BQ27621-G1: Performance and accuracy of BQ27621-G1

Chirag Jingar

Part Number: BQ27621-G1

Tool/software:

Hello,

In one of our new product, I am planning to use BQ27621-G1 gas-gauge IC. I need following question regarding performance of the ICs.

1. What is the maximum and average accuracy of BQ27621-G1 against actual battery % SOC ?

2. Is IC included the aging of battery against its charging cycle, temperature etc ?

Regards,

Chirag

7 months ago

0 Alan Frias 7 months ago

TI__Mastermind 38525 points

Hello Chirag,

This question has been assigned and will be reviewed when possible.

Thank you,
Alan

0 Alan Frias 6 months ago in reply to Alan Frias

TI__Mastermind 38525 points

Hello Chirag,

Chirag Jingar said:
1. What is the maximum and average accuracy of BQ27621-G1 against actual battery % SOC ?

-Typically dependent on the load and external environment conditions would advertise for 1% SOC accuracy if the correct chemID and data memory parameter, calibration and overall setup was done correctly. However since this is a pre-programmed gauge that doesn't have access to the entire chemID library than an understanding of a lower SOC accuracy may take place unless the cell is very compatible with the limited chemID's.

Chirag Jingar said:
2. Is IC included the aging of battery against its charging cycle, temperature etc ?

-State of health and charge cycle appears to not be available based on the technical reference manual however we do offer gauges with this type of information. Temperature measurements are available and for more parameters please reference the TRM.

Technical Reference Manual (TRM):
https://www.ti.com/lit/ug/sluuad4c/sluuad4c.pdf?ts=1757693041074&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FBQ27621-G1

Thank you,
Alan

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BQ27621-G1: Performance and accuracy of BQ27621-G1