:xoutpost:
You can use a group 49 from many different mfg's. Get one with a vent tube. Check your local Batteries Plus store, Autozone, etc. Use the search button above to find some great tips about battery replacement in your X5. Also, check out the article on the home page:
http://www.xoutpost.com/articles/x5/g...ernatives.html
Again, welcome to X5 world.