Introduction to Thermal Runaway

Thermal runaway in a lithium-ion battery is a dangerous process where a cell overheats and the temperature escalates uncontrollably, potentially leading to fire, explosions, and the release of toxic gases. Initially, you might see signs like a battery becoming extremely hot to the touch or swelling and bulging, followed by venting of smoke or gas. If the situation progresses, the battery casing may rupture, releasing a burst of hot gases, flames, and potentially molten metal.