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BQ40Z80: When BQ40Z80 is on charge mode, will discharge FET be enabled?

Part Number: BQ40Z80

I got a question from my co-worker. He said he has a product installed a battery pack with BQ40Z80 inside. When he charges the battery pack, P+ is high. It seems that BQ40Z80 enabled discharge. Is it possible? Or under what condition, this issue can happen?

Regards

Alex Chen