I had a normal phone time on battery before (24h with 2,5h screen time).
And now my battery goes to almost zero in 12h and 1,5h.
I must have installed something which drains the battery. Maybe mail sync or smth.
1. Could you please, who have 24h and 3,5 screen time post your Android system keep awake, cputime and other parameters?
2. Could you provide explanation what is "keep awake" and other similar words used in battery stats screen?
Maybe answers would give me a clue where to search for battery drainer.
Thanks!!!
battery
i would recommend getting cpuspy and seeing if your phone is going in to deep sleep. If it isn't than something is keeping the phone awake. You can dl betterbatterystats and find out what processes are draining your battery along with wakelocks which is waking up your system.
bullka said:
I had a normal phone time on battery before (24h with 2,5h screen time).
And now my battery goes to almost zero in 12h and 1,5h.
I must have installed something which drains the battery. Maybe mail sync or smth.
1. Could you please, who have 24h and 3,5 screen time post your Android system keep awake, cputime and other parameters?
2. Could you provide explanation what is "keep awake" and other similar words used in battery stats screen?
Maybe answers would give me a clue where to search for battery drainer.
Thanks!!!
Click to expand...
Click to collapse
Just keep in mind many folks who get good battery life like that are Rooted running different Kernel and ROM setups.
As mentioned, CPUSpy is a great tool to get a better idea of whether or not your phone is buzzing along at 350 MHz when you're not using it, this is what turns your full day phone, into a half day phone.
Better Battery Stats is also indispensable in my opinion, it can help you diagnose why your phone is staying awake, the majority of the time you can do something about it since user apps tend to be the culprit.
Free on XDA, paid on the Market (and worth every penny).
Related
On my Desire when I went to check what was using my battery the most it showed the Android system is using 91% of it...anyway to decrease it? Or whats causing it to be so high? I've got no apps running in the background or anything other than weather and stuff. I've got everything to be sync manually other than the weather.
Your battery is going to get used no matter what. Most of the time your phone isn't doing anything so it stands to reason that the system sitting idle will use the most battery power. If you played a video on repeat for a couple of hours , that would use up the battery instead...
itani15 said:
On my Desire when I went to check what was using my battery the most it showed the Android system is using 91% of it...anyway to decrease it? Or whats causing it to be so high? I've got no apps running in the background or anything other than weather and stuff. I've got everything to be sync manually other than the weather.
Click to expand...
Click to collapse
perhaps you dont understand, at that particular point out of 100% battery usage 91% goes to the system which sounds right to me as you said all other programs are not running.... another example its just like having a fan , a computer and a microwave... if he pc was off and the fan was running....at the point 100% of electricity usage would go to the fan but if yoy switch on sometging else..then the % changes...
Thanks everyone1
Wrong!
Aitese said:
Your battery is going to get used no matter what. Most of the time your phone isn't doing anything so it stands to reason that the system sitting idle will use the most battery power. If you played a video on repeat for a couple of hours , that would use up the battery instead...
Click to expand...
Click to collapse
No because that is why their is a category for cell standby and phone idle....
If you optimise your phone settings, you will get...
15h 28m 23s since unplugged
cell standby 38%
phone idle 37%
android system 12%
Obviously with heavy usage then you'll find that android system is higher, however generally if you spend less time using it and more time that it is on idle then android system will be less than cell standy and phone idle.
P.S: This is with background syncing on every hour.
Wow - great thread necromancy!
If something is dead and buried for 3 months, best to just leave it there!
Regards,
Dave
foxmeister said:
Wow - great thread necromancy!
If something is dead and buried for 3 months, best to just leave it there!
Regards,
Dave
Click to expand...
Click to collapse
Bit territorial over the forum much?
Not that it is your business but I just got a Android phone and I wanted to clairfy for people who, like me, had to research how to get the best usage out of the battery.
Maybe stick to the topic of the forum posts rather than telling people what to do?
I think so.
Kindest regards,
Stephen.
Stephen2010 said:
No because that is why their is a category for cell standby and phone idle....
If you optimise your phone settings, you will get...
15h 28m 23s since unplugged
cell standby 38%
phone idle 37%
android system 12%
Obviously with heavy usage then you'll find that android system is higher, however generally if you spend less time using it and more time that it is on idle then android system will be less than cell standy and phone idle.
