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Commercial Grade Battery Box for Group 8D Batteries - Vented
(140 reviews)
Price: $158.24
In Stock
NOCO
Commercial Grade Battery Box for Group 8D Batteries - Vented
Part Number: 329-HM484
In Stock
$158.24
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- All Info
- Reviews (140)
- Q & A (0)
- Photos
NOCO Battery Boxes - 329-HM484
- Camper Battery Box
- Equipment Battery Box
- Marine Battery Box
- Trailer Battery Box
- Group 8D
- 1 Battery
- Plastic
- NOCO
Battery box protects your automotive, marine, or RV battery against impacts, contaminants, and leaked battery acid. Ventilated lid features cable ports and locking knobs. Reinforced handles for safe grip. Molded plastic is impact and UV resistant.
Features:
- Battery box protects your automotive, marine, or RV battery against impacts, contaminants, and leaked battery acid
- Great for installation on a boat, camper, motorhome, trailer, commercial equipment, and generators
- Rugged, molded plastic is resistant to impact, UV rays, oil, gas, and battery acid
- Maintains impact resistance in extreme conditions down to -20 F
- Internal bumpers keep battery in place to prevent shifting and jolting
- Ventilated lid secures to container with 2 bolt-down knobs
- Multiple exit points allow dangerous acid vapors to be released safely
- 8 Cable ports provide multiple battery wiring options with heavy gauge wire (4 AWG to 0 AWG)
- Acid-resistant reservoir safely captures spilled battery acid inside the box
- Reinforced handles ensure secure grip while carrying the battery
- Meets Federal USCG 183.420 and ABYC E-10.7 requirements for marine use
- Made in the USA
Specs:
- Application: 12-volt marine, RV
- Battery size: group 8D
- External dimensions: 24-7/16" long x 15-7/16" wide x 12-5/16" tall
- Internal dimensions: 21" long x 11-13/16" wide x 10-5/16" tall
- Mounting base dimensions: 22-15/16" long x 13-11/16" wide
- Mounting hole diameter: 5/16"
- Temperature range: -20 F - 320 F
- Weight: 9.2 lbs
- 1-Year limited warranty
HM484 NOCO Commercial Grade Battery Box for Group 8D Batteries
Customer Satisfaction Score:
93% were satisfied with this product
7% of customers were not satisfied
- Arrived Damaged
- Product did not meet expectations
- Wrong item was ordered
Ratings & Reviews
4.6
140 reviews
by:
Joe
07/11/2026
This has been an excellent addition to our trailer and holds our 300ah Lithium battery great. It is a very sturdy box and can take the weight of a 300ah battery with no issues. You will need to install some extra supports over your standard trailer battery mounts because this is a very large battery box. It just fit on our 2025 Cougar 22MLS.
by:
Michael
11/03/2026
This fits my 460AH Lithium battery almost perfectly. It's rugged and should last almost indefinitely.
by:
Stanley
03/28/2026
Box is perfect size for my new Lithium battery. Unfortunately I will need to return or exchange because the manufacturer, NOCO drilled the handscrew holes off location and do not line up with the lid holes...not even close! Etrailer shipped it out quickly and I received it in only a few days.
by:
David
10/21/2026
It’ll work. The base is sturdy enough and is molded for extra rigidity. The top edges are warped but still usable. I do have to say it doesn’t rise to the price I paid. I didn’t have a choice and am thankful I was able to find one.
by:
Charles
05/19/2026
It’s big enough for the upsized lithium battery that I bought and that’s what I needed.
by:
Benjamin
06/02/2026
I've used these for a couple of customers with Lithium batteries. Well made.
by:
Danny P.
