Hello, first of all, the amount of cables does not influence but the load of each one (amperage per consounding hour) with this I mean that it is more dangerous to put 2 thick cables to two malacates that will consume a lot to put 15 finite cables to feed some girls or many LEDs.
In the battery the maximum will give you the amount that enter in the terminal and the capacity in ampers that this support

and in the donkey, if you connect them in the donkey terminal you can put a few that do not cosmman load when starting, tries not to go from 15 or 20 ampers.
I hope it has been clear in the ezplication, greetings and luck