Perfect! Thanks for the info. I have the box mounted with the grommets and air gap. It is the 8.4v as it says do not use a regulator with a 2 cell lithium, but it says you can use a 5 cell - 6V pack too, so I guess 6V is ok with it, just don't run a regulator. I am just going to run the 2 cell lithium. Thanks again for the info.