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bq20z80 Access Code

Other Parts Discussed in Thread: BQ20Z80

Hi, we are re-manufacturing a Li ION cell pack that uses  the BQ20Z80 gas gauge, but need to reset the charge profiles.

We can read the current data with EV2300 but cannot re-program the gauge to accept new default values. Can anyone assist either with the unlock codes please, or is there a method to over write the data without the code?