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Frequent Contributor
mitch520
Posts: 28
Registered: ‎06-04-2010
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Battery Life

I only got about 5-6 hours out of the battery, just reading books, WI-FI off, power save on, brightness about half way, any other suggestions.

 

Thanks

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kamas716
Posts: 1,509
Registered: ‎09-28-2011
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Re: Battery Life

Is it brand new?  I've noticed that it sometimes take few cycles for it to calibrate (NST for me and NT for my wife).

http://www.goodreads.com/kamas716
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mitch520
Posts: 28
Registered: ‎06-04-2010
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Re: Battery Life

I have it about 2 weeks, charged it about 2 or 3 times.

 

Thanks

Bibliophile
laurieb52
Posts: 1,146
Registered: ‎12-13-2009
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Re: Battery Life

[ Edited ]
The advertised battery life is with wi- fi off; if you keep wi- fi on, it is significantly reduced. Also, check your email settings; if yours is set to check email every half hour or so, it appears wi-fi gets turned on, even if you had it turned off. Also, my battery life improved after downloading the 1.4.1 update.
Life's a chair of bowlies...and it's all about Plan B!
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mitch520
Posts: 28
Registered: ‎06-04-2010
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Re: Battery Life

Wi-Fi is off and don't have an e-mail account set up.

Inspired Contributor
blueyedirishgrl
Posts: 90
Registered: ‎10-26-2009
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Re: Battery Life

My battery life is horrible.  I too only use it for reading, wifi is always off & I have power save on & screen dimmed.  It has only gotten progressively worse and now have to charge mine about every 24hrs.  It drains significantly even when its asleep.  The longer I have my NT, the more I wish I'd kept my NC.

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SamSpade88
Posts: 103
Registered: ‎11-21-2011
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Re: Battery Life

To the OP and others suffering excessive battery drain. There are a few other threads on the topic and with wifi off and screen brightness low there are just a few things left that could cause this:

 

1) Background applications that are still running like QuickOffice Pro or a sideloading PDF file. A SD card installed is not part of the excessive drain thoughts as some have suggested. I have a 32gb card and it caused no difference.

2) Defective battery - nothing more really to say about this except for what I mention below.

 

For #1, it has been suggested (successfully) to either do a soft reset at first and then a hard reset. Either one should/will stop your background apps. No telling if they will start right back up again especially if they were configured to do something when restarted.  Out of the box, all should be good and you should get anywhere from 8-11 hrs of quality time using your NT with wifi off and screen brightness low just doing some reading activity.

 

#2 is cause for replacement. I've seen a few posts where this happened and you really can't tell if your battery is defective if your battery drain is close to the low point of the average. These lithium batteries are not recommended to fully drain to zero so you might be able to gauge the battery capabilities if you turn your NT completely OFF for the night and check percentage the next day. Mine does not drain more than 1-2% and this is for about 8 hrs or so.

 

I am sure there could be some other influential functions causing the excessive drain however you have to start somewhere and while #1 is fairly easy to troubleshoot, #2 should be figured out right away while under the 30 day replacement policy. Just some suggestions. :smileyhappy:

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mitch520
Posts: 28
Registered: ‎06-04-2010
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Re: Battery Life

To get 8 to10 hours of battery, does that mean you have to turn the NT off every time your done with it ?  I let it go to sleep mode, when I had the first edition nook that is all I did and got 8-10 hours.

 

Thanks

DeanGibson
Posts: 2,221
Topics: 93
Kudos: 2,273
Solutions: 18
Registered: ‎04-12-2011

Re: Battery Life

With some† exceptions, applications do not run in the background on Nooks (that's why you don't have multiple windows viewable at the same time).

 

†— Exceptions (this list is not all-inclusive):

 

  1. WiFi runs in the background.
  2. If you have set up your eMail app to check messages, that runs in the background.
  3. If you have the browser open to a web page, some web pages are dynamic, meaning they run while displaying.  They're not supposed to run when the web page is not being displayed, but ...
  4. A few system apps run in the background, like to check for updates & new downloads on the B&N site.

Generally, a document-displaying app does not run in the background (there is no reason to).

 

I would check items #1 – #3 as a first step, and then reboot your fully charged Nook and then don't run anything after rebooting.  Let it sit overnight, and see how much it drops.  If that only drops a little, then by the process of elimination, try to figure out what is draining the battery.

