Develop Bugs

Battery dead in 4 hours? (CM7)

So i charged my phone as usual, and four hours later it was crying for power. The problem is that i barely touched the phone during the four hours in question...
Here is a screenshot:
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The phone is about 2 months old. I flashed CM7 last week, however this is the first time my battery drops dead so fast, given i didn't have any apps opened or whatever... (i kill everything with Advanced Task Killer before turning off the display).
The sync and data traffic were both on, but that's how they are all the time...
Please help me figure out what happened. The phone is on the charger atm, I will check if the same thing happens again when it charges up.

Always, after flashing a new rom, you must run Battery Calibration...

As I said, i flashed CM7 last week and this is the first time my battery drops so fast... So i doubt it has to do with calibration... I will wait to see if the battery drops so quickly again after its recharged and if so i will calibrate it.

which cm7 did you flash? im using the 110822 boot179 nightly, and my phones dead in 12 hours... but that only started two days ago, im using it since the 25th!

Don't use task killer:
http://forum.xda-developers.com/showthread.php?t=678205
When system is out of ram it will automatically kill unnecessary process. And process which use ram only don't waste your battery

i use the ram optimizer (link in my signature), that works very good as well!

zakoo2 said:
which cm7 did you flash? im using the 110822 boot179 nightly, and my phones dead in 12 hours... but that only started two days ago, im using it since the 25th!
Click to expand...
Click to collapse
My defy is sucking so much energy that 700mah auto charger could not give enough power to navigate me to another town. I had real problems... When I have this kind of problems I wish I am still on 2.2
I am on cm7-110822-1650-BOOT179-4-Jordan.

upgrade to 110830/31 nightly, the boot179 has battery drain issues.
sent from my cm7 defy...

zakoo2 said:
upgrade to 110830/31 nightly, the boot179 has battery drain issues.
sent from my cm7 defy...
Click to expand...
Click to collapse
Hi,
I am having this kind of battery drain issue (not so big but still) with this kernel cm7-110822-1650-BOOT179-4-Jordan.zip.
Which kernel do you use and where can I find some informations about this kernel battery drain please?
I am following the cyanogen thread since some weeks now and a lot of people seems to use this kernel

zakoo2 said:
which cm7 did you flash? im using the 110822 boot179 nightly, and my phones dead in 12 hours... but that only started two days ago, im using it since the 25th!
Click to expand...
Click to collapse
I'm running cm7.1.0 RC1 v2 (which should be using the 179 kernel in question), i also applied the RAM patch from your sig, so I'm not using atkiller anymore, also i got the battery calibrated.
Phone's behaving fine now but I still got no clue as to what caused the problem or if any of the things that I did fixed it.

And it was all fine until last night when my battery dropped from 80 to 1% in about 8 hours when i was sleeping. I will be flashing 0901 later today... This is starting to get very annoying...

Update.
Yesterday I installed BatteryMonWidget and here's what happened last night:
-1171mA in the middle of the night with both data and sync off ...
I am running Nightly 0901 with battery calibrated and all, It was behaving the same way with RC1 v2, I didn't have BMW then but it was having the same kind of drops in the battery use graphs...
So any suggestions?

Looking at your battery during the loss it goes from 70% down to 49% - now a few people, me included, have a strange issue with the battery % at around the 49% level. Mine tends to go from 59% down 49% & this is only when I charge it to a full 100%. If I let it discharge lower than 49% then charge it to an indicated 95%, which the Defy actually reads as fully charge, then my battery discharges normally without any jumps. It's always been like this for me regardless of being on CM7, froyo etc. & makes no difference wiping battery stats or calibrations.
You could also get alogcat from the market & see if it shows any abnormalities during that time incase your issue is caused by something else.
Also if you keep an eye in your settings menu, battery use & see if Android OS is using a lot of battery at that time.
Likewise look in the spare parts app,battery history, other usage, CPU usage & see if any process seems abnormaly high - maybe "suspend" as this is an issue for many people at the moment.

