While you alluded you did not confirm if the battery contains metals and minerals aside from sodium, such as lithium. I ask because the Achilles Heal of battery technology's role in saving us from climate change is the availability of the mineral and metal components. A 2020 study by the Norwegian Geological Survey indicates that the mining sector will be able to produce enough of the metals and minerals so essential to electronic components today to make the transition to a sustainable, non-fossil fuel society, UNLESS new technologies such as batteries no longer rely on traditional materials that are growing increasingly expensive to mine as quality degrades and increasingly environmentally destructive.