WelshGas
Retired after 42 yrs and enjoying Life.
Super Poster
Lifetime VIP Member
Due to the Emissions technology, smart alternator and Regenerative Braking coupled with Stop/Start the system only charges the Engine Battery to 80% capacity and likewise the Leisure Batteries are also not fully charged.Also if you drive the van as a car, every day? Or in that case it's not needed?
To prolong the life of the Leisure Batteries, as has been mentioned above and mentioned in the Handbook, plugging into the EHU monthly for at least 12 hrs is best practice.
Or fit a Solar Panel if parked outside with no access to EHU.