Hey Norm Welcome to Fchat and congrats on your first post. Head over the to model specific section and repost your question in the Boxer/TR/M section, that is where all the Testarossa questions are usually answered. The battery is located in the front luggage compartment on the passenger side and no different than most other car batteries. I would also suggest you introduce yourself and your car, the forum is very helpful and the members are very eager to help out a fellow owner. Cheers, Jeff