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BQ28Z610: How to set the PF VIMA thresholds properly?

Part Number: BQ28Z610

Hi,

This is for a Li-ion battery pack with 2 cells connected in series.

BQ28Z611's default thresholds for VIMA are 3.7V check voltage, 50mA check current, 200mV delta threshold, and 5s delay.

The battery supplier is proposing to change these thresholds to 4V check voltage, 50mA check current, 500mV delta threshold and 20s delay.

500mV delta threshold just seems too excessive.

Is there a guideline on how to set these threshold properly to provide safe operation yet avoid false permanent fail?

Victor