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NOCO Snap-Top HM318BKS Battery Box, Group 24-31 12V Outdoor Waterproof Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries

4.7 4.7 out of 5 stars 5,153 ratings

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Purchase options and add-ons

Brand NOCO
Unit Count 1.0 Count
Voltage 12 Volts
Model Name HM318BKS
Item Dimensions LxWxH 14 x 7.1 x 9.6 inches

About this item

  • Fit Type: Universal Fit.Fit Type: Universal Fit
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$10.69 ($1.07/Count)
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NOCO Snap-Top HM318BKS Battery Box, Group 24-31 12V Outdoor Waterproof Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries
NOCO Snap-Top HM318BKS Battery Box, Group 24-31 12V Outdoor Waterproof Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries
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Price-35% $12.95
List:$19.99
$89.99$89.99-32% $12.95
List:$18.99
$17.81-34% $189.99
List:$289.99
Delivery
Get it as soon as Monday, Mar 18
Get it as soon as Monday, Mar 18
Get it as soon as Monday, Mar 18
Get it as soon as Monday, Mar 18
Get it as soon as Monday, Mar 18
Customer Ratings
Value for money
4.7
4.2
3.1
4.6
4.5
3.5
Easy to install
4.7
4.8
4.7
4.6
4.2
Sturdiness
4.6
3.6
4.6
4.3
Light weight
4.5
4.4
4.5
4.7
Easy to use
4.4
5.0
4.8
Sold By
Amazon.com
ALL-TOP
Li Time US
Amazon.com
Amazon.com
Amazon.com
voltage
12 volts
12 volts
12 volts
12 volts
12 volts
12 volts
reusability
Single Use
Rechargeable
Rechargeable

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Top Brand: NOCO

Highly Rated
4.7/5 star rating from 100K+ customer ratings
Trending
100K+ orders for this brand in past 3 months
Low Returns
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From the brand

Product Description

The HM318BKS Group 24-31 Snap-Top Battery Box is a battery storage solution for Group 24-31 battery sizes, including 12V Marine, RV, Boat, and Trailer Batteries. It features locking tabs to fasten the cover securely to the battery case, reinforced plastic handles to prevent cracking during battery relocation, and allows adequate ventilation of battery acid vapors. This rugged battery box maintains its impact properties down to minus 20°F, as well as, resistant UV, oil, gas and other contaminants. Perfect installation in a car, boat, camper, motorhome, trailer, or caravan, as well as, generator equipment.

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NOCO Snap-Top HM318BKS Battery Box, Group 24-31 12V Outdoor Waterproof Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries


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What's in the box

  • Group 24-31 Snap-Top Battery Box
  • 42-Inch Battery Box Strap
  • Mounting Hardware
  • Looking for specific info?

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    5,153 global ratings

    Customers say

    Customers like the value, ease of installation, and performance of the battery. For example, they mention it's well made for the price, serves the function well, and the straps are easy to figure out. That said, opinions are mixed on stability, water resistance, and straps.

    AI-generated from the text of customer reviews

    285 customers mention258 positive27 negative

    Customers are satisfied with the quality of the battery box. They mention that it is well-made, sturdy, and durable, and it should last many years. The case is sturdy with ventilation, and the box feels solid. Overall, customers are happy with the product's quality and durability.

    "sturdy, thick plastic.. complete with perfectly fitting lid and tiedowns. highly recommended" Read more

    "Great battery box for my camper. Been using for a couple years and still looks brand new. Great quality and value, durable and sturdy" Read more

    "for the money this is worth it, very well made for a big battery." Read more

    "Looks good. Cant tell how durable it is, but hope it lasts anlong time" Read more

    180 customers mention141 positive39 negative

    Customers like the size of the battery. For example, they say it's perfect for their group 31 battery, fits all the necessary power cables, and has an adjustable divider. They also appreciate the sturdy, thick plastic and the adjustable dividing system.

    "sturdy, thick plastic.. complete with perfectly fitting lid and tiedowns. highly recommended" Read more

    "...It also comes with dividers for small batteries to lock it in tougher and not just "fit within a box"" Read more

    "Lite weight with adjustable width. I am pleased with looks. Not one for an abusive spot." Read more

    "...nice battery box for the price, I just couldn't use it as it wouldn't fit my battery...." Read more

    135 customers mention129 positive6 negative

    Customers appreciate the value of the battery. They say it is well made for the price, and worth it for a big battery.

    "...Great quality and value, durable and sturdy" Read more

    "for the money this is worth it, very well made for a big battery." Read more

    "Its hard to beat the price point especially with the extras...." Read more

    "It was a very nice battery box for the price, I just couldn't use it as it wouldn't fit my battery...." Read more

    134 customers mention130 positive4 negative

    Customers are satisfied with the performance of the battery box. They say it serves the function well, is functional, and is reasonably priced. Some customers also mention that the side handles work fine, and the included battery strap has also worked well.

    "Absolutely fantastic. I wish i got these sooner. I had purchased a renogy package on sale where it also came with the battery box free...." Read more

    "prodcuct was exactly as described and works great for me" Read more

    "I used it anyway for two lawnmower size batteries. Work good. Keeps the rain off of them." Read more

    "...Very happy with this battery box - not expensive and works great." Read more

    28 customers mention26 positive2 negative

    Customers find the installation of the battery to be easy. They mention that the straps are easy to figure out, the top snaps on easily, and the molded cutouts allow the cables to exit. They also mention that they were able to easily drill holes in the lid to mount permanent battery posts, and that the battery is easy to pick up with two hands and carry. Overall, customers find the product to be handy and essential for making home-brew UPS code-compliant.

