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  1. #26  

    Default Re: OMG. This thing has a battery that just won't quit!

    Quote Originally Posted by Diknak View Post
    I wonder if this is 4.3 that is doing this? I hope so because that means my N4 is going to get a nice boost.



    Well I think it may be a combination of both the snapdragon processor and 4.3 I have the new N7 and the 2012 N7, and after updating to 4.3 on the 2012 one, I am seeing a big bump in battery life! Although if you read some of the posts on these forums, some people say their battery life has diminished since they updated to 4.3......Go figure!

    Sent from my Nexus 7 using AC Forums mobile app

    Sent from my Nexus 7 using AC Forums mobile app
  2. #27  
    dhendriksen's Avatar
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    Default Re: OMG. This thing has a battery that just won't quit!

    I can tell you I agree that the battery is phenomenal. I bought mine last week on Tuesday, and used it until Thursday night without ever plugging it in. I charges it overnight and Thursday and have been using it ever since, and still have 43% battery remaining.

    I just checked, the screen has been on for almost 4 hours. LOVE the battery life.
  3. #28  

    Default Re: OMG. This thing has a battery that just won't quit!

    The battery on mine isn't terrible but it's not fantastic. No where near ad close to what Google days it can do. It'll drop 5% in six hours of non use and I'll get about 5-6 hours of screen on time if I use it heavily all at once. I'd say I can almost get that out of my HTC one and my iPad would be nearly double that! I see some who say their battery won't quit, like the op, and some that have the same as me.

    Posted via Android Central App
  4. #29  

    Default Re: OMG. This thing has a battery that just won't quit!

    Didn't really know what to expect battery-wise, but have basically transferred all activities except phone calls and texting from my gsm Galaxy Nexus to my N7. Was pretty much needing to charge my GNex around 4pm. Now my GNex still has around 70% at end of the day. N7 still had 63% Friday night, 52% Saturday night, and 39% last night.

    After a year and a half of the GNex, I'm having to force myself to NOT charge the N7 mid day to see just how much I can get out of the battery.

    Anyway, really happy with N7 battery so far.

    Posted via Android Central App
  5. #30  
    jddunkley's Avatar

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    Default Re: OMG. This thing has a battery that just won't quit!

    See screenshots below.

    Unplugged this morning fully charged. I've only checked a couple emails, updated an app and sent a couple messages and I'm down 5%... Why would Keep awake time be at almost the same as unplugged time??!!

    My downloaded apps are: Amazon, Angry Birds Original, Amazon AppStore, Google Authenticator, Bleacher Report Team Stream, Barcode Scanner, Battleship, Google Calendar, CapitalOne credit card app, Chrome, Circle Battery Widget, Cut the Rope Experiments, Dropbox, Google Earth, Facebook, Flipboard, Flixster, Flow, Fruit Ninja, Google Music, Google Voice, a few LDS church apps that don't run in the background, Hangouts, IMDB, Jetpack Joyride, LinkedIn, MightyText (recent, battery was problem before then), Netflix, Google Offers, Ringdroid, Smart app Protector (runs on my S4 and doesn't have a problem), Speed Test, Traveler by Flight Stats, Wells Fargo.
    Attached Thumbnails Attached Thumbnails OMG. This thing has a battery that just won't quit!-all-apps.jpg   OMG. This thing has a battery that just won't quit!-android-os-usage.jpg  
  6. #31  
    dhendriksen's Avatar
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    Default Re: OMG. This thing has a battery that just won't quit!

    My battery is now at 19 percent.

    It's been over 4 days and over 6 hours of the screen being on.

    That's awesome.
  7. #32  

    Default Re: OMG. This thing has a battery that just won't quit!

    Quote Originally Posted by kyoo View Post
    bad ***, cant wait to get mine
    You can say bad "a s s" on here. Phil and Jerry cuss from time to time.
    Last edited by hodan; 08-05-2013 at 09:09 PM. Reason: trying to swear properly
    So long, and thanks for all the fish.
  8. Thread Author  Thread Author    #33  

    Default Re: OMG. This thing has a battery that just won't quit!

    !!!Dude (jddunkley)

    Look at that Android OS percentage. and your keep awake time!
    As a comparison, my screen has been on 3 hours, but the keep awake time ius only 6 minutes.

    one of your apps has keep awake permission and is abusing it.

    Just because I saw this in a differentforum: you might want to remove any battery monitoiring apps. Believe it or not they can be your primary battery burner.
  9. #34  

    Default Re: OMG. This thing has a battery that just won't quit!

    Unfortunately, I was coming here to see if anyone else's battery was as bad as mine is.

