Develop Bugs

Getting GREAT battery life with new ROM (Lost just 20% in 16 hours)

See here: http://forum.xda-developers.com/showthread.php?t=1361108
Lost just 20% in 16 hours. This is of course with JuiceDefender and airplane mode scheduled to run over night. But it's still impressive as we used to get battery drains even at times phone was supopsed to sleep and AirPlane mode on.
My baseband is UGKK7, but that's not what cured it, I had this baseband installed days earlier and battery drain was awful.
In my case it appears all battery problems are cured:
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What's your standby current draw? In my HD2 android, I had about 4-9ma. But in Galaxy Nexus it's about 19-40ma which is pretty high. Judging from your screenshot, yours is 16ma in standby?

Possibly, I have no idea. Nexus is known from high default cpu voltage, maybe thats that or maybe it's my apps waking phone every now and then to check things, for example LED light notification app or Juice Defender.
Anyway, I'm pretty happy now, might tweak it some more when I have time, but it's now at the same level as my old SGS2, I'd say a bit better (I think I had 5% night drop on AirPlane mode on SGS2, but again it depends on apps).

luffyp said:
What's your standby current draw? In my HD2 android, I had about 4-9ma.
Click to expand...
Click to collapse
Just checked: it was constant -5mA throughout the night.

Have you, knowing you want to see good results, un-knowingly played less with your phone on this rom?
Sent from my Galaxy Nexus using xda premium

Tjotte said:
Have you, knowing you want to see good results, un-knowingly played less with your phone on this rom?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
That's not it, I know battery will go down when I actively use it. What I noticed is that I get great results when phone is idle. This didn't happen before, you would see battery drain even when idle at night in AirPlane mode. This means light use should also give better battery performance than before, I will be testing that.
Sent from Galaxy Nexus using Tapatalk

This is with Google+ and Facebook signed in. I just disabled all notifications from these apps and they appear to function properly, do not keep awake when not run.

schriss said:
This is with Google+ and Facebook signed in. I just disabled all notifications from these apps and they appear to function properly, do not keep awake when not run.
Click to expand...
Click to collapse
I dont know what I did but while IDLe, I get about 1% drain per hour, thats on 3G, sync on (gmail, google+, etc), no juicedefender or airplane mode.
I only tested it overnight, when Im sleeping, notice the ZERO wake locks and crappy signal; unbelievable!
Disclaimer: this was while I was sleeping, NO usage. Battery obviously goes down much quicker once the screen is on, but for idle time, I am content!

schriss said:
That's not it, I know battery will go down when I actively use it. What I noticed is that I get great results when phone is idle. This didn't happen before, you would see battery drain even when idle at night in AirPlane mode. This means light use should also give better battery performance than before, I will be testing that.
Sent from Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
ok, thank you keep on testing and keep us informed, always nice to get some info! Merry X-mas!
Sent from my Galaxy Nexus using xda premium

thats great to see how long it lasts while youre not using the phone... but how about while youre actually using it?

voxigenboy said:
thats great to see how long it lasts while youre not using the phone... but how about while youre actually using it?
Click to expand...
Click to collapse
For real... All these people posting up 15-20 hours of battery by putting it on airplane mode overnight is just useless info. Especially when most people put it on the charger overnight
Sent from my Galaxy Nexus using XDA App

Happy! said:
For real... All these people posting up 15-20 hours of battery by putting it on airplane mode overnight is just useless info. Especially when most people put it on the charger overnight
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
It is not useless info. Previously, when putting in AirPlane mode and not using the phone at all we would see big battery drain. Now we don't. This is to proove that now the phone actually goes to sleep whenever I don't use it. This is proper testing before and after applying one change.

voxigenboy said:
thats great to see how long it lasts while youre not using the phone... but how about while youre actually using it?
Click to expand...
Click to collapse
I will know next time I go to work. But since I never use it for all these 8-10 hours straight, I should have better battery, because whenever I will put the phone away, even for another 15mins, battery will stop dropping like it used to.
In other words, it will most likely still drop as usual while actively using the phone, but in overall I should get more battery because of much more efficient idle times.

Battery went from 100% to 36% in 2 hours...

So I picked up my phone to read a text. I hadn't used it all morning, and yet, my battery was at 36% and the phone was very warm. So I look at the battery stats and see this:
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4.0.5 can't come soon enough. Hopefully it will actually fix the dying radio issues.

You have 4g on.. that's why
Sent from my Samsung GNexus <3

WOW! what a drop!
What ROM, kernel and baseband are you using?
4G can't be the only reason for such big a drop!

