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BQ27Z561-R1: FCC Recovery Questions

Elias Xiao
Prodigy 230 points
Part Number: BQ27Z561-R1

Tool/software:

Hi,

    As shown in the figure below, during the battery charging process, we found that the FCC of Gauge changed from 1285 to 1024, but after a period of standing still, the FCC did not recover to 1285. May I ask under what conditions the FCC can recover to around 1285.

    The attached test data is for reference only. Thank you.

charge data.xlsx

  • 0
    TI__Mastermind 37761 points

    Hello Elias,

    During the charge, the temperature gets to around 50C, this is likely causing FCC to update to the lower value. Discharging the battery at room temperature and or charging at room temperature should allow FCC to update to a higher value.

    Regards,

    Adrian