BQ4050: BQ4050 Fuel gauge Shows 0% RelativeStateOfCharger 0x0D

Hey Yash,

Can you share a log file showing this behavior? Can you also send me a gg file from the gauge?

Regards,

Nick Richards

Ti_BQ4050_SocLogs.txt

Hi Nick,

Please find attached logs file of SoC (Log Format is mentioned in 1st line.). these logs are sampled at every 10 seconds. can you please tell what is gg file of fuel gauge ? and how to generate it ?

Hey Yash,

In BQStudio, if you go to the Data Memory tab, then click on the "Export" button. This is how you get the gg file.

Regards,

Nick Richards

Hi Nick, 

Thanks Nick. Here, I am attaching the zip folder containing log file and the gg file captured at every 5 min., while discgharging the battery. Can you please check and let me know the reason behind this sudden drop of SOC to 0 %.

Discharging_battery.zip

Hey Yash,

I see the LStatus is 0xA, which indicates that impedance track is not enabled. This needs to be enabled for proper gauging. Please send the "Gauge_En" command and verify that LStatus updates to 0xE.

Regards,

Nick Richards

Hi Nick,

We have enable the LStatus to 0xE (i.e., 14), After that also we see the drop from 4% to 0% while discharging the battery. Attaching the Discharging logs and gg file for your reference.

 Discharging_12_June.zip

Hello Yash,

We noticed that the Cell1, Cell2 and Cell3 R_a flags are all ff55, which indicates that the learning cycle weren't completed. This flag should be 0055 upon successful completion of the learning cycle.

Regards,

Siddharth

Hello Siddharth,

Thanks for the analysis. Can you please confirm is there any value to be set by us? or we have to make battery charge and discharge in a loop, till learning cycle updates to 0055.