From fire risk to safety in 30mm

As the adoption of lithium-ion (Li-ion) battery systems continues to rise in South Africa, so too does the risk of electrical fires.

“Li-ion batteries pose unique fire risks due to their chemical composition and the environments in which they are used,” explains Eldon Kruger, marketing director at Pratley.

“Overheating, electrical faults, and poor ventilation are all factors that can lead to fires. However, with appropriate battery room construction and fireproofing, these risks can be significantly mitigated,” he continues.

Li-ion battery fires often stem from thermal runaway, a chain reaction triggered by overcharging, physical damage, or internal short circuits. The flammable electrolytes in these batteries and the heat generated in enclosed spaces exacerbate the danger. Electrical malfunctions such as faulty wiring or overloaded circuits further increase the risk, especially in facilities where room fireproofing has been neglected.

Enter Pratliperl – a non-combustible, ultra-lightweight aggregate that can be mixed with cement and applied as a plaster or screed to walls, floors, and ceilings. When applied at just 30mm thickness, Pratliperl delivers a two-hour fire rating, as certified by the South African Bureau of Standards (SABS).

“What sets Pratliperl apart from traditional fireproofing materials is that it releases no toxic smoke or fumes during a fire,” notes Kruger. “This not only protects infrastructure, but also provides a safer environment for anyone in or near the affected area.”

The product is designed for both new and existing battery room setups, offering a cost-effective fireproofing solution that integrates easily with current systems. “We recommend plastering battery rooms with Pratliperl and sealing all cable and conduit wall penetrations to prevent fire from spreading through gaps,” Kruger says. “When combined with proper ventilation and extraction fans, the result is a comprehensive fire safety strategy.”

In the long term, Pratliperl helps to maintain the structural and electrical integrity of battery rooms. It slows the spread of fire, protects adjacent equipment and infrastructure, and reduces downtime and costs associated with fire-related damage. “With Pratliperl, facility owners and engineers can take proactive steps to prevent disaster before it strikes,” Kruger emphasises.