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BQ4050: Large Ah drop

AV
Prodigy 240 points
Part Number: BQ4050
Other Parts Discussed in Thread: GPCCEDV

Hi,

We uploaded the values sent by TI's GPC tool into the gauge. In the GPC report ,deviation was observed in SOC and when asked TI about the accuracy , we were advised to run the accuracy tests.  When the We completed 2 charge-discharge cycles,during the 3rd discharge cycle , at the start of discharge there was a massive drop in the RAh from 24947 Ah to 1792 Ah (SOC from 98 % to 7%). Is there any specific reason as to which this condition could have occurred. The pack is a 4S8P pack.I have attached the log files , GPC report and gg file for reference.

Thanks,

AV

7288.dsg info.zip

  • 0
    TI__Guru* 76230 points
    hi

    Your gpc report showed that you had high deviation both at room and cold temperatures.Also, Your max error in the log files is at 100%. I don't believe you learnt properly . You will need to rerun your tests to use with gpccedv following the instructions closely

    thanks
    Onyx