Freight News, Logistics


TT Club urges action on high-risk batteries

[ September 22, 2026   //   ]

Thermal runaway is the main hazard from storing lithium-ion batteries in warehouses, says insurer TT Club in a new white paper published with UK P&I and Brooks Bell

Triggered by mechanical, electrical and thermal abuse, it can result in rapidly escalating fires, toxic and flammable gas emissions, potential re-ignition and explosion risk. Li-ion fires can burn at temperatures exceeding 1,000°C and differ fundamentally from conventional fires.

TT Club advises warehouse operators to take a comprehensive, risk-based approach. This includes clearly defining contractual responsibilities, particularly where value-added services such as charging, co-packing or repacking are offered. They should establish maximum inventory levels, address stagnant or abandoned stock and ensure subcontractors operate on terms consistent with their own liabilities.

Practical measures highlighted in the whitepaper include using a dedicated battery-storage area – or, preferably, a separate warehouse – designed with fire-resistant materials and clear access for fire-suppression systems. Facilities should maintain suitable storage temperatures, humidity and ventilation conditions, supported by early-warning systems able to detect temperature rises, gas emissions and smoke. Continuous thermal monitoring is recommended where feasible.

The paper also emphasises the importance of selecting fire-protection systems designed for the distinct behaviour of Li-ion battery incidents as traditional suppression methods may be less effective. TT Club strongly recommends early suppression fast response (ESFR) sprinklers, while in-rack systems can be effective for localised incidents and deluge systems are highly effective at cooling and extinguishing large fires. It also calls for regular staff training and emergency exercises, site plans for attending fire services, and plans for the safe management of potentially contaminated firefighting water following an incident. The paper notes that regulation and guidance remain inconsistent globally, making informed, proactive risk management essential.

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