Battery Life, an interesting observation - Galaxy Note GT-N7000 Q&A, Help & Troubleshooting

Hi devs, as I know there are many people complaining about battery life, I wanted to share an observation and also ask for an explanation behind it... My Note used to last around 2 days when I got it but after updating to JPLA1, it started to die on me in less than 24 hours.
I didn't want to factory reset. One day the battery died on me completely and phone turned off. After recharging, I'm getting about 1% battery drain per hour on standby... if I chargr the phone before it shuts off due to an empty battery, I'm back to 4-8% battery drain per hour on standby (all other settings the same)... I have been able to reproduce this effect many times... Is this a kernel issue or do I need a new battery?
Sent from my GT-N7000 using Tapatalk 2

Related

Battery Drains during Standby Mode

Does anybody experience a 3% to 5% battery drain just a few minutes after charging the battery to 100%? It has already reached 100% so I already unplugged it from the charger, but then I noticed after a few minutes, it went down to 97% already, and then in 10 minutes, it's already down to 96%. In 3 hours, it's down to 84%; in 7 hours, it's down to 38% and that's just on standby mode with Wifi/Bluetooth OFF, 3G OFF, GSM only. I've been experiencing this problem for the past few days now. I've already conditioned my battery, charging it to a full charge (100%) after draining the battery until it shuts the phone off. I only charge the battery while the phone is off and usually it takes about 3 to 4 hours maximum to charge it to 100%.
The longest time it reached was 12 hours (battery unplugged from charger) and that is with light use, such as Wifi is only on for a couple of hours, so basically just 2 hours web browsing and skype, 10-20 text messages and 30 minutes to 1 hour browsing the photo gallery or watching videos. No phone calls and 3G is off. The rest of the day, the phone is just on standby mode. I only have at most 10 widgets on the home screen. I have Avast Antivirus running in the background.
I am currently using Easy Battery Saver, Easy Task Killer, GO Task Manager and Battery Monitor Widget. I've uninstalled Juice Defender since I don't think it helps that much when it comes to the battery drain. Currently, the power saving option (available on Note) is enabled at 50%.
Wifi and Bluetooth: OFF when not used
Use Packet Data and Data Roaming: OFF
Network Mode: GSM Only
Auto Sync: OFF
Auto Brightness (Display): OFF and scale is at the most left
Animation (Display): No Animations Shown
Screen Timeout: 30 seconds
Use Wireless Networks/GPS Satellites: OFF
Power Saving: ON at 50%
STOCK ROM (not rooted)
Android OS: 2.3.6
Baseband Version: N7000XXLA4
Kernel Version: 2.6.35.7-N7000XXLA6-CL907341
[email protected] #2
Build Number: GINGERBREAD.XXLA6
Any feedback or comment on this matter would be really much appreciated. Thanks!
From a personal standpoint. Your screenshots shows that your phone had never ever done a deep sleep at all. the 'Awake' mode is continously consistent as well. I guess the probable reason for that is you've installed ''Avast AV" on your phone. It's always running in the background (whenever the phone is ON). From my experiences, Any background application running would always cause wakelocks and the phone would never enter into deep sleep at all.
How bout you try uninstalling some of the background apps your using esp. Avast AV and give it a day to observe if your still having that battery drain issue. (Don't forget after uninstalling or removing those apps, try to wipe dalvik cache and battery stat and restart your phone after.)
and Oh by the way, I am using Juice Defender and contrary to your saying it doesn't help.. IT DOES HELP save battery as I my Note is able to reach 1.5- 2 days of normal use.
Cheers!
Yeah and download betterbatterystats and do some searching on it. With it you can discover what is causing those wakelocks. Search the web for more info on your wakelocks.
Sent from my GT-N7000 using Tapatalk 2
I'm using avast and never seen a drain like that. Only time I have is because of background processing. First thing I would do is turn off Background Data
Then as others have said - check batterystats to see where wakelocks are
Plus a rooted phone is a good thing. Titanium backup allowed me to freeze wi-fi sharing which also made a big difference
Finally - clear all caches from Applications menu and reboot
letters_to_cleo said:
From a personal standpoint. Your screenshots shows that your phone had never ever done a deep sleep at all. the 'Awake' mode is continously consistent as well.
Cheers!
Click to expand...
Click to collapse
