looking at a pic, it looks designed for large cells but not a lot of current per cell. But since it is stationary you can always throw more cells at it (not true for a car).
The inductors would have to be much larger (even with high frequency switching) to get the full output capacity of that battery (i.e. hundreds of amps of dc bias). Power density is critical in a vehicle. Still a BMS looks trivial by comparison. And a connector bar per cell is going to be far more affordable and efficient than a boost converter per cell. ( I sort of went through this parallel exercise when I was considering supercaps, and decided it was a bad idea)
