Does anyone have tips for a longer charge?

Right now, I am simply locking the screen and keyboard using the lock slider. I know that the screen powers off and where it is locked, it shouldn't accidentally come back on while in the Nokia case in my bag.

Should I also turn off bluetooth and the wireless connection?
Should I set my Chat status to off?

Without doing this I have had mixed results. Once in a while, my charge will last a couple of days. Most of the time, it is drained of all charge 12 hours later.

Edit:

- If you have connections set to automatically connect and those connections are not available, it can drain your battery. If you know you will be leaving your access point's range, shut off your wifi so it wont keep searching.

- You should lock or put your tablet to sleep when not in use.

- If you use your phone's internet through tethering, shut it off when you are done. I assume when other devices are unpaired, the BT is still active on the 810.

- If you use the RSS reader, you may want to turn off automatic updates as it may poll for new updates even when you aren't connected to something with internet connectivity.

= If you use a media player that searches your storage for new media, make sure the app points to only the directories you plan for media to be placed. This way it doesn't scan through lots of folders and files it doesn't need to Or disable the metacrawl entirely.

= Disable any applets you don't use or need.

- Turn down the brightness to the lowest you are comfortable with.