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BQ24161EVM-721: Recharge does not start

Part Number: BQ24161EVM-721


Hi, 

I am using a 3.7V lithium ion battery with a regulation voltage of 4.2V. The battery is fully charged when the status/control register value is 0x50.

I am expecting the battery recharge should start after a voltage drop, If I do not remove the USB power supply after the battery is fully charged.

At what voltage battery recharge should start, is it 4.20-0.12=4.08V?

I am using BQ24161EVM-721 board's I2C, STAT and INT pin connected to my development board.

Thanks