it appears they have a batt out that you can tap either 12 or 16v. Mine are the 8|4 mod from kinetik with an additional pos and neg post at the 8v mark.
its a moded bank it can consist of several combonations of 2400's generally was 1 modded battery and 3 regular,but that configuration can be done differently. the banks are custom and for propper information on what can be done for you you should contact kinetik directly. when i worked there they did it 2 different ways depending on what the customer needed. contact pats@kinetikaudio.com