Elitegroup S20II1 - Manual (Page 33)

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In general, using the battery until the low-low battery-warning
indicator appears and fully recharges the battery each time (full
discharge/charge cycle) will ensure the accurate reporting of the
battery gauge status.
Automatic Battery Pack Charging Function
To charge the battery, while the battery pack is in the notebook,
plug the AC adapter into the notebook and an electrical outlet.
The charging time is approximately 4-6 hours when the notebook is
turned off and approximately 6-10 hours when the notebook is
turned on.
When the battery is fully charged, the battery charge indicator
becomes green.
If system runs at heavy loading or in a
high temperature environment, the battery may not be fully
charged. You need to continue to charge it with the AC
adapter plugged in until the charging LED turns green.
Battery Status
Windows Vista has an applet in the Control Panel that will display
an icon in the Windows taskbar indicating when the Notebook is
running on battery power or is attached to the AC adapter.
This applet also displays a meter that indicates how much charge
is remaining in the battery.
Battery Low Warning
When the pack initially reaches the “Battery Low” state
approximately 7 ~ 10 minutes of the usable battery life is left.
You will hear an audible beep signal every 15 seconds alerting you
to the “Battery Low” status. When the battery power reaches the
“Battery Low Low” status the beeping sound will accelerate.
Your battery now has 1 ~ 2 minutes of battery charge remaining.
You must save your data or connect AC power immediately;
otherwise, you may lose your data.
Sound Meaning
Continuous
beeping every 5
seconds Battery Low: Indicates that there is 7 to 10 minutes
charge remaining.