Looks like the phone lost signal and never found it again... draining the battery by looking for the signal.
Sent from my Galaxy Nexus using Tapatalk

On 4g and no signal for two hours; it is actually amazing that there was still battery left.
Try a different radio?
Or, up the minimum frequency of the cpu to 700Mhz (in case you have an extreme variant of the 4.0.4 bug).

Hardly surprising. Something is keeping your phone awake, probable the radio trying to connect to a network for over 2 h. A phone trying to connect without success for 2 h gets pretty warm, even more so on 4G and drains your battery quickly.

Look at your signal its horrible! And 2 hours screen on time.. Your par for the course.

WiredPirate said:
Look at your signal its horrible! And 2 hours screen on time.. Your par for the course.
Click to expand...
Click to collapse
His screen was barely on. The 2 hours was his phone trying to get signal.
Sent from my Galaxy Nexus using XDA

arzbhatia said:
WOW! what a drop!
What ROM, kernel and baseband are you using?
4G can't be the only reason for such big a drop!
Click to expand...
Click to collapse
AOKP build 29, Franco Kernel milestone 2, and one of the hybrid radios(I believe 4.0.2 and 4.0.3).
The drop is definitely from the phone losing signal and searching for it that whole time, as evidenced by the network signal being red and the phone being awake.

WiredPirate said:
Look at your signal its horrible! And 2 hours screen on time.. Your par for the course.
Click to expand...
Click to collapse
Here, in my house, my signal averages -80 dbm. The screen wasn't on for more than a few minutes. The radio simply lost signal and kept the phone awake trying to find one.

Vangelis13 said:
On 4g and no signal for two hours; it is actually amazing that there was still battery left.
Try a different radio?
Or, up the minimum frequency of the cpu to 700Mhz (in case you have an extreme variant of the 4.0.4 bug).
Click to expand...
Click to collapse
I DO have the CPU minimum at 700 mhz
I'll go to build 30 with a different kernel and baseband and see if this keeps up.

You are using a 4.0.3 radio for a 4.0.4 rom; upgrade to this radio & bootloader:
http://forum.xda-developers.com/showthread.php?t=1571715

Vangelis13 said:
You are using a 4.0.3 radio for a 4.0.4 rom; upgrade to this radio & bootloader:
http://forum.xda-developers.com/showthread.php?t=1571715
Click to expand...
Click to collapse
My radio dropping issues were even worse on the 4.0.4 radios. But it can't hurt to try again.

times_infinity said:
His screen was barely on. The 2 hours was his phone trying to get signal.
Sent from my Galaxy Nexus using XDA
Click to expand...
Click to collapse
Your right. My mistake.

ray3andrei said:
You have 4g on.. that's why
Sent from my Samsung GNexus <3
Click to expand...
Click to collapse
I've had this happen before when the network was set to CDMA only. It was only once though... My phone is completely stock and I can't wait for the update to hopefully resolve these problems. Otherwise I will have to start requesting replacements until I get a good one.
Sent from my Galaxy Nexus using XDA

ray3andrei said:
You have 4g on.. that's why
Sent from my Samsung GNexus <3
Click to expand...
Click to collapse
No it isn't.
The phone couldn't find a signal and was constantly searching.

SnrSuave said:
I've had this happen before when the network was set to CDMA only. It was only once though... My phone is completely stock and I can't wait for the update to hopefully resolve these problems. Otherwise I will have to start requesting replacements until I get a good one.
Sent from my Galaxy Nexus using XDA
Click to expand...
Click to collapse
Yeah. Since 4.0.5 is rumored to fix it, I'm holding out. I've had all sorts of issues with replacements, and my current phone is perfect except for the radios, which is hopefully just a software issue. Anyways, it's better now that I've wiped and everything, but it still drops. So I'm gonna try different basebands again.

WiredPirate said:
Your right. My mistake.
Click to expand...
Click to collapse
What about "his right"? Or do you mean "you're"?
Anyway, try the GladOS kernel. Honestly, Franco's Kernel was amazing a couple of months ago, nowadays.. not so much. I had a big increase in both performance and battery life with GladOS.

hi !
I also have this kind of battery drain... but I don't have 4G, my GN is GSM...
And the battery is draining with airplane mode on.. I'v made a lot of searches and still can't find the source of my problem

1.5 hour battery life

Battery life goes down 1% every minute the screen is on... This is rediculous. I'm running the latest franco kernel + liquid rom.

Uhhh cool story? Use your phone an entire day and post your battery stats when you're at < 5% battery left. Then we can talk about your actual battery life...

Let me bite this troll bait.
I'm sure this phone doesn't last 1.5hours, i'm sure mine doesn't.

