Checking The Battery Status - Lenovo ThinkPad X1 Carbon User Manual

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 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

Checking the battery status

Move your pointer to the battery-status icon in the Windows notification area to check the battery status.
The battery-status icon displays the percentage of battery power remaining and how long you can use
your computer before you must charge the battery.
The rate at which you use battery power determines how long you can use the battery of your computer
between charges. Because of different user habits and needs, it is difficult to predict how long a battery
charge lasts. There are two main factors:
• How much energy is stored in the battery when you begin to work.
• The way you use your computer. For example:
– How often you access the solid-state drive.
– How bright you make the computer display.
– How often you use the wireless features.
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.
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ThinkPad X1 Carbon User Guide