Bell 407GX: HOT-STOP® ‘L’ Lithium-Ion Battery Fire Containment Bags

Fire containment bags are essential safety tools that help mitigate the risks posed by lithium-ion battery-powered devices experiencing thermal runaway. These events can release toxic smoke, intense heat, fire, and even explosive forces inside the aircraft cabin, creating a severe in-flight hazard. By isolating the device in a sealed fire containment bag, crews can prevent the spread of hazardous emissions and protect passengers, crew, and aircraft systems from a dangerous lithium-ion battery fire.

HOT-STOP® ‘L’ containment bags are deployed through a simple six-step process that includes removing the kit, donning gloves, placing the device inside, sealing the hook-and-loop closure, and securing the zipper. Once sealed, the bag is engineered to contain fires, explosions, and 100% of toxic smoke from lithium-ion battery-powered devices tested up to 20,000 mAh. No water is required for activation, though operators may add water if following FAA SAFO guidance.

HOT-STOP® ‘L’ bags are designed for rapid response, allowing crews to isolate a device in roughly six swift steps – even under emergency conditions. Their intuitive layout and minimal preparation requirements help reduce reaction time and limit exposure to growing heat or smoke during a lithium-ion battery fire event.

No. HOT-STOP® ‘L’ containment bags are engineered to suppress and contain lithium-ion battery fires without relying on water, foam, or chemical agents. While operators may choose to add water in accordance with FAA SAFO recommendations, the containment system is fully effective on its own and requires no external suppression media.

HOT-STOP® ‘L’ bags are available in multiple sizes to accommodate everything from small personal electronics to larger aviation devices. Supported items include laptops, tablets, iPads, smartphones, e-cigarettes, portable ELTs, battery banks, chargers, and all-in-one computers. Each bag is engineered to maintain structural integrity under high thermal loads, ensuring effective suppression even for larger-capacity battery packs.

During thermal runaway, lithium-ion batteries can release highly toxic gases and carcinogenic smoke. HOT-STOP® ‘L’ containment bags are engineered to trap 100% of these emissions, preventing dangerous fumes from entering the aircraft cabin. This airtight containment helps protect passengers and crew from smoke inhalation and airborne contaminants during an onboard fire event.

HOT-STOP® ‘L’ bags are lightweight, flexible, and easy to stow in compact cockpit or cabin locations where rapid access is crucial. Their pliable, fire-resistant materials allow them to be stored in confined areas, and they should always remain unzipped and ready for immediate deployment. Crew members should position each bag in an easily accessible area to ensure the fastest possible response.

Yes. HOT-STOP® ‘L’ bags are widely used across commercial airlines, business aviation, and helicopter operations. Their compact footprint and flexible construction make them especially well-suited for rotorcraft, where limited cabin space heightens the importance of quickly and effectively containing lithium-ion battery fires.

HOT-STOP® ‘L’ fire containment bags have no shelf-life restrictions and require only minimal periodic maintenance. Routine care consists of simple visual inspections and occasional zipper lubrication; no recertification is required. This low-maintenance design ensures long-term readiness for aircraft operators.

HOT-STOP® ‘L’ bags are independently tested FIREPROOF by an FAA-registered laboratory and built using multiple layers of high-temperature materials surrounding a felt core with a 3,200°F melting point. Dual outer layers rated to 2,080°F help dissipate heat, while a military-grade airtight zipper prevents toxic smoke, gases, molten metal, and particulates from escaping. These engineering advantages – combined with a proven track record of successful deployments – make HOT-STOP® ‘L’ one of the most trusted solutions for aviation fire containment.

Yes. All HOT-STOP® ‘L’ fire containment kits undergo comprehensive independent Burn Certification, covering the containment bag, protective gloves, and stowage components. These certifications verify the product’s ability to withstand extreme thermal conditions and support proper lithium-ion battery fire suppression in aircraft environments.

HOT-STOP® ‘L’ offers a lifetime replacement warranty for aviation customers when a bag has been used to contain a thermal runaway device. Upon submitting an aviation incident report, operators receive a replacement at no charge, ensuring they always have a ready-to-deploy fire containment solution on board.