Hello, I just want to share some knowledge I acquired in the past few months.
The old 13,4 kWh Pack used 160 EIG e-PLB C020 20Ah cells.
They are arranged in 4 packs of 40 cells, mounted upright directly on the heatsink plates at the cooling channel in the middle of the battery. The BMS-boards are Mounted on the ends of these stacks. 2 of those stacks are above each other in either side if the battery casing. Cell swelling could cause problems with this layout, as it would press on the BMS boards and bend them, leading to cracks and other issues.
The 21,5kWh battery has a different layout . Cells are arranged very differently, and it's unknown which cells they used.
The cells are lying on their long sides in an upright position. It are unidirectional pouch cells with the cell tabs being on the left side of the battery pack. The 4 BMS boards are located here as well. There are 3 rows of cells from top to bottom. What's in the right side behind the cover I don't know yet, but I suppose there's either nothing (cells are not touching the cover) or the cells MAYBE touch the right battery cover (what I don't think, even with battery temps in the high 40°C range this side doesn't heat up that much). The Batteries temperature management is seen badly implemented by many, because the batteries overheat with repeated DCFC sessions. The cells aren't touching at least 4 sites of the battery (Bottom, Left, Front and Back), which means heat can only be dissipated either by the right side or the top plate, which only touches the top row of cells.
I think they MIGHT'VE used Farasis P32 cells, they are 230x160x6mm, which means they could easily fit 3 rows above each other with the "floors" the stacks are resting on in the roughly 50-51 cm height of the battery above the bottom pan. And that would explain the lower 17 kWh net that many here are getting better (they are rated at 33,3 Ah, which gives 19,6 kWh total, with reasonable buffer we end at ~16,5-17kWh)!
But that's only speculation.....
Greetings from Germany
Jonas
