Well I put new batteries on the house side yesterday and an it had agm on it from factory but I put flooded on it this time and I changed it at the magnum energy box to flooded. Because we headed back...
Have you "Googled" Magnum internal bridge fault? I did. It's an internal fault that really shouldn't occur. If it does you are instructed to contact Magnum tech support. It has nothing to do with your batteries.