Thank you for the reply.
About the charge-discharge drop - It happens to me too, but not on every charge/discharge... Today when I was charging my phone and it went from 77 to 100 in 5 minutes. (indicated as ~1400 mA jump by BMW). Also i had another huge drop in battery around 11am (42% to 19%)...
I have been keeping an eye on the battery usage statistics and CPU usage too, but nothing strange there...
You can see the two drops and the charge jump on the screenshot:

i've got the same issue like you 2! with RC1V2 my battery dropped from 54% to 49%.
now with RC1.5 it goes down from 59% to 49%.
that's very strange.

for what it's worth
For what it's worth-- I am running standard OTA Froyo, and after I noticed in just the past couple of months of very warm to darn near hot to touch, and dramatic battery power loss compared to when I first owned it, I started trying different things to manage that-- turning off Wifi, 3g etc-- what I found on mine was that turning off "background data" in the data manager settings, did the trick for me-- it has returned to the optimal power status/standby time I was used to, when I first started using it.

I haven't tried fiddling with the "background data" setting, but today i got the exact same drops at the exact same percentages, which leads me to believe that it has to do with the charge estimation method. So today i put a brand new battery in my phone and im waiting to see if there will be a similar dip in the charge level as with the older one.
Here's a pic of the drops:

Battery Calibration helped me, too !

Another update
After I changed the battery the drops disappeared, however i have a new smaller drop (60 to 50%), I have to see if it will appear again after the next charge. However my phone is alive and kicking after 48 hours of use with about 40% battery left. So I will go ahead and say that my old battery was faulty/misused or for whatever reason it was not performing optimally.
I will give it to a friend with a defy and ask him to install bmw and use it for a week and let me check the logs afterwards, i suspect they will be more or less similar to mine regarding the charge drops.

heating
btw, do you have heating problem? it might be becuse of some overclock or wrong vsel. check that too.

Greatly improved battery life (CDMA)

Last night I restored my phone using the factory image. For some reason I anticipate an OTA soon so I wanted to be ready. Anyhow, before I suffered from the battery drain bug. I forgot to charge my phone last night, and didn't realize it until I got in my car and put it on the car charger and it said 89%. My first thought was that my battery drained over 10% in the hour I was getting ready and not using it! Then I went into battery settings and found out I never charged it.. then I found some pleasant... well, I'll just show you.
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As you can see, I lost less than 5% battery during the 6+ hours my phone was unplugged. I had the phone in the living room charging while watching a movie. Then I unplugged and used it for about 20 minutes in the bedroom which accounts for the first rapid drop in battery. But after I set it down, the phone went into a coma. And I can't see exactly, but it looks like it was only 2 or 3% which is great!
Not sure what changed, I still have the same apps installed, even Facebook. I did, however, NOT disable VZ backup assistant like I normally do. Maybe that is what causes the OS to go bonkers? Thoughts?
Sent from my Galaxy Nexus using XDA App

I got about 20 hours out of mine yesterday (extended battery) with moderate usage (texting, ebay, facebook, web) This is after unlocking the bootloader and rooting. Unlocking the bootloader resets the phone to factory state. I've read a few other posts around the web where battery life is greatly improved after a factory reset. Android OS is still the main things devouring my battery, but I almost don't care with the performance I'm getting. I should also mention that I wiped battery stats from CWM and then calibrated the battery on first charge.
I'm no dev, so I don't know why a reset would help. Then again, maybe it was wiping battery stats and calibrating that helped me. Just my $.02

How did you calibrate the battery?

There's a free tool in the market that will calibrate for you. Have to be rooted though. Just search for calibrate.
Sent from my Galaxy Nexus using XDA App

Surprised this isn't getting more acknowledgement. Any one else experience the same after a reset?
Sent from my Galaxy Nexus using XDA App

Guess maybe I'm one of the lucky few...I've always had this type of battery life. The phone just sips power while the screen is off.
While it is on...well that's different. I keep the brightness high and get about 2-2.5 hours of screen time before it powers off.

The interesting thing here is that it seems that you have the Android OS constantly waking up the phone but yet it still barely uses battery.
Do you have location services turned on or off?

