The fire extinguisher in the Lectec battery module is an automatic suppression system designed to mitigate thermal runaway in lithium-ion cells. If a battery cell overheats and ignites, the thermal fuse activates at 180°C (356°F), triggering a 57mm canister containing a fire suppression agent. The canister utilizes a potassium nitrate-based oxidant (50%-58% content), which, upon activation, releases a gasified fire suppressant to cool and extinguish the flames. The system has a reaction delay of 68 milliseconds before full discharge and is designed to protect an area of ≥0.02 cubic meters, this compact unit ensures rapid containment of fires within the battery enclosure. With a 10-year operational lifespan, this built-in safety mechanism provides reliable, maintenance-free protection for Lectec kits.
