DFI owners - What battery cable size do you have??

[slimtim]

I have a Tohatsu TLDI 90hp that requires a giganormous battery. I currently have 16mm2 battery (welding) cables which I suspect might be on the small size. I cannot however find a good reference to how big I actually need. I am aware of the calculations for voltage drop based on cable length but I am unsure of the exact current draw of my engine while cranking. I suspect it is much more than the 83Amps of the starter motor but don't really know.

I am curious what size (cross section area mm2) battery cables people are running, especially if you have a 90hp Tohatsu or Optimax or something similar.

Thanks in advance!