The 11 lb. propane tank was there for transportation only. We now have a tank mount outside on the trailer platform. Not in the picture is the battery box under the converter. It is generally not a good idea to put the battery in the same compartment with other electrical gear. To reduce that concern my battery box is vented to the outside, and I have put a vent in the back of the electrical compartment. The battery is a sealed AGM deep cycle type and not supposed to give off much gas.