Replaced my own battery, but I kept the vehicle powered by using a portable jumpstart battery hooked up to keep the electronics from resetting.

 

I have an xs power battery and love it. I also have a intelli charger maintaining the car. Xs power has been great

 

Try VW/Audi , the part number is 000915105CE
Good luck gents
I've called a few dealers and it has been running around $220-230 for the battery . I'm located in Baltimore
Annapolis quoted $566 for the battery $820 approx out the door
Rockville quoted $400 out the door,they are using an interstate battery?