In a system that contains Primary/Secondary Battery. The primary and secondary batteries' gas gauge solution are all using BQ20z70(In BQ20Z70,this bit "PRIMARY_BATTERY_SUPPORT" is cleared as default.),
1) The power management system can select either battey as a primary battery or a secondary .
2) If the primary battery is to run out , can the power management systerm swith the secondary battery to the primary?