---
product_id: 1244664
title: "NOCO Snap-Top HM318BKS Battery Box, Group 24-31 12V Outdoor Waterproof Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries"
brand: "noco"
price: "¥3634"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/1244664-noco-snap-top-hm318bks-battery-box-group-24-31-12v
store_origin: JP
region: Japan
---

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

**Brand:** noco
**Price:** ¥3634
**Availability:** ✅ In Stock

## Summary

> 🔒 Secure Your Power with Style!

## Quick Answers

- **What is this?** NOCO Snap-Top HM318BKS Battery Box, Group 24-31 12V Outdoor Waterproof Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries by noco
- **How much does it cost?** ¥3634 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/1244664-noco-snap-top-hm318bks-battery-box-group-24-31-12v)

## Best For

- noco enthusiasts

## Why This Product

- Trusted noco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Snap-Top Lid:** Securely fastens to prevent accidental openings.
- • **UV Resistant:** Protects your battery from harmful sun exposure.
- • **Universal Fit:** Designed to accommodate Group 24-31 batteries seamlessly.
- • **Lightweight Design:** Weighs only 2.7 pounds for easy transport.
- • **Heavy-Duty Construction:** Built to withstand the rigors of outdoor adventures.

## Overview

The NOCOSnap-Top HM318BKS Battery Box is a robust, waterproof solution for safely storing Group 24-31 batteries. Weighing just 2.7 pounds, this impact and UV resistant box is perfect for marine, automotive, RV, and travel trailer applications, ensuring your power source is protected and ready for adventure.

## 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. Other commonly used search terms: battery box,marine battery box,battery boxes marine,rv battery box,boat battery box,waterproof battery box,trailer battery box,trolling motor battery box,battery box strap,12v battery box,battery boxes,battery storage box,small battery box,rv battery box strap,battery box marine,car battery box,smart battery box,noco battery box,12 volt battery box,camper battery box,battery box rv trailer,6 volt battery box,solar battery box,heavy duty battery box,battery box 12v,6v rv battery box,6 volt battery box for rv,box battery,6volt battery box,6v battery box,small battery box 12v,snap top battery box,big battery box,outdoor battery box,battery box trailer,battery box for rv,waterproof 12v battery box,trolling battery box,battery box vent,vented battery box,battery box for camper,rv battery box lock,battery box deep cycle,27 battery box,group 27 battery box,battery box 27,battery box group 27,24 battery box,group 24 battery box,battery box 24,battery box group 24,31 battery box,group 31 battery box,battery box 31,battery box group 31

## Features

- Fit Type: Universal Fit.Fit Type: Universal Fit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | NOCO |
| Brand | NOCO |
| Model | HM318BKS |
| Item Weight | 2.7 pounds |
| Product Dimensions | 14 x 7.1 x 9.6 inches |
| Country of Origin | USA |
| Item model number | HM318BKS |
| Is Discontinued By Manufacturer | No |
| Exterior | Polished |
| Manufacturer Part Number | HM318BKS |
| Special Features | Impact and UV Resistant, Snap-Top Lid That Fastens To Base, Battery Box For Group 24, 27 And 27 Batteries, Heavy-Duty Plastic Construction |
| Voltage | 12 Volts |

## Product Details

- **Brand:** NOCO
- **Color:** Black
- **Material:** Reinforced Plastic
- **Special Feature:** Battery Box For Group 24, 27 And 27 Batteries, Heavy-Duty Plastic Construction, Impact and UV Resistant, Snap-Top Lid That Fastens To Base
- **Style:** Group 24-31

## Images

![NOCO Snap-Top HM318BKS Battery Box, Group 24-31 12V Outdoor Waterproof Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries - Image 1](https://m.media-amazon.com/images/I/817kIBC-riL.jpg)
![NOCO Snap-Top HM318BKS Battery Box, Group 24-31 12V Outdoor Waterproof Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries - Image 2](https://m.media-amazon.com/images/I/812dwSKIcjL.jpg)
![NOCO Snap-Top HM318BKS Battery Box, Group 24-31 12V Outdoor Waterproof Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries - Image 3](https://m.media-amazon.com/images/I/81OiozbfogL.jpg)
![NOCO Snap-Top HM318BKS Battery Box, Group 24-31 12V Outdoor Waterproof Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries - Image 4](https://m.media-amazon.com/images/I/81NFV+16PWL.jpg)
![NOCO Snap-Top HM318BKS Battery Box, Group 24-31 12V Outdoor Waterproof Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries - Image 5](https://m.media-amazon.com/images/I/81xPuAin2YL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: does it come with a strap**
A: Whether or not this box comes with a strap seems to be variable to mildly cloudy.  I ordered 4 boxes.  I received 4 bottoms, 4 tops, but only 3 straps.  The box that contained no strap was an unmolested, factory-sealed box... so... the manufacturer has quality control "issues" in its shipping department.

**Q: What is the outside dimension at the bottom of the box?  I need it to fit inside my 8 inch mounting rails.**
A: 14" long by 7 1/4" wide. does that help ya?

**Q: Are there vent holes in the top of this box? Don'twant water to get in to ruin the battery.  If it does, can someone recommend one without vent holes?**
A: As already noted, venting of the boxes comes via the cable entry points, same as almost every battery box on the market. I have had a similar design for seven years on an off-road trailer and never had a problem. Purchasing these for inside the garage where I store the battery and keep on a battery minder during the winter.

**Q: Would this case fit a group 35 optima yellowtop? If not, any recommendations for one that will are appreciated.**
A: It will not fit. Suggest you check the optima yellow top website. They may have some suggestions on boxes that will fit.

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**Shop now:** [https://www.desertcart.jp/products/1244664-noco-snap-top-hm318bks-battery-box-group-24-31-12v](https://www.desertcart.jp/products/1244664-noco-snap-top-hm318bks-battery-box-group-24-31-12v)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-24*