BotoX

The quarz on the V1.6 BMS is 8MHz.

You can only run this BMS with 115200 baud if you use a 16 MHz quarz OR calibrate it with OSCCAL so that you can do 115200 baud with 8...

Have you tried connecting the battery ground to B-? I think it might be necessary. Also check with a Multimeter if the BQ76930 is getting power. https://www.ti.com/lit/ds/symlink/bq76940.pdf Page 4: 6...

debug_print() ....

You should probably adjust your battery capacity then... This BMS firmware uses coulomb counting for capacity tracking. Which means it integrates/adds up/counts the current which is flowing through the BMS...

Your shunt resistor value could also be wrong. You can calibrate it using a known current through the BMS (charger with X Ampere for example or a programmable load with...

This has nothing to do with the BMS, you will get the same behavior when charging without a BMS. All the BMS can do is disconnect your battery if there...

By unplugging / replugging the balance connector your reset the MCU, thus the data got lost and also the issue you were having was fixed. It would've been interesting which...

I write the data every time the cycle counter is increased.

Could be fixed by the latest commit.