I've got 2 battery banks to maintain. One of them has a 50A victron charger on it and all winter I'll leave the camper plugged in so I shouldn't have to worry about parasitic discharge. I have shunts on the battery banks and apparently those draw 12ma.
On my second bank, however, presently I have nothing to keep it charged. I do own a watt cycle charger, I think 60A model, but, I'd like to stick a 5A onboard lithium charger in to just keep that battery from discharging too far. Is that a bad idea? Would a larger charger be better?
Or, perhaps rather than have either one of the 2 battery banks actively charging, I should disconnect them and let them discharge to 60% for the off season? Is there a charger that would be appropriate to use that would keep them only partially charged like that?