sorry yes external, the original B parameter is 4050K but there is no through hole with that value.
I want to use something like this or make one for my leaf battery:
https://lcsc.com/product-detail/NTC-Thermistors_VISHAY_NTCALUG03A473HC_47KR-3_C144909.html
but can the b value be changed in software?
[Jon_Coop] uses the 10k so that is why his readings are off.
but it would be more important to have a accurate reading on the cell,
a few degrees off on the board should be ok when balancing.