NOCO HM484 Commercial Grade Battery Box – Single 8D
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Heavy-Duty Battery Protection for Marine, RV & Commercial Applications
The NOCO HM484 is a rotationally molded, commercial-grade battery box engineered to house a single Group 8D battery in the most demanding environments. Built from impact-resistant, UV-stabilized polyethylene, it delivers long-term protection against the elements — including saltwater exposure, fuel spills, and extreme cold — making it a reliable choice for offshore vessels, large RVs, and commercial equipment.
Key Features
- Four-corner fastening system with captive lid for a secure, rattle-free installation
- Large cable entry holes accommodate wire up to 4/0 AWG for high-current applications
- Full-flow ventilation channels safely release battery off-gassing
- Oversized battery acid reservoir for added safety
- Rotationally molded construction resists UV, oil, gas, and low-temperature cracking
- Meets USCG Code of Federal Regulations 183.420
- Meets ABYC Standard E-10.7
Parts Desk Insights
Best suited for large-format 8D batteries commonly used in twin-engine offshore boats, commercial fishing vessels, and heavy-duty RV house banks. The four-corner fastening and captive lid make this the preferred choice when the battery box is mounted in a high-vibration or rough-water environment. For dual 8D configurations, see the NOCO HM485 Dual 8D Battery Box. For single 4D applications, consider the NOCO HM408 Single 4D Battery Box. For dual 6V golf-cart style batteries, the NOCO HM426 Dual 6V Battery Box is the correct fit. Complete your installation with the NOCO BS48R 48" Battery Box Strap Kit for a secure, code-compliant hold-down.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.