yashsingh1/xdaforums huggingface dataset:
[BetterBatteryStats] cheezzzz:
thanks, guess I was just paranoid about the awake time, been seeing it too often. I still lost about 8-10% of battery across my 8 hours of sleep though x.x is that alright/normal?
[BetterBatteryStats] jeremysherriff:
I'd suggest that if you're losing that much, with such low awake times, that you need to look further into the poor reception possibility. BBS has only recently started logging reception strength stats, but you'll find the numbers under your phone settings\about phone\status. You may need to drop back to 2g in some areas so that your phone doesn't chew up power trying to find stronger cell connections.

My home has good reception, with "-69dB" showing, but my work has poor reception with "-85dB". In the Android battery graph, the "mobile network signal" goes olive/dull often at my work. When I remember, I change to 2g while I'm in such areas, and the battery stops draining. When I remember ;)

The more negative the number, the more likely your phone is going to be dropping data connections and having higher awake times for each alarm or data connection attempt.
[BetterBatteryStats] itsLYNDZ:
Would using APN and airplane mode help with this? I find my phone is still searching for signal with airplane mode on. Otherwise, my battery its drained a percent every couple of minutes
[BetterBatteryStats] Vario_User:
Ok , after full charging and unplugging I have a value now :)

Gesendet von meinem GT-I9100 mit Tapatalk 2
[BetterBatteryStats] virgopunk:
Hi, I recently started using bbs due to some rather odd battery drainage following a move to imilka's CM9 rom. The problem from what I can see its to do with the com.android.internal.telephony.gprs-data-stall alternative which is triggering endlessly. I understand that this could be a3g reception issue but that's puzzling since my signal is good where I am.

Is there any way of preventing this from occurring? I've lost 12% in an hour since unplugging!

Its it worth me posting my dump file for a closer look? If so what's the best way of praying the file?

Many thanks for any help or advice you can give me.
[BetterBatteryStats] Karpfenhai:
@Chamonix, i can now cornfirm the bug with the not updating timers in the widget:
[BetterBatteryStats] gaui:
I have 540 of those now on 30 minutes screen on.

This is making my battery efficiency suck on whatever ROM I try. Sammy/AOSP/AOKP, whatever.

This seems to be a bug in Android ICS base and is deriving to all projects.

I still havent found anything to reduce it.
[BetterBatteryStats] dampy78:
If they weren't mysterious we would all have iphones!
[BetterBatteryStats] desean:
fyi, i use hancent and it has never caused me any issues even until today. never appeared on my battery usage or BBS list ever. i can only say the battery usage is so low until it doesn't qualify to "appear" on the list.

if it helps you, this is my notification settings: no pop-ups (i.e. notification bar only), short sms tone, vibrate always, no screen on, LED on (with BLN on my SGS2). also i don't use handcent services.
[BetterBatteryStats] nobnut:
Search isn't working for me at the moment, so I can't find the references to Alarm Manager that I was going to post.

What I have found and it appears to work very well for me at least is that alarms and more importantly, calendar reminders appear to drive up the partial wakelock number significantly. If you want to reduce these locks to a very low and acceptable level (~1min of partial wake per 4 hours of sleep), don't use either.

Obviously, if you want or need alarms and/or calendar reminders, then this is not a solution for you.

- - - - - - - - - - - - - - - -

I am not addressing this next bit at you DrunkFux666, or anyone else in particular, but yesterday I was basically asked to justify or defend my own views on battery savers/profile managers... I am not interested in entering into a debate about who uses what on their devices and how well it works for them, it is of no interest to me at all. If something works for a user... great, if it doesn't work, then do like I do and find a solution.

I don't want to be partly responsible for turning this thread into a whole mess of X vs Y. I am just trying to give people who ask, the option to choose for themselves what works best for them. If someone wants my opinion, I will provide it. What I am not going to do is to hang around and justify it for hours afterwards. If someone disagrees with me, that is fine, I honestly don't care. They can help the guy who asked in the first place.

From now on, if someone asks me something and I answer and then someone else comes along with a different perspective, as far as I am concerned, that is good, the original member now has two options. If I am challenged however on my opinion, I am not going to respond, I am just going to link to this post.