Only picture that shows that is the one with 1 minute 56 sec discharging time, so it was taken shortly after taking charger out. No suprise of it being almost 100% screen on time there if its only 2 minutes
Also installing "cpu spy" will give the cumulative time that your cpu spent at each frequency including deep sleep , mine is showing 88%
John.
Anti virus app is battery hog, I had avast before too, and I uninstalled it after 2 days using. Also that Juice defender, from my test before, it use up more battery than it saved. turning on and off those 3G/Wifi thing is using up alot of battery. and you know what? even the betterbatterystats use up alot, at least to me, becoz it scan what is up frequently.
Hello! Thank you all so much for your response. I've installed both BetterBatteryStats and CPU Spy and here are the results (please see attachments). Upon checking CPU Spy, it shows there that phone did went to deep sleep, maybe? I'm not quite sure, but it shows on the screenshot that it went to deep sleep for 19%. So does that mean the phone really went to sleep?? I'm sorry to ask this question, since I've never really encountered this problem before with my previous Samsung Wave phone, how will you know that your phone went straight to deep sleep mode?
Also, after 46 minutes or so, the battery went down to 96% already after charging it. The battery drain was already 4% in less than an hour.
@letters_to_cleo: I have not uninstalled Avast yet, since I'm still hesitant to use my phone without an AV. But I will try your suggestion for 1 day and see if there's any battery improvement.
I'm looking forward to your response or suggestions. Thanks again!
i am having problem too with new battery original samsung ( made in japan, finished in korea) previously i use samsung battery made in china, finished in korea. charged it over night with power off. it only last 13hrs. my wife phone can last 30hrs.
i've used batterymix to check the battery usage graph, the usage graph drop very fast compare to my wife phone. i'll post some screen capture of the graphs.
another issue is i used once wifi sharing. after turning switching the wifi sharing off, the wifi sharing service always at the background even after many reboot. how to turn that off??
You might need a new battery. Any rechargeable battery has a finite charging cycle. Just a suggestion.
Hi, all! I just noticed that the battery drains still even during deep sleep mode. After 3 hours or so (during sleep mode according to CPU Spy), the battery went down to 92%. It drains even faster when the phone is in use, especially when Wifi and Bluetooth are on, maybe 2-5% drain in 1 hour.
Maybe there's something wrong with the battery?? It's still a new battery and I can see some improvement each day though, but that's because I use it less each day. Before the battery can only last for 8-10 hours, then it increased to 12 hours, and then to 16-17 hours. BetterBatteryStats' current estimate to empty is 24 hours as of today, but that's because I only used the phone today for only a couple of hours, with 20 minutes Wifi and Bluetooth ON and most of the time, it's on deep sleep mode according to CPU Spy.
What do I do with the results from the Partial Wakelocks? Do I have to disable those apps?? The Kernel Wakelocks didn't show any reference apps running. The screenshots for the Partial and Kernel Wakelocks that were taken a few hours earlier still show the same results after 3 hours.
tknguyencsu said:
You might need a new battery. Any rechargeable battery has a finite charging cycle. Just a suggestion.
Click to expand...
Click to collapse
That would be really bad luck. I got my Note via preorder in Germany at the first day it was sold and since then I charged it everyday, sometimes even twice and there is no difference to the first day. If I get told by Samsung after 6month of normal usage the battery is dead that would be the last Samsung device I bought and I use a lot of Samsung stuff.
@ebichan24
Your last screenshots show between 9:35 and 13:35 5% of battery drain. That's not really a good value but ways lower than before. Did you delete some Apps or what did you change?
And since when occurred this issue? Did you install new Apps before this happened?
On my Note I had this issue sometimes without any changes but it was gone after a reboot.
Gesendet von meinem ARCHOS 101G9 mit Tapatalk 2
Agreed with Kanalcommander.... try a reboot in the first instance.
Others have also noted that it takes a few refresh cycles before the phone more accurately reports battery use. Perhaps what you are reporting is because the phone and battery are new (new ROM or Kernel loaded?)
What I have done in the past is to reboot into CWM recovery then clear the battery stats (in the Advanced menu option) Recharge the battery to 100% until it says to remove charger and then use normally until battery down to around 20%, then recharge the battery to 100% again. Do this over a few days and that may help.
