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bq40z50 not discharging

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We have made a simple battery application similar to one described in bq40z50 datasheet ; with 3 Li-Ion cells in series, so the pack has ~12 V and 16.2Ah

No matter what commands I send through Battery Management Studio,  I can't get voltage on Pack pin in order to supply a load.  FETs wont turn on.

What do I do wrong?

In test mode if I send command CHG Test bq should drive the chg pin in order to turn  on the chg FET , right?

Chg , DSG and PCHG FET won't be turned on  .

Perhaps is due to other settings ?

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