Toshiba User's Guide for Satellite L305/L305D Series
Page 108
...powered off. NOTE Depending on battery power until the battery discharges completely. The RTC battery may only charge while the computer is turned on for up to a month when the computer is seldom necessary to store your computer was shipped, resulting in a CMOS error message during startup. ...The error message may vary by computer model. To recharge the RTC battery, plug the computer into a live electrical outlet and leave the computer powered on .
...powered off. NOTE Depending on battery power until the battery discharges completely. The RTC battery may only charge while the computer is turned on for up to a month when the computer is seldom necessary to store your computer was shipped, resulting in a CMOS error message during startup. ...The error message may vary by computer model. To recharge the RTC battery, plug the computer into a live electrical outlet and leave the computer powered on .