{"product_id":"attwood-vented-battery-box-for-group-29-31-batteries-large-black-acid-resistant-polypropylene-with-350-lb-strap","title":"attwood Vented Battery Box for Group 29\/31 Batteries — Large Black, Acid-Resistant Polypropylene with 350 lb Strap","description":"\u003cstrong\u003eAttwood 9084-1 is a heavy-duty, vented battery box engineered to securely house Group 29 and Group 31 batteries aboard boats and RVs while meeting marine safety standards.\u003c\/strong\u003e\n\n\u003cp\u003eThis vented battery enclosure combines chemical-resistant construction, an engineered vent system, and a high-strength hold-down strap to protect batteries in demanding marine and recreational environments. Built from acid-resistant polypropylene and tested across a wide temperature range, the box balances durable protection with user-focused features like molded instructions and oversized carrying handles. It’s designed to reduce gas accumulation, shed water intrusion, and anchor large batteries reliably for OEM or aftermarket installations.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the Attwood 9084-1 keep batteries safe on a boat or RV?\u003c\/h3\u003e\n\u003cp\u003eThe box uses a vented lid and upward-facing vents to help channel battery gases safely away while limiting water entry. Thick-walled, impact-tested polypropylene protects the battery from spills, impacts, and corrosion, and the integrated strap secures the battery against movement during rough conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVented lid with four cable entry points to route leads neatly.\u003c\/li\u003e\n  \u003cli\u003eAcid-resistant polypropylene resists corrosion from battery acid.\u003c\/li\u003e\n  \u003cli\u003eImpact-tested from -20°F to +120°F for extreme environments.\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty strap rated to 350 lbs. for robust anchoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this box fit my Group 29 or Group 31 battery?\u003c\/h3\u003e\n\u003cp\u003eYes—the interior dimensions accommodate larger batteries common in marine and RV systems. The box supports batteries up to 9-3\/4 inches tall and provides sufficient length and width for Group 29 and Group 31 sizes, while leaving space for cable routing and ventilation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInside dimensions: 15-7\/16\" L × 6-15\/16\" W × 9-3\/4\" H.\u003c\/li\u003e\n  \u003cli\u003eOutside dimensions: 18-7\/8\" L × 9-1\/4\" W × 10-1\/4\" H.\u003c\/li\u003e\n  \u003cli\u003eFour cable openings to fit common battery terminal layouts.\u003c\/li\u003e\n  \u003cli\u003eDesigned specifically for Group 29 and 31 battery profiles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and daily use?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward with included mounting hardware and a purpose-built hold-down strap. Large rolled-edge handles make carrying and positioning simpler, and molded-in instructions on the box offer quick reference for correct setup.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComes with mounting hardware for fast attachment to decks or compartments.\u003c\/li\u003e\n  \u003cli\u003e40-inch strap included; rated for 350 lbs. of force.\u003c\/li\u003e\n  \u003cli\u003eLarge handles simplify transport and placement aboard a vessel or RV.\u003c\/li\u003e\n  \u003cli\u003eMolded-in instructions reduce guesswork during installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDoes this meet marine safety and regulatory standards?\u003c\/h3\u003e\n\u003cp\u003eThe Attwood 9084-1 is manufactured to align with established marine safety criteria for onboard battery enclosures. Meeting ABYC E-10 and USCG specifications makes it suitable for both factory installations and aftermarket replacements where compliance matters.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConforms to ABYC Standard E-10 for battery containment.\u003c\/li\u003e\n  \u003cli\u003eMeets USCG Specification 183.420 requirements.\u003c\/li\u003e\n  \u003cli\u003eStrap strength far exceeds minimum Coast Guard anchoring tests.\u003c\/li\u003e\n  \u003cli\u003eVented design reduces trapped gases to improve onboard safety.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Attwood 9084-1 is aimed at boat owners, RV enthusiasts, marinas, and professional installers who need a dependable, standards-compliant battery enclosure for larger Group 29 or 31 batteries. It’s a good choice when corrosion resistance, secure hold-down capability, and built-in ventilation are priorities—particularly for users who require a robust, long-lasting solution that simplifies wiring and meets regulatory expectations.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the Attwood 9084-1 handle exposure to saltwater conditions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The acid-resistant polypropylene and corrosion-resistant design help it withstand marine environments, though routine rinsing and maintenance are recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the strap included strong enough for rough seas?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The supplied 40-inch strap is rated to 350 lbs., nearly four times USCG minimums, providing robust securing in rough conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"attwood","offers":[{"title":"Default Title","offer_id":48086200320158,"sku":"B0000AY9DQ","price":42.01,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/attwood-front-view-battery-box.jpg?v=1785889602","url":"https:\/\/northtrailauto.ca\/products\/attwood-vented-battery-box-for-group-29-31-batteries-large-black-acid-resistant-polypropylene-with-350-lb-strap","provider":"North Trail Auto","version":"1.0","type":"link"}