Database Users

Nexus 7 Battery Life

Hi! I recently got a Nexus 7 and I am somewhat disappointed in the battery life. I am only getting around 3 hrs of battery life and is draining quickly while idle. The battery is also draining while being used while connected to my pc. I am using Jellybro rom along with Trinity Alpha 64. Can anyone recommend the best Rom/Kernel combination for battery life ? I read that Trinity is great for battery life so I'm doubting the Rom (however it works great on my Galaxy Nexus). As I dont always use the same things on my tablet I cant really test the different roms myself.
Thanks
Sent from my Galaxy Nexus using Tapatalk 2

I'm getting great battery life on my stock N7 :|
I tried it the other day, used it all day and it died after around 8-9hrs. Was tethering via bluetooth, brightness set to auto, and either played games, used FB messenger, or read Wall St Journal frequently throughout the day.
Sync and location enabled.
Oh and the N7 will probably discharge faster than your PC can charge it. Typical USB ports on a PC only output .5A of power. Chargers meant for tablets usually provide about 2A of power. So thats another issue.
Might I suggest running the N7 till it shuts itself off due to no battery, then letting it sit and charge overnight till its 100%?
Sent from my Nexus 7 using xda app-developers app

Thanks for the reply Can you please tell me the Screen on time ? Since then I switched to Paranoid Android so I'll how it goes but maybe the stock rom has a better battery life ?
Thanks
Sent from my Galaxy Nexus using Tapatalk 2

Last night I got 19.5 hours on battery with 7.5 hours screen time on paranoid android. I'd say its safe to say that...
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Hmm sadly I didnt take a screenshot when I did that 8-9hr run.
I'll unplug my tablet for today though and by tonight maybe I'll have some interesting results for ya.
Sent from my Nexus 7 using xda app-developers app

If its enough to make you mad then its prolly not right.
To say your doing in wrong would be a far shot but your tablet is definitely doing it wrong..lol. I was just saying the other night to my girl that I was super happy with the battery because it lasts all day for me. From 7am in the morning till 12 at night. Of course im not using it every waking moment but I do check it/use it as much as I would have normally used my phone. During work I am on wifi till about 430 and then from 430-8/9 while im in class im tethering using it almost the whole time, then when im home for the rest of the night I will be on wifi. The things I do vary from webbrowsing (reddit, xda, etc) emailing attachments, listening to google music and GPS/texting. (yes I use tablet talk which is why I rarely use my phone anymore except to setup tethering)
If you are having any issues with your battery I recommend to get a battery app to reset the stats and try again. If not return to stock then try that method again.. then if NOT return.

revamper said:
Last night I got 19.5 hours on battery with 7.5 hours screen time on paranoid android. I'd say its safe to say that...
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Click to collapse
Haha Thanks for the replies I'll see how it goes with Paranoid Android
Sent from my Galaxy Nexus using Tapatalk 2

modstorm said:
Haha Thanks for the replies I'll see how it goes with Paranoid Android
Sent from my Galaxy Nexus using Tapatalk 2
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Click to collapse
Just turn off your google account auto-sync and your battery life should increase dramatically. I use the power widget to toggle sync.

Okay here are some screenshots of my battery life... Not sure if its uploading properly though since im doing this through the app.....
EDIT: Looks like it didnt work... But basically I had about 20.5hrs of total battery time. Screen on for a total of 5.5hrs. Bluetooth on the entire time, WiFi on for about 6 hours.
Sent from my Nexus 7 using xda app-developers app

Nippero said:
I'm getting great battery life on my stock N7 :|
Oh and the N7 will probably discharge faster than your PC can charge it. Typical USB ports on a PC only output .5A of power. Chargers meant for tablets usually provide about 2A of power. So thats another issue.
Click to expand...
Click to collapse
My N7 discharges faster than the google provided AC mains charger can recharge it. That seems pretty pathetic to me. How is it for others?

Battery lies.

