HOT-STOP® 'L' Evo Phone Aircraft Lithium-Ion Battery Fire Containment Bag

For proper readiness, the HOT-STOP® ‘L’ smartphone containment bag should be stored unzipped with the pull strap positioned over the hook-and-loop closure. This staging method allows the bag to be deployed quickly during a lithium-ion battery incident involving a mobile phone or other small electronic device.

Because the bag is made from flexible fire-resistant materials, it can be stored compactly in cockpit or cabin emergency equipment compartments. Operators should periodically inspect the zipper and apply a light beeswax lubricant to ensure smooth operation.

To deploy the bag, crew members should retrieve the containment kit and put on protective gloves if available. The overheating or damaged smartphone should then be carefully placed inside the bag beneath the internal baffle system.

Next, pull the red “PULL” tab to close the hook-and-loop seam and zip the bag fully until the zipper reaches the stopper. Properly sealing the bag helps contain heat, flames, and smoke generated during a lithium-ion battery thermal runaway event.

Yes. HOT-STOP® ‘L’ fire containment bags are backed by a lifetime replacement warranty if the bag is deployed during an actual lithium-ion battery thermal runaway incident.

After such an event, operators must complete an incident report and return the used bag to the manufacturer for evaluation and replacement. This warranty program demonstrates the manufacturer’s confidence in the bag’s fire containment capabilities.

The HOT-STOP® ‘L’ containment system has been evaluated through burn testing conducted by FAA-registered laboratories. Official burn test certificates and supporting documentation are available from the manufacturer.

These tests verify the bag’s ability to withstand the extreme heat, pressure, and smoke associated with lithium-ion battery fires. Operators may reference this documentation during safety reviews or compliance audits.

The HOT-STOP® ‘L’ smartphone containment bag is constructed with multiple layers of fire-resistant fabric combined with an airtight zipper system and internal baffles. These design elements help contain flames, heat, and smoke generated by a thermal runaway event.

Once sealed, the bag limits oxygen exposure and restricts the escape of toxic fumes into the aircraft cabin. Proper closure of the zipper and hook-and-loop seam is essential for maintaining containment performance.

Yes. HOT-STOP® ‘L’ containment bags are widely used by airlines, corporate flight departments, and other aviation operators as part of their lithium-ion battery fire mitigation procedures.

The system is designed to support onboard safety programs that address the risks associated with portable electronic devices, particularly smartphones and other lithium-powered devices carried by passengers and crew.

Yes. HOT-STOP® ‘L’ containment bags incorporate shielding materials that can limit cellular and radio frequency signals from devices placed inside the bag. This feature helps prevent a damaged smartphone from attempting to reconnect to cellular networks, which can generate additional heat during a battery failure event.

Operators should periodically inspect the zipper teeth, zipper stitching, pull-tab strap, and outer shell for signs of wear, cuts, or abrasions. If any damage is found that could compromise the bag’s sealing ability or structural integrity, the bag should be removed from service and returned for repair or replacement. Storage pouches and carrying components should also be checked for damage.

The containment bag is designed for quick and intuitive deployment during an emergency. However, operators are encouraged to review the manufacturer’s Standard Operating Procedures (SOP) videos and guidance materials. Many aviation organizations incorporate HOT-STOP® ‘L’ procedures into crew emergency equipment training programs so personnel can respond quickly to a lithium-ion battery incident.

Maintenance requirements are minimal. Operators should conduct regular visual inspections and occasionally lubricate the zipper with beeswax to maintain smooth operation. The bag should be stored clean, dry, and unzipped so it remains ready for immediate deployment.

HOT-STOP® ‘L’ containment bags are designed for single-event use when deployed during an actual lithium-ion battery thermal runaway. After such an event, the bag must be returned under the lifetime replacement warranty program. If the bag has not been used in an incident and remains undamaged, it may continue to remain in service or be used for training demonstrations.

The smartphone containment bag is widely used in commercial, business, and military aviation, as well as other safety-sensitive environments where lithium-powered mobile devices are present. It helps operators mitigate the risks of overheating in smartphones and other small electronics carried by passengers or crew.

Because fire containment bags are typically classified as loose tools or onboard safety equipment, a Certificate of Conformance (CofC) is not normally required. However, a CofC can be issued upon request if an operator requires documentation for internal compliance or procurement records.