BQ34Z100-G1: error of R_SOC during a discharge

Part Number:BQ34Z100-G1

Hello,

I have a BQ34Z100-G1 connected with a 7S3P li-ion battery. The discharge is create with a electronic load in mode constant power at 550W. The ambiant temperature of the battery is -20°C. The R_SOC and the remaining capactity decrements normaly up to 77% and the R_SOC passes all at once in 55 % then in 19% then in 0%. I join the gg file and the log that created with voltage, current, temperature and R_SOC, remaining capacity. I am going to redo tests in same condition by monitoring more parameters. You can give me information which can solve this problem?

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