Amazon.com: RV Battery Lock - Bracket for 6 Volt Battery Box or Double Box for Travel Trailers and popup Campers *** 1 Bracket only, You Need to Purchase 2 if You Have 2 Batteries**** : Automotive
NOCO - 6-Volt Snap-Top Battery Box - HM306BKS
Truck Camper, bumper and RV battery security - PowerArmor Locking Storage Battery Box | Torklift International
6 Volt Battery Box - JAGER PRO Store
Amazon.com: Camco RV/Marine Battery Box | Protects Your RV/Marine Battery from Collisions and Contaminants | Holds (1) 6-Volt Battery, 1-Pack (55391) , Black : Automotive