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Charging the battery
When you nd that the percentage of power remaining is low, for example, the battery alarm goes off, you
need to charge your battery by connecting your computer to ac power. The battery will be fully charged in
about six hours. This is affected by the battery size and the physical environment.
To increase the life of the battery, the computer does not start recharging the battery if the remaining
power is greater than 95%.
Maximizing the battery life
To maximize the life of the battery, do the following:
• Use the battery until the charge is completely depleted; that is, use the battery until the battery status
indicator starts blinking orange.
• Recharge the battery completely before using it. The battery is fully charged if the battery indicator
shows green.
• Always use power saving mode.
Using the ac power adapter
The power to run your computer can come either from the lithium-ion (Li-ion) battery pack provided with it,
or from ac power through the ac power adapter.
The ac power adapter that came with your computer has two basic components:
• The transformer pack that converts ac power for use with the computer.
• The power cord that plugs into the ac outlet and into the transformer pack.
Attention: Using an improper power cord could cause severe damage to your computer.
Connecting the ac power adapter
To use the ac power adapter, do the following:
Note: Be sure to perform the steps in the given order.
1. Plug the ac power adapter into an ac outlet.
2. Connect the power cord to the transformer pack.
3. Insert the power jack into the computer.
Tips on using the ac power adapter
• When the ac power adapter is not in use, disconnect it from the electrical outlet.
• Do not bind the power cord tightly around the ac power adapter transformer pack when it is connected to
the transformer.
• Before you charge the battery, ensure that its temperature is at least 10°C (50°F).
• You can charge the battery when the ac power adapter is connected to the computer and the battery is
installed. You need to charge it in any of the following conditions:
– When a new battery is installed
– If the battery charge is low
– If the battery has not been used for a long time
Chapter 2. Using your computer 25