Charging The Battery; Maximizing The Battery Life; Managing The Battery Power; Power-Saving Modes - Lenovo ThinkPad Edge E145 User Manual

• You can charge the battery when the ac power adapter is connected to the computer and the battery is
installed. You need to charge it in any of the following conditions:
– When you purchase a new battery
– If the battery meter at the bottom of your display shows the battery charge is low
– If the battery has not been used for a long time

Charging the battery

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 battery or replace it with a
charged battery.
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 3 to 6 hours. This is affected by the battery size and the
physical environment. The battery status indicator will let you know that the battery is charging, and will
also notify you when the battery is fully charged.
Note: To increase 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; that is, use the battery until the battery status
indicator starts blinking orange.
• Recharge the battery completely before using it. The battery is fully charged if the battery indicator shows
green when the ac power adapter is plugged in.
• Always use power management features such as power modes, screen blank, sleep, and hibernation.

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 Battery tab. For instructions on
how to start the Power Manager program, see "Accessing Lenovo programs on the Windows 7 operating
system" on page 13.
• For Windows 8: Go to Control Panel and click Power Options.
For more information about the Power Manager program, refer to the help information system.

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 the 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 from the Windows
notification area and select Power off display.
• Sleep mode
In sleep mode, your work is saved to memory, and then the hard disk drive and the computer display are
turned off. When your computer wakes up, your work is restored within seconds.
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User Guide