My 2017 Terrova has had some weird issues too. We used it for 2 days in ND from fully charged to fully discharged, everything worked fine.Tried it on the Mississippi River a couple weeks later and couldn’t get remote to connect. Kept losing bluetooth connection. I only post this to say the tech at Scheel’s says everything tests okay on their batteries.They suggested it could be a voltage issue as the terrova’s are sensitive to voltage changes or something. My battery system has on e new and one od battery so that is what I need to check next. A friend said that fixed his issues.

Great advice everyone. I already have the puck mounted on the bow, inside a little storage door. If I have bad performance there, not too hard to move it back.

The instructions for fuse block recommends an inline fuse between the battery and block. Any ideas what size? Just planning to run the terrova puck, and humminbird sonar and maybe a few outlets for plugging in an underwater camera, usb port for phone charging, etc

Also, do I need a switch to turn off power to the block? The humminbird will always be removed from its mount and I am not sure if the puck draws much power at all.