P.S: This is with background syncing on every hour.
Click to expand...
Click to collapse
That's great info Stephen! My optimus 3d is running at 70+% android system after sitting idle for 6 hours ... and then after 30 mins of internet / Google+/Facebook Its about the same... even display is only at 4% and Idle is low too.
Any suggestions of what system tweaks will improve my battery life!? :-/ I just downloaded System panel in the hope it will help too!
Biggest drain in battery is network usage, so just make your apps sync less often, enable the power control widget and toggle network data on/off when you don't need it.
Screen is the biggest consumer hands down. If your radio fits well with your carrier you would get less than a 1%/hour with some apps syncing. And Google maps somehow is the devil itself in 2.3 if Latitude is enabled.
Nice thread revival btw
I have been getting terrible battery life since I mistakenly reset the battery statistics in recovery.
I have recalibrated my battery, but I am only getting like 8 hours.
What can I use to see what is using the battery? I think there is something in spare parts, but I am not sure what to look at there.
Any apps or methods would help me determine what is chewing it up is much appreciated.
Bielinsk said:
I have been getting terrible battery life since I mistakenly reset the battery statistics in recovery.
I have recalibrated my battery, but I am only getting like 8 hours.
What can I use to see what is using the battery? I think there is something in spare parts, but I am not sure what to look at there.
Any apps or methods would help me determine what is chewing it up is much appreciated.
Click to expand...
Click to collapse
It could just be that your phone is incorrectly reporting how much battery life you have since you reset them, and a couple days of usage will just allow it to gather more data and get more accurate.
But if there is an errant app draining your battery, a combination of spare parts and an app called SystemPanel should allow you to narrow it down to what's causing problems.
Plug your phone in for a minute, then unplug it, let the phone sit with the screen off for 25 minutes or so, then go to spare parts->Battery History, then choose other usage and since last unplugged. The running % should be close to the screen on %. If the running % is way higher than screen on, that means something is running while your screen is off.
I paid for the full version of systempanel for the system monitoring feature, but i think you can use the free version to just check which apps are running. Things like google voice should say running, but just about everything else should say background. If you have an app that you downloaded, but haven't been using in a while saying service, there's a good chance that's what's causing your phone to run the batteries out. Garbage apps like Grooveshark (which I still use because I can't live without grooveshark) will run even after you could have sworn you closed out of them.
The paid version of systempanel makes things easier because you can set it to monitor, then come back and look at what apps have been using cpu cycles even when the phone isn't being used. The system processes are always going to use cpu cycles, but apps like Swype will (or did at one point) keep the phone from properly sleeping, and you can tell by all the cpu they're using even when the screen is off.
Ah, that is a good point. 2 apps that I did change were I installed Tiger Text (neat app but rather sure that drains the juice) and I put on a different version of swype.
Thanks for the tips, I will run with that.
More reading I am doing I think the mistake I made, is that I reset my battery statistics when my battery was only half full.
I put in a full battery, reset statistics, and will let it drain, that should calibrate the phone correctly.
Thanks for the tips though, I will keep those in mind.
Yeah, that's another thread about battery drain overnight. With some screenshots.
ROM is AOKP b23, kernel s Trinity (tuna).
Sometimes it's about 20%, sometimes only 10. And rebooting phone (maybe with wiping battery stats) just before the night is helpful - then I get about 4-6% drain in 8 hours sleep time. And the phone isn't awake at that time (as you may see on graph), it's deep sleeping.
As BetterBatteryStats and SystemPanel tell me, it's system processes that use much of the battery at that time - few 'kworker' ones. I've searched the forums for some time, but still can't find a good explanation why they drain so much, nor why rebooting helps.
1) change kernel - yeah, I know, I can try that, but with stock kernel I've had the same problem - so I try to find the root of it, not just slap a few different kernels and see which one works better.
2) reboot every time before sleep - well... that's just isn't very convenient and weak way to deal with the problem.
See attached screenshots for further info.
So, any clues about what I can do to improve the situation?
