☑ Vent hydrogen gas to the outdoors
☑ Line battery box to contain battery acid spillage
☑ Place air intake vents low, but above liner
☑ Use duct seal around the battery cables where it enters the conduit to keep gas out of the conduit
☑ Caulk the battery box and seal cover with weather stripping
☑ Plywood: 1/2- to 3/4-inch thickness; A-C or B-C grade or better
☑ Insulate bottom of box if floors stay cold all winter
☑ Restrict access to batteries, such as with a latch and/or padlock
☑ Keep battery box depth at 24 inches or less to reach and maintain back batteries
☑ Leave room for battery posts, cables, interconnects, and handles, and maneuvering a water jug
