The multimodal nature of the tablet may contribute to a greater level of use of resources as there is no division between note-taking, accessing internet resources, using productivity tools, and using educational software.
Here is another setting change you can make in OneNote 2007. Tools>Options>Other>Battery Options and you can select a number of different levels from maximum performance to maximum battery life.
Try drawing with SuperDoodle! Kerpoof is testing a new activity! You can be the artist in Super Doodle. Paint, choose and mix colors and more. Play in Super Doodle