I get three days life out of my battery (SGSII), which suits me just fine. This is up from 16 hours with a stock setup. Each with a similar usage level. I've never claimed to be an expert because I am not. If I find a problem, or if something is causing me a headache with my device, I just go here and find a solution, which can sometimes take days.
[BetterBatteryStats] DrunkFuX666:
Woahh hey Nobnut I dont know what happened or who these ppl are that are starting **** but I assure you everyone of us who you've helped or are trying to really appreciates it ... I know I am... and iv seen the dozens of other thank you posts to you and chamonix...

Don't be offended by the anal retentive ones... we all know they just love the drama... but we really appreciate all the help and suggestions... tho my problems not solved... yet... iv gotten alot farther along trying to fix it with you guys help than I would have on my own... that's for sure...!! :D

So no need to have to sit and 'defend' yourself to anyone... if someone wants to listen, good for them... if not... eff off and don't ask for help to begin with... just take it easy yo...!! :)

Sent from my Motorola Atrix
[BetterBatteryStats] nobnut:
It's cool. I wasn't ranting. Maybe my tone came across too strongly. I am very grateful for the thanks I have received from all you guys.

I'm just not interested in discussing individual apps and user experiences in this thread.

Have a good one! ;)
[BetterBatteryStats] CekMTL:
For what is worth you know you have my total respect ;)

Enviado desde mi GT-I9100 usando Tapatalk
[BetterBatteryStats] manuelkuhs:
Source of my Sensation Battery Drain

So, I think I found some answers.

First, this thread reports current measurement apps not working on HTC Sensation:

http://xdaforums.com/archive/index.php/t-1156196.html

Second, the Techradar review of the Sensation says the following:

http://www.techradar.com/reviews/phones/mobile-phones/htc-sensation-943466/review?artc_pg=9

Well, I'll definitely go get my phone replaced tomorrow.

P.S.: Left phone on all night including 1/2G, 3G/WiFi off, started & stayed at 89% for the whole 8 hours. Once it went back into my pocket the battery began to plummet again even though I didn't use the phone. I read someone else reporting that phone in pocket (i.e. moving a lot) drains the Sensation battery like crazy. At work, put it into the drawer and the battery drained a lot less.

P.S.2: Nobnut: I appreciate all your help and opinion. Even if I didn't agree (though I actually do), I'd still appreciate it.
[BetterBatteryStats] carlos67:
REVELATION perhaps?

@Nobnut - you have my total respect too man. Your a nice guy and a big asset to our community. Now, back on topic and I have some EXTREMELY INTERESTING OBSERVATIONS that may just be verging on revelation!!!

In a word TEMPERATURE! (I can hear the giggles and snide remarks even from here :eek:)

I have noticed over the past month (that's how long I've had the sgs2) that the rate of drain of the battery seems to depend on the temperature of the battery. I have looked carefully, many times at the mA drain rate and it seems to increase with battery temp and decrease when battery temp comes down.

Now, conventional wisdom says that batteries are more efficient the cooler they are right? This seems to be born out in practice with this phone.

I have posted recently in this thread about how confused I am that sometimes I can achieve 1~3 mA drain and yet other times it's more like 20~40mA drain for exactly the same running conditions - APART FROM BATTERY TEMP.

The times my battery drains less, the ambient temp (and hence the battery temp) wer lower like say 20~22 degrees. The times when it would stubbornly remain at high drain I have noticed the temp to be higher say 27~40 degrees. This always seems to be true.

Now, maybe, just maybe, the people experiencing low battery drain are those living in cooler climates and higher drain in much warmer climates.

Just look at a previous post today where the guy posted a screenshot showing his battery drain(about 3-4 posts back). Notice how his drain is very low i.e. 0% BUT, check his battery temp i.e. 22Deg's.

The more I think about this the more it makes sense, not just on observational grounds, but scientific fact about how battery efficiency varies depending on temperature.

I have posted my own stats from last night which show exactly the same trend. i.e. phone was asleep the whole time and as the battery temp reduced, the mA drain also reduced eventually to only 4mA (incidentally at 22 Deg's). Notice how the temp drops also the drain drops over a period of 6 hours phone sleep.

