Lenovo M4400s notebook - Manual (Page 28)

1 Right-click button: Functions the same as the right button on a conventional mouse.
2 Touch pad: To move the cursor on the screen, slide your fingertip over the touch pad in the direction
in which you want the cursor to move.
3 Left-click button: Functions the same as the left button on a conventional mouse.
Power management
Use your computer with ac power whenever ac power is available. Use your computer with battery power
when ac power is not available.
Checking the battery status
The battery icon in the Windows notification area displays the percentage of battery power remaining.
Different computer components consume power at different rates. The more you use the power-intensive
components, the faster you consume battery power. Because each computer user has different habits and
needs, it is difficult to predict how long a battery charge will last. There are two main factors:
• How much energy is stored in the battery when you begin to work.
• The way you use your computer:
– How often you access the hard disk drive?
– How bright you make the computer display?
Using the ac power adapter
When you use ac power, the battery charges 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 could cause severe damage to the computer.
Connecting the ac power adapter
To connect the ac power adapter, do the following:
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
Observe the following guidelines when 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. Charge it in any of the following conditions:
– When you purchase a new battery
14 User Guide