Running Multiplus 2000/24, MPPT 100/50 with 640w solar, cerbo with no screen, and two Orion 12/24/15 off two outboards with 33amp 12v alternators. Battery bank is two gr27 agm gel, with space for two more.

Concerned about too much current flowing to my too small bank. I can size the bank up, but want to understand how to current limit.

The Orions can deliver 30amps total, solar, say 22 amps, and if hooked to shore power, the Multiplus charger some other higher amount like to 50 amp. So, seeing this as up to 102 amps into two batteries sounds like a fire or exploding battery.

I don't even know how to determine the safe charging limits, so any help is appreciated.