@OP that's prolly why the guy sold it
good day.

You should be getting around 4 hours of screen on time, try different kernels if you don't achieve near this. I get 5+ hours everyday usign my set up, just look around at countless other thread to get an idea of what you can do.

chopper the dog said:
@OP that's prolly why the guy sold it
good day.
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Click to collapse
-.-
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I'm sure if I only left the screen on.. it would maybe barely last more than 2 hours.

Might have a bad battery
Sent from my Galaxy Nexus using xda premium

OP looks like you have some serious wakelock problems. And/or bad hardware.

exzacklyright said:
-.-
I'm sure if I only left the screen on.. it would maybe barely last more than 2 hours.
Click to expand...
Click to collapse
Try a different kernal. Come back if that doesn't work.
Sent from my Galaxy Nexus running AOKP+Franco

theking_13 said:
Try a different kernal. Come back if that doesn't work.
Sent from my Galaxy Nexus running AOKP+Franco
Click to expand...
Click to collapse
Um did you see that graph? He has more problems than just the kernel.

Is this cdma/verizon

Mine is and I'll fess up that this is pretty accurate. I can get about 4 hours screen-on time with my 3800mAh extended battery. The 2100mAh extended battery gets me about an hour screen on over the course of a day.
This screen is the hungriest thing I've seen in my life.

stkiswr said:
Is this cdma/verizon
Click to expand...
Click to collapse
yes
theking_13 said:
You should be getting around 4 hours of screen on time, try different kernels if you don't achieve near this. I get 5+ hours everyday usign my set up, just look around at countless other thread to get an idea of what you can do.
Click to expand...
Click to collapse
Which kernels besides franco give good battery life?

If you're getting 1.5 hours battery life then you're NOT using your phone, period. This is a smart phone, if you can manager more than 1 hour then you probably should have kept your StarTAC.
Edit: read a few more posts, wasn't troll bait it turns out.
As someone mentioned earlier in the thread, wakelocks are one avenue to explore. Install Better Battery Stats and follow the instructions/procedures, etc... from its thread here on XDA.

CMNein said:
If you're getting 1.5 hours battery life then you're NOT using your phone, period. This is a smart phone, if you can manager more than 1 hour then you probably should have kept your StarTAC.
Edit: read a few more posts, wasn't troll bait it turns out.
As someone mentioned earlier in the thread, wakelocks are one avenue to explore. Install Better Battery Stats and follow the instructions/procedures, etc... from its thread here on XDA.
Click to expand...
Click to collapse
How does 1.5 hours mean they aren't using the phone..?
Sent from my Galaxy Nexus using xda premium

|Jason8| said:
Mine is and I'll fess up that this is pretty accurate. I can get about 4 hours screen-on time with my 3800mAh extended battery. The 2100mAh extended battery gets me about an hour screen on over the course of a day.
This screen is the hungriest thing I've seen in my life.
Click to expand...
Click to collapse
That's God awful. Are you in a fringe area? The screen isn't THAT bad.. there is something else screwing you over.
Sent from my Galaxy Nexus using xda premium

exzacklyright said:
yes
Which kernels besides franco give good battery life?
Click to expand...
Click to collapse
If you are on 3g/4g and a verizon nexus on stock battery...2 hrs screen time is normal. Get used to it. Sorry. My wife's on stock 4.0.2 does exactly that. Pathetic. We bought an extended battery. Still might get in the 4 hour range. I love the nexus but damn the battery is terrible. I get 6-7 hrs screen on time on my maxx using 3g/4g. Today she got close to 4 hrs but it was a 4g/Wi-Fi mix.
Verizon nexus on 3g gets around 2 hrs screen on time if you actually are using data and keeping everything synced like a smartphone should be able to do.

stkiswr said:
If you are on 3g/4g and a verizon nexus on stock battery...2 hrs screen time is normal. Get used to it. Sorry. My wife's on stock 4.0.2 does exactly that. Pathetic. We bought an extended battery. Still might get in the 4 hour range. I love the nexus but damn the battery is terrible. I get 6-7 hrs screen on time on my maxx using 3g/4g. Today she got close to 4 hrs but it was a 4g/Wi-Fi mix.
Verizon nexus on 3g gets around 2 hrs screen on time if you actually are using data and keeping everything synced like a smartphone should be able to do.
Click to expand...
Click to collapse
THanks for the reply.. guess i have to leave it plugged in all day... lmao.

either that or get a sgs3... when it comes out

Gsm gnex (europe) on 4.0.4 gives between 4-5 h screen-ON time on stock setup and 1750mAh battery. Way to go verizon and LTE for ruining the phone's reputation. Most of the people reporting issues here on the forums are verizon or sprint users.
Sent from my Galaxy Nexus using xda premium

[Q] Insane battery life, is this normal?

