Database Users

Extreme Battery Drain

Hi everybody,
I've read all the threads on the battery problems, but I'm experiencing something different.
My phone is rooted but on stock rom. The last two days, my phone charges to 100% and when I unplug it, it stays there, but then throughout the morning, it drops drastically. yesterday I unplugged it at 5am, by 8:30 I was at 73%. I normally make it a full day 5am-10 at night, the lat couple days I'm lucky to make it to 4pm...
Any ideas or suggestions???
Sent from my Nexus S using XDA App

Download and install OSMonitor and see if the init process is continuously using 100% CPU. I've experienced this bug myself.
The current fix is to enable USB Debugging.
Sent from my Nexus S using XDA App

I just downloaded OS monitor, my cpu was at 39%. I am already at 82% battery and have barely done anything on the phone
Sent from my Nexus S using XDA App

Also usb debugging has been on
Sent from my Nexus S using XDA App

How many apps have you installed on your phone?

MadFerIt2011 said:
Download and install OSMonitor and see if the init process is continuously using 100% CPU. I've experienced this bug myself.
The current fix is to enable USB Debugging.
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
Thanks for that, it has been bugging the hell out of me why the CPU has been sat at 100% and the battery has been less than average.
USB Debugging now enabled and the CPU is scaling properly again.

I have 50 apps installed currently
Sent from my Nexus S using XDA App

Try wiping battery stats, then let the battery drain to 0% from 100%. Then charge the phone while it's off to 100% and it should be good to go .

Serious_Beans said:
Try wiping battery stats, then let the battery drain to 0% from 100%. Then charge the phone while it's off to 100% and it should be good to go .
Click to expand...
Click to collapse
I'll give this a try. Thanks!!
Sent from my Nexus S using XDA App

How do I wipe battery stats? Through recovery?
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mylexon20s said:
How do I wipe battery stats? Through recovery?
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Click to expand...
Click to collapse
yes.. clockwork recovery, its under advanced

mylexon20s said:
How do I wipe battery stats? Through recovery?
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Click to collapse
Yeah 10char

Ive had decent battery drain too, Stock rom but Root with Stock kernel with added voodoo. My battery life was worse with CM7, but better just completely stock. I think ill just go all out stock once i get the push for 2.3.3

robstunner said:
I think ill just go all out stock once i get the push for 2.3.3
Click to expand...
Click to collapse
Same here
Sent from my Nexus S using XDA App

ChrisJ said:
Thanks for that, it has been bugging the hell out of me why the CPU has been sat at 100% and the battery has been less than average.
USB Debugging now enabled and the CPU is scaling properly again.
Click to expand...
Click to collapse
No problem. It's a very odd bug and I'm hoping 2.3.3 fixes it.. As I notice another bug is introduced when USB Debugging is on .

So yesterday my battery was performing horribly. It died all the way, I then charged it from 0% to 100%. Usually it drops down to 97% right away, but it stayed at 100 , but once again dropped pretty quick. Its 9:30am, I took it off the charger at 5:00am and I'm already at 77% , with barely any use... Is this just me, or if this the norm.
Sent from my Nexus S using XDA App

MadFerIt2011 said:
No problem. It's a very odd bug and I'm hoping 2.3.3 fixes it.. As I notice another bug is introduced when USB Debugging is on .
Click to expand...
Click to collapse
Having applied the 2.3.3 update last night, I turned USB debugging off just to see if the /init process problem was fixed.
I'm happy to report that so far all is well, the CPU is scaling nicely and sitting nice and low when idling.

ChrisJ said:
Having applied the 2.3.3 update last night, I turned USB debugging off just to see if the /init process problem was fixed.
I'm happy to report that so far all is well, the CPU is scaling nicely and sitting nice and low when idling.
Click to expand...
Click to collapse
Reporting the same thing here, haven't noticed the bug reappear. Also loving the nice performance boost as well (1800 Quadrant score on stock 2.3.3!).
But, the colour change not so much .

As I use a colour calibrated monitor on my pc (for photo editing) I'm actually loving the new neutral white balance. I can understand why some peo people are finding it a bit muted though.
Sent from my Nexus S using XDA App

you cand try a custom rom from Cyberg. it`s very good. now a have ICS but he olso did a good job on Gingerbread.

Best kernal for cm7 battery

Wondering whats the best out there my phones eats two batteries in 4 hours even on idle not cool
Sent from my PC36100 using XDA App

Im having great success with savage zen cfs havs, I can usually get about 14 to 15 hrs Out of it
Sent from my frozen epic4g

Really can you link me too it thanks
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dezt818 said:
Really can you link me too it thanks
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
http://mirror.munkibizness.com/?build
then just search for latest cfs model. I've been using it since they joined together and its the best kernal for my battery.

