Thanks so much for the info
As I can see its possible to change the LVC of a generic controller , changing 2 resistances (voltage divider) for different values, this ones send the amount of threshold voltage to the chip , programmed to cut off the power.
Replacing this resistors , you can cheat the chip and therefore change the cutoff voltage.
As well I could read there is people reprogram the chips!!
As more I read about ebikes, more interesting !!
Here there is a link explaining everything about how to modify this resistors , if anyone is interested:
https://endless-sphere.com/forums/viewt ... r&start=25
I guess then , if I build a 12s4p I will have to replace the BMS ...and the charger as well??