Here is the replacement for my Porsche GT4 Battery. This process is the same for any Porsche as well.

The Battery I used to save some money and not pay the additional cost for a true Porsche battery was a 000915105DE VW branded battery. Same battery as Porsche just less money.

Also since it was a VW battery the full S/N doesn't fit into the input box. I put in as many characters as I could. I believe its just for checking and doesn't actually do anything for battery maintaining. Its more due to what type the battery is and the capacity of the battery.