Dell U4873 battery reset and blocked chip

BE2WORKS software discussion forum

Dell U4873 battery reset and blocked chip

Postby remoter » Mon Dec 20, 2021 8:59 am

I have U4873 battery with bq20853dbt and 29311pw chips. I was able to connect battery through cp2112 adapter to pc and read battery data with be2works. However the chip was sealed and password was not default. I read on forum here to try drain battery so RemainingCapacity will be 0, and then reset password but when I was draining battery one of the cell went sudenly below 3000 V and the chip is blocked now. I cant read battery data with be2works anymore. How can I reset it?
remoter
 
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