attwood Group 27 Vented Battery Box with 40" Hold-Down Strap — Black, Acid-Resistant, ABYC/USCG Compliant

The Attwood 9067-1 PowerGuard is a vented, acid-resistant battery box with a heavy-duty hold-down strap engineered to protect and secure Group 27 marine batteries.

Built for boats, pontoons, and RVs, this OEM-style battery enclosure combines compliance, corrosion resistance, and practical handling features to keep your onboard battery stable and contained. Constructed from impact-tested polypropylene, the box meets ABYC E-10 and USCG 183.420 standards and is sized to fit common Group 27 batteries while providing ventilation and easy cable routing.

How does the 9067-1 protect batteries in harsh marine environments?

This box uses acid-resistant polypropylene to shield batteries from splashes and corrosive conditions while allowing harmful gases to escape. Reinforced edges and molded handles improve durability and handling, so the box resists wear from repeated use and exposure.

• Acid-resistant polypropylene construction for chemical and corrosion protection
• Vented lid for controlled gas evacuation
• Molded instructions and rolled-edge handles for safe handling and installation

Will this box fit my Group 27 battery and allow tidy cable management?

The interior dimensions (13.06 x 6.9 x 10.5 inches) are sized for most Group 27 batteries up to 10.5 inches tall. Four enlarged cable openings let you route power and ground leads without forcing cables through tight gaps, reducing abrasion and strain.

• Interior fits commonly used Group 27 batteries up to 10.5" high
• Four large cable ports for organized wiring and reduced wear
• Spacious interior allows room for terminal protection and accessory routing

How secure is the battery once mounted and fastened?

The included 40-inch hold-down strap is rated to resist 350 pounds of force, offering far more retention than required by USCG rules. Combined with the molded mounting points and supplied hardware, the system locks the battery in place through normal boating shock and motion.

• 40" heavy-duty strap rated at 350 lbs for robust retention
• Molded mounting points and included hardware for a complete install
• Design conforms to ABYC and USCG OEM hold-down specifications

How does the vented design balance safety and water protection?

The lid's venting channels let flammable hydrogen and other gases exit the box while the cover design limits water intrusion from waves or spray. This balance helps protect battery life and reduce hazard potential without exposing terminals to direct water contact.

• Integrated ventilation allows gas dispersion while minimizing water entry
• Protective cover design reduces splash exposure to terminals
• Venting positioned to direct gases away from enclosed compartments

Who this is for: the Attwood 9067-1 PowerGuard battery box is aimed at boat owners, mariners, and RV users who need a durable, regulation-compliant enclosure for a Group 27 battery. It's a practical choice for anglers, weekend boaters, fleet operators, and anyone upgrading or replacing an OEM battery box who wants corrosion resistance, secure mounting, and cleaner cable organization.