I put it on airplane mode, kill all running applications, and shut the screen off to standby, the phone still seems to suck battery life down very quickly (~5% in 20 minutes on airplane mode, wtf???).. So airplane mode doesn't help.. And I really DON'T want to put it in airplane mode to conserve battery because then my phone is completely useless -- it won't even ring when my wife calls..
Is my battery defective? Please tell me it is... This can't be right..
Are there processes still running that use lots of CPU, even when the stock sprint "task manager" program shows that nothing is running? Is there anything I can do to improve this if I root the phone? How about custom roms? I would really like to run Froyo/Gingerbread anyway.. If anyone has any suggestions to help to make my battery life not such an EPIC FAIL, I would greatly appreciate it.
EDIT: Also wanted to comment on the SLOW CHARGING. With the stock Samsung wall charger, it takes at least a couple of hours to get a full charge. With a USB cable plugged into a PC overnight, it only gets to about 50%. Compared with my previous phone, the HTC TP2, this is really really REALLY slow. It charged in 30-60 minutes and the battery lasted much longer.
I did notice that Samsung only provides a 0.7 amp charger, versus a 1.0A charger for the TP2. Why does Samsung limit the charge current like this? And apparently there is no nueBattery mod driver for android
UPDATE: JuiceDefender looks very promising. Installed the free version and my battery is only down to 95% after one hour. Thanks for the suggestion.

FWIW, I'm getting about the same 8ish hours on mine running DK28. I'm losing about 4% an hour without touching it. I'm seeing some people claiming insane battery life (18 hours with heavy browsing on wifi) I wish I knew how they were managing that.

Wait, it won't even ring when you're wife calls? and you're complaining?

First, the airplane mode means you switch the phone to airplane mode first then switch it back so you won't have time without signal problem which can cause battery drain.
I am able to get 10+ hrs at least by doing the following
1) use airplane mode trick so no TWS
2) use titanium backup to remove a bunch of stock junk
3) use titanium to freeze certain applications (DRM, MediaHub, Qik etc)
4) Have as few applications as possible that constantly pull data

Just yesterday I had 1 day 17 hours before switching
Yesterday when it finally gave up the ghost with the battery indicator blinking i checked my stats.
I had 1 day, 17 hours unplugged. Screen time was around 2 hours and some minutes. I had 45 minutes of talk time.
One thing i will add is I purchased a charger with two batteries off Ebay. Previously when charging with the stock charger as soon as I pulled it off the charger it would read 97%. With the seperate charger it reads 100% for quite awhile before it starts to drop.
And for the record I purchased this charger and two batteries of Ebay for a winning bid of $0.01, plus $9.95 S&H. It was a steal in my opinion.

Unless you are getting near 12 hours of battery life, one of 3 things is occurring:
1) You are using the phone an insane amount
2) You messed something up
3) The battery is defective
For the record, its almost always number 2.
I suggest doing a Factory reset, which will wipe everything off the phone. Then without installing anything or setting your facebook to update every 15 seconds, see how long the battery life lasts. If it is still only 4-6 hours, then your battery is most likely defective.

well of course it won't ring if your wife calls if its in airplane mode. That radio is turned off.

8 hours? That's it? I wouldn't call that normal, but that's just me...
I just plugged my phone in after 4 1/2 days (108 hours) running on a stock 1500maH battery, running Quantum Rom 1.5 (DK17), no special apps running to disable data (aka Juice Defender, etc.), not in airplane mode at all, with the DRM software running, in other words, a more or less 'Stock' configuration (taking into account any differences in the base Rom).
Granted, I barely used the phone in the last 4 days though

muyoso said:
I suggest doing a Factory reset, which will wipe everything off the phone. Then without installing anything or setting your facebook to update every 15 seconds, see how long the battery life lasts. If it is still only 4-6 hours, then your battery is most likely defective.
Click to expand...
Click to collapse
I'll do that. For the record, I've got fbook set to never update, and seesmic once every 6 hrs.

