BR switch as a battery disconnect

This should be right schematic

I´m sorry. I forgot to note that this Custom built ROV will only include the T500 thrusters.

Hello.

could you give me the type of the relay ?

I bought this one

https://www.ebay.com/itm/354601121247?var=623976868712

Select type: Relay
Current: 100A(DC-DC)
Qty(pcs): 1pcs