thanks, it is new battery two days old.
ahhl said:
thanks, it is new battery two days old.
Click to expand...
Click to collapse
I was having similar problems with my new note and finishing full charge in 12 hrs but fixed some things and my last charge gave me 2d6hr seriously..few things i did were stop using live wallpapers! Get badass battery to thoroughly monitor stats and then use zdbox to extend life even much eg. I put phone to auto flymode using that app when its sleeping time rest i am more than satisfied even if on GB LC1 fw..waiting for official premium suite for ics since i recently upgraded from sgs2 using ics i miss that smoothness and much better bat life.. Let me know if can be helpful.. Good luck
Sent from my GT-N7000 using XDA
@TempusFudgeIt
That's what I'm currently doing right now, well, actually, what I do is I discharge the battery until it reaches 0% and turns the phone off. And then I charge the phone for 3 hours while it's switched off, I turn it back on again to check if the battery is fully charged and then I unplug it from the charger.
@Kanalcommander
**Did you delete some Apps or what did you change?
I haven't deleted any apps yet since I don't know which app/s to delete. Most of the apps I downloaded in Note were the same apps that I used in my iPhone4 and Samsung phone before.
**And since when occurred this issue?
This issue occurred since the first day I bought the phone, which was a couple of weeks ago. How long does it take to condition a new battery and new phone?? I'm sorry if I have to ask this question, it's just because I never really experienced this problem with my previous smartphones.
**Did you install new Apps before this happened? On my Note I had this issue sometimes without any changes but it was gone after a reboot.
I only installed recently CPU Spy and BetterBatteryStats and that's it. The drain of 5% from 9:35 to 13:35, the phone's just on deep sleep mode. And then from 13:35 to 23:44, it went from 92% to 74% while the phone is on deep sleep mode at 90% according to CPU Spy. That's 18% battery drain. It's just an unacceptable number for me. I tried rebooting the phone already, but every time I do so, just a few minutes after I turned the phone ON, there's already a 1% drain in the battery.
Also, does the battery really drain faster when the Wifi is ON? I've read in other threads that there might be some problem with the recent OS update that Samsung needs to address. Is this true?? Because as you can see on the screenshot below, the battery was still at 74% by 23:44 and then after I turned ON the Wifi and used it until 01:26, the battery went down to 54%. That's already a 20% battery drain in just less than 2 hours. I was only browsing through the Android Store and Skype.
Calibrate your battery in case you flashed any roms and for first usage I got my battery to 0% 3 times then everything is running great for example its at 47% now its 22 now and I have had it off charge since 7 morning..... i have wifi gps and 3g always on and use music player bluetooth and made some calls
Sent from my GT-N7000 using XDA
My battery (also only a week old) drains quickly too. Can anyone tell me if widgets draw a lot of current? And then is it only the ones on the visible screen or do all widgets draw juice all the time?
I will ask such thing, did you guys check the battery expiration day ? Mostly sibce you got your phone almost a yeae after it was announced you nay get a bad battery, as for widgets the ones that are always active and asking for informatiom. Like location or weather over the internet yes they do eat your battery kinda fast.
Sent from my GT-N7000 using XDA
Recurring battery drain? - Caused by memory of using app to drain battery?
Hello!
I used a battery drain app when charge left was 30% to accelerate drain to "die out" stage. After I completed the calibration process for unrooted phone as suggested in various sites (charge fully, switch off and charge etc.) I started using it from a 100% stage.
This afternoon when the battery showed 30% I saw in BMW the current flow was in -10ma to -15ma and it started spiking to hundreds. There was no change in settings or usage. From the 30% level it dropped to 10% in an hour and I had to charge again.
Was puzzled why the battery which was dropping around 0.5%/hour in standby earlier to the 30% level suddenly went down hill. My first guess was it was possible some file in the system remembered the previous usage history and replayed it out.
Any suggestions? Anyone faced this before? Everyone says LiOn batteries dont have memory so if anything it has to be the phone.
Thanks!