OK so I have had this phone two days now and noticed an oddity. I had about 43% battle according to the phone. I rebooted and then jumped down to 20% or so. Anyone else see this.
Sent from my XT907 using xda premium

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Note screenshot
Sent from my XT907 using xda premium

I've noticed some smaller discrepancies, like 5-7% or so, but nothing like what you're seeing.

cosmic06 said:
View attachment 1361810
Note screenshot
Sent from my XT907 using xda premium
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Dude you either have a serious wake lock problem or you were streaming music that entire time.
-Sent from my Razr M.-

No clue. Last few days it was fine 12 hours of use and like 50% battery. Today I did nothing different. No streaming music but a bit more texting.
Sent from my XT907 using xda premium

Ever since reboot it is fine. What could have caused it to stay awake.
Sent from my XT907 using xda premium

I think all Android users faced some issues with battery status..
Ex. When the phone charged 80% if restart it the battery might decrease by 5% each time... while when it's less than 10% each time the battery decrease from 1-2% max ! ... that's really not reasonable
In addition, when i charge my phone 8 hour the battery would stay 17 hour.. while if i change it until it's got 100% charged "according to battery status" it wouldn't stay on more than 10 hours!!! Wipping battery and other solutions also didn't help by the way !!!!
Sent from my GT-I9003 using Tapatalk 2

Use smart actions battery saver mode whole day that is what I do and get about 16 hours of battery on medium usage.
Sent from my Galaxy Nexus using xda app-developers app

melo563 said:
Use smart actions battery saver mode whole day that is what I do and get about 16 hours of battery on medium usage.
Sent from my Galaxy Nexus using xda app-developers app
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I will try that

I had a similar problem and never solved it. My battery typically lasts 32 hours new. After a few weeks it went to 16. Frustrated I let it "die" to find that it actually continued to run for 16 additional hours literally at 0%.
Unplugging the battery fixed it for that current charge cycle but upon recharging it went back to its old ways.
I eventually went through the trouble to purchase an OEM replacement and further open up my Razr M to replace. Things were great for another couple of weeks until the same exact problem happened again.
Frustrated I go back and forth between my Inc 4g and my Razr M depending on if I need a reliable battery read (traveling, etc). I like the Razr M so much I might just buy another and hope it doesn't crap out like this one, but then again there is probably a new season of Droid devices coming in a few months.

sototallycarl said:
I had a similar problem and never solved it. My battery typically lasts 32 hours new. After a few weeks it went to 16. Frustrated I let it "die" to find that it actually continued to run for 16 additional hours literally at 0%.
Unplugging the battery fixed it for that current charge cycle but upon recharging it went back to its old ways.
I eventually went through the trouble to purchase an OEM replacement and further open up my Razr M to replace. Things were great for another couple of weeks until the same exact problem happened again.
Frustrated I go back and forth between my Inc 4g and my Razr M depending on if I need a reliable battery read (traveling, etc). I like the Razr M so much I might just buy another and hope it doesn't crap out like this one, but then again there is probably a new season of Droid devices coming in a few months.
Click to expand...
Click to collapse
have you tried one of those battery calibration apps? they require root though.
as for me, my battery yesterday showed 34% while in the system. but then when I booted in TWRP recovery, it said my battery was at 22%.

Can't you wipe battery stats in cwm too? That could help...
Sent from my Nexus 7 using Tapatalk HD

[Q] Charger got wet

Hello, My original LG wall adapter got wet, i wiped away all the water i could, and let it dry out for day.
After that I plugged my N4 into it, and my battery just jumped from 70% to 100% in a blink. I unplugged it imminently, and phone thought it was still charging for like 10 seconds, and then my battery percentage went back to 70%.
It's been a few days since this event. I'm worrying about whatever damage it might have caused.
Battery life isn't great. i get about 1.5 SOT when I hit 40%. standby time are as the used to be, but when using the phone the battery seems to drain more. (WIFI OFF WHEN NOT AT HOME ,ALL GOOGLE LOCATION SERVICES DISABLED, ON 3G 24/7)
Is there any real test to see if there is really any damage ?
I hope I'm just imagining. Maybe the charger didn't went bad at all? after all is it a known bug when nexus jumps to 100%.
The wet adapter charged my Other galaxy S2 just fine..

Here is some ridiculous screen.barely 10 minutes screen on an a short phone call and its already down 5%
https://docs.google.com/file/d/0B4w595gkqV6AZDA5d3FaQ2dvVzQ/edit?usp=sharing
Sent from my Nexus 4 using xda app-developers app

5% down, in 1 hr and 15 minutes, with 10~ minutes of screen on time, and some phone calls is not really that bad imho.
You should probably get a new charger, seems like something is messed up within the charger, due to being exposed to water.

