What is the biggest risk associated with batteries in aviation?

The biggest risk associated with batteries in aviation is thermal runaway. This phenomenon occurs when a battery cell experiences a failure that leads to an uncontrollable increase in temperature. During thermal runaway, the heat generated within the battery surpasses the heat that can be dissipated, resulting in further reactions that generate even more heat. This cycle can lead to combustion or explosion, posing significant safety hazards.

In aviation, the consequences of thermal runaway can be catastrophic, as a fire or explosion in the aircraft's battery system can compromise safety for both passengers and crew. This risk is heightened in environments where batteries are charged and discharged frequently, making effective battery management and monitoring systems critical for ensuring aviation safety.

Other risks like battery leakage, electrical shorts, and weight limitations, while relevant, do not present the same immediate and severe threats to flight safety that thermal runaway does. Understanding the implications of thermal runaway is essential for developing safety protocols and battery management practices in the aviation industry.