Link
Link
Other than that, I couldn't find any relevant answers... perhaps a runaway system process... I'd recommend switching kernels, as this issue is known and yet unresolved. Seriously though, battery stats reports it using 56s, so is it really a major problem that is causing battery drain?
anton2009 said:
Link
Link
Other than that, I couldn't find any relevant answers... perhaps a runaway system process... I'd recommend switching kernels, as this issue is known and yet unresolved. Seriously though, battery stats reports it using 56s, so is it really a major problem that is causing battery drain?
Click to expand...
Click to collapse
I'd check that out, thanks! Yeah I know that it's a known problem, but still can't find any good solution for it...
Well it's the process that uses MOST of the system time during that period, so I guess it's enough to cause a drain. And also, there're multiple kworker processes - each may use a bit, but together they get enough for 10% overnight drain.
Which kernel would you recommend to try next? Franco? Seems pretty popular.
Edit: Seen both of these posts, no good solutions anyway. Will try another kernel, then!
I've had great results with Faux123 and I'm just now experimenting with LeanKernel, which is working well so far (wakelocks nonexistent).
I get the kworkers appearing in system panel too, but it doesnt actually effect my battery life. I lose 4% overnight but they show up in system panel.
Also their percentages never add up correctly. For example system panel shows maybe 1.3% cpu usage in total. But when i click thru to the system processes list, the sum of all kworkers exceed 1.3% by a good amount. So i always just ignore them.
Hmm... So maybe they aren't the root of the problem.
Anything else? Maybe battery need to be calibrated, like charging to 100, wiping stats, then discharging to 0 and again charge to 100?
What's really weird is that excessive drain occurs only with extended no-reboot period. Ie, If I reboot just before night drain will be 4-5%...
Check this out. Normally I get about 10% drain overnight, look at what happened last night..
Completely annihilated the battery, everything turned off.
Anyone have an explanation?
Sent from my Galaxy Nexus using Tapatalk
---------- Post added at 04:05 PM ---------- Previous post was at 04:03 PM ----------
The only thing I can think is that something I was doing when I used the phone before bed, kept some sort of process alive all night.
tixed said:
Yeah, that's another thread about battery drain overnight. With some screenshots.
ROM is AOKP b23, kernel s Trinity (tuna).
Sometimes it's about 20%, sometimes only 10. And rebooting phone (maybe with wiping battery stats) just before the night is helpful - then I get about 4-6% drain in 8 hours sleep time. And the phone isn't awake at that time (as you may see on graph), it's deep sleeping.
As BetterBatteryStats and SystemPanel tell me, it's system processes that use much of the battery at that time - few 'kworker' ones. I've searched the forums for some time, but still can't find a good explanation why they drain so much, nor why rebooting helps.
1) change kernel - yeah, I know, I can try that, but with stock kernel I've had the same problem - so I try to find the root of it, not just slap a few different kernels and see which one works better.
2) reboot every time before sleep - well... that's just isn't very convenient and weak way to deal with the problem.
See attached screenshots for further info.
So, any clues about what I can do to improve the situation?
Click to expand...
Click to collapse
Try using the kernel in my signature. this is a proof of what it gave me.
slimldj said:
Try using the kernel in my signature. this is a proof of what it gave me.
Click to expand...
Click to collapse
Great one! Less than 10% drain overnight, 30% per day with moderate-light usage
tixed said:
Great one! Less than 10% drain overnight, 30% per day with moderate-light usage
Click to expand...
Click to collapse
Awesome. Glad it worked.
Sent from my Galaxy Nexus using xda premium
tixed said:
Yeah, that's another thread about battery drain overnight. With some screenshots.
ROM is AOKP b23, kernel s Trinity (tuna).
Sometimes it's about 20%, sometimes only 10. And rebooting phone (maybe with wiping battery stats) just before the night is helpful - then I get about 4-6% drain in 8 hours sleep time. And the phone isn't awake at that time (as you may see on graph), it's deep sleeping.
As BetterBatteryStats and SystemPanel tell me, it's system processes that use much of the battery at that time - few 'kworker' ones. I've searched the forums for some time, but still can't find a good explanation why they drain so much, nor why rebooting helps.
1) change kernel - yeah, I know, I can try that, but with stock kernel I've had the same problem - so I try to find the root of it, not just slap a few different kernels and see which one works better.
