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GPCCHEM: GPC tested result is not the same with battery spec, what should I do?

Part Number: GPCCHEM
Other Parts Discussed in Thread: BQSTUDIO,

Hello Sir:

Our customer use the BQ27742 in new design.

And the battery spec is NCA103450.

We check all chem ID in BqStudio that we found there were 2154, 0210, 1951 and 2043.

Due to there were many items can be selected, we use the GPC to select chem ID.

But base on the tested result that GPC report suggested chem ID 2086.

Would you please let me know why the GPC report suggested ID 2086?

Why not be the other ID? Such as 2154, 0210, 1951 or 2043? 7762.Config-report.zipConfig.zip

  • Hi Statham,

    The GPCCHEM tool does not know the details of the battery, so it just tries to match the battery discharge curve to the closest curve in the library. So sometimes the result may not result in an exact match with your battery. Since your battery is already in the library, I would not recommend using the GPCCHEM tool and instead pick the ChemID that matches your battery based on the capacity listed.

    Best regards,

    Matt

  • Hi Matt:

    Thanks a lot for your great suggestion.

    One more question which chem ID I should be used?

    I check the battery spec the typical capacity is 2350mAh, the minimum is 2270mAh.

    Chem ID number 1951 and 2043 shows 2270mAh and 2154 and 0210 shows 2350mAh.

    Which capacity I should be used?

    I provide the spec for your reference.

    Thanks. 

    NCA103450 Spec.pdf

  • Hello,

    As long as you matched the ID, you will need to run a learning cycle with your particular design capacity. The gauge will learn based on the battery model that best matches the ID.