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Original question:

BQ27426: Questions about Qmax and RA update rules

BQ27426: Question about Load mode/select

Wang Dong
Intellectual 540 points
Part Number: BQ27426

Hello，

Fuelgauge system side application, Load Mode/select uses the default 0x81.

Present average discharge power:

1、Present average discharge power, how often is it averaged?

2、When do I start averaging?
3、If the discharge time does not meet the average time, what value is used?
4、In case of intermittent discharge, how to calculate the average value?

5, When Load mode/select=0x81, will the value of AVG P Last Run be used for prediction?
6, How does AVG P Last Run work for this mode?

  • 0
    TI__Guru 53616 points

    #1: It is averaged once a second.

    #2: From start of discharge.

    #3: There is no minimum limit.

    #4: It always starts being averaged at start of discharge so every time the gauge enters discharge state, this will re-start.

    #5: It will use Avg P Last Run when a state change triggers a simulation.

    #6: The gauge saves the average from the last discharge when discharge stops and it will use this for the next simulation.