Lenovo Thinkpad T440 User Manual Download

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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. The charging time is affected by the
battery size and the physical environment. You can check the battery charging status at any time through the
battery-status icon in the Windows notification area.

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.

Managing the battery power

To achieve the best balance between performance and power saving, adjust your power plan settings.
To access power plan settings, do the following:

• For Windows 7: Start the Power Manager program and then click the

Power Plan

tab. For instructions on

how to start the Power Manager program, see “Accessing Lenovo programs on the Windows 7 operating
system” on page 14.

• For Windows 8 and Windows 8.1: Go to the desktop. Right-click the battery-status icon in the windows

notification area and click

Power Options

. Then click

Change plan settings

next to your power plan.

For more information, refer to the help information system of the program.

Power-saving modes

There are several modes that you can use at any time to conserve power. This section introduces each
mode and gives tips on the effective use of battery power.

•

Screen blank mode (for Windows 7 only)

The computer display requires considerable battery power. To turn off the power to the display and make
the computer enter screen blank mode, right-click the battery gauge icon in the windows notification area
and select

Power off display

•

Sleep mode

In sleep mode, your work is saved to memory, and then the solid-state drive or the hard disk drive and the
computer display are turned off. When your computer wakes up, your work is restored within seconds.

Depending on the model, your computer might support the 30 Day Standby function. When this function
is enabled, the computer consumes even less power in sleep mode and takes only seconds to resume
normal operation when you press the power button. For more information about the 30 Day Standby
function, do the following:

– For Windows 7: Refer to the help information system of the Power Manager program. For instructions

on how to start the Power Manager program, see “Lenovo programs” on page 14.

– For Windows 8 and Windows 8.1: Open the Lenovo Settings program and click

Power

➙

30 Day

Standby

To put your computer into sleep mode, press Fn+4 or do the following:

– For Windows 7: Use the Start menu shutdown option.

Chapter 2

Using your computer