Whilst this may not explain "everything battery related" I think it is definitely very significant and overlooked at present by many.

The good thing about all this is that it's easily tested by others by running the phone cool and then warmer under exactly the same app/running conditions (must be while screen is off though). Sorry for the absurdly long post :o
[BetterBatteryStats] DrunkFuX666:
Just a thought Carlos... do you think the battery temp can also largely be related to phone usage...?? I mean if you think about it when does the battery temp go up... when u use it... when does the drain increase... when u use it... or according to what you said when it gets hotter...??

And ofcourse vice versa... no use... no drain... low temp...

I'm just thinking... tho I'm sure you done your research so are prob right :)

Sent from my Motorola Atrix
[BetterBatteryStats] nobnut:
Good luck. Don't take 'no' for an answer!
[BetterBatteryStats] ithehappy:
Great observation IMO. As per your Battery Monitor graph battery drained just 2% over a period of 7 hours. The battery temp hovered around 22°C all time. That's nice.

But as you said battery drain could be higher in Hot temp areas, I can say I also have same drain, like- 3-4% in about 9-10 hours, and my battery temp is around 29-30°C, now that's odd here atm, but it is for last 72+ hours constant rain, on other times, in summer, I had same drain, when temp was around 35°C, so I don't think temp is an issue here.

Regards.
[BetterBatteryStats] almorsol:
I will try this app to see how it works with my awake phone apps.

Thanks man!
[BetterBatteryStats] chamonix:
My last hint on Handcent was not on notifications but about the repeating reminders, whether popups or notification. Obviously hancent sets alarms (search for dumpsys in this thread for querying them) for doing something on a regular basis. That could be check for updates, cloud kindof backup or reminders.

Have you checked those options?
[BetterBatteryStats] chamonix:
I'd be interested seeing htc's hardware and/or software fixes on anything related to sensors and touchscreen between those models :)
[BetterBatteryStats] chamonix:
I'd add one variable: is the current calculated or measured? If calculated, would it by chance involve capacity, temp, tension?
[BetterBatteryStats] carlos67:
Well, first of all, it's a complex issue and beyond the scope of this forum. Unlike Nobnut, I did study Thermodynamics for 4 years as part of my Mech Engineering degree, and believe me you could write a thesis on this very subject.

I strongly believe that battery/ambient temperature is the biggest culprit for high

sleep

drain. Obviously when the phone is in use, it works the processor which gets hot and thus transfers radiant, convective and probably conductive heat to the battery. Battery heats up and drain goes up. Battery maybe also generates its own heat (like Nobnut suggested) because of increased discharge rate when powering the CPU. So, the heating of the battery (when in use) is 2 fold. Recieving heat from the processor and also it's own discharging action. A double whammy you might say!

However, in sleep mode (which is where most peoples concerns about battery life are), the temperature of the battery to a large extent is governed by the ambient room/pocket/handbag (;))temp. So, phone asleep in your pocket will drain more than phone asleep just lying on a table because, on the table is cooler, maybe 6~10 Degrees cooler.

However, like Nobnut said in his excellent reply, it is largely meaningless in real life practice for the reasons he gave. It does however help us to understand why we have different drain rates at differing times i think.

Try it yourself. Tonight, put your phone near a draughty window or somewhere chilly and see what drain you get overnight. Then tommorow night, same test but in a warmer place like near a radiator. I bet you will see different drain rates in the morning. If anybody decides to test this, to give the test some integrity, make sure you reboot your phone both nights (just before putting it to sleep) to make the test as comparable as possible

Finally, like the man says - NEVER, EVER CONFORM ;)
[BetterBatteryStats] chamonix:
I noticed I forgot to reply to the Wiki offer earlier this week. Sorry for that, I hardly used my laptop except for coding and the xda app is good at not keeping track of the last read posts.

I'd say it's a good idea and I'd like to use it for documenting stuff from here plus other sources under a few conditions: we need a namespace and the possibility to name the pages in a way that they carry the name of the service or process. I need that as I want to display symbols in bbs where knowledge is available so I need a way to query the index of the namespace and generate links from the wakelocks key.

