Lenovo ThinkPad Hard Disk Drive, User Manual

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• ac power adapter: Converts ac power for notebook computer use.
• Power cord: Connects the ac outlet and the ac power adapter.
Connecting to ac power
To connect the computer to ac power, do the following:
Attention: Using an improper power cord might cause severe damage to your computer.
Note: Ensure that you perform the actions in the order in which they are listed.
1. Connect the power cord to the ac power adapter.
2. Connect the ac power adapter to the power connector of the computer.
3. Connect the power cord into an electrical outlet.
Tips on using the ac power adapter
You can check the status of your battery at any time by looking at the battery meter at the bottom of
your display.
• 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, make sure 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 the battery in any of the following conditions:
– When you purchase a new battery
– When the battery meter at the bottom of your display shows that the battery power remaining is low.
– If the battery has not been used for a long time
Charging the battery
When you check battery status and find that the percentage of power remaining is low or when the power
alarm alerts you that the remaining power is low, you need to charge your battery or replace it with a
charged battery.
If an ac outlet is convenient, plug the ac power adapter into it, and then insert the connector into the
computer. The battery will be fully charged in about three to six hours. This is affected by the battery size
and the physical environment. The battery status indicator will let you know that the battery is charging, and
will also notify you when the battery is fully charged.
Note: To maximize 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.
• Recharge the battery completely before using it. You can see whether the battery is fully charged from the
battery-status icon in the Windows notification area.
• Always use power-saving modes, such as sleep mode, and hibernation mode.
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