Review on ⚓️ Blue Sea Systems - Battery Switch ON/Off AFD: Enhance Control and Safety for Your Marine Electrical System by Sean Moran

I had a starting optimum and wanted to add some more lights and a better stereo to my watercraft. I knew I needed to add some more juice and wanted to make sure my family was safe. This switch was easy to install and gave me a lot of versatility for my batteries. You can use one or the other or both at the same time. I bought one with AFD because of my high performance system (455 Olds Engine, with some ponies). Recommended for single battery or dual battery systems.