11/05/2025
The lid holes are not centered on the sides. So, unfortunately, it requires a significant amount force to align the holes while also screwing in the knob. Disappointed considering how much I paid for this plastic box.
by:
W. Mark
03/31/2026
Nice box. Will do the job fine. Too is a bit thinner than I expected but not a big deal. Thanks for the quick delivery.
by:
Jim
12/17/2025
This NOCO HM484 Single 8D Battery Box lid has deformed holes where the lid hold down fasteners pass through to the box bottom! the machine screw is about 3/16" and the rubber washer to seal the top is 9/16". The off shape oblong hole that the screw fastener should tighten is 1 1/8"X9/16". This is way too big and will not work to fasten the lid and in addition would allow water in.
by:
Bob
05/02/2026
Just what I needed
by:
Randy
09/17/2025
Fit my new lithium battery perfectly!!
by:
Larry
11/12/2025
Kate F.
11/19/2025
Looks great Larry! Thanks for the pics =)
by:
John D.
05/29/2021
WANRING!!! NOCO's own website is [currently] WRONG! These 8D boxes have two holes on the Top cover, plus two very elongated holes for where the screw-down knobs pass through the cover. All four of these holes allow WATER to infiltrate the battery box! Many Seller websites DO NOT show any such holes (as well NOCO's own website shows no such holes). Shame on NOCO!!! However etrailer.com is AWESOME as usual for the etrailer website shows pictures (and Video) of the ACTUAL product and therefore clearly showing both the Holes on the Top cover, and if you look closely, the elongated holes for where the screw-down knobs pass through the Top cover. Other then the extra HOLES, the product itself is top-notch high-quality sturdy and highly recommended..., but beware that Outdoor placement will allow water into this box (with a little bit of DIY the four holes can of course be closed up... for they are quite small). I hope this HELPS others like myself who did desire to have NO Holes as pictured out on the NOCO website :) Ps. Thank you very much George! (customer support person at etrailer.com)
by:
Tim,
09/22/2021
We have used the HM484 battery box and one other NOCO model and they are the best battery boxes we have ever used. Both inside and outside, fixed and mobile they are the best and we will only used NOCO Battery boxes in the future. Heavy construction, well fitted top will cable access and four mounting feet make them a great value
by:
James
03/23/2026
It is not what I'd expect from a 150.00 battery box. I was expecting a sturdy strong box but this is not any better than a 30-40 dollar single battery box also the lid had holes that were not lined up with the nuts in the box. I had to correc this with a large drill bit. Just over all so so quality. But it will do the job, so I am using it.
by:
David
06/21/2023
Arrived on time, and in good shape. It's a box, a well made box, but just a box. The interior dimensions published by etrailer are spot on, and after I installed the busbars and a 300 AH lithium battery I had one eighth of an inch to spare, exactly as planned. Good numbers equal good results.
by:
Scott
08/05/2025
Used for a 400ah lithium, dimensions were correct!
by:
Agandy
08/06/2024
The box is a fine fit for my Litime 48 volt 100 amphour battery. Protected the battery throught the past winter with no problems.
by:
Timothy
07/03/2023
Used for my 300ah Lithium battery for my trailer perfect fit! Thanks!
by:
Kasey
10/27/2022
Really fast shipping. Thank you
by:
Robert E
05/07/2025
Great product.
by:
Nabil
10/01/2022
The 8D battery on my boat fits just fine.
by:
Greg
04/10/2021
Nice product, decent price.
by:
Lori
05/02/2026
by:
Joe
03/23/2026
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Show More Reviews
See what our Experts say about this NOCO Battery Boxes
- Do You Have a Battery Box w/ Internal Dimensions of 16" long x 8" wide x 10" tall?Hey David. For a battery box with internal dimensions of 16" long x 8" wide x 10" tall, the closest option we have is the Commercial Grade Battery Box for Group 8D Batteries item # 329-HM484. The Battery Box item # 329-HM484 has internal dimensions of 21" long x 11-13/16" wide x 10-5/16" tall. It measures 24-7/16" long x 15-7/16" wide x 12-5/16" tall overall. It is made of impact and UV resistant molded plastic and has mounting holes built into the bottom to attach it to your trailer's...