It must be possible (I don't know the terms of the wiki) to link that knowledge from a commercial app and of course be available to non xda members. If both apply it's perfect if not we can still discuss the concept but I'd need another one for the inline knowledge
[BetterBatteryStats] carlos67:
Good question. In BMW I have only 2 options for mA retrieval method - Automatic and Estimated. Mine is set to Automatic. Sounds more accurate than estimated to me.
[BetterBatteryStats] nobnut:
Please, no one put their phone in the refridgerator to test battery temperature ;)

...condensation = water

Sent from my Motorola StarTac using Voodoo
[BetterBatteryStats] bringonblink:
Thanks for the explanation. In 8 hours I have 2000 exchange wake ups, a lot higher than anything else.

However in the wake lock section it only uses 2 mins which is pretty good.

So my question is do ' wake ups drain battery and be something to look out for?
[BetterBatteryStats] jeremysherriff:
Ummm... it depends! Check the partial wakelocks section, if the bits that refer to "AlarmManager" have high counts or times then yes, otherwise I think No.

Normally we work the other way round - if the partial wakelocks section has lots of AlarmManager bits, then we go looking into the Alarms section to see what was happening.

Generally, if there is battery drain that isn't explained by Kernel or Partial wakelocks, then Alarms is then next thing to look at.

Sorry, don't know if that helped. Post a dump file up if you want!
[BetterBatteryStats] virgopunk:
This its what I feared. Obviously with airplane mode on the problem disappears. Let's hope you there'a a solution soon.
[BetterBatteryStats] jeremysherriff:
I don't know what APN is, is it an app?

Anyway, generally airplane mode won't help, it ends up having a similar effect to JuiceDefender - it cuts radio comms, and then causes any sync or network activity to fail. Depending on coding, they may fail badly, by retrying endlessly or holding open tcp sockets forever, stopping the phone going back into deep sleep.

One option that might work, if you find that wifi doesn't cause drain on its own, then you can enable airplane mode then enable wifi afterwards - that will allow data via wifi, and should stop the radio components from searching for cell networks. Something to try anyway, and probably (maybe?) something that tasker can automate for you if it works. I don't know/use tasker so thats a guess.
[BetterBatteryStats] bringonblink:
Ok i forgot to save the dump file after my 8 hours of screen off, so theres gonna be a bit of screen on time :/ I'll try and get another one tonight of just 4 hours, but here is the one so you can see about the exchange email.

Thanks

http://db.tt/VenmuciE
[BetterBatteryStats] Karpfenhai:
Do we talk about this?

I got this after 26 hours, could you try disabling fast dormancy, even if your carrier supports it, just for a test?

Swyped from my GT-I9100 using XDA App.
[BetterBatteryStats] jeremysherriff:
Assume you are talking about this:

Alarms (requires root)
======================
com.android.email (): Wakeups: 2482

What sort of account do you use? Exchange with ActiveSync? I think it's malfunctioning, I would delete the account, then clear data for the email app, and set it up again. That's not right!

PS you probably want to update to IMM76I if possible, the issues with IMM76D are probably contributing to at least some of your data connection issues.

Edit: Consider another email app too, one that allows you to set peak/non-peak times. If you don't use activesync, K-9 is worth a look. I use Touchdown, its not perfect but I need ActiveSync.
[BetterBatteryStats] bringonblink:
Ok thanks i'll have a look at that, everything else look ok?

i noticed "alarm_rtc" under kenerl wake lock which is at 35 minutes :S
[BetterBatteryStats] jeremysherriff:
That one is a bit confusing for me, I believe it's to do with stalled data connections and going into a failed/retry state because the sync connection failed for some reason, but the name implies something to do with the alarms, like AlarmManager. Google just led me back to it being part of the AlarmManager wake-up system.

Maybe someone knows for sure?
[BetterBatteryStats] Karpfenhai:
Thats afaik the Alarm_RealTimeClock which is responsible for any scheduled activity on the phone.
[BetterBatteryStats] jeremysherriff:
Yes I think hat is right, and the time can get high if whatever activity it kicks off (i.e. from an alarm) takes a long time to work and then exit, because this process stays running while the alarmed process runs.

