Tool/software:
Hello.
I have a question.
I made a 24V solar charging/discharging system,
It is found that the SOC information of the battery that is read by the I2C bus suddenly reads strangely.
If you look at the Excel file I attached,
From December 14th, the voltage drops, but the SOC value tends to be maintained/increased, not decreased.
After 16:00 on the 15th, the voltage continue to drop, but the SOC not change.
Finally, at 7:33 a.m. on December 16, the SOC was 72, but the voltage was 17.8 V and the battery was completely discharged.
The IC is BQ34Z100-G1.
The battery is BST 6.7AH, 25.6VDC . part no: PP-IFR26650G2W-8S2P
I'm also attaching the golden image I made.
Please check what the problem is.
6700mA BST batter charge_discharge inform.xlsx0x02_0_16-bq34z100G1_6700mA.df.zip
thank you.