How to replace the battery on an Audi A6?

I noticed my Audi A6's battery is starting to weaken and I want to replace it myself. Can someone provide step-by-step instructions on how to do this?

First, locate the battery in your Audi A6, which is located in the trunk of the vehicle. Then, disconnect the negative terminal using a wrench to loosen the bolt. Next, disconnect the positive terminal in the same way. After that, remove the battery hold-down clamp and carefully lift the battery out of the car.