that pack looks like it would immediately explode in an accident.
- there will be huge shear forces on the vertical bolts and stacked cells during braking and turning
- cell clamping force is insanely uneven. >1cm increase in stack height from bolts at edge to center. 100% chance that at least one of these cells shorts out or puffs in the next two years.
- no gaps or anything between cells to account for cell expansion, debris, trapped air...
- what happens when one of these cells catches fire? they included no fire retardants and did not add vents or anything.
- horizontal support bar has been removed. the case will likely warp across the center and might fail. could they not afford a single hour of a mechanical engineer's time?
- FDM busbar holders? are they serious? at least it's better than plywood
- drill press through cell terminals: don't even need to say why this process is awful besides being nonscalable
- working on a live pack without any PPE
- metal tools left sitting on top of bare pouch cells during assembly. what other foreign object debris will be in this pack?
- no cooling whatsoever, no clear picture what chemistry is being used here. how is one of the cells in that rear stack supposed to cool off when it has 25 cells on all other sides?
i hope this buyer has fire insurance and sure hope they paid less than $5k.
edit: whoops, they're charging $14,000 euros.