OK, thank you, I'll update my cellcount and will document my progress in building my 'first' device.
I have pv already (SMA) and want to sell less and use more power
( I saw you using SMA, too )
As for the 'accepted' manner, I have 2 Imax B6AC v2 (which I'm using testing and loading the larger modules (as of now only bycicle 7s modules I do not want to take apart) and
two Opus chargers, one Bc-4000 expert. For now, I don't know the path to take, either get other 7s modules coming in a perfect-to-reuse packing of 288wh or / and having my own-build modules (very much looking like yours).
For that I would be interested in using a SMA Sunny-Island (I read in works with your bms, too).
Have to mention I saw some ( a lot ) of Jehu's videos. In one of them he mentioned your project and the ONE fault using the best cells for module one, the next best for module too... I agree to him, and plan to select my module with 'take the best cell and the worst alternatingly', so the modules will should not different only by a very small margin.
I also was very entertained watching all your bus-bar-videos. I plan to take the 4cellx80cell / 100cell approach, but plan to use loudspeaker wire, tinned already.
https://www.amazon.de/Supra-Cable-f...r=1-1&keywords=flaches+lautsprecherkabel+6mm²
This should be very easy to solder. Furthermore I do not plan to twist it. I hope the exchange of single defect cells will be possible...
And I plan to use the 4x5 cell spacers preferably. I do have 400 single ones already, but I do not like the process of putting them together