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bq27210 100% SOC

Manuel Alcorta
Prodigy 20 points
Other Parts Discussed in Thread: BQ27210

I'am building an electric scooter and need the SOC of bq27210 change to 100% every time the charger stops becasuse the battery is fully charged.Anybody can help me?.Thank you.

  • 0
    TI__Intellectual 2340 points

    The bq27210 will adjust to 100% SOC once the charge termination is detected. The conditions that must be met to detect charge termination is for the voltage to be above the qualification voltage that is set with the QV1 and QV0 bits in EEPROM and the charge current must taper to below the current programmed in TAPER register of EEPROM.

    If the gauge is not able to detect the charge termination conditions then the host can also send the DONE command using the CONTROL and MODE registers.

    Please refer to the bq27210 datasheet for further details.

  • 0 in reply to MikeV
    Prodigy 20 points

    Thank you for your help.Are there any way to change the SOC to 0 when the battery pack  voltage decreease to a certain level using comands through I2C?

  • 0 in reply to Manuel Alcorta
    TI__Intellectual 2340 points

    The only way to force a 0% SOC through I2C would be to use the WRTNAC command. You write the NAC to 0 so that SOC becomes 0%. Is there any reason that you want to set SOC to 0% to voltage that is higher than EDVF threshold?