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User’s Manual 6-9
Power and Power-Up Modes
■ The condition of the battery terminals. Make sure the battery terminals
stay clean by wiping them with a clean dry cloth before installing the
battery pack.
Retaining data with power off
When you turn off your computer with fully charged batteries, the batteries
retain data for the following approximate time periods:
Retention time
Battery type State and Retention Time
Battery pack (3600 mAh)
about 5 days (Standby Mode)
about 65 days (Boot mode)
Battery pack (4400 mAh)
about 6 days (Standby Mode)
about 80 days (Boot mode)
RTC battery
30 days