[Nook Color General] LILLA45:
I am having a similar battery draining issue. I installed BBS (thanks for link), next I need to read up on how to use it.

In an attempt to minimize things that use the battery I have done this...

o I may experiment with this setting, but am probably more comfortable with using default here. I'm concerned that frequent connects/disconnects from the router might be problematic, especially if you do not have a static IP address assigned to your device in the router.

Settings > Wireless & Networks > Wi-Fi > Advanced. Keep Wi-Fi on during sleep: Only when plugged in (def=Always).

o Settings > Interface > Launcher. Homescreen. Disable Show Outlines. This has nothing to do with battery, but looks better to me.

o Settings > Interface > Lock screen. Screen Security. Disable Vibrate.

o Settings > Interface > Lock screen (or System). Clock widget. Disable Weather panel. Otherwise, since I keep location access off most of the time, weather is reported as a question mark which is ugly.

o Settings > Device > Sound. Disable these: Touch sounds, Screen lock sound, Volume Adj sound, Volume rocker music controls.

o Settings > Personal > Location access. Access to my location: Off. If I am going to run something that needs location, I will first temporarily turn this On.

o Settings > Personal > Language & input. Disable Google voice typing. Not needed since Nook Color doesn't have a microphone.

o Settings > Personal > Language & input. Voice Search: Disable all related items.

o Settings > Accounts > Email > Account settings > name@centurytel.net. Inbox check frequency: Everyday (vs.Every X min).

o Settings > Accounts > Google. Uncheck Sync for App Data, Browser, Calendar, Contacts, People - I don't use these. I left Sync for Drive checked.

Web history: Off; Personal results: Off

o Settings > Accounts > Outlook.com > Account setting. Sync settings. Enable push: Disable. Frequency: manually.

o I Disabled automatic updating for most Apps. To do this, open Play Store app. Click down arrow. Do the following for each app you want to change.

In left column, click on the app. In right column, uncheck "Allow automatic updating" box.

Tip. If you are in portrait mode, you need to switch to landscape mode, otherwise you will not see this box.

With the above settings I am getting about 10-13% battery drain per hour with some light usage.

During the following tests there was no user activity.

Test #1. Over a 12 hr period, with WiFi on, I lost about 9% drop in battery power.

Test #2. Over a 12 hr period, with WiFi off (vs turning Airport mode on), I lost about 4% in battery power.

Test #3. Over a 12 hr period, with Airport mode on (vs WiFi only off), I lost about 2% in battery power.

CONCLUSION 1: In the Guide linked below, I read that it is more affective to turn Airport mode on than to turn WiFi off, and Test #2 and Test #3 above definitely support this.

CONCLUSION 2: It appears that when WiFi is on, something is preventing my device from deep sleep. I am using BBS to try to understand/minimize/resolve this issue.

Tip. I am finding the following resource very helpful for working with BBS:

http://xdaforums.com/showthread.php?t=1827676

[GUIDE] The Total Newb's Guide to Wakelocks

A Comprehensive (but not by any means definitive) Guide to Wakelocks

Note/Lilla. Read posts 1,2,3 and 7.

Lilla