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So I just checked my phone here at work and it's been off charger for 2 hours and is already down to 80% battery. The biggest battery drainer is "Cell Standby" since the phone has mostly just been sitting there.
does anyone know why cell standby is draining the battery? I though cell standby would just be maintaining a connection, but is it anything more than that?
Running lean kernal/Das BAMF 1.5
If you select Cell standby it says its "Battery used by cell radio". I believe its the amount of time searching for a signal. Are you in a bad 4g area and your phone is constantly switching between 4g and 3g? It is odd for that to be the biggest battery drain but I guess if you have not had your screen on at all than its not too much of a surprise. Remember that under battery stats all of those percentages and information is based on how much battery you have used so far so it may say 30% of it has been used by the cell standby but that only means that 30% of the 20% battery life you have used.
If you click on cell standby you will see the answer to your battery drain. I bet the without a signal percentage will be up and the cause of the drain.
Sent from my ADR6400L using XDA Premium App
Its most likely a radio signal issue, as said. What kernel are you on?
Sent from my squirrel hole
RandomlyWatts said:
Its most likely a radio signal issue, as said. What kernel are you on?
Sent from my squirrel hole
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Kernel has nothing to do with the radio so that doesnt really matter.
Busphan said:
If you click on cell standby you will see the answer to your battery drain. I bet the without a signal percentage will be up and the cause of the drain.
Sent from my ADR6400L using XDA Premium App
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Mine is always number 2, right behind display. However, my time without signal is always 0%. I live in a good 4G area, but do work in an area where I bounce around a lot. In it's infancy I expect LTE to give people fits with this. I don't think it's that out of the ordinary.
I just got the View for my wife to replace her Kindle Fire and it has terrible battery life running HC. I have it in airplane mode and I have tried a number of battery life tips that have worked on all my other Android devices and nothing is working. For instance its been on battery for just under 5 hours and just barely over 1 hour display on and its at 35% right now. I used to have the Flyer and it was pretty decent when it came to battery life but the View is terrible. Am I missing something?
The flyer was wifi only. The view is running a mobile data plan. If you want it to get battery life like the flyer then turn the mobile data off and only use the wifi.
This is what I do with my view and I am usually trying to kill it at the end of the day to charge it. I'm on it constantly throughout the day as well.
My battery life seems fine. I use it off and on throughout the day and I have the Cellular radios on most of the time.
NinjaMom said:
The flyer was wifi only. The view is running a mobile data plan. If you want it to get battery life like the flyer then turn the mobile data off and only use the wifi.
This is what I do with my view and I am usually trying to kill it at the end of the day to charge it. I'm on it constantly throughout the day as well.
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As I stated it is in Airplane Mode therefore mobile data is off.
butterflygirl said:
My battery life seems fine. I use it off an throughout the day and I have the Cellular radios on most of the time.
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I'm beginning to think I might've received a bad View.
Its not normal and hardware is unlikely so check the battery usage stats on the settings menu and see what is using the battery.
DigitalMD said:
Its not normal and hardware is unlikely so check the battery usage stats on the settings menu and see what is using the battery.
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I have been monitoring the battery stats very closely and it doesn't make sense what is causing so much drain. I even have Better Battery Stats installed to monitor partial wake usage and nothing is out of the ordinary. I've never received a device with a bad battery but I'm thinking this might be the first.
jhale83 said:
I have been monitoring the battery stats very closely and it doesn't make sense what is causing so much drain. I even have Better Battery Stats installed to monitor partial wake usage and nothing is out of the ordinary. I've never received a device with a bad battery but I'm thinking this might be the first.
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i think you did that does not sound normal mine last all day with heavy use i can say i have never had it go all the way down...you may have a bad battery it just doesn't sound like the two i play with in fact one on gb the other on hc and the hc is lasting more....
Aside from a possible bad battery, you might have a corrupted battery stats file. Try clearing the file by deleting it if you have root.
Wait a few days. I think the same thing happened to me. Maybe for the first few days the battery indicator is not very accurate.
nubyw00tz said:
Wait a few days. I think the same thing happened to me. Maybe for the first few days the battery indicator is not very accurate.