    "...This box smokes it. Way more manageable. The wires go in easier, the straps are simple and workable, and the case is study...." Read more

    "...The top snaps on easily and the molded cutouts allow the cables to exit easily without exposing the terminals. Good quality at a very good price." Read more

    "This works great so far. Easy to install. Add 1 or 2 centimeter to the actual length of the battery when installing the divider...." Read more

    "...was a good choice the box fit all the component and the material was easy to work with to install the outboard connectors." Read more

    41 customers mention25 positive16 negative

    Customers are mixed about the straps. Some mention that the battery comes with straps, while others say that the strap is cheap and not the best. Some customers also mention that there was a missing part in the strap.

    "...It also comes with two mounting clamps that you screw into the side of your boat/whatever that I'm assuming you pass the strap through to the the..." Read more

    "...The problem I had with this is that the strap has a complex holding mechanism that is a pain to open and close...." Read more

    "...look no further, this is the one plus as an added bonus, they give you the strap." Read more

    "...The lid snaps on and it comes with a strap for added security. I bolted this to the tongue of my enclosed trailer...." Read more

    36 customers mention24 positive12 negative

    Customers are mixed about the water resistance of the battery. Some mention that it keeps the battery dry and safe, while others say that it was full of water. The battery has vents at the top and does not seal enough to keep gasses in.

    "I used it anyway for two lawnmower size batteries. Work good. Keeps the rain off of them." Read more

    "...Holds my large 100ah AGM battery. Please note it can fill with water, I drilled 4 small holes in the bottom corners of the box. now all is well," Read more

    "Hard sturdy plastic decorative design, sturdy strong and weatherproof" Read more

    "It works. Can't be submerged, but keeps battery out of the elements." Read more

    25 customers mention17 positive8 negative

    Customers are mixed about the stability of the battery. Some mention that it holds the battery securely in place, the hold down strap is very strong, and the tongue clips hold it loosely but securely. Others say that the top fit is not perfect and does not lock to place well when on, the interior compartment separator does not stay in place and the top does not sit well. It will not hang on its own and the strap does not keep fastened.

    "...Way more manageable. The wires go in easier, the straps are simple and workable, and the case is study...." Read more

    "...is not a standard size as a traditional battery, it helps to keep the battery in place...." Read more

    "...The extra storage room is nice but the divider doesn’t stay in place very well." Read more

    "...Comes with a baffle and strap for sturdy hold down and stability. I use them on my boat and hit some big waves." Read more

    24-31 size has divider, top vents and a strap
    5 Stars
    24-31 size has divider, top vents and a strap
    Its hard to beat the price point especially with the extras. Things to know about the 24-31 size box in Dec 2023 that I had a hard time figuring out exactly in the description (look at my photos).1. It does have a divider and some grooved slats, but the divider is not solid. It should help keep a size 24 battery from sliding around. I might put a small battery maintainer in the empty space.2. It comes with a strap, but its not obvious not to tighten it down (my pictures might help). It also comes with two mounting clamps that you screw into the side of your boat/whatever that I'm assuming you pass the strap through to the the entire thing secure. This is still a nice bonus because the didn't have to include it.3. It has top vents. Probably because Hydrogen is light and will fill the top of any space so thats why almost all battery cases have top vents. It has small plastic vent covers with a spacer that will probably break off over time leave open vent slats. But still nice try to reduce water entering.Still a great deal for what you get.
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    Customer image
    5.0 out of 5 stars 24-31 size has divider, top vents and a strap
    Reviewed in the United States on December 18, 2023
    Its hard to beat the price point especially with the extras. Things to know about the 24-31 size box in Dec 2023 that I had a hard time figuring out exactly in the description (look at my photos).

    1. It does have a divider and some grooved slats, but the divider is not solid. It should help keep a size 24 battery from sliding around. I might put a small battery maintainer in the empty space.

    2. It comes with a strap, but its not obvious not to tighten it down (my pictures might help). It also comes with two mounting clamps that you screw into the side of your boat/whatever that I'm assuming you pass the strap through to the the entire thing secure. This is still a nice bonus because the didn't have to include it.

    3. It has top vents. Probably because Hydrogen is light and will fill the top of any space so thats why almost all battery cases have top vents. It has small plastic vent covers with a spacer that will probably break off over time leave open vent slats. But still nice try to reduce water entering.

    Still a great deal for what you get.
    Images in this review
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    5 people found this helpful
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    Top reviews from other countries

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    Thomas Wolstenholme
    5.0 out of 5 stars Very Good Product
    Reviewed in Canada on July 2, 2021
    きっと自分は逸般人@北海道
    5.0 out of 5 stars 持ち運ぶってレベルじゃねーぞ(嬉)
    Reviewed in Japan on November 1, 2021
    20 people found this helpful
    Report
    Simon King
    5.0 out of 5 stars Arrived a day before delivery estimate. My marine leisure ...
    Reviewed in the United Kingdom on March 12, 2015
    Mark Hurst
    5.0 out of 5 stars Solid box at a great price
    Reviewed in Canada on July 8, 2023
    One person found this helpful
    Report
    釣りパパ
    4.0 out of 5 stars 丈夫ですね。
    Reviewed in Japan on December 25, 2022