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BQ78Z100: NCR18650GA ChemID

Darren Jenkins
Genius 11466 points
Part Number: BQ78Z100
Other Parts Discussed in Thread: BQSTUDIO

Fuel Gauge team,

In bqStudio, there's a cell called NCR18650GA with two entries.  ChemID 1580 (Sanyo) and ChemID 2107 (Panasonic).  They are shown with different cathodes and anodes in the description.  Sanyo is owned by Panasonic, so we are interested in confirming that the anode/cathode description is really accurate, and that these really should have two different ChemIDs.  

Is there a way for us to validate this, possibly based on the details from when the test was done?  Are these really different chemistries?

Thanks,
Darren

  • 0
    TI__Mastermind 19011 points

    Hello Darren, 

    I am not sure that there is a way to validate this, but it is likely that these are two different chemistries. I am not sure that this information is necessary though, we have a tool (GPCCHEM) that will list out the best match for your cells. 

    Regards, 

    Jonny.

  • 0 in reply to Robert
    TI__Genius 11466 points

    Hi Jonny,

    I have some follow up questions.

    Are there any dates associated with the ChemIDs?

    Can we assume that a higher numerical value for ChemID means the test was done more recently?

    Are there any details of the ChemID test results that we can share with a customer?

    How many cells are tested to establish a new a ChemID profile?

    How many times is a cell tested to establish a new ChemID profile?

    Thanks,
    Darren

  • 0 in reply to Darren Jenkins
    TI__Mastermind 19011 points

    Hello Darren, 

    The higher numbers tend to be newer characterized chemIDs. I am not sure what details they would need or why they would need details on this? When a customer gets their cells characterized, this is typically done with one cell. The cell is characterized over different temperature ranges. 

    Regards, 

    Jonny.