Is this normal, an hour of web-browsing with screen on auto-brightness and phone drops from 100% to 71% ? Wifi was off, bluetooth on but not connected to anything. I have Better Battery Stats too, shall I post up? On stock ICS.
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with my experience with ics the first discharge is usually terrible but after a few charges battery life becomes better.
Sent from my SGH-T989 using xda premium

are you using wifi? if so yes

G1_enthusiast said:
are you using wifi? if so yes
Click to expand...
Click to collapse
He said the wifi was off, please read people.

not sure if "insane" means bad or good. But it looks about average. The average screen on time ranges from 3.5 to 4.5 hours. Mine is dead center of that.
Bluetooth not connecting to anything still drains a lot because it is constantly scanning for other bluetooth devices.
BTW your reception is in the YEllow. that means that also leads to battery drain.
So if you have better reception and your bluetooth is off then your battery would last longer.
Note: I use bluetooth a lot and I find it to be one of the biggest factors for draining. more than GPS and Wifi. Although, using wifi with strong signal actually saves battery.

Teo032 said:
The average screen on time ranges from 3.5 to 4.5 hours. Mine is dead center of that.
Click to expand...
Click to collapse
I really doubt that, because I did the same battery test Techradar* does, which is:
screen on full bright
Wifi on
Gmai, FB, etc all set to update as often as possible
Run a 1.5 hour long HD video full screen
At the end of that test I was at 84%. (the Video was on my SD card, not streaming)
In the video they have a graph of their stats for different phones using this test. GS2 and GS3 are top 2.
http://www.techradar.com/reviews/ph...laxy-s3-1078667/review/page:14#articleContent

96shox said:
I really doubt that, because I did the same battery test Techradar* does, which is:
screen on full bright
Wifi on
Gmai, FB, etc all set to update as often as possible
Run a 1.5 hour long HD video full screen
At the end of that test I was at 84%. (the Video was on my SD card, not streaming)
In the video they have a graph of their stats for different phones using this test. GS2 and GS3 are top 2.
http://www.techradar.com/reviews/ph...laxy-s3-1078667/review/page:14#articleContent
Click to expand...
Click to collapse
You're doubting that our phone doesn't last that... Uhh.. Short? I've had this phone since December and had many discussions with others on here about it and we agree that 4 hrs is about right.
So with that test you're saying that our phone can get over 6 hours throughout the say with normal use? Highly doubt it. You have to realize a couple things.
1. Wifi consumes less battery than 4g
2. You should factor in a normal days use that means including idle time i would say about 2% per hour maybe less.
3. Watching a movie means no "touch" interactions which means it consumes less battery than Web browsing or playing games.
So yes if you just leave the phone on the entire time without touching it. It'll last a long time. But with actually interacting with the phone and using 4g data. Most gets 4hr. Screen time in 17 hours of use ( you guys do get 7 hours of sleep right?)
I don't really believe that test. I know that the 4s battery sucks balls. Our phone lasts longer with our 4g on. It is saying that the one x is shorter?? One x and s lasts longer than our phone. So yeah.
Sent from my SGH-T989 using xda premium

Very normal to me.

96shox said:
Is this normal, an hour of web-browsing with screen on auto-brightness and phone drops from 100% to 71% ? Wifi was off, bluetooth on but not connected to anything. I have Better Battery Stats too, shall I post up? On stock ICS.
Click to expand...
Click to collapse
You obviously haven't met the DARKSIDE...

Teo032 said:
You're doubting that our phone doesn't last that... Uhh.. Short? I've had this phone since December and had many discussions with others on here about it and we agree that 4 hrs is about right.
So with that test you're saying that our phone can get over 6 hours throughout the say with normal use? Highly doubt it. You have to realize a couple things.
1. Wifi consumes less battery than 4g
2. You should factor in a normal days use that means including idle time i would say about 2% per hour maybe less.
3. Watching a movie means no "touch" interactions which means it consumes less battery than Web browsing or playing games.
So yes if you just leave the phone on the entire time without touching it. It'll last a long time. But with actually interacting with the phone and using 4g data. Most gets 4hr. Screen time in 17 hours of use ( you guys do get 7 hours of sleep right?)
I don't really believe that test. I know that the 4s battery sucks balls. Our phone lasts longer with our 4g on. It is saying that the one x is shorter?? One x and s lasts longer than our phone. So yeah.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
well i guess that test is to show the efficiency of the screen.

