Welcome to BBF and the 9800! You made a good choice.
Moved to the 9800 section.
Please read through this section and use the SEARCH
feature for most of your questions.
As for battery life, it really depends on how you use it. Since you didn't give any details, I can only guess. As with any smartphone, the more use, the less battery life you get. The more apps running in the background, the less battery life. This from our FAQ might help: Maximum Battery Life - BlackBerryFAQ