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We've had it since 1/31 and it hasn't gotten any better. I've been doing some more testing and it seems as though wifi is the culprit. In airplane mode without wifi on it seems fine without use and doesn't drain. With wifi on the battery usage shows a constant drain without any use.
Try out my rom. All my testers and users report much better battery life than the stock rom, and I've got a couple extra things under the hood.
the links in my sig...
I just picked up a view off of CL. Same problem.. Horrible battery, didn't even last a full day.
People make fun of the ipad, but that 10 hour battery is no joke. This thing, with cell radio off and wifi on, lasts me MAYBE 5 hours, and thats with medium usage.
That's insane.
DatacomGuy said:
I just picked up a view off of CL. Same problem.. Horrible battery, didn't even last a full day.
People make fun of the ipad, but that 10 hour battery is no joke. This thing, with cell radio off and wifi on, lasts me MAYBE 5 hours, and thats with medium usage.
That's insane.
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Now don't just assume all Android tablets are like your experience with the View. I'm confident there is something defective with the one I purchased. I had the Flyer and it would last me a good 7 hours and I currently have the Galaxy Tab which easily gets me over 9 hours of actual use (ie screen on).
jhale83 said:
As I stated it is in Airplane Mode therefore mobile data is off.
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Missed that part. My bad.
spartan1987 said:
Try out my rom. All my testers and users report much better battery life than the stock rom, and I've got a couple extra things under the hood.
the links in my sig...
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Click to collapse
I installed this rom and have to say battery life is improved. Although Ill honestly say that battery life on my view was never a problem. About a day on medium use. 7+ hrs
Has anyone else noticed that since we can see battery stats now with the .21 update wifi is eating most of the battery even more than the display.
NuKeM4n said:
Has anyone else noticed that since we can see battery stats now with the .21 update wifi is eating most of the battery even more that the display. Any potential fix for this?
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Yea, battery is draining quicker compared to last Firmware. You can turn off WIFI during idle stage.. however, yea.. it's annoying.
yeah, i noticed this too. i even have wifi to shut off when sleeping and its still consuming 55% of the battery.
Maybe they boosted up the wifi signal strength a lot to compensate for the infamous poor wifi signal with battery drainage as a consequence.
Aweloi said:
Maybe they boosted up the wifi signal strength a lot to compensate for the infamous poor wifi signal with battery drainage as a consequence.
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That is what I posted in the other thread. Only thing I can think of that makes sense.
Same here. My wifi has used 79% of my battery since last charge.
slybarman said:
That is what I posted in the other thread. Only thing I can think of that makes sense.
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Can you point us to that other thread so we're not fragmented all over the boards?
Bruuce said:
Same here. My wifi has used 79% of my battery since last charge.
Can you point us to that other thread so we're not fragmented all over the boards?
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The other thread was about the update generally:
http://forum.xda-developers.com/showthread.php?p=24228334#post24228334
Are you guys sure the stats are 100% accurate? I dont think that wifi actually sucks more juice than the display. Its the same on my Prime but its possible that the stats just arent that accurate. I have wifi set to disable when in sleep mode so i really dont think it makes sense that it takes up more than the display even in that setting.
Could be wrong though^^ My batterylife so far isnt really different than before the update - at least it doesnt feel different.
my battery life is still the same, which is great. wifi being a battery drainer is nothing new. top 2 battery drainers isbthe display(how high you have it) and wifi. I have my wifi on 24/7. never cut it off and I still get great battery life. I tried that cutting wifi off during sleep setting but I hate it. it always takes the wifi connection a little will to come back connected once display OS activated again. so I just leave it on. another thing to check also is to cut your background sync times down. you don't need email be checked and sync every 5 mins. cut sync off on anything you know you don't use much. saw goes for app notifications also. I got tired of my Facebook going off all the time, so I cut it off. it'll just update when I open the app up. or doing a manual refresh.
WiFi drain seems to be a lot higher since the update.
I got slightly over 5 hours of surfing and messing around undocked last night. WiFi used over 65% of the CPU.
Sure I was getting closer to 8 hours before.
