Probably £17,000 each with the amount of things I keep adding to them . But they will look nice in my garage!! Just joking! We will make them the cheapest £/kwh available currently for a warrantied option. I kind of make things that I would want, and hope other people want them too lol
DIY kits are next for racks, DIY boxes for the 280Ah cells (similar to seplos with interchangeable BMS) along with commercial versions pre-built.
I've also thought about maybe doing a DIY powerwall with the 280, so similar to the seplos, but cells are stacked instead. Just to make the footprint a little smaller. Haven't really hashed out the details or how to do it yet. I was thinking 4 x 280, side by side, but 4 rows, one on top of one another.