Turned on. I noticed that too but the overall awake time is low. Usually it would be over half of the entire time on battery, sometimes 100%.
Sent from my Galaxy Nexus using XDA App

I used 50% in about 3 hours on my extended battery.
fml.

Great battery life, but you didnt really use your phone much.
Your "Screen on" is only about 15% of those 6 hours. Which ends up being about an hour.
Still, none the less, great battery life/power consumption.

rpnunez said:
Great battery life, but you didnt really use your phone much.
Your "Screen on" is only about 15% of those 6 hours. Which ends up being about an hour.
Still, none the less, great battery life/power consumption.
Click to expand...
Click to collapse
I think you missed the point. I said this was done while I was sleeping. Many people are experiencing extreme battery drain even when they aren't using the phone, as was I. After restoring from the factory image, my issue seems to be gone.
Sent from my Galaxy Nexus using XDA App

kangxi said:
I think you missed the point. I said this was done while I was sleeping. Many people are experiencing extreme battery drain even when they aren't using the phone, as was I. After restoring from the factory image, my issue seems to be gone.
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
I unplugged my phone at 11:30 pm with 98%, woke up at 7:30 am today and it dropped to 76%. So a 20% drop in 8 hrs with the phone just sitting there with wi-fi on and no apps running. It'd be very interesting to see if a factory restore would help.
How's the battery life now that you're using it?

Im thinking of unlocking and rooting mine tonight. havent had a moment to read the walkthrough just yet.

i noticed this too last night/today. i went to sleep after installing bugless beast 4.0.3 cdma, left it off the charger, and today i saw the chart was pretty much a flat line. i don't recall the exact times, but i'll try to time it out. about 8 hours
i wonder if all the initial extreme battery drain reports are due to the 'wowanewphone' effect, where you are molesting your phone 24/7, as opposed to the typical day-to-day use you'll eventually fall back into

Spontaneously improving battery?

Is it just me, or is the battery spontaneously getting better? I don't use any juice defender or battery-saving apps, no setcpu, I have 4g data (not in an lte area), wifi, push email, a live wallpaper, and gps enabled (though it only comes on only when maps uses it, of course) at all times with normal automatic brightness on the screen, and I'm on stock rom, and I swear the battery lasts longer and longer all by itself. I used to get maybe 14-18 hours of moderate use, but now I get a little over 24 hours. Super heavy use, (and I mean streaming, screwing with framework-res.apk, backups, installs, etc) I get at least 12 hours, and if I'm using it lightly (still texting 10/20 times a day, push email, web browsing maybe half an hour a day, maybe a couple 5/10 minute calls), I get a day and a half, sometimes almost two days, like below:
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I don't think it's the battery, since I have two and they behave very similarly, so I'm not really sure what it is. Even when I visited some friends in a lte area, with lte active, moderate use, I was still getting around 16 hours. Anyone else experiencing this sort of... healing battery?

Pretty obvious your phone is draining heavily when in a lower signal area. Also, you have a TON of wakelocks. Not sure what you're running on your phone but there's something or many things keeping your phone awake despite your screen barely being used. I would expect my phone to last 3 days with that kind of usage...

Well, like I said in my other posts, the phone seems to improve itself in its battery usage. The first 2-3 weeks, I could barely hold charge for a whole day. Now, almost 2 months later, I can leave the phone uncharged from morning till nite with average use and still manage 5-10% left charge.

Haha, well, you're probably not going to get three days out of a nitro. Sorry! =)

