Ok, so. We are on a boat.
we have 2 paralleled multi plus 24/3000/70/50 with a 560ah battery bank comprised of 4 agm exide ep1200.
AC power is provided either by the 7kva gen or shore power. The multis are set to 12.5 and so 25amp overall. There is a victron battery monitor connected to the colour control gx and the system uses that for SOC. Additionally there is also some DC charge from the alternators on the boat but it’s likely small enough in the real world the be discounted. My question is. Should we fit a DC generator to supplement the AC system and the battery’s were in a discharged state. The DC generator might deliver already in excess of what is required to the batteries, plus if the AC generator is running the Multiplus might deliver a charging current, how can I be sure that in all scenarios and without intervention that the batteries cannot be overcharged. I know that in all likely hood the Multiplus could be set to stop and start the DC generator as demand changes. The system supplies and acts as UPS for a survey suite so the priority to maintain power and have a back up to. I look forward to your responses.