Develop Bugs

Fantastic battery life on 4.2

Battery life is very good compared to the previous releases. I ran for forty minutes with Bluetooth turned on while listening to tune in radio and using endomondo app. Google now turned on. I lost fifteen percent compared to losing 35% with similar usage. Very satisfied.
What do you think?
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Sent from my Galaxy Nexus using xda premium

Why would you make a thread linking to a post you made in another thread?
Bit unnecessary. To answer the question it's too early for me to thoroughly test battery life.

Bump
Sent from my Galaxy Nexus using xda premium

thats not fantastic at all...

I would wait for at least 2 complete battery cycles to make a thread like this.

ssvijay said:
I would wait for at least 2 complete battery cycles to make a thread like this.
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Ditto. My phone ran like a champ on a freshly flashed ROM. Then my phone realized it was born as a Verizon-Nexus mutt and had a psychological breakdown to the point of 1.75 hours of on-screen time the day after.
Twas a sad day

I'm reading my work email over the exchange service account. After upgrde to 4.2 the exchange service process eats my whole battery so I can't tell about any improvement.

True
Sent from my Galaxy Nexus using xda premium

When it comes to battery life (in general, though especially true with this newest release), it's crazy how many divergent opinions you get. Some people claim to get amazing battery life (exactly what quantifies for amazing?) and some people claim the battery life is crap. This is just to remind you that unless you have a good way of measuring battery life, your measurements can be plus/minus hour(s). Someone who just leaves their phone on a black screen with no wi-fi and cell may get 10 hours of screen-on time. Someone who is watching videos with cell/wi-fi might only get 2 hours of screen-on time.
In the future, I can make two recommendations:
Always report a complete cycle (from 100% to close to 0%). This is because the battery does not discharge at a constant rate.
Always report screen on time
Average for GNexus in previous builds was 2-4 hours. I've no idea about the plus/minus, but they tend not to be under 2 and over 4 with moderate usage. I think an average of 3-3.5 hours is what most people are happy to report.

And that is really sad because my old atrix used to get over 8 hours on Wi-Fi with over twelve hours of standby time. I wish they would make this phone but with a smaller screen size. The technology used on this phone is not battery efficient at all.
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modgadgets said:
True
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This tells us nothing....u don't show ur screen on time and uve been charging off and on..

Battery life in sleep mode is worse for me. I am losing 3% an hour with the screen off, I used to lose only 3% total overnight with the screen off not per hour. I tested this over the last 4 hours only waking the tablet up long enough to check the battery level and it has gone down by 3% each time. Nothing has changed with any apps or setting since I upgraded from 4.1.2 to 4.2. I got concerned when I noticed this morning that my battery was over 15% less then when I went to sleep. Anyone else notice this?

This is very good battery by my standards.
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Soldier 2.0 said:
This is very good battery by my standards.
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Not great by mine....and I have an LTE GNex

This is my battery life stats after using 4.2 for 2 days... Is it good?
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The screen on time is good but not much of an improvement. Also it appears you had WiFi off for most of the time.
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Last shot before my battery dies...
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re
50% left 23h 11m on baterry. wifi and location on all the time and 10% wasted on need for speed most wanted also. brightnes at 80% aprox. im very pleased with the baterry really maybe becouse the phone is relatively brand new and the battery still very fresh allways charging with care after discharge not on and off the charger all the time

yeah using the 4.2 factory image with trinity a4 and getting great battery life

Is battery suppssed to be this bad?

This is my first tablet and I expected battery to be better than this. Day 3 with the tablet, stock unrooted.

VinBertinelli said:
This is my first tablet and I expected battery to be better than this. Day 3 with the tablet, stock unrooted.
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Click to collapse
Yes is it supposed to be better then that. Although, it is possible the battery power software has a bug in it. But it should not be dropping like that when idling.

VinBertinelli said:
This is my first tablet and I expected battery to be better than this. Day 3 with the tablet, stock unrooted.
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Click to collapse
Theres definitely something up with your unit. Have you let it cycle from a full charge to 0 a couple times?

alexjzim said:
Theres definitely something up with your unit. Have you let it cycle from a full charge to 0 a couple times?
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Click to collapse
This shows nothing without actual screen on time.
I dont think the op's battery is that far off. An hour of screen on time plus an hour of streaming music. Streaming uses a lot of battery.
If you kept at that rate it would be able 3 hours screen time and 3 hours music streaming.
Sent from my Nexus 4 using xda premium

Yeah, media server is a battery killer I've noticed.
Sent from my Nexus 7 using xda app-developers app

michaelg1030 said:
This shows nothing without actual screen on time.
I dont think the op's battery is that far off. An hour of screen on time plus an hour of streaming music. Streaming uses a lot of battery.
If you kept at that rate it would be able 3 hours screen time and 3 hours music streaming.
Sent from my Nexus 4 using xda premium
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Click to collapse
67% with one hour screen time is a bad. Should be around 80% at the least with screen on time of one hour.
My battery isn't great either. But not as bad as op
Sent from my Nexus 7 using Tapatalk 2

Posted a thread about mine but I thought I may as well post here too...
My battery sometimes drops more than one percent at a time.. Is that unheard of... Is that just the battery "settling in"?

