NOCO BG31 Snap-Top Battery Box, Group 24–31, Black
Available in stock (165)
Couldn't load pickup availability
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 # | Description | 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
What batteries does the NOCO BG31 fit?
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.
What are the inside and outside dimensions?
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.
Is the NOCO BG31 vented?
Yes. It is fully ventilated to help release battery gases safely during use and charging.
Is this battery box Coast Guard and ABYC certified?
Yes. It meets Coast Guard Code of Federal Regulations 183.420 and American Boat and Yacht Council E-10.7 requirements.
What is included with the NOCO BG31?
It includes a 42 inch battery box strap. It does not include a cable or hold-down.
Which replacement straps fit the BG31?
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.
Is the NOCO BG31 suitable for marine use?
Yes. It is marine rated and designed for boat, RV, camper, and trailer battery installations.
Shipping & Returns
Shipping & Returns
Shipping:
Most qualifying in-stock orders are processed within one business day. In the contiguous 48 states, eligible in-stock orders placed before 12:00 PM (noon) in the customer's local time zone typically ship the same business day. Orders shipping to Alaska or Hawaii use a 12:00 PM Pacific Time cutoff (California time). These cutoffs apply only to eligible in-stock orders and are not guaranteed shipping or delivery times. Same-day shipping refers to processing and carrier handoff, not delivery. Weekends and holidays are excluded.
Payment verification, address verification, fraud review, and inventory availability may take longer. Supplier-direct fulfillment, freight shipping, and special handling may also take longer.
Returns:
Eligible products may be returned within 60 days of delivery, subject to our Return Policy. Return authorization is required. Certain products are final sale or subject to manufacturer warranty procedures, shipping charges, and applicable restocking fees.
Please inspect your order promptly upon delivery. Shipping damage, incorrect items, missing components, or quantity shortages must be reported within 3 business days after delivery. Retain the product, original packaging, shipping labels, and photographs while your claim is reviewed.
