Lenovo ThinkPad T420 (English) User Guide - Page 30
Power-status indicators, When the battery reaches 80% charge, blinking stops
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moving the cursor. To enable or disable this mode, press ScrLk. Not all application programs support this function. Power-status indicators The computer has status indicators that show the mode (sleep/standby, hibernation, or normal), ac power status, the status of the battery. The following shows the location and the meaning of the indicators: 1 Sleep (standby in Windows XP) status • Green: The computer is in sleep (standby) mode. • Blinking green: The computer is entering sleep (standby) or hibernation mode, or is resuming normal operation. 2 Battery status • Green: The battery has more than 20% charge. • Orange: The battery has between 5% and 20% charge • Fast blinking orange: The battery has less than 5% charge. Note: The battery may be charging. • Slow blinking orange: The battery is being charged. When it reaches 20%, the blinking color changes to green. • Slow blinking green: The battery has between 20% and 80% charge, and charging is continuing. When the battery reaches 80% charge, blinking stops, but the charging may continue until the battery is 100% charged. Note: If the computer is operating on battery power, the Battery status indicator does not work while the computer is turned off or is in sleep (standby) mode or hibernation mode. • Quick blinking orange: An error has been occurred in the battery. • The battery status indicator blinks three times: The ac power adapter is attached to the computer. • The battery status indicator is off: The battery is fully charged or the battery is detached. 12 User Guide