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NOCO HM426 Dual 6-Volt Commercial Grade Battery Box for Automotive, Marine and RV Batteries

by NOCO
4.7 out of 5 stars 37 customer reviews
| 16 answered questions
List Price: $155.95
Price: $89.64 & FREE Shipping. Details
You Save: $66.31 (43%)
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Dual 6V
  • Enter your model number above to make sure this fits.
  • Commercial grade battery box for Automotive, Marine, RV and more; Designed for dual 6-volt batteries
  • Rugged design for commercial applications; Four corner fastening system and captive lid for easy installations, large cable entry holes for large gauge cables, full flow ventilation for releasing battery gases, and large battery acid reservoir
  • Designed for rugged environments; Impact resistant down to minus 40 degrees Fahrenheit, withstands acid, gas, oil and other contaminants, and immune to UV exposure
  • Keeps your battery safe; Limits water entry, effectively collects battery acid, allows adequate ventilation, and protects against accidental contact of battery terminals
  • Ships in Certified Frustration-Free Packaging
  • Certified and tested; Meets United States Coast Guard (USCG) Code of Federal Regulations 183.420 and American Boat and Yacht Council (ABYC) E-10.7 specifications
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$89.64 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com in easy-to-open packaging. Gift-wrap available.

Frequently Bought Together

  • NOCO HM426 Dual 6-Volt Commercial Grade Battery Box for Automotive, Marine and RV Batteries
  • +
  • Camco 47473 Black 5/16" Stud 12" Long 2-Gauge Marine Battery Cable and Lug Assembly Tinned
  • +
  • Camco 47483 Red 3/8" Stud 12" Long 2-Gauge Marine Battery Cable and Tinned Lug Assembly
Total price: $109.83
Buy the selected items together

Product Information

Style:Dual 6V

Technical Details

Brand NOCO
Item Weight 30 pounds
Product Dimensions 13.5 x 13 x 14 inches
Origin USA
Item model number HM426
Manufacturer Part Number HM426

Additional Information

ASIN B003VAUG5A
Customer Reviews
4.7 out of 5 stars 37 customer reviews

4.7 out of 5 stars
Best Sellers Rank #31,644 in Automotive (See top 100)
#45 in Sports & Outdoors > Sports & Fitness > Boating & Sailing > Boating > Electrical Equipment > Battery Chargers
#517 in Automotive > Replacement Parts > Batteries & Accessories
#2,185 in Sports & Outdoors > Sports & Fitness > Hunting & Fishing > Fishing > Fishing Watercraft & Trolling Motors
Shipping Weight 8.3 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available July 9, 2010

Warranty & Support

Warranty, Parts:Parts
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Customer Questions & Answers
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Customer Reviews

