Re: Battery box??
They are cheap and it gives you a good way to make sure your battery stays is place if you pitch or roll.
Keep the positive wire from hitting some ground and starting a fire.
Keeps any acid leakage away from other parts of the boat
Keeps battery clean and dry if get water in the boat or land a big Shark, Sturgeon, halibutt, Salmon or Tuna.
Boarded By Coast Guard OffShore Last Year and they check all the saftey Gear. In Engine area only checked Bildge Blower, Flame Arester, and Fuel Lines.
Very nice group of young men.