This is a kludge not an engineering solution.
So they put a volatile battery in a strong box (pressure vessel) and connect it to the outside air via a valve. This valve will be exposed to moisture, whatever materials the battery may vomit and freezing temperatures. It may not be called on to operate for years. Does such a valve exist? Has one been certified for this duty?
Methinks they may be creating a bomb.
On the other hand I may just be paranoid and dumb
