I have a Blue Sea 7650 Add a battery that I installed last year. Works perfect on our Catalina 30 . Have dedicated house and start. I recently got our 12 volt fridge working and have run into some issues. Fine during the day when solar charging. But during the night it will kill the house battery and the ACR will disconnect. Come daylight agin the ACR is still off and solar cant charge things. Engine will still start but house is dead. These are new batteries. So I’m thinking adding a second or 3rd house battery for the extra load thats being drawn. Have lots of amperage available. The ACR works good before and i think as i read in Blue Sea stuff that the ACR will lock out the low battery. Only you problem is now it wont allow the solar to charge.