When the BATFET is disabled (in shipping mode) and indicated by setting BATFET_DIS, one of the following events can enable BATFET to restore system power:
Plug in adapter
Clear BATFET_DIS bit
Set REG_RST bit to reset all registers including BATFET_DIS bit to default (0)
A logic high to low transition on
QON pin with tSHIPMODE deglitch time to enable BATFET to exit shipping mode