Koadic said:
8 hours? That's it? I wouldn't call that normal, but that's just me...
I just plugged my phone in after 4 1/2 days (108 hours) running on a stock 1500maH battery, running Quantum Rom 1.5 (DK17), no special apps running to disable data (aka Juice Defender, etc.), not in airplane mode at all, with the DRM software running, in other words, a more or less 'Stock' configuration (taking into account any differences in the base Rom).
Granted, I barely used the phone in the last 4 days though
Click to expand...
Click to collapse
LOL at screen on for 52 minutes total. That is 11.5 minutes a day.

muyoso said:
LOL at screen on for 52 minutes total. That is 11.5 minutes a day.
Click to expand...
Click to collapse
Like I said, barely touched my phone in the last 4 days... been feeling a little under the weather so have been at home a lot and in bed doing all my internet stuff and gaming (pogo) on a laptop instead of on my phone.

Since I updated to the leaked Froyo, my battery life has plummeted. It lasts maybe 1/3-1/2 as long as it used to. Turning off 3G has helped immensely though, so that must be the culprit. I used to be able to leave 3G on while at work and make it to bedtime before having to charge it. Or if I shut it off at night (which I usually do), it would make it through my commute to work the next morning. Now, I'm lucky to get through the work day unless I turn off 3G. Huge difference in battery life for me since updating. I'm hoping they fix this in the official release of Froyo.

Well, I've recently found out that if you flash via update.zip while the USB is plugged in, you'll mess up the battery calibration of your device. This is what I did, and i'm pretty sure the cause of my problems. I did find a fix, and here it is:
siliconaddict said:
This is the procedure that works for me:
The following steps should significantly extend the battery life on your phone:
1. Let the battery drain close to empty (5% or less).
2. Connect the phone to the charger (AC or USB, USB is better) while powered on and allow the phone to charge until the notification LED is green, indicating the device is fully charged and untill the voltage is at least 4187mV. A higher voltage like 4192mV or more is even better. Use a tool like Overcharged or Battery Indicator to monitor this. Note that a green notification LED does not automatically mean that the voltage is good too.
A higher voltage means in practice that it will take longer to discharge, a lower voltage means that the battery will discharge a lot quicker! The difference can be quite significant!
3. Disconnect the phone from the charger and power it off.
4. Reconnect the phone to the charger while powered off and allow the phone to charge until the notification LED is green. The notification LED may turn green immediately. Leave it on the charger for another hour.
5. Disconnect the phone from the charger and power it on.
6. Once the phone is powered on completely (has restarted fully) wait 2 minutes and power it off again.
7. Reconnect the phone to the charger while powered off and allow the phone to charge until the notification LED is green. The notification LED may turn green immediately. Leave it on the charger for another hour.
8. Leave the phone on the charger and reboot into the ClockWorkMod recovery menu and wipe the battery stats via -> Advanced -> Wipe battery stats.
9. Disconnect the phone from the charger, restart the phone and start using it as normal.
From then on always let the battery drain close to empty (5% or less) as often as possible and then charge untill the voltage is at least 4187mV. A higher voltage like 4192mV or more is even better.
Normally you will have to do this only once. However, on all Android ROMs, if you flash a ROM while charging or during the first boot screen on, first boot mucks up the levels Android thinks the phone is at, i.e. Android will think you’re at 100% when maybe you’re only 90% or whatever. So in theory you will need to repeat this every time you flash a ROM while charging!
Better is to make sure the battery is charged before you flash a ROM and just remove the USB/charge cable before you flash a ROM. Put it back in (if you must) after the first boot screen (when the custom screen or whatever shows).
Click to expand...
Click to collapse
There is a shorter version that also seems to work well:
vidler said:
So combining the two bits of info we've compiled, the best way to calibrate your battery is as follows
1: Charge phone whilst on till LED is green.
2: Disconnect phone from charger, power it off.
3: Reconnect to charger with phone powered off and allow to charge till LED is green.
4: Disconnect the phone from charger, power it on. Once completely powered on, turn it off again and reconnect to charger until LED is green.
5: Reboot into recovery (back button held at same time as power button) and wipe battery stats.
Battery should now be calibrated.
Click to expand...
Click to collapse
From what I've been told, you don't have to wipe the stats (you need root to do that) but it helps if you can.
I think this may also stem from interrupting the inital charge of the device. I know I did this on both my wife's device and mine (plus my added fubar of flashing with the USB in). Anyway, hopefully I can report some good news tomorrow.
If y'all are really interested in reading a 51 page thread on this, go here: http://forum.xda-developers.com/showthread.php?t=755903