itiskonrad said:
Is it just me, or is the battery spontaneously getting better? I don't use any juice defender or battery-saving apps, no setcpu, I have 4g data (not in an lte area), wifi, push email, a live wallpaper, and gps enabled (though it only comes on only when maps uses it, of course) at all times with normal automatic brightness on the screen, and I'm on stock rom, and I swear the battery lasts longer and longer all by itself. I used to get maybe 14-18 hours of moderate use, but now I get a little over 24 hours. Super heavy use, (and I mean streaming, screwing with framework-res.apk, backups, installs, etc) I get at least 12 hours, and if I'm using it lightly (still texting 10/20 times a day, push email, web browsing maybe half an hour a day, maybe a couple 5/10 minute calls), I get a day and a half, sometimes almost two days, like below:
I don't think it's the battery, since I have two and they behave very similarly, so I'm not really sure what it is. Even when I visited some friends in a lte area, with lte active, moderate use, I was still getting around 16 hours. Anyone else experiencing this sort of... healing battery?
Click to expand...
Click to collapse
aquariuz23 said:
Well, like I said in my other posts, the phone seems to improve itself in its battery usage. The first 2-3 weeks, I could barely hold charge for a whole day. Now, almost 2 months later, I can leave the phone uncharged from morning till nite with average use and still manage 5-10% left charge.
Click to expand...
Click to collapse
My experience is the same, the battery efficiency improved over the 1st month + of use.

My understanding is that rechargeable batteries have a "break-in" period, where it takes maybe a dozen or so cycles of (dis)charging to reach peak performance.
It seems with our batteries it just took a bit longer to reach its' peak.

Namuna said:
My understanding is that rechargeable batteries have a "break-in" period, where it takes maybe a dozen or so cycles of (dis)charging to reach peak performance.
It seems with our batteries it just took a bit longer to reach its' peak.
Click to expand...
Click to collapse
I agree. That is phenomenal battery life iamkonrad compared to what I've been experiencing..
Oh, when are you going to share those status bar goodies with the rest of us. ;]

If I'm not mistaken android collects battery stats, that uses to more accurately detect battery life. Perhaps that's the case here? If you clear batter stats with CWM, you should see different results.

could you also put screenshot of display usage. display takes a lot of power

idea
What would really be nice is if somone would make a thin case with a slim solar panel in the back of the case, you could lay it face down and have it charge from your office lights or at least supplement the battery... lol

How about make the screen itself a solar panel?
Well looks like it's already been thought about: engadget.com/2008/05/26/apple-files-patent-for-solar-cells-on-portable-devices/

Solar panels of that size would provide a minimal amount of juice to the device. It wouldnt really be worth it until photovoltaic efficiency improves..

debugger919 said:
How about make the screen itself a solar panel?
Well looks like it's already been thought about: engadget.com/2008/05/26/apple-files-patent-for-solar-cells-on-portable-devices/
Click to expand...
Click to collapse
That article was written 4 years ago... Looks like Apple couldn't do it, or didn't want to.

BeatByte said:
That article was written 4 years ago... Looks like Apple couldn't do it, or didn't want to.
Click to expand...
Click to collapse
Perhaps 2.5x5 solar panels are not able produce 1.1A juice.

hi itiskonrad. could you tell me what is the name of your battery monitor?

I don't have one. What I'm showing is just the battery info under settings, about phone

Battery life + great battery monitoring application

I just got my Glide a few days ago. From the specs of the phone and reviews online I was expecting the battery to last very long, but that hasn't been my experience.
My battery was going down about 10% every hour which means I would barely make it through a work day without charging it again.
I found a great app called Battery Mix that tracks battery usage and estimates how long the battery is going to last. It shows a number called P/H (percent per hour) which tells you how many percent per hour the battery is going down (or up if you're charging). You can find the app here: https://play.google.com/store/apps/details?id=jp.smapho.battery_mix
When I first installed the app I was getting about 12.5 P/H which means the phone will only last 8 hours. I then uninstalled a few apps that use battery, but that didn't help much. Somebody said their battery improved when they formatted their SD card, so I just removed the SD card from mine. Now my battery consumption is down to about 8 P/H. The best I've seen is 7 P/H. This is better but still would only get me 12 hours and I'm not running all the apps I would like to be running.
I have JuiceDefender running now on the balanced setting. I'm running the Osimood ROM with Android 2.3.5. I've removed all background network polling apps like Facebook. Android OS is using 56% of the battery followed by display at 15%, so there isn't anything else that's eating up my battery.
How is the battery life on your Glide? Could you please install this app so we can compare numbers?