I don't have any issues with my battery.
Sent from my Nexus 7 using xda app-developers app

Battery is fantastic here
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Krowbarr said:
Battery is fantastic here
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+1 I have the same time +-

1st full charge
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I will try to charge today 2A charger maybe will be better..

If anyone rally thinks the battery is an issue try stock and try removing the apps that run all the time. This would at least tell you if it is your battery out just processes. It is tough these days to not have a bunch of crap running all the time. Many of the app devs add these things trying to find info, etc
Also.. Sometimes will run the battery down faster than others. Streaming media is a killer, video, gaming, etc.. Don't expect mega screen time doing that.
Also.. Check your brightness.
Sent from my Nexus 7 using xda app-developers app

How was the battery life??

I just get the Nexus 7 yesterday and i think the battery life was excellent
5 hours and 45 mins screen on time and 1 day and 8 hours of standby time
How was yours share it out
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Mine is not looking to good..
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Sent from my Nexus 7 using xda app-developers app
I tried to upload both screenshots but it didn't seem to work. 2 days 13 he's 20 minutes with 35% charge left. That was with 7.5 hrs of screen time. I got almost another hour of screen time before I recharged.
This was with mostly browsing or reading ebooks with Wi-Fi on while the screen is on, but Wi-Fi off when the screen is on. I had some weird media server draining my battery while the tablet was idle, so I set it to shut Wi-Fi off while the screen is off.

This is my screenshots i think it was alot better than the previous nexus 7
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I don't know whether or not i should return mine. I can't seem to get nowhere near the average battery life that folks are getting, while having my screen to 40‰ brightness, airplane mode on, and wifi off when screen is off... Im running on stock w/o root yet.
Sent from my sexy One XL:
hboot 2.14
s-off, post 3.18 ruu, AT&T
rooted, unlocked, twrp 2.6

abot 3 days in the low screen light and powersave governor circumstance limit cpu freq will be longer

Flashing kernel was also a good method to solve the problem or maybe make a factory reset may get better battery life
It depends your option
Actually battery life depends on how do u use the tablet maybe the next firmware update can ease the problem
Sent from my Nexus 7 using xda app-developers app

JCon0320 said:
I don't know whether or not i should return mine. I can't seem to get nowhere near the average battery life that folks are getting, while having my screen to 40‰ brightness, airplane mode on, and wifi off when screen is off... Im running on stock w/o root yet.
Sent from my sexy One XL:
hboot 2.14
s-off, post 3.18 ruu, AT&T
rooted, unlocked, twrp 2.6
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Click to collapse
40 percent is bright. This tablet has a very bright display. At full brightness its 583 nits. For comparison the iPad 4 is 407 and the iPad mini is 378.
40 percent of this devices brightness is about 225 nits. Want better battery. Turn down your brightness. Nothing is wrong with your device.

I mainly use mine for internet & YouTube & yesterday had over 9 hours of screen on time with lowest brightness

Battery draining at 1% every 3-4mins
How do you recalibrate the battery?
My battery is draining at >1% every 3-4 mins
Wifi ON, brightness- lowest possible.
Processes: FB, wechat, android stuff.
And im not doing anything to it.. I get around 5-6 hours
Any tips?

Maybe there were some apps running in the background
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Don't know how accurate this is since my Nexus restarted itself and it lost some juice in the process but here it is.
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It seems lost a lot of juice in that reboot so u can try one more time without reboot and it may get better standby and screen on time
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This was mines i think it was exellent
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Toepack24 said:
How do you recalibrate the battery?
My battery is draining at >1% every 3-4 mins
Wifi ON, brightness- lowest possible.
Processes: FB, wechat, android stuff.
And im not doing anything to it.. I get around 5-6 hours
Any tips?
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Click to collapse
There is no such thing as battery recalibration. Get rid of running Google services you don't need and monitor which apps keep the tab awake, kill them too. FB is quite heavy on the system, Chrome too, try lighter alternatives.

My 32 gb is stock rooted atm, but battery life is great. Might even just leave stock alone for a change (although thats doubtful).
Yesterday let the tab sit with screen on while i was working. Almost 6 hours of screen on dropped battery to 50%.
Screen was set to about 1/3 max brightness.
Sent from my Nexus 7 using Tapatalk 2

This is a very bad one.