Top Customer Reviews

4.0 out of 5 starsGreat Battery Box for RV Trailer applications
By Jethro on August 15, 2012
Style Name: Dual 6V Verified Purchase
I replaced my trailers single battery and battery box with two 6 volt golf cart batteries. It has worked great. I had to make minor modifications to get this to fit. I had to move the propane tanks a few inches to allow for the extra space of this larger battery box. Although this trailer box is intended for marine applications, it works great for RV trailer as well. I installed this on a 1972 Silver Streak Continental 28 foot trailer. The box has great openings on the lid which open downward so that the batteries are protected from rain, snow, dust, and dirt, and you can run your electrical wires wherever needed for your particular application. This top lid also has two screw down handles which really ensure things stay put. Due to the expense of batteries, I would also recommend you install steel straps or bars around this box to keep it secure from theft and to help keep it secure to your trailer or boat. There are four installation screw holes in the bottom of each corner to also keep this securely in place. This is a well designed battery box from NOCO. I have had very good experiences with NOCO battery chargers and maintainers, and now their battery boxes as well. This box is great for allowing one to run two 6 volt golf cart batteries in series so that the net result voltage is 12 volts.
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4.0 out of 5 starsNOCO HM426 Black Dual 6V Commercial Battery Box
By Bear on December 30, 2011
Style Name: Dual 6V Verified Purchase
Well made except it just doesn't have the bottom and top vent ports that are needed for RV batteries. I purchased this to house 2 Trojan T-105 batteries in our Toy Hauler trailer. I used a hole saw to cut out the top and bottom vent ports on the original single battery box, then a smaller hole saw to cut corresponding holes in this box. I then attached the ports using rivets with a layer of silicone between surfaces to seal them. Now the bottom vent port sits in the same hole in the trailer floor and the top port connects to the original vent hose that goes out the side of the trailer.
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5.0 out of 5 starsPerfect enclosure for two L16s
By josh on September 16, 2014
Style Name: Dual L16 Verified Purchase
I have 2 of these enclosures for my (4) L16 AGM batteries in my home battery backup system. They are very durable. The cable holes accommodate my #2/0 wire for my inverter/charger. The enclosure is not completely sealed, I would not use it indoors with a flooded lead acid battery, unless modified to be properly sealed and vented.
Only issue I have had is the top being difficult to close with my 12" long #2/0 battery interconnect cables. I think shorter cables about 8" long would solve the problem.
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4.0 out of 5 starsThings it needs.
By boyd on June 9, 2013
Style Name: Dual 6V Verified Purchase
First of all, It's a great battery box that fulfilled my needs. I mounted it on the tongue of an enclosed race trailer. Although I couldn't use the mounting holes I simply drilled through the bottom where I needed too and used fender washers. The 2 things I wish it had are a locking lid and a way to close off the unused wire holes. I understand this box was really not intended for the purpose I'm using it for so other than that it's all good
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5.0 out of 5 starsVery well built and comes with 2 knobs to secure ...
By Aaron C. on March 3, 2016
Style Name: Dual 8D Verified Purchase
Very well built and comes with 2 knobs to secure the cover. There are 4 notches at each outside corner of the box to secure it from moving around. Large enough for 2 Group 8D batteries. This is a vented box, probably for marine use. I wish there was a non vented box for my RV use. but I was able to use it by modifying the box to block up the multiple vents and modified the cover to install a hose to vent the gasses through the rV bay wall.
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4.0 out of 5 starsPurchased two of these solid boxes, fits the L16's ...
By RSG on July 31, 2015
Style Name: Dual L16 Verified Purchase
Purchased two of these solid boxes, fits the L16's perfectly without a crazy amount of extra space taken from the exterior. Bit pricey but they are not flimsy so I suppose you get what you pay for sometimes.
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4.0 out of 5 starsSturdy and easy to use for outside installation
By Lee Stauffer on June 7, 2015
Style Name: Dual L16 Verified Purchase
Used this to mount two L16H-AC Trojan batteries on the tongue of my toy hauler. Very nice and sturdy, easy to mount. I always use a primary battery fuse, it was a little tricky to mount a 100A thermal breaker directly on the terminals. Beware that it is not air tight, so an installation in an enclosed space would release hydrogen gas and create a hazard. Not a hazard outside on the tongue.
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5.0 out of 5 starsNOCO HM485 BATTERY BOX
By Ronald M. Lopez on January 13, 2012
Style Name: Dual 8D
Well made battery box that fits two 8d batteries well. It was easy to mount with the outside mounting slots. Works as described, would recommend to anyone.
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Most Recent Customer Reviews

4.0 out of 5 starsGood but pricey.

Very good quality box. I put this in a fifth wheel basement so it had to be vented to the outside. I had to modify this box for that to work by blocking six vent holes around the... Read more

Published 5 months ago by Ned
5.0 out of 5 starsFive Stars

Great product!

Published 6 months ago by Scott Campbell
5.0 out of 5 starsFive Stars

Item was as described and delivered on time!

Published 6 months ago by Alcor Energy Solutions
4.0 out of 5 starsFour Stars

Difficult to seal for compartment install.

Published 7 months ago by cmeski
5.0 out of 5 starsGo figure I love it and fits well in my Toyhauler garage

As I understood before the purchase, this box it is designed for 8D sealed batteries. No vents because it contains sealed gas less batteries. Read more

Published 8 months ago by 1st Energy Representative
5.0 out of 5 starsGood Heavy Duty Carrier

Item as described, works great for two T-105 Trojan 6 volt batteries, put in my rear cargo carrier and hook up when dry camping to main battery bank

Published 9 months ago by silverado12775
5.0 out of 5 starsVery sturdy case and holds 2 Duracell 6 volt batteries very ...

Very sturdy case and holds 2 Duracell 6 volt batteries very well. Secured the battery box behind the propane tanks on the tongue of my travel trailer. Works great thanks

Published 12 months ago by George M.
5.0 out of 5 starsVery sturdy box.

The box worked as I needed it too. I drilled a hole in the top to attach my vent hole tubing. Very sturdy box.

Published 14 months ago by Robert E McFadden
5.0 out of 5 starsFive Stars

Everything fit perfctly

Published 15 months ago by Marlin Bodily
5.0 out of 5 starsFive Stars

Good solid box with extra room around battery.

Published 17 months ago by Richard Wetter

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