Thank you for your quick response,
The website is full of valuable info, a lot of it goes beyond my current knowledge of the argument.
I was hoping to find pouch cell with equivalent features of the original, and have some technician swap the cells and keep all the rest as original. Yet It sounds like this is difficult to achieve and may even be better to find a new BMS and new battery cells . Il would be great to hear of someone has successfully done it, and with which specific BMS/cells. I will contact Enepaq and see if they can provide suitable cells, their BMS seems a lot better than the original one