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NOCO Snap-Top HM318BK Battery Box, Group 24-31 12V Outdoor Waterproof Battery View larger
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NOCO Snap-Top HM318BK Battery Box, Group 24-31 12V Outdoor Waterproof Battery

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Detailed Specifications

NOCO HM318BK 

Group 24–31 Snap‑Top Battery Box – 12 V Outdoor Waterproof Enclosure

The NOCO HM318BK  battery box is a durable, all-weather solution for housing a single Group 24 to 31 battery.Perfect for marine, RV, trailer, generator, and automotive applications, it offers superior battery protection, secure mounting, and corrosion-resistant materials built to perform in harsh environments.

Features

Constructed from UV-stabilized, injection-molded polymer, the HM318BK withstands extreme temperatures and resist impacts, oil, gas, and battery acids . Its adjustable divider accommodates various battery sizes (group 24–31) snugly, and the snap-top cover secures with locking tabs plus a 42″ strap to prevent loosening under vibration

Advanced Options

Vented ports in the lid allow safe dissipation of hydrogen, while the integrated reservoir collects any spilled electrolyte. The design meets strict marine and yacht safety standards, making it ideal for both freshwater and saltwater environments .

Product Key Features

    •  Rugged, impact- & UV-resistant polymer housing, functional down to –20 °F

    •  Snap-top lid with dual locking tabs and 42″ hold-down strap

    •  Fully vented to safely release hydrogen and acid vapors

    •  Internal acid reservoir protects against leaks

    •  Marine-certified: meets USCG Code 183.420 & ABYC E‑10.7

    •  Reinforced handles for easy carrying without cracking

Reliability & Performance

Whether used in freezing temperatures or scorching heat, the box maintains structural integrity and battery containment. The venting and leak-reservoir reduce corrosion and hazards. The reinforced handles allow easy transport and installation, and precise internal dimensions keep batteries stable, quiet, and chemically isolated

Key Features (Bullet List)

  • Designed for Group 24–31 12 V batteries

  • Snap-top lid with locking tabs and 42″ strap

  • Adjustable divider insert for secure battery fit

  • Fully vented lid with multiple cable access points

  • Internal reservoir for acid containment

  • UV, impact, oil, gas, and acid-resistant housing

  • Reinforced handles for durability

  • Meets USCG 183.420 & ABYC E-10.7 marine standards

SpecificationDetails
Model Number HM318BK
Type Group 24–31 Snap-Top Battery Box
Battery Sizes Supported Group 24 to Group 31 (12 V)
Internal Dimensions 14.0″ L × 7.1″ W × 9.6″ H
External Dimensions 17.6″ L × 10.0″ W × 10.7″ H
Weight ~4.0 lbs
Strap Length 42″
Material UV‑stabilized, impact-resistant polymer
Environmental Resistance –20 °F; resistant to UV, oil, gas, acid
Ventilation Fully vented lid with cable ports
Acid Containment Integrated internal reservoir
Handles Reinforced, heavy-duty
Certifications USCG 183.420, ABYC E‑10.7
Made In USA

  • All packages are shipped same day if the order is placed before 3PM CST

    We use UPS/FedEx to ship the packages with different service levels offered by UPS/FedEx

    Overnight Shipping take 1 business day
    Expedited Shipping take about 2-3 business days
    Ground shipping take about 3-5 business days

    You can select the desired service level at Checkout and we will make sure the package is shipped as per the selected service level.

  • We Accept

    i) PayPal
    ii) All Credit & Debit Cards
    iii) Purchase Orders
    iv) Check
    v) Bank Transfer/ACH/Wire Transfer

    To process the order through Paypal/CC, you can simply checkout and process the payment.

    If you want to issue us Purchase Order/Check/Bank Transfer, Please contact us at the following details

    Call: 469.458.9636
    Email: sales@dcsupplies.net

  • If you have any queries, please contact us at the following details and we will be happy to help

    Call
    469.458.9636
    469.458.9638

    Email
    sales@dcsupplies.net

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