+1 for savage zen cfs, just make sure you download the Gingerbread version of the kernel.

dezt818 said:
Wondering whats the best out there my phones eats two batteries in 4 hours even on idle not cool
Sent from my PC36100 using XDA App
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Click to collapse
Two batteries in four hours? Sounds like you're having deeper issues than swapping kernels.
Swyped from my EVO

i would say savaged zen BFS, uses less battery when idle as shown by the graph on the very bottom of this page:
http://home.comcast.net/~evoreviews/compiled.html

dezt818 said:
Wondering whats the best out there my phones eats two batteries in 4 hours even on idle not cool
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
You need new batteries or a new phone, dude. Srsly.
Sent from my PC36100 using XDA App

I'm personally getting nice battery life on the ported over Tiamat kernel.

Wipe your batt stats.

hooover said:
Wipe your batt stats.
Click to expand...
Click to collapse
...and properly calibrate the battery.
I think most people prefer to do this by doing this:
- Fully charge battery
- Wipe battery stats
- Fully drain battery without ever charging
- Completely charge to full

Root is required to wipe battery stats, correct?

Mindspin_311 said:
Root is required to wipe battery stats, correct?
Click to expand...
Click to collapse
Yes indeed.

how do you wipe the battery stats?

It you have amon RA recovery just boot into there, select wipe, then select wipe battery stats.

Savage Zen 0.1.2 I had 100% for two hours and fifteen minutes
Sent from my PC36100 using XDA Premium App

gharris040604 said:
Im having great success with savage zen cfs havs, I can usually get about 14 to 15 hrs Out of it
Sent from my frozen epic4g
Click to expand...
Click to collapse
+2.... and im' overclocked....1113

Ok, well that battery drain thing is NOT how you calibrate your battery and is highly recommended by HTC to NOT do that.
HEre is how HTC recommends you recalibrate your battery, and I can tell you, I did this and it works better than
expected:
http://forum.xda-developers.com/showthread.php?t=712990&highlight=battery+life
"To also help with Battery Life you can do these steps exactly: 1) Turn your device ON and Charge the device for 8 hours or more 2) Unplug the device and Turn the phone OFF and charge for 1 hour 3) Unplug the device Turn ON wait 2 minutes and Turn OFF and charge for another hour Your battery life should almost double, we have tested this on our devices and other agents have seen a major difference as well."
BTW, I'm loving the savagedZen kernel in my signature

lakers1624 said:
It you have amon RA recovery just boot into there, select wipe, then select wipe battery stats.
Click to expand...
Click to collapse
This can be done in clockwork mod recovery as well.

m4rk0358 said:
...and properly calibrate the battery.
I think most people prefer to do this by doing this:
- Fully charge battery
- Wipe battery stats
- Fully drain battery without ever charging
- Completely charge to full
Click to expand...
Click to collapse
Hi,
I tried this and it is strange. No matter what I do after I fully charge my batter it goes down immediately to about 95. I am getting ok battery life. I just installed the latest cfs Savage gen with this method. I just cannot get battery to stay at 100 percent . It might not be a big deal but just wondering if there is something I can do. I am going to let it drain all the way and charge to full and see.
Thanks,
Tangobango

Charging my phone

Whenever I leave my phone charged overnight, I wake up to around 70% charged. It's as though once it reaches 100%, it stops "charging" and it starts using the battery's energy, rather than the AC. Any help?

ahlexkim said:
Whenever I leave my phone charged overnight, I wake up to around 70% charged. It's as though once it reaches 100%, it stops "charging" and it starts using the battery's energy, rather than the AC. Any help?
Click to expand...
Click to collapse
What kernel/rom are you running. The only suspect is that your kernel does not have "trickle charge" in the new kgb kernel you have to enable this with the app.
Sent from my SCH-I500 using XDA App

I'm running a stock 2.3.5 Gingerbread.
Kernel is 2.6.35.7
What App is it?

ahlexkim said:
I'm running a stock 2.3.5 Gingerbread.
Kernel is 2.6.35.7
What App is it?
Click to expand...
Click to collapse
Using pure stock, like you are, im not too sure why trickle charge isn't working. Are you against flashing custom roms/kernels?
Sent from my SCH-I500 using XDA App

