Since I have retired, I have used my three litre diesel Mercedes on far fewer occasions and I have been getting concerned about the battery going flat as the car sits idly in the garage for many days - and I have a three week holiday coming up.
My need is for a safe and reliable smart battery charger that I can permanently connect to the car without removing the battery. There is much conflicting advice about the wisdom of a) connecting in situ, and b) leaving it connected for long periods.
However, the CTEK MXS 3.6 fits the bill perfectly and since I have read up all the details on it I am totally reassured that it meets my requirements. I have set it up and all works perfectly - very simple connections and a green LED tells me that the battery is always fully charged. Well recommended for those with this type of requirement.