Elitegroup E11IS9 - Manual (Page 32)

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The battery pack in this system is replaceable by the end
user.
Battery Low-Power Warning
1. Low Battery Warning
Low battery condition occurs when battery power is reduced to 10
percent. The red battery status LED indicator blinks and the
system beeps once every 16 seconds or so.
2. Very Low Battery Warning
Very Low battery condition occurs at 5 percent power remaining.
The red battery status LED indicator blinks and the system beeps
at 4-second interval.
When the Intel-powered classmate PC warns you of its low battery
condition, you will have about three to five minutes to save your
current work.
Do not expose battery packs to
temperatures below 0 degree Celsius (32 degree F) or above
60 degree C (140 degree F). This may adversely affect the
battery pack.
Charging the Battery and Charging Time
To charge the battery, plug the AC adapter into the Intel-powered
classmate PC and an electrical outlet.
For a totally discharged battery, it will take approximately two hours
to charge to 90% capacity, and approximately three hours to 100%
capacity while Intel-powered classmate PC is powered off. It will
take about 5 hours to charge the battery to 100% capacity while
Intel-powered classmate PC is powered on.
When the battery is fully charged, the battery charge indicator
becomes blue.
If system runs at heavy loads 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 blue.