I was looking at these last week, they have to be used or reject cells, as getting hands on BYD blade cells is almost impossible.
I would imagine that we will see new BYD cells in 18 months, as i believe they are building another 3 cell manufacturing plants at the moment.
For a static battery power pack, i think they will work, space is tight for mobile use, such as a campervan or RV.
As its been pointed out, the Delivery guys will destroy these due to length, even with double boxing i have my doubts.
Still they look like a great cell