Send me a dm. best at discord. and will forward you 3d models.
Charging current without heatsink is >10A but it depends on a lot of factors. how long you charge (with time you get satturated with temperature) room temperature… both charging fets have temperature monitoring so even if you charge at 20A without heatsink it will automaticaly trigger overtemperature and stopped charging..with heatsink bms can do more than 20A but xt30 connectir is limiting factor (20A max)