From all advice received on my side and the way I keep my battery
banks ...... Best is to keep them charged up as much as possible and for as long as possible.
Unfortunately I do consume a lot of power (350 amps per day) but Since I am no longer on a marina and living on anchor
remotely, I use my genset to run all electrical appliances
such as washing
drying machine etc. whilst at the same time powering my Victron chargers (240 ah) for bulk charge. Once the batteries kick into absorption mode I let the solar panels
do the rest.
When I start engines I have two Balmar
alternators pushing 150 ah each viz a smart regulator
and centerfielder (theoretically 300 ah availability).
I do as much as I can to keep my batteries fully charged and never let them ever drop below 60% battery
Works great on my boat