sort of but with a 1-2-all switch where the batteries
meet. since the bms never opens unless there is a problem.
"When the lithium battery
is fully charged it is taken offline by the BMS" this is incorrect. the BMS will not open unless there is an problem.
at dock agm battery
floats and lithium
can sit. at anchor
lithium battery only, no need to drain the agm. while motoring on both the agm protects the alt from a bms open.