Passive fire protection for lithium-ion battery risks

Electrical Power & Protection

October 2025 Electrical Power & Protection

In response to the growing threat posed by lithium-ion (Li-ion) battery fires, a breakthrough passive fire protection solution is now available in South Africa. Developed in Germany and now distributed locally through PyroBrand, this innovative technology, dubbed PyroBubbles, represents a major leap forward in fire safety. The engineered extinguishing and insulating material, developed by the Genius Group in Germany, has been scientifically proven to suppress and contain thermal runaway events in Li-ion batteries without the need for active intervention.

“Li-ion battery fires are unlike conventional fires. They burn hotter and longer, and often reignite, posing a significant challenge to standard firefighting methods,” says Michael van Niekerk, CEO of ASP Fire. “With this solution now available locally, South Africa joins the global vanguard in adopting smarter, more preventative strategies.”

The proprietary material, comprised of lightweight, non-combustible glass granules, creates an inert envelope around battery cells or modules. This passive approach suppresses flames, absorbs heat and drastically reduces the release of toxic gases. Certified to the highest European and South African standards, including SANS 11820 for non-combustibility, this fire-rated material performs under extreme conditions, with thermal stability up to 1050°C.

Clyde Becker, director of PyroBrand, explains: “This is more than just fire protection, it is about risk mitigation, environmental safety and long-term resilience. The material has been rigorously tested by independent South African laboratories, confirming its ability to adsorb over 85% of the toxic vapours released during a battery thermal event. It is a game changer for logistics, storage and industrial safety.”

The material is also used in Genius Boxes, specialised UN-certified containers for the safe storage and transport of Li-ion batteries, including those that are damaged or defective. These ready-to-use boxes are internally lined with the insulating granules, providing a secure and self-extinguishing environment in the event of a fire. Ideal for battery manufacturers, logistics providers, EV fleet operators and facilities housing energy storage systems, the passive protection system is already in use across Europe and is now set to transform South Africa’s fire safety landscape.

“In a world increasingly reliant on battery technology, our fire protection strategies must evolve,” says van Niekerk. “At ASP Fire, we are committed to providing our clients with the most advanced, certified and environmentally responsible solutions available today.”

For more information contact Michael van Niekerk, ASP Fire, +27 11 452 2169, [email protected], www.aspfire.co.za

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Passive fire protection for lithium-ion battery risks

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