Running in balanced mode
clouds5 said:
Are you guys sure the stats are 100% accurate? I dont think that wifi actually sucks more juice than the display. Its the same on my Prime but its possible that the stats just arent that accurate. I have wifi set to disable when in sleep mode so i really dont think it makes sense that it takes up more than the display even in that setting.
Could be wrong though^^ My batterylife so far isnt really different than before the update - at least it doesnt feel different.
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I have noticed a huge difference. Last week my prime would only lose 2% battery over night. I updated and haven't changed any settings. Now it drops roughly 40% over night... I'm not happy to say the least. I'll try turning wifi off tonight and compare the 2 settings.
(By the way, I'm rooted and stock everything else)
Glad I am not the only one. I just got my TP a week ago and updated to .21 and sure notice that battery life has been awful. Using it for web browsing, loses 10% in about 40 minutes. And turned off seems to drain the battery as well, more than before the update.
Sent from my Transformer Prime TF201 using xda premium
I do not have drain over night.
I charged it full, and after 9 hours in stand by, battery was 99%
BUT the BlueTooth draines the battery when the Prime is in use.
The settings suggest to turn it off, if you do not need it.
21WW seems fine for me about the battery usage otherwise.
Do not expect the usage they were talking about in the specs.. it's not true!
Aweloi said:
Maybe they boosted up the wifi signal strength a lot to compensate for the infamous poor wifi signal with battery drainage as a consequence.
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Click to collapse
WiFi analyzer shows no difference in signal strenght, and my Prime has been RMAed at ASUS and had changed parts (WIFI/BT issue), it did not help either.
Hey everyone,
I tried searching on here but couldn't find anything similar. I thought I'd post here as its battery related.
For a start, my Prime is completely stock with the .21 firmware. Earlier today I noticed my Prime battery monitor hadn't gone lower than 93% for AGES! When I went into Settings - Battery, it said 93% Unknown. I obviously guessed it was a lot lower than that as I had used it a fair bit most of the day. I was using it about 2 hours ago and it suddenly switched off. I guessed it had run flat so I put it on charge. I've just tried to switch it on and nothing!!! It's been charging for a good 2 hours or so.
Any ideas??? I've had it less than 2 weeks!!! :-(
Thanks in advance.
Sent from my HTC Sensation XE with Beats Audio using XDA
cold boot. hold down the power button and the volume down button until you see the text on the screen, then choose boot without wiping your data.
r0ck0 said:
cold boot. hold down the power button and the volume down button until you see the text on the screen, then choose boot without wiping your data.
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Click to collapse
Since last update I get more than 20% / hour of battery drain doing web browsing at 50% screen brightness ... it was way better from what I remember when I was on .11 and .15 ...
Tried cold booting, will see if that makes a difference ...
r0ck0 said:
cold boot. hold down the power button and the volume down button until you see the text on the screen, then choose boot without wiping your data.
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Well after charging all night it did switch on as normal again. But today the battery has stopped at 93% again. Going into Settings - Battery, its says 93% Unknown again. :-(
Sent from my Transformer Prime TF201 using XDA
curtis818 said:
Well after charging all night it did switch on as normal again. But today the battery has stopped at 93% again. Going into Settings - Battery, its says 93% Unknown again. :-(
Sent from my Transformer Prime TF201 using XDA
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Click to collapse
Sounds like your batterystats.bin file is corrupt. If you are rooted then navigate to /data/system/ and delete batterystats.bin
Reboot and Android will create a new version of this file and hopefully it will display stats correctly.
Doktaphex said:
Sounds like your batterystats.bin file is corrupt. If you are rooted then navigate to /data/system/ and delete batterystats.bin
Reboot and Android will create a new version of this file and hopefully it will display stats correctly.
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Click to collapse
What if I'm not rooted mate?
Sent from my Transformer Prime TF201 using XDA
I am running .21 in power save mode. I have noticed the following. Using OS Monitor I found that "System" process was using 65%+ CPU resource all the time. So I turned off/stopped as many things that I could no effect..accept..un-mounting my SD card.
Once I un-mounted my SD card the "system" process time dropped to less than 10%.
Since then my battery has only dropped 7 points in 14 hours..based on my "Battery indicator" app.
