Although the battery encompasses multiple safety mechanisms and is very safe, given the technical limitation of the Li-ion battery, there is an extremely low probability that the battery cells inside may encounter a thermal runaway.
A fully charged battery stores a tremendous amount of energy so that a thermal runaway may lead to severe consequences.
That's why most airlines and logistics operators consider high-capacity Li-ion batteries dangerous.
This fireproof battery box built for the Waydoo Power-flight battery is built tough to withstand high heat. The box also has a 21 litre water bag stored below the battery. If the battery was to ever catch fire, the purpose of the water bag is to contain the battery within the fireproof box from further thermal runaway and reduce the chances of any damage to property.