Can you confirm the weight and dimensions of the battery modules?Those batteries can be found in a Chrysler Pacific mini van hybrid. They are arranged with six in series for a 350vdc nominal voltage and about 45ahr. Each module is 16s for a 67.2vdc nominal voltage and made from LG Chem pouch cells wielded on opposite ends in a "Z" shape. They have one or two temperature sensors depending on the module. The module has two connectors for the BMS each that are 8s. The arrangement of pins for the BMS is even in one connector and odd in the other connector... for example one connector would have pouch 1,3,5,7,9,11,13,15 plus the temperature sensors and the other connector would have pouch 2,4,6,8,10,12,14,16. ...or something similar. I have seen three different pairs of plugs for the BMS connection. I have bought two batches from the "TechDirect" guy. the first I got for 17 cents a watt after shipping and the second (smaller) batch was about 23 cents a watt. I have a total of 24 modules for my solar system. I had to use a constant 75 watt soldering iron to get a non cold solder wield when adding wires to the pouches. The pouches wicked the heat faster than the smaller irons could make it. I wanted to use the original connectors but my batch came with some different connectors and my wiring harnesses did not fit all the batteries. so i had to make my own connections. Hope all this helps.
When the Chevrolet Volt modules are modified, they can be reassembled with a different number of cells: the housing is a stacked set of frames, with each frame holding two cells (and different modules sizes just have different numbers of frames). The Pacifica module similarly appears to be a stack of frames (apparently also two per cell), so a lower-voltage set would ideally be a shorter stack... but I have no idea if they can be readily disassembled or re-joined.And you’d still be carrying the weight of the disconnected cells around, I was thinking about that and I think i’d Just have to go to a bigger controller.