So why would my SD card eat up battery life by consuming CPU time???
I noticed my S3 drains about 10% battery overnight. I dont think this is normal. Wifi and 3g are off, it just lies there by my bed doing nothing. Ive restarted it and no help.
Cell standby shows 41% usage. Is that right?
The 2 red circles in the screenshot show when my phone is idle just lying there.
Any help?
We need more information. What apps run? have you remove/freeze bloatware. Are you rooted? what rom are you on?
I'm going to run this based on speculation perhaps side effects of rooting your phone? I know there is no conclusive evidence of this but a hypothesis as such. My apologies if you aren't rooted.
Itadakiimasu said:
I'm going to run this based on speculation perhaps side effects of rooting your phone? I know there is no conclusive evidence of this but a hypothesis as such. My apologies if you aren't rooted.
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why would rooting your phone create battery drain?
OP the standard answer is to install better battery stats and check it again to see what those wakelocks are. Once you find out why your phone is waking up you can do something about it.
vikeor said:
I noticed my S3 drains about 10% battery overnight. I dont think this is normal. Wifi and 3g are off, it just lies there by my bed doing nothing. Ive restarted it and no help.
Cell standby shows 41% usage. Is that right?
The 2 red circles in the screenshot show when my phone is idle just lying there.
Any help?
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Click to collapse
I'm also getting a 10% battery drain over night. I've been putting the phone in airplane mode to see if that helps at all but it really doesn't. Anyway we can inprove this? 10% seems like a lot for sleeping...
Death&co said:
I'm also getting a 10% battery drain over night. I've been putting the phone in airplane mode to see if that helps at all but it really doesn't. Anyway we can inprove this? 10% seems like a lot for sleeping...
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install better battery stats and find what causes wakelocks......as above post!
Sent from my GT-I9300 using xda premium
thanks for the replies everyone, Im using the latest stock firmware... no rooting here...
Installing better battery stats as we speak and see what they say...
GSam Battery Monitor and / or BetterBatteryStats would be the first place as mentioned already.
I was able to find what was causing me most issues. It was some Calender storage and Google syncs (bookmarks, contacts etc) even though I didn't have them activated.
Anyway, after freezing them I now only lose 2-3% overnight. That is with gmail push, email sync every 4 hours and about 7 or 8 other Widgets updating every few hours. Mostly noticed a massive improvement when I flashed the latest siyah kernal.
Sent from my GT-I9300 using xda premium
skimminstones said:
why would rooting your phone create battery drain?
OP the standard answer is to install better battery stats and check it again to see what those wakelocks are. Once you find out why your phone is waking up you can do something about it.
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Click to collapse
I don't know but I get the feeling that rooting various phones might have hidden side effects as such, rooting your phone is still evolving as of today. There are still alot that the general doesn't know hence there are always new things about rooting although I might not be knowledgeable in that department. However is it possible to unroot your phone? rather revert it to stock? try doing that and see if there are any differences.
In 2 hours, I have lost 29% battery life. I'm pretty sure this can't be normal, especially with 1+hours of Deep Sleep.
http://www.mediafire.com/view/?2panq9fohk2atfe here is the "Better Battery Stats" for those 2 hours.
Thanks for any info
If it matters, I'm running CarbonRom.
pivotraze said:
In 2 hours, I have lost 29% battery life. I'm pretty sure this can't be normal, especially with 1+hours of Deep Sleep.
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If you were to post this over at the BBS thread, they would tell you a few things right off the bat:
1. the facebook app is a battery killer. I'd start by freezing it (if you need facebook functionality there are more battery friendly apps for it)
2. Looks like you are doing a lot of syncing. turn it all off.
3. Enable root features in bbs since you're rooted (lets you get more info that may become relevant).
4. You need more idle time. plug in and unplug your phone to create an unplugged reference, then leave it be for a few hours.
The AudioOut_2 wakelock is an interesting one, especially since it's high on your list. In my case it showed up when I tried poweramp and it seemed to be related to the auto-start-when-headphones-plugged-in option, so if you use poweramp check that option. Others seem to get it from viber. If you have that, remove or freeze it.
