Dry boxing FF battery?

Here you go.  Trolling motor plug for the connection and pelican box.  All water tight. 

Where'd you get the plug for the box? Already went and got a dry box.

Bass pro.  Just a standard trolling motor plug though, so anyone may have it.

https://www.amazon.com/MinnKota-MKR-18-12V-Plug-Receptacle/dp/B001PTHKRQ

I started using flush-mount connectors that are used to run power to the roof of an RV.  Much cleaner box.

https://www.amazon.com/gp/product/B01GVSY3CA/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

You need a backing plate (25-cent thick nylon washer from the hardware store) and nuts and bolts to replace the screws.