    I downloaded task killer, because backing out of apps doesn't close them. I played Candy Crush once, had to take a phone call, pressed the home key, forgot about it. Came back in 4 hours, decided I wanted to play again, and it was still going!

    Not just the apps thing, my battery life is awful. Like, I get 8 hours tops out of it, with 3 hours of screen time. I downloaded Puzzle Quest, Dungeon Hunter, Outlook, Kindle, Acrobat Reader, Facebook, BS Player, Solitare, Majong, Lottery Results, Swiftkey, Advanced Task Killer, and Candy Crush.

    I disabled all push notifications from games and facebook, and email. Dungeon Hunter had a push notifier in there, I disabled that too.

    I set brightness at 60-70%. I have let it go to red, and charged it to full 7 times now. It is not improving.

    Any ideas?
  10. #35  
    Darth Spock's Avatar

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    Default Re: OMG. This thing has a battery that just won't quit!

    Quote Originally Posted by slave View Post
    I set brightness at 60-70%. I have let it go to red, and charged it to full 7 times now. It is not improving.

    Any ideas?
    Not really sure, I'm getting 2-4 days out of mine with 8-11 hours of screen on. It is a good idea to not let the thing die, or even come close to dying battery-wise. These batteries like to be topped off as much as possible. From what you posted I only have two recommendations.

    1. Get rid of the task killer. You don't want apps to close necessarily, but if they need to for resource management, the tablet will do that automatically. It's worse on the system for you to be force stopping apps than to let it handle resources dynamically. Especially with 4.3, this thing is a beast at self management.

    2. Unless needed for visibility, I'd consider turning the brightness down substantially. For most people, the screen will be the biggest power consumer, and so it seems to reason that the more you minimize it's power draw, the longer life you'll see overall.

    ​Obvious statement: Why, I am an assassin 'droid, Master.
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    coronaboy10 likes this.
  11. #36  

    Default Re: OMG. This thing has a battery that just won't quit!

    Quote Originally Posted by slave View Post
    I played Candy Crush once, had to take a phone call, pressed the home key, forgot about it. Came back in 4 hours, decided I wanted to play again, and it was still going!
    You need to understand that when that happens, it is not like it is on Windows when you minimize applications. When an app loses focus, it freezes it in memory so when that happened with Candy Crush, it was NOT consuming CPU cycles, so it was frozen in your RAM and was not bringing down your battery. You do not need a task killer in Android anymore because the OS will manage your memory for you.


    If your task killer is automatically killing aps, it is actually draining your battery more than it is if apps are frozen in your RAM. If you really want to close an app, use the recent apps menu and swype them away. Prior to 4.3, this didn't actually close them but now it does.
    coronaboy10 likes this.
  12. #37  

    Default Re: OMG. This thing has a battery that just won't quit!

    Okay, I will do this, any other ideas? I love this tablet. My wife's Nexus (we both at the same time), it has RIDICULOUS battery life.
  13. Thread Author  Thread Author    #38  

    Default Re: OMG. This thing has a battery that just won't quit!

    Quote Originally Posted by slave View Post
    Okay, I will do this, any other ideas? I love this tablet. My wife's Nexus (we both at the same time), it has RIDICULOUS battery life.
    Perfect! You have something to compare against. Get rid of all your easy-to-reinstall apps and make your system like hers. Then watch your usage. Still having a problem...then one of the apps you couldn't part with is ruining your experience/battery.
  14. #39  
    xweb10's Avatar

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    Default Re: OMG. This thing has a battery that just won't quit!

    8 hours of screen on time!? Is this for real? I got 3 hours once, but never again. I usually use medium brightness setting. Do you users with 5 + hours of screen on time also have any email accounts, calendars, contacts syncing? I have mainly been laying Candy Crush (I know, I'll get over it) and lite web browsing.
  15. #40  
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    Default Re: OMG. This thing has a battery that just won't quit!

    Quote Originally Posted by xweb10 View Post
    8 hours of screen on time!? Is this for real? I got 3 hours once, but never again. I usually use medium brightness setting. Do you users with 5 + hours of screen on time also have any email accounts, calendars, contacts syncing? I have mainly been laying Candy Crush (I know, I'll get over it) and lite web browsing.
    We are talking the 2013 version, right? I'm at a little over 3 days off the charger with 6 hours on screen so far, at 30%.

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  16. #41  
    xweb10's Avatar

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    Default Re: OMG. This thing has a battery that just won't quit!

    Yes. 2013. How can I test if my battery is a dud?
  17. #42  

    Default Re: OMG. This thing has a battery that just won't quit!

