BQ27520-G4: What does "-20C" mean in Chemistry selection table description?

Dear Alan

Thank you for your reply.

I have one more question.
I confirmed that when the resistor value for the thermistor was changed, how RM value would be changed.
The result is the below.
From this result, I feel that RM value would be zero with Chemical ID = 0129 when IC detects less than -20.
Is my understanding correct?

Thanks
Best Regards,

Hello, 

We have received your question and will be back with you promptly.

Thank you,
Alan

Hello user6229777,

From the result it does appear the RM from that testing done that the cells capacity goes down to zero once it reaches -20C, I would recommend looking into using the GPCRB to get higher accuracy on the lower end temperature.

GPCRB:
https://www.ti.com/tool/GPCRB

Thank you,
Alan