Celkin yours were really good
But cas-xp why you do not use your tablet where is your screen on time
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Ive used my tablet up to 2% battery left, maybe, up to 10-15x..
now im draining around 15-20% per hour.
Ive done a factory reset already, still its like that.. Do you think because of that battery treatment, i could have messed up my battery?

Battery life.

I've got to say, battery life is pretty bad with this phone. I bought it brand new yesterday so not sure if it needs to condition itself or not but I came from a LG G2 which has a 3000mah battery, which is slightly smaller than this but battery life was far better. Granted the screen was slightly smaller but still. Is there any Roms that improve battery life but still relatively stock?
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Have you disabled all the smart scroll and air gesture stuff? Its useless and hogs battery life. Auto brightness and juicedefender and I can rock it for 2 or 3 days straight.
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http://i.imgur.com/sKfqg7p.jpg
antoni908 said:
Have you disabled all the smart scroll and air gesture stuff? Its useless and hogs battery life. Auto brightness and juicedefender and I can rock it for 2 or 3 days straight.
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I have NFC, GPS disabled and this.
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C-4Nati said:
I've got to say, battery life is pretty bad with this phone. I bought it brand new yesterday so not sure if it needs to condition itself or not but I came from a LG G2 which has a 3000mah battery, which is slightly smaller than this but battery life was far better. Granted the screen was slightly smaller but still. Is there any Roms that improve battery life but still relatively stock?
Sent from my SM-N900T using xda premium
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How long is it lasting for you?
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Ya, this sounds bizarre.. I've found this battery to be amazing. How long is it lasting? I've had mine for less than a week and I've used it heavily everyday. I have not even had to worry about charging during the day. 24 hours no problem.

Same here. The first week it was lasting all day but with only 3 hours of screen on time. After some tweaking, I'm currently getting still 20ish hours with 5-6 hours screen on time.
Sent from my SM-N900T using Tapatalk 2

I just don't get it. A lady I know has the sprint variant and I looked at her settings and she had 15 and a half hours off the charger with 5.5 hours screen on and had gps and all the air features on as she's not tech smart so her phone was like out of the box and her brightness was up. I have a custom ROM with GPS, NFC and all the air gesture **** off with the screen at like 35% brightness and I get no where near that.
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NeoAndroid said:
Same here. The first week it was lasting all day but with only 3 hours of screen on time. After some tweaking, I'm currently getting still 20ish hours with 5-6 hours screen on time.
Sent from my SM-N900T using Tapatalk 2
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Also what tweaks did you make? I should rephrase that I get good battery life with the screen off, it lasts all day but screen on time is horrible.
In this pics android os and google play services is destroying battery. The screen time was only like 1 hour and 15 minutes at that time.
http://imgur.com/vzoQgt3
http://imgur.com/I0mY4Nd
http://imgur.com/ej5GMGh
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C-4Nati said:
Also what tweaks did you make? I should rephrase that I get good battery life with the screen off, it lasts all day but screen on time is horrible.
In this pics android os and google play services is destroying battery. The screen time was only like 1 hour and 15 minutes at that time.
http://imgur.com/vzoQgt3
http://imgur.com/I0mY4Nd
http://imgur.com/ej5GMGh
Sent from my SM-N900T using xda premium
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I'm still stock Rooted. I'm using Greenify app to kill most apps in the background.
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NeoAndroid said:
I'm still stock Rooted. I'm using Greenify app to kill most apps in the background.
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I downloaded that we'll see how it works. Like I said the battery easily last 24 hours with medium to little use but it dies fast while using the screen on, I'm seeing others with everything on like GPS, NFC and al the touchwiz things with their brightness up getting far better on screen time than me with everything off and brightness dimmed

Any suggestions appreciated. Anyone try an extended battery yet ?
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Stock rooted, I was getting about 24 hours per charge with about 6-8 hours of screen time.
I just recently installed Faux123's kernel and enabled the Intelliplug and Intellithermal drivers, now I'm getting about 60 hours per charge.
http://forum.xda-developers.com/showthread.php?t=2500888

trek7000 said:
Stock rooted, I was getting about 24 hours per charge with about 6-8 hours of screen time.
I just recently installed Faux123's kernel and enabled the Intelliplug and Intellithermal drivers, now I'm getting about 60 hours per charge.
http://forum.xda-developers.com/showthread.php?t=2500888
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Well my actual battery just must not of been created equal with other phones because after tweaks I'm getting better battery life but only about 5 hours screen time and I have everything turned off with screen on 35% so I don't know :/. I'll check that kernel out.
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C-4Nati said:
Well my actual battery just must not of been created equal with other phones because after tweaks I'm getting better battery life but only about 5 hours screen time and I have everything turned off with screen on 35% so I don't know :/. I'll check that kernel out.
Sent from my SM-N900T using xda premium
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Doesnt Facebook app drain battery? Unless it's been fixed recently that right there is battery drainer.
sent from my sm-9005.

