Do you plan on riding in the rain? Do you think water could get into that container and short out your batteries?

What some people have done to prevent water from getting in to their connections is they bought some cheap balloons at the store and then cut a hole in the top and put it over the connection part in the wire. I've heard of some guys putting some kind of plastic bag over their controller. I don't know if a balloon would work with putting it over the controller or not.

Some guys also use di-electric grease on their connections to prevent corroding.