I'm not sure how the whole thing works... but I'll do it, doesn't seem too bad

ahlexkim said:
I'm not sure how the whole thing works... but I'll do it, doesn't seem too bad
Click to expand...
Click to collapse
Yeah its pretty simple man, find droidstyle's guide for roms and mine for kernels. That'll give you the info you need.
Sent from my SCH-I500 using XDA App

Is there any Custom ROM in particular that you would recommend?

go here http://forum.xda-developers.com/showthread.php?t=1238070 and follow step 2, then go to http://forum.xda-developers.com/showthread.php?t=1459905 readthrough the first part on TW kernels, choose one of the 3 custom kernels (not the stock one), best advice is to read the op of each one and find one you think will work for you. they are all three well written kernels. one is already oc'd to 1200, which means no need for voltage control if you plan to oc your phone. most phones are stable at 1200 but thats just from doing alot of messing around and odining. the second post is the instructions for flashing the kernel. the first post just explains all of them to the best i could w/o kanging any information from the op. i just ran what i knew off memory. links to each kernel's op are at the bottom of post 1. i did links to the op's instead of posting dropbox files due to the fact that I want people to make sure they know what features each kernel has before they download it.

I would give battery calibrator app a try. It could be that when you flashed your ROM, the battery stats got jacked up
Sent from my SCH-I500 using XDA App

kadin.zimmerman said:
I would give battery calibrator app a try. It could be that when you flashed your ROM, the battery stats got jacked up
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Click to collapse
Actually there are numerous threads and posts online saying battery calibration does absolutely nothing
And besides you can clear battery stats in CWM
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mkuehl06 said:
Actually there are numerous threads and posts online saying battery calibration does absolutely nothing
And besides you can clear battery stats in CWM
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Click to collapse
The way I understand it is WIPING BATTERY STATS Is pointless, battery calibration however is recommended. Heard this on many tech podcasts.
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icemanwbs said:
The way I understand it is WIPING BATTERY STATS Is pointless, battery calibration however is recommended. Heard this on many tech podcasts.
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Click to collapse
They are essentially the same thing. Battery Calibration is wiping the battery stats and running the phone dead than fully recharging.
I have been having a very similar issue. A buddy of mine (captivate) and I found that the phone wont charge past 98% on CyanogenMod with the Glitch kernel. I set the phone to not lock and keep the screen on while charging and the problem went away. The phone also would not stay on A/C power after reaching 98%. This issue was fixed too.
I think its an inherent problem with the batteries on the phones, since the issue occurs on many different roms/kernels/phones.

whether it's caused by the phone, ROM, or kennel, battery calibrator is a simple app that is at least worth a try in my opinion
Sent from my SCH-I500 using XDA App

kadin.zimmerman said:
whether it's caused by the phone, ROM, or kennel, battery calibrator is a simple app that is at least worth a try in my opinion
Sent from my SCH-I500 using XDA App
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Click to collapse
Imo opinion it didn't help me at all. But ive said that no two fascinates run the same. What works for one may not for the other.
Sent from my SCH-I500 using XDA App

[Q] Who is affected of bad battery capacity?

FIRST OFF: This is not about battery life!!
I asked a bit around and my friends get a much better result then me but as I wiped my data and after some cycels I get the same results again it seems like that my battery has a very low capacity.
So please share your experience here.
Data taken with battery monitor widget:
View attachment 1781587

We have a thread similar to this. It's in General.
http://forum.xda-developers.com/showthread.php?t=1992627
Sent from my Nexus 4 using Tapatalk 2

C0qRouge said:
FIRST OFF: This is not about battery life!!
Click to expand...
Click to collapse
I just want to talk about the mah not about anything else

Good luck on that! :thumbup:
Sent from my Nexus 4 using Tapatalk 2

it seems like, that my poor battery was caused by layer8. Also noticed that you have to not flash anything battery related (kernel, rom) because this seems to reset stats. I'll will stop flashing nightly and Kernel nightly and see were I will land with my N4.

C0qRouge said:
it seems like, that my poor battery was caused by layer8. Also noticed that you have to not flash anything battery related (kernel, rom) because this seems to reset stats. I'll will stop flashing nightly and Kernel nightly and see were I will land with my N4.
Click to expand...
Click to collapse
yea this true because Ive noticed when you keep dirty flashing roms and kernels it affects the rom performance and battery over time

matt1733 said:
yea this true because Ive noticed when you keep dirty flashing roms and kernels it affects the rom performance and battery over time
Click to expand...
Click to collapse
I flashed back to a stock. I didn't wipe anything afterwards. Is that considered dirty?

dirty flashing has nothing to do with it. i only dirty flash, even dirty flashed from 4.2.1 to 4.2.2, yet i have no battery issues, or battery stats issues.