Rob4828 said:
with my experience with ics the first discharge is usually terrible but after a few charges battery life becomes better.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
I have to agree. Mine did exactly the same. After the 3/4 day battery life started to improve very noticeably. :good:

Jellybean batt life observation

Seems jb batt life is pretty bad. 2%/hr idle. Alot of wake locks also from maps and networklocator. :Im assuming all from google now?

Noticed that over the last 24 hours battery life was worse than usual while I was on jellybean. Think you are probably right that Google now is the culprit, I really hope that it gets better before the ota but at the moment it just doesn't seem like it will be worth "upgrading".
Sent from my Cyanogenmodded GNex

emerica243 said:
Seems jb batt life is pretty bad. 2%/hr idle. Alot of wake locks also from maps and networklocator. :Im assuming all from google now?
Click to expand...
Click to collapse
Well, it must be Google Now. I turned it off and my battery is relatively the same as it was before. When using background location update, you can expect it to drain battery a little. Google Now uses your location data quite a bit.

I left my phobe at 96% came back 4 hours later and still on 96
Sent from my Galaxy Nexus using xda premium

I thought JB was pretty good on the battery from my experiences. Did my overnight sleep test and it drained 3% in 8 hours just like ICS did.
As for screen on time, I feel that it's even better than before.
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I would be getting 4 hours screen on time if the battery drained to 0.
I'm very satisfied.
Sent from my Galaxy Nexus using xda premium

I'm getting pretty good batterylife with JB. Over 10 hours on battery and over 3 hours of screentime and I still got 40% left with 2000mah oem battery.

I have yet to flash JB, but one thing concerns me. Is this not just a dev preview and not the final product that will be pushed out mid-July? Not to sound harsh, but I don't see why complaints are being made about battery life at this stage of JB. Just my 2 cents, fyi...
Sent from my Galaxy Nexus using xda app-developers app

My battery life is no different.
You also have to remember this is a developers preview build and not the official release.
Sent from my Galaxy Nexus using xda premium

My battery life over the ~12 hours i had jelly installed seemed the same. Good standvy times also. I think it will depend on how much of the new stuff google added you use that will determine battery life. Some of that stuff will make a big impact.
butter and jelly please...

leelaa said:
I left my phobe at 96% came back 4 hours later and still on 96
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
What kernel are you on? and what freq\gov?

emerica243 said:
What kernel are you on? and what freq\gov?
Click to expand...
Click to collapse
All stock, changed nothing at all, for me its best that way (for now)
Sent from my Galaxy Nexus using xda premium

Even though its just a Dev preview and to early to comment on this, I think its about the same on ICS if not better.
Completely stock , not even rooted.
Sent from my Galaxy Nexus using Tapatalk 2

If you are getting bad battery life and wake issues, check your apps. I've heard LightFlow was causing wakelocks b/c it isn't optimzied for JB yet. I've deleted it until they can get it updated. So far, my battery life hasn't been great b/c I can't keep my hands off of it

Yeah, I would agree that battery life seems pretty good. It seems a little worse on Franco.kernel than stock, but hey, it's a new kernel and he is still trying to get all the kinks worked out. Also, no wakelocks on Light Flow, but I hope they update it soon, lots of my notifications stopped working.

Ehh I don't think its terrible at 2% an hour. Better than 10% an hour. I'll take a little drain for the beauty of JB
Sent from my JellyBelly Gnex

IMO I think it's draining a little fast, but I think that's because I keep flashing kernels and add-ons which reboots and causes the battery to drain super fast... and I've been messing with apps a lot too. So I'm gonna give it another day or two for a definitive answer.

kristovaher said:
Well, it must be Google Now. I turned it off and my battery is relatively the same as it was before. When using background location update, you can expect it to drain battery a little. Google Now uses your location data quite a bit.
Click to expand...
Click to collapse
How do i turn it off
Sent from my Jelly Beaned GNexus

I don't understand what people expect??? They want to have an awesome huge screen, fast processor, 4G speeds, want to run apps like crazy and then have Google Now constantly updating and expect the battery to last all day?? People just need to be realistic!

I'm completely stock and my battery is almost the same. Think it's a bit early to tell yet, we've all been playing more with the new rom
Sent from my Galaxy Nexus using xda premium

I am under the impression that the drain is slightly higher than on ICS, I am now 5,5 hours after charging, with 88% left (and a screen time of 18mins). On ICS I would be around 90 to 93% (with the 2000mAh battery). But nothing really to worry about.
Having said that, I did have lightflow installed and it did show in the wakelock screen, so I uninstalled that to see if the next charge gives me even better endurance.