It's a water-resistant battery source. You still use the starter switch you originally used on your boat, it's to get you out of a jam when you get to the dock and your boat is dead. Unfortunately I never went too far with this, I submitted my idea to a few manufacturers and they were not interested :( Then I got married and had a daughter, life got in the way, and this unit is sitting in my garage untouched for a few years. I still think it's a great idea and I appreciate your comment!

@@peterfaggella3120 I’m looking to make something like this as just a portable battery for starting a small vintage outboard motor that has electric start. Basically your box would just need a starter switch wired in and presto.. you have super light weight portable starter. This is especially helpful on small boats where motors and batteries are not kept on board.