One custom level of power conservation ACPI compliant NOTE: For Pentium III 900MHz and 1GHz units, Compaq provides battery optimized mode only while running on battery power.NOTE: For Pentium III 900MHz and 1GHz units, Compaq provides a battery-optimized mode only while running on battery power.
Maximum battery life over 9.5 hours can be achieved using a 9-cell in the Primary Battery Bay and DualBay along with a 6-cell in the MultiBay. Zimbra Install Port Conflict Detected 25 here.