Battery box for trailer

[TRINDU]

I dont want to mount the battery in the open on the tongue. Prefer to mount it in the toolbox (built in to GN uprights) but I have straps, binders, etc bouncing around in there.

What is a good enclosed box to mount a optima (it's what I have for now) to protect it from:

A. Elements

B. Other trailer parts flying about

I'll eventually add lights and such, but right now its sole purpose is a winch.

 

[TrailTamer]

https://www.etrailer.com/Battery-Boxes/NOCO/329-HM318BKS.html

 

[arse_sidewards]

Is one of those plastic marine boxes with the strap not sufficient?

I know you southerners can't drive but I can't see the ratchet straps and binders picking up that much momentum inside the box.