http://www.stormcam.org/fish-finder/
Which battery do I need a Shakespeare ScanMaster DF-1975 a fish finder?
My father gave me this stage fish finder. It really is in Good Condition but has no instructions. If anyone can know anything about fish finder, it would be great! Thank you
I guess the 6 volt square with two springs on top if it is a mobile unit. Otherwise, connect the 12V system of your boat. you should find a son the couple who look like they need to go somewhere.
How to use a Fish Finder!