Camco Large Battery Box with Straps and Hardware - Group 27, 30, 31, for RV, Auto, and Marine Batteries, Inside 7-1/4" x 13-1/4" x 8-5/8", Black (55372) - Walmart.com
Victron Battery Protect, Smart 12/24-220A
Team Orion Battery Protection Box - RC Car Action
Amazon.co.jp: Outdoor Car Battery Box, Motor Battery Power Center Sailboat RV Multifunctional Overload Protection : Electronics