Several users have reported they use various techniques to maximize their Transformer Tablet and/or Keyboard Dock battery life. There also appears to be a way to extend battery life using Transformer applications (apps).
Please use this thread to discuss (only) apps for this purpose.
Once such app is: Auto Airplane Mode.
This app automatically enables airplane mode whenever the screen is turned off, and is therefore useful to save battery life when you are not using your Transformer.
The app can be downloaded from the Android Market here:
Please feel free to share your experience with this app and/or other apps you may know about.