A pair of colour coded rubber battery terminal covers.
For a new/replacement set of battery terminals see: 12V battery terminals (pair), or alternatively there is also the Quick release battery terminals (pair).
C-Line Pump & Light Switch
2.4A Waterproof Dual Port USB A & USB C Power Socket 12V / 24V
Victron Orion-Tr Smart 12/12-30A NON-Isolated DC-DC Charger
Berker Socket Surrounds - Flow Design