Charging The Batteries; Managing The Battery Power; Power-Saving Modes - Lenovo ThinkPad X250 User Manual

– How often you use the wireless features.
To check for detailed battery status information, do the following:
• For Windows 7: Start the Power Manager program and click the Battery tab.
• For Windows 8.1: Start the Lenovo Settings program and click Power.

Charging the batteries

It is recommended that you charge the battery or replace it with a charged battery when the battery power
remaining is low. For example:
• When you find that the percentage of the remaining power is low.
• When the power alarm alerts you.
If an ac outlet is convenient, plug the ac power adapter into it, and then insert the connector into the
computer. The batteries will be fully charged in about two to three 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%.

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:
1. Move your pointer to the bottom of the screen to display the taskbar and then click the battery-status
icon.
2. Click More power options ➙ Change plan settings.
3. Follow the instructions on the screen.
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 storage drive and the computer display are
turned off. When your computer wakes up, your work is restored within seconds.
To put your computer into sleep mode, press Fn+4.
You also can put the computer into sleep mode by doing the following:
– For Windows 7: Click Start ➙ Sleep.
– For Windows 8.1: Go to the Start screen by pressing the Windows key
then click Sleep.
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
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User Guide
, click the power icon ,