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BQ25703AEVM-732: Learn mode

Part Number: BQ25703AEVM-732

Hi,

I read the users' guide saying that EN-LEARN register allows the battery to discharge while adapter is present. I don't really understand this function. The batteries in this case are currently discharging, so it is not considered forward mode. Can it be considered reverse mode that the batteries power the system? If so, what is the adapter doing? Is it charging the battery at the same time or powering Vsys?

Thank you,

Thu