view full answer... - Will the Bright Way Deep Cycle 250 Hour Battery Replace Two 100 Hour GPL-27T 12V Lifetime Batteries?It sure will Frank. The Bright Way Deep Cycle RV Battery item # BRW64FR is going to replace both of your GPL-27T 12V 100AMP LifeTime batteries and give you a bit extra. The Bright Way Deep Cycle RV Battery item # BRW64FR is a 250 amp hour battery. It's a 12v AGM battery that measures 20-1/2" long x 10-1/2" wide x 8-3/4" tall. It weighs 156.2 lbs. For a battery box, I recommend the Commercial Grade Battery Box for Group 8D Batteries item # 329-HM484. This box measures 24-7/16" long x...
view full answer... - Battery Box Options to Carry 2 Group 27 BatteriesI would agree that is a lot of money for a battery box to carry two Group 27 batteries. For something more affordable we have the NOCO part # 329-HM408, and the part # 329-HM484 which are a little bigger than needed but would still work great.
view full answer... - How Can You Mount The Commercial Grade Battery Box To An A-Frame With Battery Rails?Great question, lets have a look at this unit and see what we can figure out. **Commercial Grade Battery Box for Group 8D Batteries - Vented # 329-HM484. *TorkLift PowerArmor Locking Battery Box - 6V and 12V Lithium Batteries - Powder Coated Aluminum # TLA7700L. The Commercial grade battery box is 24-7/16" long x 15-7/16" wide x 12-5/16" tall and its mounting base is 22-15/16" long x 13-11/16" wide with a mounting hole diameter of 5/16". We do not offer any kits to mount this unit to...
view full answer... - Battery Box Large Enough To Hold 2 Group 24- 12V BatteriesI recommend the NOCO Commercial Grade battery box part # 329-HM484 to hold both of the group 24 batteries. From my research a group 24- 12 volt battery measures 10.25" long x 6.8125" wide x 8.875" tall. This battery box measures 21" long x 11-13/16" wide x 10-5/16" tall of internal usable space. This is the most cost effective box that we carry that is spacious enough for the 2 batteries. I would measure the regulator and make sure it can fit with the two batteries though. I have attached...
view full answer...
- Will The TorkLift PowerArmor Solar Locking Battery Box Work With Group 8D Batteries?Hello Matt, we do have an option for you, but the TorkLift PowerArmor Solar Locking Battery Box # TLA7700LS will not work with your group D8 batteries. The battery box has internal dimensions of 31" long x 7-5/8" wide, so your battery will be much too wide. Our best option for a group 8D battery is the Commercial Grade Battery Box for Group 8D Batteries # 329-HM484. This is a plastic battery box made specifically for 8D batteries. It has internal dimensions of 21" long x 11-13/16" wide...
view full answer... - Recommended Battery Box for 2 6V Batteries Mounted on Trailer TongueFor a box that will fit both of your # BRW74FR I recommend the # 329-HM484. The internal dimensions of this battery box are 21" long x 11-13/16" wide x 10-5/16" tall so you will be able to easily fit both batteries inside. This features a ventilated lid, 8 cable ports, and internal bumpers to prevent shifting and jolting. If you would like a more secure option, the TorkLift PowerArmor # TLA7712R would also be a good choice. This features a locking lid for security as well as a heavy-gauge,...
view full answer... - Internal Dimensions of NOCO Commercial Grade Battery Box # 329-HM484The internal dimensions of the NOCO Commercial Grade Battery Box # 329-HM484 that you referenced is 21" long x 11-13/16" wide x 10-5/16" deep which could possibly carry two batteries, but it really depends on the size of the batteries. It was intended for two smaller sized batteries.
view full answer...
Do you have a question about this Battery Box?
Info for this part was:
Expert Research:
Jameson C
Video by:
Dustin K
Installed by:
Cole B
Installed by:
David F
Video Edited:
Chris R
Updated by:
Wilson B
Updated by:
Alex H
Edited by:
Daron K
Written by:
Brian T
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Gwendolyn Y.
12/18/2025
Hey, Jim. I'm really sorry to see how your battery box arrived. I'll be reaching out and getting this taken care of for you ASAP!