Forum Discussion
Allworth
Jul 26, 2014Explorer II
Sorry, cross venting is NOT required in a battery box. Years spent doing safety inspections on heavy equipment speaking here.
Because hydrogen is lighter than air, a top vent is required for confined space installations. the vent must open to "an external surface". Most RV battery boxes (that I have ever seen) are made of an acid resistant ABS material, closed on the bottom and vented on the top, with a flexible hose attached to the top vent and running UP to a vent in the front or side wall of the basement. The explosive hydrogen floats up and out. It doesn't need circulation of outside air.
It certainly wouldn't hurt anything to have a bottom vent, but it is not required.
Because hydrogen is lighter than air, a top vent is required for confined space installations. the vent must open to "an external surface". Most RV battery boxes (that I have ever seen) are made of an acid resistant ABS material, closed on the bottom and vented on the top, with a flexible hose attached to the top vent and running UP to a vent in the front or side wall of the basement. The explosive hydrogen floats up and out. It doesn't need circulation of outside air.
It certainly wouldn't hurt anything to have a bottom vent, but it is not required.
About Fifth Wheel Group
19,006 PostsLatest Activity: Feb 17, 2025