BQ40Z50-R2: [ bq40Z50-R2] Data error for Remaining Capacity

user4908162

Prodigy 40 points

Part Number: BQ40Z50-R2
Other Parts Discussed in Thread: BQSTUDIO

Why does the remaining capacity change from 1886 mAh to 505mAh？

over 4 years ago

0 Wyatt Keller over 4 years ago

TI__Guru** 105590 points

Hello,

The gauge performs updates periodically during battery cycling, it looks like there was an incorrect calculation.

Can you share the log files from bqStudio and the .gg file for your system when you performed this test?

Sincerely,

Wyatt Keller

0 user4908162 over 4 years ago in reply to Wyatt Keller

Prodigy 40 points

Wyatt Keller：

The log files from my GUI and the .gg file rom bqStudio.fcc.gg.csv Log222.csv

0 user4908162 over 4 years ago in reply to Wyatt Keller

Prodigy 40 points

Wyatt Keller:

The .gg file from my golden image.Please check the file for errors.Thanks.

3S2P_Config20200911.gg.csv

0 Wyatt Keller over 4 years ago in reply to user4908162

TI__Guru** 105590 points

Hello,

I reviewed your files, the configuration looks correct I couldn't find anything abnormal with your parameters.

Usually with jumps like this it is temperature related or the resistance table has a bad value so when the gauge updates FCC and RemCap it drops very quickly, but both of yours looked okay to me.

Is this error repeatable when performing the same test again?

Sincerely,

Wyatt Keller

Power management

Power management forum

BQ40Z50-R2: [ bq40Z50-R2] Data error for Remaining Capacity