Lenovo TP00052A, User Manual

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• 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: Ensure that you take these steps in the given order.
1. Plug the power cord into an electrical outlet.
2. Connect the power cord to the transformer pack.
3. Connect the ac power adapter to the ac power connector of 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, 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 it in any of the following conditions:
– A new battery is installed.
– The percentage of power remaining is low.
– The battery has not been used for a long time.
Charging the battery
When you find that the percentage of power remaining is low or when the power alarm goes off, 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 jack into the computer.
The battery will be fully charged in about 3 to 6 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. For more information about power-saving mode, refer to “Power-saving
modes” on page 33.
Managing the power plans
You can manage the power plans to achieve the best balance between performance and power saving. To
change the power plan, do the following:
1. Click the battery status icon in the Windows notification area. Click More power options .
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User Guide