Complete newby with no real experience of multiple battery bank setups.
I have just purchased a trawler style motor cruiser, the boat has three battery banks, 6 x 12v house batteries, 1 x 12v engine start and 1 by 12v generator start. I have a Victron Invertor - Charger. I would like to install a battery monitor so I can easily verify the status of each battery bank. The boat has a "Onan" selector switch to change from Shore Power to Generator Power. I have no Solar Panels but may incorporate either panels and / or a wind charger at a later time. I would also like to incorporate some sort of automatic charging system to manage the charging of each battery bank to ensure I don't cook the batteries.
All suggestions and any help would be greatly appreciated, as I am just learning this stuff it would also be appreciated is responses were in simple English and that jargon and abbreviations were kept to a minimum