Usual battery drain

Hi,
So I bought an Anker 1800mah battery about two months ago, thought that would improve battery life.
Thing is, even though I own the I9000 a very long time, I don't know how battery life should be.
So my question is...
For example, if I have data and GPS on and screen on, is it normal that I get 1% drain every 1.5-2 minutes?
Using ICS CM9.
TheeWolf said:
Hi,
So I bought an Anker 1800mah battery about two months ago, thought that would improve battery life.
Thing is, even though I own the I9000 a very long time, I don't know how battery life should be.
So my question is...
For example, if I have data and GPS on and screen on, is it normal that I get 1% drain every 1.5-2 minutes?
Using ICS CM9.
Click to expand...
Click to collapse
did you try your old battery for comparison ?
maybe its the battery and not the phone
btw what rom are you running on?
TheeWolf said:
Hi,
So I bought an Anker 1800mah battery about two months ago, thought that would improve battery life.
Thing is, even though I own the I9000 a very long time, I don't know how battery life should be.
So my question is...
For example, if I have data and GPS on and screen on, is it normal that I get 1% drain every 1.5-2 minutes?
Using ICS CM9.
Click to expand...
Click to collapse
Turn gps off and set brightness to around 20%. You should then lose 1% roughly every 3:30 - 4:00 minutes.
Weird I lose 1% every 10 min sometimes more
Sent from my Awesome I9000 running Slim Bean
Hi all,
First, from what I remember, my old battery acted somewhat the same. Also, I used it for a year and a half, and have totally destroyed it because of all the calibrations. By a calibration I mean draining the battery to 0%, charging to 100%, doing it about 3-4 times... Only later I have learned that it is not healthy to the battery to do that so many times. That's why I only did this 3 times with my new battery (Manufacturer instructions).
Now, thing is, I gave the example with the data and GPS on and screen on because I used GPS for navigations a lot of times. So, I can't turn off GPS. About the brightness, its set to automatic all the time, so I see no reason to modify it myself.
I'm currently using CM9 Blueberry edition but I'm planning to change to JB in a few days. Even though I doubt it, any chance battery life will improve with JB?
Latrop, with the same settings? Having data + GPS + screen on all the time (10 min)? Are you sure?
Mine did not sure bout yours
Sent from my Awesome I9000 running Slim Bean

[Q] Droid 4 and its battery life... or what it thinks is life.

Droid 4 running Eclipse.
I've noticed that after charging my phone to 100% and going throughout the day, battery life is amazing. I get wonderful stats; I can go 12+ hours (and then some) on a single charge.
However, the issue occurs when my phone starts to drop into the near-dead area. When my phone reached 10%, I usually start easing up on data usage, leaving the screen on, and so forth. But the real problem is that I can be using it when it's (supposedly) about to die, and literally WATCH the battery meter drop to 1%. And it will remain at 1% battery for anything from an hour to four, depending on how I use it.
I'm lost as to what I can do. There are no options in Safestrap 3 to sipe battery stats, so I had to resort to a Market app to wipe the 'batterystats.bin' file. Even then, the app that wipes that file shows the battery at over 3000 mAh of juice... yet this device only has a 1785mAh battery.
So I'm confused. I want to make sure that it's reading proper battery levels, and I want to bring it back to where it should be.
Does anyone have any suggestions? I'm not sure what else to try.
Just saw this too! Was worried about battery life, as it dropped from 100% -> 10% in about 8 hours, but then stayed there for many many hours.
I just got the phone, so did calibrating the battery help with your one?

high battery drain when screen on

Using ROCKET ROM reloaded
I've got very good battery life when not using phone - 3g/wifi and draing at less than 2% an hour and will last over 2 days on stand-by. If I do anything that involves having the screen on though then the battery can be flat in not much more than an hour. If i try and examine whats draining battery I can't get past screen time/android as culprits.
I have factory reset and reinstalled ROM twice to check. Phone is 12 months old - Is it likely just in need of a new battery?
pipehippy said:
Using ROCKET ROM reloaded
I've got very good battery life when not using phone - 3g/wifi and draing at less than 2% an hour and will last 4 days on stand-by. If I do anything that involves having the screen on though then the battery can be flat in not much more than an hour. If i try and examine whats draining battery I can't get past screen time/android as culprits.
I have factory reset and reinstalled ROM twice to check. Phone is 12 months old - Is it likely just in need of a new battery?
Click to expand...
Click to collapse
yes try a new battery first as it is old.

note 3 battery life issues

Been having weird battery life issues the last week or so. Like this morning I pulled it off the charged dropped down to 92% within 5 mintues of taking it off the charger. Then last night it said it had 30% battery life left and then suddenly turned off I turned on the case charger and it showed the battery was dead and now charging once I turned it on. Have factory reset and reset the battery life stats and no change. Ordered 2 new batteries to be on the safe side. Have 3 batterys need to try it on all 3. I know for sure it happens on 2 of them gonna try it on number 3 here in a bit.
update
put the 3rd battery in and so far been at 100% longer then the other 2 ever where. So battery issue. Will leave post for others that have similar problems

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