Description
The NOCO BG31 Snap-Top Battery Box is a rugged battery storage solution for a single Group 24, 27, or 31 automotive, marine, or RV battery. The snap-top design uses locking tabs to secure the cover to the case, while full ventilation helps release battery gases safely during use and charging.
Built from impact-resistant plastic with reinforced handles, this black matte battery box maintains its properties down to -20°F and resists UV, oil, gas, and other contaminants. It meets Coast Guard CFR 183.420 and ABYC E-10.7 requirements for marine battery installations.
Features & Benefits
- Designed for a single Group 24 to Group 31 battery
- Snap-top cover with locking tabs for secure fastening
- Adjustable divider to accommodate various battery sizes
- Fully ventilated to release battery gases safely
- Reinforced plastic handles help prevent cracking during relocation
- Impact resistant down to -20°F
- UV, oil, gas, and contaminant resistant
- Meets Coast Guard Code of Federal Regulations 183.420
- Meets American Boat and Yacht Council E-10.7
- Includes 42 inch battery box strap
- Limited 1-year warranty
Specifications
| Brand | NOCO |
| Manufacturer Part # | BG31 |
| Model | HM318BKS Snap-Top |
| Type | Snap-Top Battery Box |
| Battery Quantity | 1 |
| Compatibility | Group 24, 27, and 31 Batteries |
| Inside Dimensions | 14 Inch L x 7-1/8 Inch W x 9-5/8 Inch H |
| External Dimensions | 17-5/8 Inch L x 10 Inch W x 10-3/4 Inch H |
| Color | Black |
| Material | Plastic |
| Finish | Matte |
| Vented | Yes |
| Includes Cable | No |
| Includes Hold-Down | No |
| Included Strap | 42 Inch Battery Box Strap |
| Weight | 3.29 lb |
| Marine Rated | Yes |
| Certifications | Coast Guard CFR 183.420, ABYC E-10.7 |
| Warranty | Limited 1-Year |
Compatibility
Fits Group 24, 27, and 31 automotive, marine, and RV batteries. Suitable for installation in cars, boats, campers, motorhomes, trailers, caravans, and generator equipment.
Recommended Items
Commonly ordered battery box straps and accessories:
Battery Box Straps
| Part # | Notes | |
|---|---|---|
| 17544 | Battery box strap; use to secure any battery or battery box; 54 inch length; black; with chrome plated hardware | JR Products — universal fit |
| BS48 | Battery box strap; for use with BG series battery boxes; black; woven polypropylene; 48 inch length; with stainless steel hardware | NOCO — designed for BG series boxes |
| BS48R | Battery box strap; for use with BG series battery boxes; black; woven polypropylene; 48 inch length; with stainless steel hardware | NOCO — designed for BG series boxes |
| 13339 | Battery box strap; strap for battery box; black; polypropylene; 42 inch strap | Arcon |
| 12024 | Battery box strap; strap for battery box; black; polypropylene; 42 inch strap | Arcon |
Search by part number on RV & Auto Parts to order compatible battery box straps and accessories.
NOCO BG31 — Frequently Asked Questions
It is designed for a single Group 24, Group 27, or Group 31 automotive, marine, or RV battery. An adjustable divider helps accommodate various battery sizes within that range.
Inside dimensions are 14 inches long by 7-1/8 inches wide by 9-5/8 inches high. External dimensions are 17-5/8 inches long by 10 inches wide by 10-3/4 inches high.
Yes. It is fully ventilated to help release battery gases safely during use and charging.
Yes. It meets Coast Guard Code of Federal Regulations 183.420 and American Boat and Yacht Council E-10.7 requirements.
It includes a 42 inch battery box strap. It does not include a cable or hold-down.
Compatible straps include NOCO BS48 and BS48R for BG series battery boxes, as well as JR Products 17544, Arcon 13339, and Arcon 12024. Verify fitment before ordering.
Yes. It is marine rated and designed for boat, RV, camper, and trailer battery installations.
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