trek7000 said:
Stock rooted, I was getting about 24 hours per charge with about 6-8 hours of screen time.
I just recently installed Faux123's kernel and enabled the Intelliplug and Intellithermal drivers, now I'm getting about 60 hours per charge.
http://forum.xda-developers.com/showthread.php?t=2500888
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Click to collapse
60hrs!?!? That's awesome, what's your screen time look like? Could you go indepth about your settings and what rom your using to get this number. Thanks!
Sent from my SM-N900T

@rbiter said:
Doesnt Facebook app drain battery? Unless it's been fixed recently that right there is battery drainer.
sent from my sm-9005.
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That percabtage is from me using it though.
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C-4Nati said:
That percabtage is from me using it though.
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Well if that is the case your battery life isn't terrible. 24h with 5h SOT and 24% life isn't bad at all. Its not great but it is far from terrible.
sent from my sm-9005.

GallardosEggrollShop said:
60hrs!?!? That's awesome, what's your screen time look like? Could you go indepth about your settings and what rom your using to get this number. Thanks!
Sent from my SM-N900T
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Click to collapse
I'm just using the stock ROM, rooted with the Kingo Root app. Installed TWRP and then Faux Kernel (hltetmo-faux123-003u)
Be warned, TWRP did trip the Knox counter to 0x1. I had to install Knox Disabler so it would stop complaining.
I was getting about 24 hours per charge, until remembered about the FauxClock app and enabled the Intelliplug driver and Intellithermal manager. About this time, I also installed Advanced Task Killer after going without it for a few years.
Screen brightness is on auto, WiFi and mobile data are both on constantly. I have not had to make many calls though, so I'm not sure how this may affect battery life...
So far, I haven't noticed any decrease in performance. Right now I've been on battery for 30 hours and I have 45% left.

@rbiter said:
Well if that is the case your battery life isn't terrible. 24h with 5h SOT and 24% life isn't bad at all. Its not great but it is far from terrible.
sent from my sm-9005.
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Because of adjustments... Custom ROM and kernel, Screen is at 35%, gps and all location services off, NFC off, all the phones extras like air gestures multi window etc are off, I use greenify to freeze apps and I have most Google syncs off and I'm only able to achieve this. I know a lady who knows nothing about phones and has everything/feature on the phone turned on with full brightness and gets 15.5 off charge with 5.5 screen on time by the time she's at 30%. I don't get it.
Edit- I should note I made this post while stock. Because I heard phenomenal things about this phones battery and was quite disappointed.
Sent from my SM-N900T using xda premium

C-4Nati said:
Because of adjustments... Custom ROM and kernel, Screen is at 35%, gps and all location services off, NFC off, all the phones extras like air gestures multi window etc are off, I use greenify to freeze apps and I have most Google syncs off and I'm only able to achieve this. I know a lady who knows nothing about phones and has everything/feature on the phone turned on with full brightness and gets 15.5 off charge with 5.5 screen on time by the time she's at 30%. I don't get it.
Edit- I should note I made this post while stock. Because I heard phenomenal things about this phones battery and was quite disappointed.
Sent from my SM-N900T using xda premium
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Click to collapse
Signal strength and the binning of your CPU could be differentiating factor. Reading into other people's experience too much can lead to disappointment.
sent from my sm-9005.

[Q] battery life isn't consistent ?

Hey guys so the title says it all really. When I first got this tablet ( a month ago ) I was getting 8,5 hours of screen on time and now I'm getting less?
I'm on 4.4 running art. With auto brightness and sync on and I'm at 32% with nearly 4 hours of screen on time
Has this happened to anyone else? Thinking about flashing a custom ROM and kernel
J
Sent from my Nexus 7 using xda app-developers app

Battery life and sound both for me. They were a bit better on 4.3.
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JackHanAnLG said:
Hey guys so the title says it all really. When I first got this tablet ( a month ago ) I was getting 8,5 hours of screen on time and now I'm getting less?
I'm on 4.4 running art. With auto brightness and sync on and I'm at 32% with nearly 4 hours of screen on time
Has this happened to anyone else? Thinking about flashing a custom ROM and kernel
J
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Ameer Shimoga said:
Battery life and sound both for me. They were a bit better on 4.3.
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Click to collapse
Try Franco kernel. Even the stock settings should give you far better results than you get with stock.

I just got mine a couple weeks ago and battery life has been real disappointing. I got down to 53% with only 2.5 hrs screen time earlier today. Mostly just browsing and maybe 10 minutes of light gaming. No wakelocks or anything. I've got it setup the exact same way as my N5 and my Moto X and I get stellar battery life out of both of them. I can more screen time on my Moto X than I do my N7 and that's downright sad.
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