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BQ34110: The RSOC value goes down fast.

Part Number: BQ34110
Other Parts Discussed in Thread: GPCCEDV

Hello.

I am designing 6S7P BMS using BQ34110 Chip.

Cell setting and voltage calibration were performed by referring to "EV module user guide".

However, when discharging, the RSOC drops quickly, and when the voltage is 21V, it shows 0%.

When the discharge is terminated, it rises back to 51%.
What am I doing wrong?

I'm new to batteries, so I don't know well.
Please let me know what I should do.

Thank you.