Is there any way to determine if the phone itself received damage ? I's there any chance at all ?
Only the plastic of the charger was exposed to water ..
anyway I'm using apple Iphone adapter since then.

I think the best way to tell if it received any damage is to just use it normally.
Charge it normally, through the iphone adapter for now, and see if the problem re-occurs.

I do notice battery drains quicker , My friend's nexus, which was from an older batch, drained 2% after 10 mins in google chrome, auto brightness.
mine drains 8% , same brightness, no application running in background. betterbatterystats shows nothing unusual.

Is this normal? Totally Moderate use.
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Sent from my Nexus 4 using xda app-developers app

michel9501 said:
Is this normal? Totally Moderate use.View attachment 1919358
View attachment 1919358
Sent from my Nexus 4 using xda app-developers app
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Voice calls and Antutu is light use? Plus being on data?
Sent from my Nexus 4

Antutu only took 2%, and yeah data and voice calls are normal use.what's the point in having a smartphone If you can't have access to the internet or make calls?
Sent from my Nexus 4 using xda app-developers app

Some another shots :

michel9501 said:
Some another shots :
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That looks pretty on par with what I would have expected for me...

I think you're overreacting. Get a new charger, and charge through USB or whatever for now. If you're super paranoid, then flash a fresh ROM with data wiped and your battery should be pretty good..

Your battery is fine.
Sent from my Nexus 4 using Tapatalk 2

joshnichols189 said:
Your battery is fine.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Alright ,Final screen :

michel9501 said:
Alright ,Final screen :
Click to expand...
Click to collapse
Your battery life seems fine..

michel9501 said:
Here is some ridiculous screen.barely 10 minutes screen on an a short phone call and its already down 5%
https://docs.google.com/file/d/0B4w595gkqV6AZDA5d3FaQ2dvVzQ/edit?usp=sharing
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
that's normal usage on 3G

seems like the screen is on A LOT so I do not see a problem =)

michel9501 said:
Antutu only took 2%, and yeah data and voice calls are normal use.what's the point in having a smartphone If you can't have access to the internet or make calls?
Sent from my Nexus 4 using xda app-developers app
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Click to collapse
Yes it's normal and depends on screen brightness.
and by the way the voice calls that you have made seem to take a large percentage
:cyclops:

If you're not happy with your battery life give Franco's kernel a try.

Mrboxfacetramp13 said:
Yes it's normal and depends on screen brightness.
and by the way the voice calls that you have made seem to take a large percentage
:cyclops:
Click to expand...
Click to collapse
And there is no way the damaged charger ****ed up my battery?

Battery life

So here we go again a new flagship and a lot of reviews said the phone had an impressive battery life. What is your experience? Post bbs or screenshots

I got the phone yesterday, trying to test it out myself today and get results!!!

First full charge is encouraging.
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Sent from my SM-G900F using Tapatalk

I'm getting drain from android os and android system, since I'm not rooted I can't pin point what's causing it.

uptill now i find the battery is not so good.... g900W8

ysr84 said:
uptill now i find the battery is not so good.... g900W8
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Wait till two to three charge cycles are complete. The battery life normally increases.

How much time it is taking to fully charge
Sent from my SM-G900H using xda app-developers app

More screenshots guys. Keep them coming

SM-G900A -- AT&T US model:

karmuh said:
SM-G900A -- AT&T US model:
Click to expand...
Click to collapse
What kind of usage was this? Mainly browsing? Videos? LTE or Wifi?
Sent from my SGH-I337M using Tapatalk

msavic6 said:
What kind of usage was this? Mainly browsing? Videos? LTE or Wifi?
Sent from my SGH-I337M using Tapatalk
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Almost all on WiFi -- browsing, installing and setting up a bunch of apps, listening to music/podcasts for roughly an hour or so, texting, phone talk time around 20-30mins...things of that sort.

karmuh said:
Almost all on WiFi -- browsing, installing and setting up a bunch of apps, listening to music/podcasts for roughly an hour or so, texting, phone talk time around 20-30mins...things of that sort.
Click to expand...
Click to collapse
Pretty impressive for one of the initial charges of the device and this type of usage.
Sent from my SGH-I337M using Tapatalk

