BQ25619: Can't disable BATFET without VBUS input)

Part Number: BQ25619

Hi 

     We would like disable BATFET to turnoff system power completely throughout I2C to set bit5 of 07 register as "1" , here we check the EVM it can't work if we have no connect an adapter on VBUS,

      Please advise how to achieve BATFET turnoff without input source?