User Guide
Page 107
... not start charging immediately under the following error message during startup: BAD RTC BATTERY BAD CHECKSUM (CMOS) CHECK SYSTEM Leave the power connected and the battery should begin charging after a few minutes. The RTC battery powers the System Time Clock and BIOS memory used to select a power level setting that reduces the power required...
... not start charging immediately under the following error message during startup: BAD RTC BATTERY BAD CHECKSUM (CMOS) CHECK SYSTEM Leave the power connected and the battery should begin charging after a few minutes. The RTC battery powers the System Time Clock and BIOS memory used to select a power level setting that reduces the power required...