I get 4 or 5 hours if that. I can barely make it to 6. But i probably use my phone more than the average person. Because i take public transportation and browse, stream, email and have 4g connected on my commute back and fourth.

diego1985 said:
I get 4 or 5 hours if that. I can barely make it to 6. But i probably use my phone more than the average person. Because i take public transportation and browse, stream, email and have 4g connected on my commute back and fourth.
Click to expand...
Click to collapse
I've been running JuiceDefender for about 5 hours now and I am loving it.. I still have 75% and I can still receive calls just fine.. It turns off data when the screen is off, but turns it on at scheduled times (default is 1 min every 15 min) so that your emails/twitters/etc can update like normal. The paid version has even more features so I bought it..

Never mind im dumb for not reading his post. Already answered my question sorry.

sleebus.jones said:
Well, I've recently found out that if you flash via update.zip while the USB is plugged in, you'll mess up the battery calibration of your device. This is what I did, and i'm pretty sure the cause of my problems. I did find a fix, and here it is:
There is a shorter version that also seems to work well:
From what I've been told, you don't have to wipe the stats (you need root to do that) but it helps if you can.
I think this may also stem from interrupting the inital charge of the device. I know I did this on both my wife's device and mine (plus my added fubar of flashing with the USB in). Anyway, hopefully I can report some good news tomorrow.
If y'all are really interested in reading a 51 page thread on this, go here: http://forum.xda-developers.com/showthread.php?t=755903
Click to expand...
Click to collapse
Decided not to quote the whole thing but I'm in the process of doing this right now! Took 2 hours to drain my batt from full (running everything and keeping my phone searching for gps constantly in a place where it would also be searching for signal makes quick work of a battery!).

knyque said:
Wait, it won't even ring when you're wife calls? and you're complaining?
Click to expand...
Click to collapse
*golf clap*

diego1985 said:
I definitely need to try that out. Can you still receive calls or no?
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
Yes, with juice defender I can receive calls and my gmail/twitter/facebook/etc. are all already up-to-date whenever I pick up my phone. It works exactly as before, except my battery is not constantly being drained now.
I guess the downsides are that I might not get a new email notification for 15 minutes, and that there is a service running in the background that may cause some slowdown. Neither has been a problem for me so far. I highly recommend this application for Epic 4G owners. Problem solved, basically.

I usually get 12hrs with moderate use (~2hrs with screen on, half of that is usually on the browser). I turn background data off bc I don't have a twitter and I rarely check Facebook so when I do I just use the browser.
I also noticed that wifi burns more battery on DK28, on 2.1 I would hardly lose any battery on standby with wifi, now I get a 3-4% drain per hour... But with 3g on now I lose less then 1% an hour, it used to be a battery hog.

[Q] A500 shutting off overnight while charging!!

I'm having problems with It shutting off overnight while charging. Anybody else having this problem?

bjh2379 said:
I'm having problems with It shutting off overnight while charging. Anybody else having this problem?
Click to expand...
Click to collapse
I just discovered this "feature" this morning as well. -_-

Did u find how to fix this?

I love the feature where the A500's battery doesn't last overnight with the screen off. I didn't think I needed to charge it overnight since the battery was at 95% anyways, so I just set it on the table next to my bed and went to sleep. Woke up this morning and it wouldn't power on. Pretty cool. Wonder what is draining the battery? My DroidX can sit on the same table for almost a week w/o being charged.