Woah, 56% battery life for the Android OS?
On daily usage it barely gets above 20%. The screen takes most battery life.
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*Note that Anzeige = Display

Alex2221 said:
Woah, 56% battery life for the Android OS?
On daily usage it barely gets above 20%. The screen takes most battery life.
Click to expand...
Click to collapse
Thanks for the info.
Mine has been sitting on standby most of the day so that's probably why display is so much lower on mine than yours.
The high percentage of Android OS doesn't really worry me. It doesn't mean it's using a lot of battery; it just means it's using most of whatever is being used which could be a small amount.
Mine is doing much better now. P/H is down to 4.3 which means it could last 23 hours.
I really think the problem was the SD card. I'll pick up a different one after work today and see if it works better. I need a bigger one anyway.
I also found a thread that talks about corrupt image or video files on your phone causing bad battery life. That could definitely be what I'm experiencing. Should be fun figuring out which image is causing the problem.

what about downclocikng your cpu to 800? it will help i belive.

OK just installed it. I will let you know how mine is doing in a few days. I am fully Rogers stock.

I replaced the SD card and it seems to be doing better now. There may have been images on that card contributing to the problem.
I actually had GPS, wi-fi and bluetooth on the whole time. I've turned them all off now.
I've also underclocked it to 800. Thanks, taiber2000.
It looks like for the last hour it only dropped 3 percentage points.

If you are rooted and have ClockworkMod installed, you can sometimes get better battery life by resetting your battery stats. I think there are even some apps for rooted phones that will do it, but I don't have any experience with them. I can say, however, that resetting my battery stats using CWM increased my battery life significantly.
See here for one guide on how to do it: http://www.droidforums.net/forum/bugless/111009-get-better-battery-life-reset-battery-stats.html

sjbotha your welcome.
i belive i will do the same when i'll get my phone as well. altugh i will install the OC rooted kernel for better overall performance i will still downclock via software, not need the extra sterngh for my uses and i better have longer use time then CPU power.

I get 4.9 but the other day I was getting 12. All I did was Reboot my phone and I haven't started many apps. I think when they start they stay in memory.
Sent from my SAMSUNG-SGH-I927R using Tapatalk

Mine depends on usage:
-about whole day wifi-on with 3 hours games and calls; if battery is 100% at 6am, it will be 20-30% at 10pm
-whole day HSPA+ on, 2 hours phone calls + SMS/MMS, emails etc; if battery is 100 at 6am, it will be 50-60% at 11pm or before I sleep...
in terms of P/H:
-i get 3-5 P/H when wi-fi, Auto-Sync is on.
-i get 2-4 P/H on HSPA + Auto-Sync on.
-about 1-2 P/H or sometimes a straight line on Battery Stats when Idle, no data connection and/or auto-sync is on.
in other words, the glide can handle my needs in a whole day without completely draining it's battery.

Is this battery usage normal?

In 3 hours, mostly standing by, it drops to 87%
I have no idea why "Android System" gets 23%
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well, if you're not using the phone, with apps or whatever.. then something else has to take the place of the 'most used' application..
I hope this isn't the "omg android system is using all my battery" again that I seen all over the gs2 forums when it came out
attached is a screenshot of my battery usage, I been streaming music all day at work.. mostly wifi, screen on a generous amount of time.. browsing xda, internet.. even played around with autodesk sketchbook..

Just got the phone today, it's been ridiculous. I've recharged my phone from 20% to 95% twice today. Granted, I've been using it non-stop
Now at 65%. Just terrible!
Android System 38%
Screen 20% (time on only 2h 5m)
Android OS 11%
Facebook 8%
Cell standby 5%
I had a lot of sync crap turned on that wasn't on my note 3 (like auto sync photos to google cloud), as well as some other settings that I just turned off like AT&T Address Book, and several google sync services I have no need for. Hoping that fixes it, I'll know tomorrow!
Android System.. that is where it would be syncing photos, right? I'm thinking that must've been it.