So, give the above a try, and check a new dump. This will probably give you more stuff to look into. If you find a problematic app you can then determine whether it can be fixed by changing its settings, greenified, disabling its autostarts, or if you just need to avoid it.
pivotraze said:
In 2 hours, I have lost 29% battery life. I'm pretty sure this can't be normal, especially with 1+hours of Deep Sleep.
http://www.mediafire.com/view/?2panq9fohk2atfe here is the "Better Battery Stats" for those 2 hours.
Thanks for any info
If it matters, I'm running CarbonRom.
Click to expand...
Click to collapse
From what I see you have had no, or only one bar of signal? If so, you may want to use Airplane Mode. You can use Airplane mode and still use Wi-Fi.
Have you been around Wi-Fi? If you aren't around Wi-Fi, turn it off.
NFC. Is it on? Do you use it? If not.. Turn off.
If your battery level shows inconsistency, you might want to calibrate your battery.
I hope i helped, im not quite sure why you loose 11% every hour, while mostly in deep sleep. Go to performance control and use some tweaks for your kernel.
Tyler44346 said:
From what I see you have had no, or only one bar of signal? If so, you may want to use Airplane Mode. You can use Airplane mode and still use Wi-Fi.
Have you been around Wi-Fi? If you aren't around Wi-Fi, turn it off.
NFC. Is it on? Do you use it? If not.. Turn off.
If your battery level shows inconsistency, you might want to calibrate your battery.
I hope i helped, im not quite sure why you loose 11% every hour, while mostly in deep sleep. Go to performance control and use some tweaks for your kernel.
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Click to collapse
The low signal shouldn't have any affect on the battery of the G, when I was on aosp I used houcha's kernel an I got great battery life around 23 hours with 5 hours of screen on and was at 22%, with set CPU profiles engaged and no kernel tweaks from any app. And I live in an area that primarily has 0-2 bars of service at home and full lte when I work I leave everything on, all radios and data sync. Now that being said for some reason the development is moving towards synergies kernel, and it doesn't have nearly the battery life that houcha's gets
CPU profiles included: https://www.box.com/s/toj5p6qclr1adf69ttfl
Sent from my LG-E970 using XDA Premium HD app
The AudioOut_2 wakelock can be caused by corrupted Mp3 files on your SD card. It was wreaking havoc in our SGS4G community and the fix for us was always to use MP3val to scan and fix those files. It cleared the AudioOut_2 wakelock right up. I know these are totally different phones but hey its worth a shot. http://mp3val.sourceforge.net
Sent from my Nexus 7 using xda app-developers app
dvdbabcock said:
The low signal shouldn't have any affect on the battery of the G, when I was on aosp I used houcha's kernel an I got great battery life around 23 hours with 5 hours of screen on and was at 22%, with set CPU profiles engaged and no kernel tweaks from any app. And I live in an area that primarily has 0-2 bars of service at home and full lte when I work I leave everything on, all radios and data sync. Now that being said for some reason the development is moving towards synergies kernel, and it doesn't have nearly the battery life that houcha's gets
CPU profiles included: https://www.box.com/s/toj5p6qclr1adf69ttfl
Sent from my LG-E970 using XDA Premium HD app
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Low signal does in fact drain your battery. When you have zero to one or two bars, your phone is searching for signal, It causes the phone to increase power to the antenna, to get signal.
Tyler44346 said:
Low signal does in fact drain your battery. When you have zero to one or two bars, your phone is searching for signal, It causes the phone to increase power to the antenna, to get signal.
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I understand the premise that low signal causes mor power to be drained, my point was that it doesn't cause 29% on this phone that's not even close to possible
Sent from my LG-E970 using XDA Premium HD app
dvdbabcock said:
I understand the premise that low signal causes mor power to be drained, my point was that it doesn't cause 29% on this phone that's not even close to possible
Sent from my LG-E970 using XDA Premium HD app
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Sorry, I didn't say thats why your loosing 29%, i was just giving you tips on how to save battery life.
Sent from my Optimus G using xda app-developers app
Also if u are rooted u can download greenify from apps store helps with battery drain by putting apps in hibernation that normally wont go there like facebook and maps..... Etc
Via LG OG running Rootbox 4.2.2