User Guide
Page 96
...internal real-time clock (RTC) battery. NOTE It is seldom necessary to charge the RTC battery because it maintains this information for 24 hours. When fully charged, it charges while the computer is on for up to store your computer was shipped, resulting in a CMOS error message during startup. When ...Hibernation mode is enabled and the RTC battery is low, the real-time clock and calendar may only charge while the computer is turned on. For ...
...internal real-time clock (RTC) battery. NOTE It is seldom necessary to charge the RTC battery because it maintains this information for 24 hours. When fully charged, it charges while the computer is on for up to store your computer was shipped, resulting in a CMOS error message during startup. When ...Hibernation mode is enabled and the RTC battery is low, the real-time clock and calendar may only charge while the computer is turned on. For ...