I am at the point where I should be getting new starting batteries for my HDJ. My house is a relatively new AGM. Since they are all tied together (with a main switch and ACR) I threw the switch to 'all' and connected to my house. I could just tell my starting batteries were low so I was surprised that my charger went straight to float. I hooked the charger to my starter batteries and it is charging now. Why would that make a difference? I was thinking ACR, but if anything, I would have thought it would bypass the house and go to the low batteries. Now I assume at least my ACR is keeping my house from charging since it doesn't need it anyway. Why wouldn't I be able to charge all my low batteries from the same terminal?