They need to be transported in inclosed mental containers that are in a vacuum. No air in side. No air no fire.
Unfortunately, my understanding is that won't work, as lithium batteries do not require "external" air/oxygen for combustion
Oxygen Release Degradation in Li–Ion Battery Cathode Materials: Mechanisms and Mitigating Approaches (Journal Article) | OSTI.GOV
Widespread application of Li–ion batteries (LIBs) in large–scale transportation and grid storage systems requires highly stable and safe performance of the batteries in prolonged and diverse service conditions. Oxygen release from oxygen–containing positive electrode materials is one of the...
