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BQ27426: Fuel gauge suddenly drops state of charge from 100% to 81%

Part Number: BQ27426

Dominik,

 

I was testing the Panasonic battery calibration file for V200t for the charging cycle. Here’s the file I used, should be the same as the one you sent me. Also the data we collected from Fuel gauge while charging. It looks ok but after sometime while there is a small charge current, and the gauge SoC =100%, the charge current turns off = 0mA and the SOC drops to 81%.  See row 6038.

 

Michael

 https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/Desktop.7z