Solutions Why Us Certifications About FAQ Contact Request Quote
UL 5800 & UL 1487 Certified

Battery Thermal
Runaway Containment

Deployable, modular, variable-volume safety systems that contain battery fires — and the flammable & toxic gas effluent they produce. Trusted by the U.S. Air Force, DOT, and commercial airlines.

Request a Consultation Explore Solutions
U.S. Air Force
Department of Transportation
Commercial Airlines
Scroll
Our Solutions

Battery Safety &
Containment Devices

From modular containment units to full gas effluent management systems, Thermarrest delivers adaptable solutions for every battery risk scenario.

Battery Containment
Core Product

Battery Containment Units

Variable-volume containment systems that adapt to different battery sizes and configurations. Modular design allows rapid deployment in any environment.

  • Scalable from single-cell to multi-module
  • Rapid-deploy architecture
  • Field-serviceable components
Gas Effluent Management
Critical Safety

Gas Effluent Management

Addressing both flammable and toxic gas effluent from battery thermal runaway events. Integrated filtration and venting protect personnel and infrastructure.

  • Flammable gas neutralization
  • Toxic gas filtration & scrubbing
  • Controlled venting pathways
Consulting & Custom Engineering
Service

Consulting & Custom Engineering

Not sure what you need? Our team works with you to assess risk, define specifications, and engineer a containment solution tailored to your exact operational requirements.

  • Site risk assessment
  • Custom specification development
  • Compliance guidance (FAA, DOT, DoD)
What Sets Us Apart

Built Different. Built to Contain.

Thermarrest systems aren't off-the-shelf enclosures. They're engineered from the ground up for the realities of battery thermal runaway.

Deployability

Rapid-deployment design means systems are operational when and where you need them — from flightline to freight terminal.

Modular

Adaptable components let you configure systems to match your exact risk profile. Add, remove, or reconfigure as your needs evolve.

Variable Volume

Containment capacity that scales. Our variable-volume architecture handles everything from small cell failures to large-format pack incidents.

Gas Effluent Control

Uniquely engineered to address both flammable and toxic gas effluent — the hidden danger most containment systems ignore.

Compliance & Certifications

Certified to the Standards That Matter

Our systems meet and exceed the most demanding safety standards — the same ones trusted by the FAA, Department of Defense, and Department of Transportation to protect lives and critical infrastructure.

UL 5800

Standard for battery safety containment systems — covering structural integrity, thermal resistance, and re-ignition protection.

UL 1487

Fire containment — validated for suppressing and containing lithium-ion battery thermal runaway events and associated fire propagation.

FAA Alignment: Both UL 5800 and UL 1487 specifications are referenced by the FAA for battery safety compliance in aviation applications.

Certification Testing

Independently Tested

Third-party validated to UL standards

Thermarrest Team

100+

Deployments across
government & industry

About Thermarrest

Engineering Safety
Where It Matters Most

Thermarrest Safety Systems was founded on a singular mission: to contain the unpredictable and devastating effects of lithium-ion battery thermal runaway. As battery technology proliferates across military, transportation, and commercial sectors, the risk escalates — and so must the response.

Our team of engineers and safety professionals brings decades of experience in hazardous material containment, fire protection engineering, and compliance-driven product development. We work hand-in-hand with agencies like the U.S. Air Force, DOT, and commercial airlines to develop solutions that perform under the most demanding conditions imaginable.

Mission-Driven

Every product protects lives

Partnership-Focused

We consult, then we build

Evidence-Based

UL-certified, field-proven

Adaptable

Modular by design

Trusted By

Proven in the Field

"Thermarrest's modular containment system allowed us to retrofit our existing battery storage facility without a complete overhaul. The gas effluent management was a game-changer for our compliance requirements."

ML

Martin L.

Logistics Director, Government Contractor

"We evaluated several containment solutions. Only Thermarrest addressed both the thermal event AND the toxic gas byproduct. That dual protection is critical for our ground crew safety protocols."

SK

Sarah K.

Safety Officer, Commercial Aviation

"The consultation process was outstanding. They didn't just sell us a product — they analyzed our entire battery handling workflow and engineered a solution that fit seamlessly. True partners in safety."

RJ

Col. R. James (Ret.)

Former Base Safety Commander

Common Questions

Frequently Asked Questions

Can't find your answer? Reach out directly — our team responds to every inquiry.

Our systems are engineered for lithium-ion battery chemistries across all form factors — from small consumer-grade cells to large-format EV and energy storage modules. The variable-volume architecture means we can scale containment to match virtually any battery configuration.

While our primary clients are government agencies (Air Force, DOT), airlines, and commercial enterprises, we welcome inquiries from any business or individual with a legitimate battery safety need. All engagements begin with a consultation to determine the right solution.

It starts with a conversation. You tell us about your battery types, operating environment, and risk profile. If you already know your specifications, we'll provide a direct quote. If not, our engineers will assess your needs and recommend a tailored solution with pricing. No pressure, no commitment — just expert guidance.

Unlike standard fire containment, our systems integrate gas management pathways that capture, filter, and safely vent both flammable gases (like hydrogen) and toxic gases (like hydrogen fluoride) produced during thermal runaway. This dual-protection approach is a core differentiator and is critical for enclosed environments like aircraft hangars and transit facilities.

Yes. Our products meet UL 5800 and UL 1487 specifications, which are recognized by the FAA for battery safety compliance in aviation contexts. We can also provide documentation and support for specific agency approval processes as part of our consulting engagement.

Absolutely. Our modular, variable-volume architecture is designed for adaptability. Whether you need a compact unit for a vehicle bay or a large-scale system for a warehouse, we engineer the solution around your requirements — not the other way around.

Get In Touch

Ready to Discuss
Your Safety Needs?

Whether you need a custom containment solution, a compliance consultation, or a quote on a specific configuration — our team is ready. Tell us about your project, and we'll take it from there.

Location

address not currently available
city state and area code not currently available

Business Hours

Mon–Fri: 8:00 AM – 5:00 PM CT
Sat–Sun: Closed

Follow Us

Request a Consultation or Quote

Don't Wait for a Thermal Event to Find Your Gaps.

Let our team assess your battery safety requirements and engineer a containment solution that performs when it matters most.

Schedule a Consultation
Message sent successfully!