Discharged 2x100aH12v in parallel to nearly 0% SoC with charger disconnected…
Reconnect and charger goes to Absorption when either battery between 60-70% SoC then stops charging both batteries in Standby according to the battery BMS or Absorption according to VE Connect and won’t charge further…
Use Victron connect to check the Charger voltage settings. Also, do not the battery voltage at the various stages through the charge.
SOC is a derived parameter, and is not used for the charging profile which is done on Voltage. 12V lead batteries are at 0% SOC at ~1.1V/cell depending on type.