User Guide
Page 107
... computer into a live electrical outlet. Mobile Computing Charging batteries 107 Charging the main battery To charge the main battery while it is extremely hot or cold. The RTC battery may not start charging immediately under the following error message during startup: BAD RTC BATTERY BAD CHECKSUM (CMOS) CHECK SYSTEM Your computer's Power Options utility can be...
... computer into a live electrical outlet. Mobile Computing Charging batteries 107 Charging the main battery To charge the main battery while it is extremely hot or cold. The RTC battery may not start charging immediately under the following error message during startup: BAD RTC BATTERY BAD CHECKSUM (CMOS) CHECK SYSTEM Your computer's Power Options utility can be...