Lenovo 20AQ006HUS, 20AQ004JUS manual Using the ac power adapter, Charging the batteries

Enabling the battery alarm on the Windows 7 operating system

For the Windows 7 operating system, you can program your computer so that when the battery power falls below a certain level, three events occur: the alarm goes off, a message is displayed, and the LCD is turned off.

To enable the battery alarm, do the following:

1.Start the Power Manager program.

2.Click the Global Power Settings tab.

3.For Low battery alarm or Critically low battery alarm, set the percentage of the power level and set the action.

Note: If your computer enters sleep or hibernation mode when the battery is low, but the alarm message has not yet been displayed, the message will be displayed when the computer resumes. To resume normal operation, when the message is displayed, click OK.

Using the ac power adapter

The power to run your computer can come either from the lithium-ion (Li-ion) built-in battery, or from ac power through the ac power adapter. While you use ac power, the batteries charge automatically.

The ac power adapter that comes 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 might cause severe damage to your computer.

Connecting the ac power adapter

To connect the ac power adapter, do the following:

Note: Ensure that you perform the actions in the order in which they are listed.

1.Plug the ac power adapter 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 for 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 batteries, make sure that their temperature is at least 10°C (50°F).

•You can charge the batteries when the ac power adapter is connected to the computer. You need to charge the batteries in any of the following situations:

–When the battery icon in the Windows notification area shows a low percentage of battery power remaining.

–When the batteries have not been used for a long time

Charging the batteries

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 batteries.

28User Guide