Suggest stick with the sub-packs .. placed/assembled into the main pack one sub-pack at a time in the car .. It is much harder to work with one big pack .. At least that's been my 20/20 hindsight from working with my 48s pack (~25kg) .. I had originally intended on breaking mine into either six 8s (~4kg) or three 16s (~8kg) sub-packs .. and sometimes I've wished I had stuck with that original intent .. This applies even more so with yours at about twice the OEM pack weight ~50kg.I had read of someone using 72S but I would like to run sub-packs, but I'm not sure of the best arrangement and finer details. Any recommendations for this type of cell or in general?
Thin layer of dielectric film can provide additional electrical isolation between cells / sub-packs .. I forget the type Peter used between his cells .. but I used a 1mil (0.001") thick Teflon Film .. 2,000v Dielectric strength .. even 73 sheets of that only add 0.073" (~1.9mm)Also, what additional components in series between sub-packs could be added, particularly for electrical isolation & safety?