I haven't seen it, then again I play music from getting into bed till I wake up so ill try leaving it to sleep and see what happens.
Sent from my A500 using Tapatalk

Me too
Same issue here.

i have not tried the trick that I just found that seems to extend the batery life....I put the tablet in "airplane mode" , enable the WiFi and the battery looks like it is draining alot slower. There is power being used for "cell standby" even though is a wifi only tablet

Same problem here with shutdown on charge. Right now it seems fairly consistent-

I'm experiencing them same thing when leaving asleep for extended periods. It first happened while I was charging... now it happened again when I left for dinner and came back. I don't see any setting options for that

Same here. Thought it was a "feature" to keep from using as much battery.
Sent from my A500 using XDA Premium App

So shutting off notifications seems to stop the problem for me.. except that I don't get notifications At least it boots pretty fast

Lets run some tests, shall we?
bjh2379 said:
I'm having problems with It shutting off overnight while charging. Anybody else having this problem?
Click to expand...
Click to collapse
I don't think they're shutting off, I think they're crashing/freezing during sleep and not rebooting.
This is speculation by me, and could be different for different people.
Finding the problem:
The test.
Night/Bedtime
This is an overnight/while you sleep test and requires about 2hrs. of your time beforehand. Record your figures if you can and post them for debunking. A couple hours before bed and while you use the tablet during the evening, charge it. After 100% and once it's off the charger please don't use it for anything. We want to simulate the sleep process for about 90m before bed. So if you use the tablet even for a quick web surf, plug it in and getting back to 100%. We're going to allow ~3% for errors anyway but we want to be as close to accurate as possible.
90m before you're ready for bed remove the charger. Don't use the tablet simply set the brightness to auto and take note of your battery level and the time. 60m in take a look at that battery charge again and record the time and charge level. 90m in is the last check and after this whether you go to bed or not please don't wake the tablet. Don't worry if it seems to wake and go back on it's own. That's inconsequential for this test. Just put it somewhere that no one will bother it and resist using it until you wake up. Please
Morning/Wake time
Wake it up.
1. Comes on? Record the charge level and time for posterity so we get an idea of idle drain here on the thread. Everyone gets different values. You'll have to run this test at another time as your shutdown/freeze hasn't been reproduced this time.
2. Doesn't come on? Try a power on press. Comes on? Same as 1. Record the charge level and time and post it here.
3. Doesn't come on? Try a power on press. Doesn't come on? Plug it in and power it on. Now do the same as 2. Record the charge level and time and post it here.
I hypothesize a few different scenarios the summary of which is that I don't think they're shutting down, but this is mostly based on the assumption that the batteries are being charged while the unit is frozen. If they do not charge then my entire test would have to be re-designed. I surmise they freeze and don't restart so they either run out of juice or they're actually frozen when you try to power them on and the long press is rebooting the unit, not powering it on. If I am right then we should see that the batteries are drained as if they have been on all night. This is going to be very imprecise, but my idea is that we'll take the charge % of your bedtime check which is a 60m mark check and just times that by the amt. of hours you were sleeping.
So if you were at 95% when you touched the tablet for the last time, this would mean a drain of ~5% give or take ~1% due to your use while checking, per hour. You take that and multiply it by how many hours you've slept and you'd get X x 5 = 40% which leaves the tablet with ~60% battery when you wake up, again give or take 3% for errors, syncing during the night etc.
If you're seeing a somewhat accurate numerical representation of this formula then it means the tab drained all night.
If you're seeing something way off like the tablet still having way more than it should then it means at some point in the night it really did shut down on its own.
People who are actually saying it shut off probably just reboot the tablet without realizing it as it was on the charger when it froze. Since a power off/reboot press of the power button is roughly the same length as a power on press, it's difficult to differentiate sometimes.
Solving the problem:
I have had this happen twice and it was while I left GPS on.
I haven't had an android cell phone yet that hasn't frozen or reboot itself when I left GPS on for extended periods (aka overnight) so the first time this happened I instantly knew to check and I purposely left it on the second time to reproduce and the second time, the tablet ended up rebooting not freezing. If you're not technical the easiest way to know if your tablet reboot during the night is to leave a web page or IM window on the screen or leave music playing.
You may want to skip the above "finding the problem" tests and attempt this "solving the problem" test. As I mentioned, this is all speculation so I'm just trying to get to the bottom of it and I'm sure we can as a grp.
Once you rule out hardware though, then it's a problem. So if it is indeed NOT the GPS then we're at the mercy of Acer and Google because otherwise there'd be just too many factors to track down.