2) reboot every time before sleep - well... that's just isn't very convenient and weak way to deal with the problem.
See attached screenshots for further info.
So, any clues about what I can do to improve the situation?
Click to expand...
Click to collapse
Sounds like you may be worrying about battery life too much. If this is worrying alot you may want to get an iphone. The 1750 mah battery is only rated at 10 hours. Lower your expectations about drainage per hour. The phone is constantly pinging cell phone towers to find the best signal possible even in deep sleep. That is the bulk of your drainage.
das7982 said:
Sounds like you may be worrying about battery life too much. If this is worrying alot you may want to get an iphone. The 1750 mah battery is only rated at 10 hours. Lower your expectations about drainage per hour. The phone is constantly pinging cell phone towers to find the best signal possible even in deep sleep. That is the bulk of your drainage.
Click to expand...
Click to collapse
No thanks, iOS is too restricted for me, and I like Google hardware better (I mean revised by Google, not manufactured ofc)
Yeah, I know, but that's 10 hours of USAGE. And I was getting much differentiated results in the same conditions (like <10% one night, >30% other) - that's what was worrying me.
I don't expect it to last whole week or anything, but 30% of power lost in one night when it's just on the shelf doing nothing (not even connected to wifi) - that's absurd. About 5-10% is ok, I guess. That's what I was getting with my Transformer, anyway - less than 1% per hour in sleep mode with wifi off.
Exact same problem. I'm on imoseyon's kernel. If I reboot I lose about5% over night. If not, about 30+. Some app is waking some system process up that is chugging away with the CPU. If I lay it on my bed our some other insulating surface, it is warm. Yes, my phone is entering sleep mode, no app doing wake locks, just kworker going nuts.
I am using samsung galaxy s2 and i am getting the kworker battery bug too. about 15% overnight which sucks.
derycklong said:
I am using samsung galaxy s2 and i am getting the kworker battery bug too. about 15% overnight which sucks.
Click to expand...
Click to collapse
Same happening here, but only after flashing the latest CM radio. I guess it might have something to do with that.
link i know it will help you,and let system go into sleep
hi guys, i visit the links posted but i'm still problems with that. Using watchdog app i notice that al least once a day it show me warning message about high use of cpu. In my case the process is kworker/u8: (here there's a number from 0 to 6)
My question is: what specific process causing that? There's a way to know it? I ask it because i don't think is battery releted, cause battery is very good, excluding for the monitor usage which is what consumes more...
I know that this is a really old topic but seeing that there's still at least one fresh enquiriy i thought i'd chime in...what in effect may indeed help you is wiping the cache (it did help me on several kworker/u occassions in the past). To do so you have to access the respective menu by booting your tablet while pressing the up volume rocker and the power button simultaneously. Hope this helps
Hey XDA,
I've been using AOKP_jb_build1 and r249 of Franco's Nightly Kernel. I've noticed for quite a while that the Mediaserver, CellStandby, and other things of that nature are taking up some battery. What I was wondering is how to reduce this, or if its possible, stop it. I think I would be able to squeeze maybe an hour or two if I resolved some of these battery suckers. Here are my Specs : Galaxy Nexus (VZW LTE), 1850mah., and as I mentioned above, AOKP_jb_build1, and Franco's r249 Nightly. If i said anything wrong/inaccurate please correct me! Thanks!
Best Regards,
~Epic
cell standby, android os/system: use your phone more, if you use your phone more, percentages will be distributed and cell standby/android os usage will drop..
Media server percentage... some app wake lock, rom, widgets that sync you might have
check out betterbattery stats
bk201doesntexist said:
cell standby, android os/system: use your phone more, if you use your phone more, percentages will be distributed and cell standby/android os usage will drop..
Media server percentage... some app wake lock, rom, widgets that sync you might have
check out betterbattery stats
Click to expand...
Click to collapse
Alright thanks man. I already have BetterBatteryStats and I think its one of my widgets causing it. Thanks for the advice.
People still don't know what those percentages actually mean. The percentage being high doesn't always mean something is drawing on your battery. It is usually just a representation of what has used what % of the battery that "has" been used at that point. If cell standby is 50%, but you're at 80% battery, then cell standby is half of what has been using any battery at all.
Sent from my AOSP Android 4.1.1 Galaxy Nexus.
