Camco Marine - Battery Box Large Replaces P/n 117-55372 Rvx - 55372. Lightweight, heavy-duty corrosion-resistant polypropylene boxes are designed to secure and protect your battery. Both sizes include a lift-off lid, durable woven hold-down strap, foot clamps, and stainless steel screws. Choose small for group size 24 batteries or large for groups 27, 30, and 31. Both boxes meet USCG CFR 183.420 and ABYC E-010.7 specifications.