I'm getting this and i'm loosing a ton of battery somewhere in the process too. I think the above poster is right.
I plug in tabby. go to bed. wake up to pee. see tabby is 100% battery. unplug and go back to bed. wake up to go to work and tabby is powered off completely and battery is anywhere between 85%-90% in a matter of 2-3 hours after being unplugged.

Its likely a rogue app I would get a program like advanced task killer watch it and see what apps are loading in background after you kill all apps.look for apps you installed.not so much the ones Acer put on your tab.
With Ti backup freeze the first one you think should not run give it a day.if that's not the issue keep going down the list.
Had a similar issue it was a app I got from amazon.that was So CALLED FREE.they are not so I uninstalled everything from amazon. No more battery drain.
SOME APPS do not fallow the drained android or social rules
Watching the apps to be sure nothing is running CPU cycles allow the time I loose about 2 to 3 % batter life over night with wifi set to stay awake.
This is ideally from 11 pm until around 10 am the fallowing day.
Yes I sleep in alot giggles

re-flashed with Taboonay v.2.0/Richardtrips v.3.3 Kernel and it fixed everything.

JiggaGeazY said:
re-flashed with Taboonay v.2.0/Richardtrips v.3.3 Kernel and it fixed everything.
Click to expand...
Click to collapse
had this on my tab for 2 days and reflashed back to stock because battery life was awful.

is this the battery or the phones issuse?

Hi everyone im new to the forums and recently got my note 3 last week on Thursday. I have the Tmobile version.
When I charge the phone when the device is completely turned off and it fully charges and the red LED turns green, I turn on my phone and my battery percentage shows 99%, but if I charge while the phone is on then itll charge too 100%.
Another issue that I am having is that my battery dies qquicky. I don't know if this has something to do when I first got the phone because I didnt charge it once I had got the phone and once I did get the phone I factory reseted it so that I could go through the initial setup (you know the menus that tell you to put your language, wifi, gmail etc.)
I have everything turned off I have my brightness always set to 0 I don't use auto brightness. I only increase the brightness when im outside in the sun. I have auto syncing completley turned off I only have notifications from apps such as Facebook, instagram and other apps.
I Don't have anything running in the background nor do I have any wakelocks happening.
My battery life right now is at 85% I was using the chrome browser since this morning starting at 7:10am its now 8:48am. Im a heavy user I guess because I use the web Brower a lot. On the second day that I had the device I was using the web constantly it total time was 8 or 8 and a half hours with 5 and a halfs of screen on time.
I really don't wanna go and exchange the device because this is the only issue that im having and I already have everything that I want setup and am accustomed to this phone but if its the devices problem and not the battery than I have no choice but to exchange.
Im hoping that you guys on xda will be able to help me out thanks in advance

I forgot to inform you guys that I also have gps and location services completely turned off aswell

15% for 1.5 hr of continuous surfing...thats not bad...so wats the issue? u wan the batt to last a week of continuous use?
Teleported from my SM-N9005 from The Enterprise

dcracks said:
15% for 1.5 hr of continuous surfing...thats not bad...so wats the issue? u wan the batt to last a week of continuous use?
Teleported from my SM-N9005 from The Enterprise
Click to expand...
Click to collapse
Im not trying to make it last that long lol but shouldn't it last a little bit longer compared to what others are getting and how quickly it decreased this morning? I mainly juss wanna know if this is normal or if its an issue that I need to fix

xavierbaxter95 said:
Hi everyone im new to the forums and recently got my note 3 last week on Thursday. I have the Tmobile version.
When I charge the phone when the device is completely turned off and it fully charges and the red LED turns green, I turn on my phone and my battery percentage shows 99%, but if I charge while the phone is on then itll charge too 100%.
Another issue that I am having is that my battery dies qquicky. I don't know if this has something to do when I first got the phone because I didnt charge it once I had got the phone and once I did get the phone I factory reseted it so that I could go through the initial setup (you know the menus that tell you to put your language, wifi, gmail etc.)
I have everything turned off I have my brightness always set to 0 I don't use auto brightness. I only increase the brightness when im outside in the sun. I have auto syncing completley turned off I only have notifications from apps such as Facebook, instagram and other apps.
I Don't have anything running in the background nor do I have any wakelocks happening.
My battery life right now is at 85% I was using the chrome browser since this morning starting at 7:10am its now 8:48am. Im a heavy user I guess because I use the web Brower a lot. On the second day that I had the device I was using the web constantly it total time was 8 or 8 and a half hours with 5 and a halfs of screen on time.
I really don't wanna go and exchange the device because this is the only issue that im having and I already have everything that I want setup and am accustomed to this phone but if its the devices problem and not the battery than I have no choice but to exchange.
Im hoping that you guys on xda will be able to help me out thanks in advance
Click to expand...
Click to collapse
hmm from my opinion of it is when u charge a phone which is completely off. after you fully charge your phone and unplug the charger it takes more energy to power on the phone.Therefore it is recommended to charge by not switching off the phone or running any apps or games while charging it and let it charge.

