Securing batteries in forward compartment (Security)

I just installed 4 t125s upfront in a rubber made box. In order to vent I drilled two holes through in the base. I'm not concerned with theft, however that answers your question. Buyer a thick gorilla cable lock with round key that goes through the hole and around the batteries. That would do it. I would also place a door alarm on it as the first line of defense linked to the all the lights so their is sound plus lights before they figure out hos to cut the cable...

Happy trails