 

Nooks: 2 Touch (one Ltd. Ed.): B&N 1.2.1 rooted; 1stEd/3G: B&N 1.7.0 rooted;
    2 HD+/16GB: B&N 2.2.0 (Android 4.0.4) rooted
Dell Venue 8 Pro: Windows 8.1; Samsung Galaxy Tab2 7.0": Android 4.2.2 rooted
LG G3 & G Pad 8.3 Android 4.4.2 rooted; Acer Iconia A500: Android 4.0.3 rooted
Never suspect intent where incompetence will do.
Customer loyalty is earned, not commanded or deserved, and easily lost.
Distinguished Bibliophile
bobstro
Posts: 4,062
Registered: ‎01-01-2012

Re: Battery Life

Live wallpapers can really suck down battery as well.

DeanGibson
Posts: 2,221
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Solutions: 18
Registered: ‎04-12-2011
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Re: Battery Life


bobstro wrote:

Live wallpapers can really suck down battery as well.


Good addition to the list;  thanks!

Nooks: 2 Touch (one Ltd. Ed.): B&N 1.2.1 rooted; 1stEd/3G: B&N 1.7.0 rooted;
    2 HD+/16GB: B&N 2.2.0 (Android 4.0.4) rooted
Dell Venue 8 Pro: Windows 8.1; Samsung Galaxy Tab2 7.0": Android 4.2.2 rooted
LG G3 & G Pad 8.3 Android 4.4.2 rooted; Acer Iconia A500: Android 4.0.3 rooted
Never suspect intent where incompetence will do.
Customer loyalty is earned, not commanded or deserved, and easily lost.
Frequent Contributor
mitch520
Posts: 28
Registered: ‎06-04-2010
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Re: Battery Life

I turned it off and 7-8 hours later it had the same percent.

Distinguished Bibliophile
bobstro
Posts: 4,062
Registered: ‎01-01-2012
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Re: Battery Life


mitch520 wrote:

I turned it off and 7-8 hours later it had the same percent.


Do you mean it had the same percentage of battery remaining (good), or the percentage of battery consumption during that period was unchanged (bad)?

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SamSpade88
Posts: 103
Registered: ‎11-21-2011
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Re: Battery Life

@mitch520:  You have pretty much ruled out that the battery is defective and you can focus on things causing the drain. There are a lot of things to look at from the posts above. When I had my Palm T|X I had an app that listed all the running functions and their battery drain. It was created exactly for this sort of purpose.

 

Any Developer out there who can create one for the NT?

DeanGibson
Posts: 2,221
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Registered: ‎04-12-2011
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Re: Battery Life


SamSpade88 wrote: ... Any Developer out there who can create one for the NT?

You mean, like http://forum.xda-developers.com/showthread.php?t=1400615 ???

Nooks: 2 Touch (one Ltd. Ed.): B&N 1.2.1 rooted; 1stEd/3G: B&N 1.7.0 rooted;
    2 HD+/16GB: B&N 2.2.0 (Android 4.0.4) rooted
Dell Venue 8 Pro: Windows 8.1; Samsung Galaxy Tab2 7.0": Android 4.2.2 rooted
LG G3 & G Pad 8.3 Android 4.4.2 rooted; Acer Iconia A500: Android 4.0.3 rooted
Never suspect intent where incompetence will do.
Customer loyalty is earned, not commanded or deserved, and easily lost.
Correspondent
SamSpade88
Posts: 103
Registered: ‎11-21-2011
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Re: Battery Life

Probably more like this:

 

Controlling your CPU and Battery Life (CPU Tuner)

CPU Tuner lets you control how your processor is used, with profiles (different CPU operational limits) assigned to various triggers (different battery charge levels), so you can balance performance with battery life. Once you overclock (further down) you'll use this to set your new limits.  With CM7 this is not required, you can set the CPU limits in the Settings > CyanogenMod 7 Settings.  But, it's a good app and you may wish to try it.

Market: CPU Tuner

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bobstro
Posts: 4,062
Registered: ‎01-01-2012
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Re: Battery Life

I was under the impression that Mitch520 (the OP) has not rooted hisdevice and is still on B&N stock firmware. Unfortunately, that limits his troubleshooting options.