AW: [Q] Who is affected of bad battery capacity?
simms22 said:
dirty flashing has nothing to do with it. i only dirty flash, even dirty flashed from 4.2.1 to 4.2.2, yet i have no battery issues, or battery stats issues.
Click to expand...
Click to collapse
This sounds like your experience with the battery life. But we are talking about the mAh.
Sent from my Nexus 4 using xda app-developers app

C0qRouge said:
This sounds like your experience with the battery life. But we are talking about the mAh.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
theres always a possibility of a defective battery, but dirty flashing doesnt have anything to do with it.

AW: [Q] Who is affected of bad battery capacity?
Yes that it's the question! Do I have the capacity of the battery regarding to its physical properties or do I have the capacity battery monitor widget is detecting?
The results of battery monitor widget are directly related to the knowledge of Android over the battery. So I guess you get the capacity which battery monitor widget is telling you.
Sent from my Nexus 4 using xda app-developers app

[Q] Android 4.3 battery drain?

Hi, i been noticing some battery drain after updating to 4.3 does anyone has this problem ?

Me too.

Yep me too....:thumbdown:
Sent from my Nexus 7 using Tapatalk HD

Hoppy063 said:
Yep me too....:thumbdown:
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Click to collapse

Hoppy063 said:
Yep me too....:thumbdown:
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Click to collapse
Odd, mine seems to be a lot better battery wise since 4.3... You might want to use BetterBatteryStats to pinpoint the cause (maybe some wakelocks etc.)

Flash a custom kernel.

Yes, me too, battery seems worse than in 4.2.2. Or is it just because that I use it more now i.e. to restore apps etc?

Really? Oh no!!
I'm still waiting on my ota update
Sent from my Nexus 7 using Tapatalk 2

dalanik said:
Yes, me too, battery seems worse than in 4.2.2. Or is it just because that I use it more now i.e. to restore apps etc?
Click to expand...
Click to collapse
Im gonna go back to 4.1.2 because it has the best battery life which 4.2.2 and 4.3 doesnt have

me too. Really hoped android 4.3 fixed this problem ;(

been having this battery drain problem ever since 4.2.2
Do you guys have this drain problem in IDLE mode? because I do..
rough estimate, it drains like 7 to 8% in one hour when my device is in SLEEP mode..

But to all this, what apps or services seems to be draining the battery?
Sent from my Nexus 7 using Tapatalk 2

I don't know what your talk in about, I'm getting better battery life than I ever did before. I'm UV by 25 running faux kernel (u21), and clean ROM. I just removed all the gapps I don't use, and don't run anything that needs background syncing. Did you guys do clean installs(full flash via fastboot)?
I also turned off daydream which I am suspicious of, yet I have no proof that it does anything

megabiteg said:
But to all this, what apps or services seems to be draining the battery?
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Thats the problem, I hard factory resetted several times and leave it alone with no new apps
installed before.. disabled NFC, my mobile connection.. and still it drains like a leaky hose in idle mode..
some friendly ppl here suggested installing greenify and betterbatterystats and stuff..
but it doesnt really help me pinpoint whats doing the draining.. maybe because I am not sure what I am looking at..
end result, i even flashed (nearly bricked my nexus on several occasions too) and still the drain is there..
I thought my battery is dying or something.. but my nexus is barely 6 months old.. and battery status shows it as GOOD..
so yea, I am stumped..

Yeap.
I am having the same problem with the battery, the battery is spent very quickly, I have less applications installed and lately I have not used the phone to see if it was me and nothing. It may be because manually install the OTA?

Does the rule of waiting a few days/recharge cycles to get a true sense of the battery not apply to Nexus devices like it does to Samsung devices?

downwiththebanksters said:
Does the rule of waiting a few days/recharge cycles to get a true sense of the battery not apply to Nexus devices like it does to Samsung devices?
Click to expand...
Click to collapse
The initial battery drain after flashing can be attributed to apps conducting their first sync and the kernel "settling." This only takes a matter of hours at best. After that, one can get a fairly accurate idea of how their battery is being tasked.
Sent from my SCH-I545 using Tapatalk 4 Beta

i used to get horrible battery drain until I disabled google now.

I'm also experiencing severe battery drain after taking the 4.3 update on my stock, unrooted Nexus 7. It's been 3 days and no improvement.
Sent from my Nexus 4 using xda app-developers app

I too face same problem, and the App sucking most of the battery is "Kernel (Android OS)", second one is "Launcher", "Phone" and "Android System".
Any suggestions solutions found for this battery issue?