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BQ76942EVM: Speeding up balancing

Matthew Wyman
Prodigy 30 points
Part Number: BQ76942EVM

I am currently balancing a 6S LiPo battery. In the relax mode I am currently balancing with 45mA. It took a very long time to balance the battery, is there a way to get more current to speed up the balancing process? 

  • 0
    TI__Mastermind 42060 points

    Hello Matthew,

    If you'd like higher balancing currents, you can implement external cell balancing. This would allow you to perform balancing at much higher currents than what the internal balancing FETs can handle.

    Sometimes with lower balancing currents, it may take multiple charge/discharge cycles to fully balance the cells. 

    I'd recommend to read the Cell Balancing With BQ769x2 Battery Monitors application note for guidance.

    Let me know if you have any more questions! Slight smile.

    Best Regards,

    Luis Hernandez Salomon