Finishing up the steering column and starting to design the battery boxes.
While it is true that any connected set of cells forms a battery, it is typical in EV discussions to refer to a cell group which is only part of the whole system and forms a unit with housing and internal wiring - particularly one which is interchangeable with other groups - as a "module", not a battery. A group of modules assembled in an enclosure with a common electrical connection is a "pack"; on that basis you have a battery consisting of a front pack and a rear pack, each pack consisting of several modules.
When the structure was first shown and battery module mounting was discussed, my comment was that the design didn't allow useful space for modules in the front, largely because of the diagonal bracing (which in turn is there due to the unnecessary but aesthetically desired inboard suspension position). I see that the solution is to put the modules way out front; while making the modules part of the crush structure is not ideal, my first thought was that is undesirable from a mass distribution viewpoint. It is, on the other hand, part of the fine DIY conversion tradition of stuffing bits of battery way out in the nose to fit it all in. At least they're not filled with lead.
The rest of the modules stack in what is normally engine space, which is the logical location (and the best place for the mass, front to rear)... just like an original Tesla Roadster. The rearward (of the axle) motor mounting enables this, again as in the Roadster. The only unfortunate thing is that they need to be stacked so high to fit in, so the centre of mass of this performance car will be higher than a sedan of the same size would be with an underfloor battery... I don't know of any good way around that, because no one wants to perch the occupants up on top of a layer of battery modules in this style of car.
At first it sounded like these modules were going to be mounted without any enclosure, and I was glad to see that they're going in boxes - some DIY builders seem to believe that no enclosure at all is required. The boxes are to be some sort of plastic sheet; I find it interesting that every EV manufacturer decides that the cost and weight of a metal enclosure is justified, but most DIY builders don't.
If the cables go through the box without interruption, the fitting would be a "grommet" or "feed-through bushing"; if a connector is installed in the box wall, it's a bulkhead connector.