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BQ25619: Enquiry on Battery Capacity Status Monitoring

David Tandri
Expert 1355 points
Part Number: BQ25619
Other Parts Discussed in Thread: BQ25895, BQ25896

Hi,

Is it possible to monitor the battery capacity (mAh) on an MCU using BQ25619 via the I2C communication line?

I would like to know how many percentage left my battery has. If the MCU can monitor it via I2C bus, I can use it to perform further actions.

Any help or suggestion is much appreciated.

Thanks

  • 0
    TI__Mastermind 25800 points

    Hey David,

    Unfortunately, the BQ25619 does not support any form of battery gauging. 

    However, you can look into the BQ25895 device which at the very least has an integrated ADC to monitor the battery voltage. Just bear in mind that this would be a crude form of gauging, and an actual battery fuel gauging IC would provide the best accuracy.

    Regards,
    Joel H

  • 0
    TI__Guru**** 166176 points

    Hi David,

    Unfortunately, the BQ25619 does not have a way to monitor battery capacitor.  You would need a separate gas gauge IC for that.  Some of our chargers (e.g. BQ25896) have integrated ADC that reports instantaneous, battery voltage and charge current.

    Regards,

    Jeff