This is the way to go, I do the same with CTEK charger : maintainer. If the 12V battery low warning comes on I attach it overnight to CTEK and all’s well. Best solution is to drive the car regularly but if that’s not practical the CTEK is the solution.
During the year 2 service of my RWD Sport Tourismo the technician reported a loose rear camera - needing bumper removal and securing camera.
Service chap says it isn’t covered by warranty as likely caused by a bump - although no signs of a bump anywhere and it’s cost c. £350!! FFS!
Why the tech...