I have an update on the Scuderia battery issue, which may be of help to other owners.
The reason for my Optima battery failure last winter, as explained by my Ferrari dealer, was not the battery itself. It was related to the under-specced OEM Ferrari maintainer it was attached to.
Ferrari uses CTEK-based maintainers. For a while, they used as OEM a model based on the cheap CTEX XS-800, which charges at a maximum of 0.8A, and is recommended for ATVs motorcycles, etc.
Optimas failed one after the other with these chargers, and Ferrari now uses a model based on the CTEK XS-3600, which charges up to 3.6A.
Amazing mistake, which has cost me a new battery and the purchase of a new maintainer.
So any owner still using the small version, be aware this may not be enough, specially if your battery is Optima.
Current & past: 365 GT 2+2, 550 Maranello, F430 Scuderia
Other: Mercedes 230 SL 'Pagode', BMW M3 E30 Evo II, Lancia Delta Integrale Evo 2 and a few other toys.