CTEK MXS 5.0 has got to be the only one to go for IMHO
https://www.tayna.co.uk/battery-chargers/ctek/mxs5-0/
As recommended by BMW, Audi, Porsche etc
These are the ones you will find in all the showrooms
PS @jebusRS Not an exact science but if your car car, any car, has stop/start it more...