I really am close to killing myself due to sadness and disappointment because of my phone's battery life. lol. I have a Galaxy Note 2(4.1.1 ver) and my battery lasts for 12-16 hours. I use it mostly for Facebook, Google, Viber and YouTube. I have other typical social networking/comm apps (YM,Skype, Instagram,Twitter) but I dont use them often. I have less than 10 games (Temple Run2, Angry Birds, Diamond Dash) but I dont play for more than 15 mins. I have observed that when my phone is NOT in use, it decreases by 7-10% per hour (sometimes 1% per minute on idle) during the day. At night, before I go to sleep, it is a fully charged phone and when I wake up, 25% of the battery's life is gone within 8hrs of not touching it even to check the time. I dont know if its the normal draining rate of the battery, if its a factory defect on the battery or the phone itself, or if it is the app or android system. They say you need to turn off the location or something but I couldn't seem to find it. My phone is just 4 days old, or maybe 5. Im hoping when the phone turns a week old, things will be better. Or should I try to kill myself now? Any possible solutions???
PS. Please try to use "simple" instructions or terms. I really am not good about technology.
I used to have this exact same problem (Everything you said exactly happened to me) Heres what i recommend you to do:
1)First off are you rooted?
2) Get Better battery stats from the playstore or get the XDA Edition (Look it up) This will give you whats draining your battery (Apps)
3)There might me a wake lock thats stopping your phone from sleeping (I used better battery stats to fix this too) I was in school and i left my phone in the car it had 95 % and it drained to 21 % which definitlely sucked alot. Because there was an app that stopped the phone from going to sleep (it basically stayed awake while the screen is off..i hope it makes sense)
Also the battery drain in idle is normal it also happens to me mine drains maybe 2 or 3% in around 5 hours.
Bottom line, get better battery stats. I will be glad to help you out as much as I can. Good luck!
There must be something wrong because if you read around the forum you will find people are reverting back to 4.1.1 because it has the best battery life !
Sent from my GT-N7100 using xda app-developers app
But my battery was reduced by 25% on an 8hr idle time and you have only 2-3% in 5hrs? thats freaking amazing! you need to teach me how its done!!!!
Please don't post multiple times for a problem. Aside from making it confusing for people who may want to help or follow if they have the same problem, it's extra noise. :/
If you mispost in the wrong forum, just pm a moderator to move it. And suicide, really? Just a tad over dramatic.
-----
I would love to help you, but help yourself first: ask a better question
http://www.catb.org/~esr/faqs/smart-questions.html
spycedtx said:
Please don't post multiple times for a problem. Aside from making it confusing for people who may want to help or follow if they have the same problem, it's extra noise. :/
If you mispost in the wrong forum, just pm a moderator to move it. And suicide, really? Just a tad over dramatic.
-----
I would love to help you, but help yourself first: ask a better question
http://www.catb.org/~esr/faqs/smart-questions.html
Click to expand...
Click to collapse
sorry about the posts and the drama. you know how girls are. now what i did is reset my phone and installed betterbattery. hope things will get better.
Elai012488 said:
But my battery was reduced by 25% on an 8hr idle time and you have only 2-3% in 5hrs? thats freaking amazing! you need to teach me how its done!!!!
Click to expand...
Click to collapse
Mine only drop 2% within 6 hours in sleeping mode.
Just fyi, im on pheonix rom V5.0.
Sent from my GT-N7100 using xda premium
Yeah. That's the problem. Its been 3 days in a row that i leave my phone at 100% and I always get a 75% bat when i wake up after 7-8hrs. I have no problem on my battery getting drained WHILE IN USE. But while sleeping? I think that's not normal.
Elai012488 said:
Yeah. That's the problem. Its been 3 days in a row that i leave my phone at 100% and I always get a 75% bat when i wake up after 7-8hrs. I have no problem on my battery getting drained WHILE IN USE. But while sleeping? I think that's not normal.
Click to expand...
Click to collapse
Your idle drain is not normal. Something runs in the background whether it is location services or some app. Like others have said install betterbatterystats and see what drains the battery and prevents it from going to deep sleep.
The other night my phone lost 3% in 9 hours sleep. Around 1% each third hour. 3G on and all.