I went camping last weekend and It was just to dark to do anything inside the shell. http://amzn.to/2jcOsv6 Led Strip Lights Kit
I did this so I could keep the battery inside the back of the truck. I really did not like the other mounting options. I don’t think AGM battery s need to be vented. But If there is a over charge or problem they will vent. So its better to be safe then sorry.