Is it snapdragon version or octacore version
Sent from my SM-G900H using xda app-developers app

msavic6 said:
Pretty impressive for one of the initial charges of the device and this type of usage.
Sent from my SGH-I337M using Tapatalk
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Definitely! I was impressed myself, especially since I came from an iPhone that had a depressing 1400mAh battery. In the time it took for one full discharge on my S5, I would have needed to do 1.5-2 charges on my iPhone :laugh:
sandeep20064096 said:
Is it snapdragon version or octacore version
Sent from my SM-G900H using xda app-developers app
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Click to collapse
Mine? Snapdragon SM-G900A

How is the battery back up guys for exynous version mine is not gud
Sent from my SM-G900H using xda app-developers app

Much better than my GS3. 30% at least.
And Charges about twice as fast.
Not kidding.

Which one do you have snapdragon version of exynous version.and how much time its taking to fully charge
Sent from my SM-G900H using xda app-developers app

Getting outstanding battery life on my g900a. Once someone figures out root for it and i get greenify working properly it should be even better.

Siting at 8H 25M 11S on Battery. AT&T S5. The thing that is killing my battery the most, Gear Fit Manager at a19% then Android at 16% and Screen at 14%. I have only charged 2 times so far since I bought the phone on Sunday, Ran it down to 9-10% yesterday but it took forever to charge. In over two hours of charge time it went from 10% to 37%. My iPhone 5 would have been 100% or close to it. Never had android phone before (really enjoying it) so not sure if this is normal or it will get faster the more charging cycles.
Thanks

[Q] Samsung Galaxy App drained battery?

I had I think about 80% Battery last night and went to sleep. Normally I only get about 5% to 10% drain when I sleep from notifications and things syncing which I am fine with. However I woke up and it was at 20%. I went into the battery settings to see what was draining it and it said Samsung Galaxy 40% stay awake for 5h 37m. and recieved data 130 mb and sent 4.52 mb which I have never seen that come up on the list of things using my battery before, and why would 130mb take 5 hours to recieve. I am attaching a picture as well of my screenshot. I am totally confused. There was no update on my phone ota either. I was on wifi the whole time since I was home.

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Sorry forgot screenshot. Lol.

Have you tried freezing it?
Sent from my Galaxy Note S5

dangerousjenny said:
I had I think about 80% Battery last night and went to sleep. Normally I only get about 5% to 10% drain when I sleep from notifications and things syncing which I am fine with. However I woke up and it was at 20%. I went into the battery settings to see what was draining it and it said Samsung Galaxy 40% stay awake for 5h 37m. and recieved data 130 mb and sent 4.52 mb which I have never seen that come up on the list of things using my battery before, and why would 130mb take 5 hours to recieve. I am attaching a picture as well of my screenshot. I am totally confused. There was no update on my phone ota either. I was on wifi the whole time since I was home.
Click to expand...
Click to collapse
Are you using the original battery that came stock with the phone or using a different battery? May be the issue here...

I am not rooted and I am trying to figure out what that is all it says is Samsung galaxy. This is the first time it has shown up on my battery stats.
Yes it is the orginal baettery. I bought it 17 days ago.
Sent from my SM-G900V using XDA Free mobile app

Also this is the first time anything has drained my battery like that on this. I had an s4 before this one and never had this happen. Almost all same apps. Only added a few calender ones the days before this happened but they aren't even showing on battery use.
Sent from my Galaxy S5 using XDA Free mobile app

Well its showing up again. By this time tonight usually I have 75% battery life. Today it's at 63% doing the usual stuff with Samsung Galaxy using 10%. I really don't want to have to reset but this is becoming a problem.
Sent from my SM-G900V using XDA Free mobile app

Seriously does anyone know what this app is and if it's OK to turn off. I really need to know what's going on and it's hard to Google cause it comes up with every page that says Samsung Galaxy.
sent from my Samsung Galaxy S5

I froze that app and 120+ other random things I don't want. :good:
edit to add this app is Social Networking Service so all that background happenings is from facebook, etc.

If it is connected to Facebook why would it be showing up now? It's not interfering with my Facebook since I turned it off and I never have had anything with Facebook drain my battery like that. I am glad I haven't seen anything not work on my phone since I turned it off but I was still having some sudden battery drain all of a sudden. I am really confused. This never happened on my s4 and I have had this one over two weeks and it just started happening. I am not using the phone any differently.
sent from my Samsung Galaxy S5