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

Specification	Details
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