18
Following that:
Plug in the AC adapter, and fully charge your battery.
Use a spare battery if you have one.
If you have neither the AC adapter nor an extra battery , po w er the computer off .

If the suspend or hibernation function is set

Computer
goes off
(at approx. 0% capacity)

If the suspend or hibernation function is not set

(at approx. 9% capacity)
Red indicator lights
Beep sounds**
(at approx. 9% capacity)
Red indicator lights Beep sounds**
(at approx. 4% capacity)
** When disabling the speakers with the Setup Utility (or pressing Fn + F4 ), the
warning beep is also disabled.
(at approx. 4% capacity)

save your data and power off your computer

Suspend Mode or Hibernation Mode
When the Remaining Battery Charge Becomes Low
Battery Power