Get a wakelock detector
Sent from my SAMSUNG-SM-N910A using XDA Free mobile app

I've noticed that is phone really really wants to have full gps on stand by at all times.
Can't wait to get that battery update. But when that happens maybe never

Jennygirl said:
Just got the phone today, it's been ridiculous. I've recharged my phone from 20% to 95% twice today. Granted, I've been using it non-stop
Now at 65%. Just terrible!
Android System 38%
Screen 20% (time on only 2h 5m)
Android OS 11%
Facebook 8%
Cell standby 5%
I had a lot of sync crap turned on that wasn't on my note 3 (like auto sync photos to google cloud), as well as some other settings that I just turned off like AT&T Address Book, and several google sync services I have no need for. Hoping that fixes it, I'll know tomorrow!
Android System.. that is where it would be syncing photos, right? I'm thinking that must've been it.
Click to expand...
Click to collapse
A background process is eating your battery. I have gotten over a full days use with 3 hours or more of screen time and still at 35%, that or you got a bad battery. This phones battery life is incredible

Since I just got my phone this morning, I will have to report my batter usage later.
However, the phone charges SUPER FAST!

I'll tell you when it doesn't charge fast, I plugged it into my S3 charger last night at 11% and it still wasn't at 100% when I woke up about 9 hours later. Yesterday I got 3 1/2 hours of screen time after starting at 70% when I actually got the phone around 5 pm. The phone was under HEAVY use (downloading updates on LTE, customizing, etc.) I'll be interested to see how it does today under mostly normal conditions.

Thermalwolf said:
A background process is eating your battery. I have gotten over a full days use with 3 hours or more of screen time and still at 35%, that or you got a bad battery. This phones battery life is incredible
Click to expand...
Click to collapse
Glad to hear you feel that way! Thank you for the glimmer of hope! I have a feeling you are very right, and that it could have also had a lot to do with the huge amount of downloading I was doing yesterday. Today should be a much more normal day of use. I'll check back in a bit.

My battery went from fully charged to 94% in a matter of minutes just using the Internet. I decreased the screen brightness and removed the sync from some apps. If I don't see an improvement before my 14 days is up this is going back.

I also realized power saving mode was not enabled. After enabling that and disabling all unnecessary sync services, I'm stoked.
Usage seems to be great now, too.
81% battery left so far today
1h30min screen on time
3h23min total
Screen 33%
Android Sys 21%
Android OS 13%
Stellar!

Jennygirl said:
I also realized power saving mode was not enabled. After enabling that and disabling all unnecessary sync services, I'm stoked.
Usage seems to be great now, too.
81% battery left so far today
1h30min screen on time
3h23min total
Screen 33%
Android Sys 21%
Android OS 13%
Stellar!
Click to expand...
Click to collapse
You shouldn't have to use power save to get good battery performance. You definitely have a bad battery

Really? It seems pretty good to me now.
Is there a wake lock detector you would be able to recommend? Looks like it needs root?

I let my battery completely drain where it cut off at 1% and let the battery charge fully. Powered it back up and made sure nothing was syncing that I didn't need and now the battery seems to be performing better then before.

My battery usage today
Was on web and Facebook most of the time, downloaded some new apps, and uploaded a video to vimeo

Battery is quite short of impressive, and my N3 charges much much faster.

1brainsurgeon said:
Battery is quite short of impressive, and my N3 charges much much faster.
Click to expand...
Click to collapse
Either you have fast charging turned off or something is wrong with your charger/battery. turned off my phone charged 0-100% in 79 mins.

Yeah, his phone is broken or misconfigured if it charges slower than a Note 3. I've owned both, and the note 4 charges WAY faster.
Sent from my SAMSUNG-SM-N910A

I agree it is very noticeably faster. N3 was decent already with the provided charger, but N4 charge blazes.
Kinda want to get that Qualcomm fast charge 2.0 car charger so I can charge from 12v sources. The standard usb 5v 500mA regulated charge is pitiful

I have to constantly kill Index Service. It's loading CPU up to 100%. There's a bug since at least Note II. If you have large PDF files or many files of any kind, it will never finish indexing. Some reports link it to 64GB cards, but mine does it even without the card.