This is a ducky solution. There is less chance that your battery will leak acid and corrode anything. The battery sits up high where it should be, but has a sort of wooden diaper to prevent it from misbehaving.
It's as elegant as a solution could be.
Battery quick release gizmos have a plastic knob (mine has a green knob) and you can disconnect the battery without a tool.
There is another type that has a knife switch.
Remember that your MBZ radio will not work if you disconnect the battery unless you punch in the code. I am sure you are aware of this.
Semibodacious Transmogrifications a Specialty
1990 300D 2.5 Turbo sedan 171K (Rudolf)
1985 300D Turbo TD Wagon 219K (Remuda)
"Time flies like and arrow, yet fruit flies like a banana"