– If the battery has not been used for a long time.

Before you charge the battery, make sure that its temperature is at least 10°C (50°F).

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 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 jack into the computer. The battery will charge 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 battery life

To maximize the life of the battery, do the following:

•Use the battery until the charge is completely depleted-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.

•For a new battery or a battery that you have not used recently, do one of the following:

1.Recharge the battery completely before using it. The battery is fully charged when the ac power adapter is plugged in and the battery indicator is green.

2.Use the battery until the charge is completely depleted-until the battery status indicator starts blinking orange.

•Always use power management features such as power modes, screen blank, sleep (standby), and hibernation.

Managing your battery power

With Power Manager, you can adjust your power settings to give you the best balance between performance and power saving.

To start the utility program, do as follows:

•For Windows 7: See “Accessing applications in Windows 7” on page 33.

•For Windows Vista and Windows XP: Click Start ➙ All Programs ➙ ThinkVantage ➙ Power Manager.

For more information about the Power Manager program, refer to the on-line help 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 the battery power.

Introducing the power-saving modes

•Screen blank. The computer display requires considerable battery power. To turn off power to the display, do as follows:

1.Press Fn+F3. A panel for selecting a power plan (in Windows XP, power scheme) appears.

Chapter 2. Using your computer 59

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Lenovo 428742U, X220I manual Charging the battery, Maximizing battery life, Managing your battery power, Power-saving modes
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4291BR6PC10B616, 42875TU, 428742U, 4294CTO, X220-4287 specifications

Lenovo's X220i, X220i Tablet, and their respective models such as 42872W5, 42912XU, and 429133U are part of the ThinkPad series, renowned for their reliability, performance, and innovative features tailored for both business and personal use. The X220i and X220i Tablet stand out in the ultrabook category, offering a perfect balance between portability and functionality, making them ideal for professionals on the go.

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In conclusion, the Lenovo X220i, X220i Tablet, and their variants like 42872W5, 42912XU, and 429133U are exemplary devices that blend portability, performance, and durability. Ideal for professionals and students alike, these devices cater to a range of computing needs while maintaining a compact and lightweight profile.
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