    Quote Originally Posted by Diknak View Post
    You need to understand that when that happens, it is not like it is on Windows when you minimize applications. When an app loses focus, it freezes it in memory so when that happened with Candy Crush, it was NOT consuming CPU cycles, so it was frozen in your RAM and was not bringing down your battery. You do not need a task killer in Android anymore because the OS will manage your memory for you.


    If your task killer is automatically killing aps, it is actually draining your battery more than it is if apps are frozen in your RAM. If you really want to close an app, use the recent apps menu and swype them away. Prior to 4.3, this didn't actually close them but now it does.
    it costs power to keep data cycled in memory, much more power than closing something and keeping in memory only as necessary. it doesn't take a whole lot of power to transfer data from storage to memory.

    think of it this way, you have 1GB of apps loaded into memory, which takes about 20 seconds to load at maximum read speed. then that 1GB of memory will continue to be refreshed so that the data stays in it. that's a lot less of a power drain, than say, having that same 1GB of data refreshed into memory for hours and hours on end. background apps eat as much memory power as foreground apps. minus the power usage from being handed off to the processor/gpu. so background apps do eat a significant enough amount of power. I'd say it's at least possible for them to eat 10% or more out of battery life.

    go ahead, test it out. fill up your memory with as many open apps as possible, then using only one lite foreground app. the first thing you'll notice is there's warmth coming from the back near the cameras, even if you're not doing anything. this is because more data in memory = more power usage. it costs more power to hold 2GB of data in RAM than just 1GB for example. this heat is a byproduct of the energy being expended.

    of course, the screen is still going to eat about half of all power no matter what, but there are definitely significant enough energy savings in keeping memory clean. it may possibly mean as much as an hour extra of charge.
  18. #43  
    Darth Spock's Avatar

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    Default Re: OMG. This thing has a battery that just won't quit!

    Nexus 7 '13 comes comes off charger at 10:00, at 05:30 pick it up, it's at 99%. I didn't ask it how many apps were in the background.

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  19. #44  

    Default Re: OMG. This thing has a battery that just won't quit!

    Quote Originally Posted by slave View Post
    I set brightness at 60-70%. I have let it go to red, and charged it to full 7 times now. It is not improving.

    Any ideas?
    Wow that is really bright. Are you using it outside? Set the brightness to Auto and see if that impacts your battery life.

    FWIW, mine will last days on a charge. I mostly do email and watch videos. I have the standard background, not one of the animated ones that can use power.
  20. #45  
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    Default Re: OMG. This thing has a battery that just won't quit!

    Also, it's not a great idea of to let these batteries fully drain.

    Sent from my Nexus 7 using Tapatalk 4

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  21. #46  

    Default Re: OMG. This thing has a battery that just won't quit!

    Why have a brightness toggle on these android devices? I mean really. My S1m S2m S3, Evo, Galaxy Tab 2, and now this Nexus. What's the point. If you turn it up so you can see it, your battery dies. Why not just lock it at super dim and remove the illusion of choice?

    BTW, the battery still sucks. I set it at 50% brightness. I am only getting 2-3 hours of screen time.
  22. #47  
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    Default Re: OMG. This thing has a battery that just won't quit!

    Quote Originally Posted by slave View Post
    BTW, the battery still sucks. I set it at 50% brightness. I am only getting 2-3 hours of screen time.
    Not sure why yours is so different, but might be worth a warranty replacement if you're getting less than a third of normal battery life.

    Sent from my Nexus 7 using Tapatalk 4

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  23. #48  
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    Default Re: OMG. This thing has a battery that just won't quit!

    If we purchased from Amazon, who do we contact for warranty support? Asus? Or can I go to Amazon.
    Last edited by xweb10; 08-13-2013 at 11:44 AM. Reason: change from Play Store to amazon
  24. #49  

    Default Re: OMG. This thing has a battery that just won't quit!

    Quote Originally Posted by slave View Post
    BTW, the battery still sucks. I set it at 50% brightness. I am only getting 2-3 hours of screen time.
    I'd return or get replaced under warranty, the first day I got mine I had the screen at 50% and used it for six hours straight at the library, setting up apps, browsing the web, visiting forums and the like.

    Since then, I've used it even longer, though I am keeping the screen more like 25% now, 50% made my eyes too tired. I think the battery life has been amazing.

    Sent from my Nexus 7 (2013)
  25. #50  
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    Default Re: OMG. This thing has a battery that just won't quit!

    I was using the SeriusXM music app on Saturday in my garage. I listened to music through the external speakers with the volume at ~75% maximum for 6-7 hours and the battery was at 84% capacity when I was done. So it was sipping on WiFi data to deliver the music and playing it through the speakers and it barely dented the battery. At that pace, I suppose it could play music for close to 40 hours. Very impressive!
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