So if Facebook sets an alarm to check notifications, alarm_rtc kicks the facebook process awake and waits for it to finish. If facebook stalls because the data connection is down (no cell coverage? server failure?) then alarm_rtc will have a high time recorded. I think. ;)
[BetterBatteryStats] itsLYNDZ:
I'm really losing battery life a percent every couple minutes when I'm in an area (underground) and my phone its searching for signal. I don't know what to do to make it stop
[BetterBatteryStats] jeremysherriff:
Airplane mode will help a bit, you need to be disciplined and also disable the background data option when you set airplane mode - some apps do check that setting so they won't spin out of control.

Can you tell us more about the underground situation? Is it a subway on the way to/from work? Or it your work, or home? How long are you in that situation?
[BetterBatteryStats] itsLYNDZ:
Well I live in Chicago, so underground its usually my room, Subway, bars....
[BetterBatteryStats] itsLYNDZ:
Is there an app that will disable both background data along with signal? My phone sucks enough of my battery itself. I really don't need anything else going against it.
[BetterBatteryStats] jeremysherriff:
I believe Tasker will do that and lots of other things, but I don't know how to work it. I think you can set up a widget/toggle arrangement, so one click carries out a series of settings changes, or you can set it to do it via a schedule instead of a manual click.
[BetterBatteryStats] itsLYNDZ:
I've tried taker but could never figure out how to get it to work, therefore it was useless to me and got delete. If someone could explain how to set it up to do that or any other battery tweaks that would be great
[BetterBatteryStats] Vangelis13:
Sorry if this has been mentioned already, am not close to pc; what is that error message?

Galaxy Nexus, CM9 nightly.
[BetterBatteryStats] Karpfenhai:
Get a newer baseband, honestly i didn't read your phonetype, but on samsung devices, the newer basebands have much better reception, for the cost of battery but not as worse as having no signal at all ;)
[BetterBatteryStats] KJ98653:
Hey guys everything looks pretty good in my log was wondering if there were any areas I could improve? The last few updates to my ROM has been poor for batt life, but ARHD 6.6.3 is very good with deep sleep compared to a few weeks back. Kernel stayed the same I believe.
[BetterBatteryStats] chamonix:
This is bbs failing to connect to the batteryinfo service binder. It used to happen a lot on miui based Roms and that's the reason for the specific error message. I have had this error only once on my devices covering all android versions from 2.1 to 4.04 so I can't unfortunately not figure out the reason. I even started a call and offered a few bucks for anyone who wants to get rid of a broken phone having that problem. For now I can only hope it resolves itself
[BetterBatteryStats] Vangelis13:
Wow, that special of an error huh.. :confused:

Any help I can provide? Troubleshooting perhaps?
[BetterBatteryStats] mahercs:
Ok, so if anyone would be so kind to maybe compare the two dumps I have here, I would owe them big time. The first one above is after about 3.5 hours of "alone" time and the second one below is from about 2 hours.

The drain on my battery is ridiculous, especially since I have the Razr Maxx that others are getting double and triple what I get. I don't stream music or videos, so it has to be something else and I've tried many things.
[BetterBatteryStats] riskaa:
One of the programs I use is called Setting Profiles. It has a widget from which you can toggle different profiles. So if you had a profile for "underground", it could disable data, put phone in airplane mode etc etc. Check it out here: http://www.probeez.com/

You can try the lite version before you buy it....it's one of my favorite apps. not quite as customizable as Tasker, but still very good!
[BetterBatteryStats] wadokai:
Hi can someone please take a look at my logfile and give me some feedback/help?
[BetterBatteryStats] itsLYNDZ:
My problem with airplane mode is that my phone still shows that it is searching for signal in the drop down notification thing

---------- Post added at 09:03 PM ---------- Previous post was at 09:01 PM ----------

Im not sure what a baseband is or does. What does it do?
[BetterBatteryStats] jeremysherriff:
It's the code and system portion that deals with the radio - eg 2g/3g and cell reception.

Your ROM is very old, are you able/willing to update the software to a newer ROM? That is likely to be 50% of the issue.
[BetterBatteryStats] itsLYNDZ:
I just flashed the Frankenstein ROM by Fishman. Im running a custom ROM on My Samsung Vibrant and am rooted. How do I update the software?