MxFadzil92 said:
hmm from my opinion of it is when u charge a phone which is completely off. after you fully charge your phone and unplug the charger it takes more energy to power on the charger.
Click to expand...
Click to collapse
But is it normal and does it happen to your guys device?

xavierbaxter95 said:
But is it normal and does it happen to your guys device?
Click to expand...
Click to collapse
normal in what? off-ing your phone while charging and when you turn back it on from 100% to 99 %?

MxFadzil92 said:
normal in what? off-ing your phone while charging and when you turn back it on from 100% to 99 %?
Click to expand...
Click to collapse
Yea is it? When my phone is completley turn off and its fully charged and when I unplug it and turn it on it shows 99% instead of 100%.

xavierbaxter95 said:
Yea is it? When my phone is completley turn off and its fully charged and when I unplug it and turn it on it shows 99% instead of 100%.
Click to expand...
Click to collapse
it is normal. like i said never ever turn off your phone while charging it as it consume much more energy or power to turn it back on. and for a newer phone always let it die completely to 0% and let it charge fully until 100% without turn off the phone. it takes awhile before the battery being callibrated

It is normal. The GN3 drop from 100% to 99% very fast compared to the GN2.

MxFadzil92 said:
it is normal. like i said never ever turn off your phone while charging it as it consume much more energy or power to turn it back on. and for a newer phone always let it die completely to 0% and let it charge fully until 100% without turn off the phone. it takes awhile before the battery being callibrated
Click to expand...
Click to collapse
I let the battery die down to 1% lastnight and then turned it off b4 it turned itself off. But I read that it was bad to let the battery die down to 0 though.

xavierbaxter95 said:
I let the battery die down to 1% lastnight and then turned it off b4 it turned itself off. But I read that it was bad to let the battery die down to 0 though.
Click to expand...
Click to collapse
its normal. its a battery protection method i first saw in S3 if i remember correctly.
the usage you mentioned earlier seems reasonable to me. you will need to use the phone longer to get an idea of how much battery certain apps will take.
BTW, you can use reading mode to reduce the battery drain even further.
to do that, click on the more settings icon in notification drawer, long press the reading mode icon, turn it on, press the pencil icon then select the app or apps that you use most with screen on. you will notice that the screen gets a red tint when u use this mode, but for me it does save a bit more battery than normal mode.
i use it with whatsapp, music and chrome.
hope that helps!

I let my phone fully die to where it turn itself off and pluged it in the charger and turn it back on once it fully charge I unpluged it and started using it its at 95%, and has been on for 37 mins with 32 min on screen time I updated 3 apps went on facebook and instagram for a quick bit. I dont think thats normal

xavierbaxter95 said:
I let my phone fully die to where it turn itself off and pluged it in the charger and turn it back on once it fully charge I unpluged it and started using it its at 95%, and has been on for 37 mins with 32 min on screen time I updated 3 apps went on facebook and instagram for a quick bit. I dont think thats normal
Click to expand...
Click to collapse
Looks normal to me. My N3 decreases quickly from 100% to 90% then decreases slowly.
I'am not an heavy user : a few calls, a few sms/mms, facebook, twitter, web thru apps like magazine or flipboard, calendar and task usage, mp3 (around 20 min), no gps or location (only if needed), phone mode at night in order to use alarm on morning ...
My N3 lasts 3 days (last time was 3 days et 8 hours !) where my N2 was down after 2 days or less usage.