I'm not OP, but I assume it's a 12v car battery, with a 12v solar panel, and a 12v automotive ham radio connected to the battery, in a box. Edit: the solar pan

I'm not OP, but I assume it's a 12v car battery, with a 12v solar panel, and a 12v automotive ham radio connected to the battery, in a box. Edit: the solar panel is on top of the box. /s