Pics at link:
“The whole black part is a battery with a contact point up in the center of the bottom and has a push button on the end of the handle…”
It was found on a houseboat.
.
Sail winch power source and control?
Saw the pictures of it opened up.
Wondering if it is a battery pack for diving lighting equipment or camera.
I’m thinking it’s the handle and battery pack for a spotlight or flashlight.