Several utilities for working with TI bq20z... IC.
Tested on Arduino Nano with Atmega328PB 16 MHz and bq20z955 IC.
P.S. If you need UNSEAL keys, please contact me in the forum -
https://forum.arduino.ru/t/obshhenie-s-batareyami-ot-noutbuka-na-chipah-bq20z/10399 !