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
The U.S. Department of Energy's Office of Scientific and Technical Information
www.osti.gov