[Nook Color General] eltrkbrd:
Battery optimization on Nook Color

Thanks for sharing your battery saving tips; especially the link on the XDA Wakelock guide; I'm digging through it now!

I also have turned off "Location access". How did you set yours to "Enabled only when needed"?

Also how did you remove the google voice search / services?

Apparently there's no way to remove the Google search widget from the home screen without switching launchers. I would like to just disable the microphone icon / feature altogether but that doesn't seem like an option.

I went to settings > language & input > keyboard & input methods and disabled "google voice typing".

Then I went to Settings > Apps > All and scrolled down to "com.google.android.voicesearch". From there I tapped "Clear data" and then "disable".

I see what you mean by airplane mode; I tried that initially and figured I didn't need it after changing the advanced wifi sleep option but it seems most apps play nicer with it on regarding sync.

For example, BBS shows WeatherUpdateService (com.cyanogenmod.lockclock.clock) with a partial wakelock of over 1.5 hours (out of 9 hours)! Do you have that issue on your NC?

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These settings made a huge difference in battery drain during deep sleep on my NC:

Set Wi-Fi to automatically turn off during sleep:

Under Settings > Wi-Fi > Advanced -

Uncheck "network notification"

Set "Keep Wi-Fi on during sleep" to "only when plugged in"

Check "Wi-Fi optimization"

Change home screen clock widget update from 15 mins (default) to every 8 hours:

Under Settings > Lock screen (or System) > Clock widget > Weather panel -

Set "Update interval" to "8 hours"

Check "Use custom location" (I entered my City & State manually here)

Google Account sync set to manual:

Settings > Accounts > Google > Uncheck Sync for App Data, Browser, Calendar, Contacts, Gmail and People details (recheck & uncheck to manually sync from here).

Note: You can also sync Google services, such as contacts and calendars, in their own dedicated apps. You can also sync Gmail manually from your inbox by pressing "Menu", then "Refresh."

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Of course, screen brightness and processor utilization are two major factors.

Under Settings > Performance > Processor, I have Minimum CPU set for 300 MHz & Maximum CPU set for 800 MHz with "Set on boot" checked.

I'm still monitoring the battery drain; especially while awake as there appears to be something hogging my battery. I suspect WiFi and/or certain applications that I'm using over the LAN/WAN to be the cause.

Here are some Android Battery Saver Apps I found to aid with that:

Greenify -

http://xdaforums.com/showthread.php?t=2155737

https://play.google.com/store/apps/details?id=com.oasisfeng.greenify

Note: Greenify saves battery by reducing wakelocks and standby power usage. It hibernates apps that persistently run in the background; polling the Internet, pushing notifications, etc thereby preventing them from opening via wakelocks and alarms which task killers alone cannot.

Wake Lock Detector (simplified version of BBS) -

https://play.google.com/store/apps/details?id=com.uzumapps.wakelockdetector&hl=en

Deep Sleep Battery Saver -

http://xdaforums.com/showthread.php?t=2030696

One Power Guard -

http://xdaforums.com/showthread.php?t=1947559

Here are some useful guides in regards:

Supercharge Your Battery With Wakelock Detector

Ultimate guide on Android Battery Saving Methods

Android Wakelocks (wiki article)

Kind Regards,

Eltrkbrd