This post might be useful for those looking to upgrade lead acid based 144V systems...
Here is the configuration I came up with, while reusing the Nissan Leaf interconnects, safety covers, and BMS wiring.
This is one of four 150V 65Ah modules for my Solectria E10.
Total battery weight will be 656 pounds for a 150V 260Ah battery pack.
Under 700 pounds with all the module carrier plates, interconnects and BMS wiring.
I expect to get around 120 mile range when done (80-20 charge/discharge).
All the pics are here:
Video playlist is here: